c97f22d9708631c0d9e9b81f461b931eb47bc1a8
161 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Greg Kroah-Hartman
|
664620f99a |
Merge 4.19.209 into android-4.19-stable
Changes in 4.19.209 ocfs2: drop acl cache for directories too usb: gadget: r8a66597: fix a loop in set_feature() usb: dwc2: gadget: Fix ISOC transfer complete handling for DDMA usb: musb: tusb6010: uninitialized data in tusb_fifo_write_unaligned() cifs: fix incorrect check for null pointer in header_assemble xen/x86: fix PV trap handling on secondary processors usb-storage: Add quirk for ScanLogic SL11R-IDE older than 2.6c USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter USB: cdc-acm: fix minor-number release staging: greybus: uart: fix tty use after free Re-enable UAS for LaCie Rugged USB3-FW with fk quirk USB: serial: mos7840: remove duplicated 0xac24 device ID USB: serial: option: add Telit LN920 compositions USB: serial: option: remove duplicate USB device ID USB: serial: option: add device id for Foxconn T99W265 mcb: fix error handling in mcb_alloc_bus() serial: mvebu-uart: fix driver's tx_empty callback net: hso: fix muxed tty registration bnxt_en: Fix TX timeout when TX ring size is set to the smallest net/smc: add missing error check in smc_clc_prfx_set() gpio: uniphier: Fix void functions to remove return value net/mlx4_en: Don't allow aRFS for encapsulated packets scsi: iscsi: Adjust iface sysfs attr detection tty: synclink_gt, drop unneeded forward declarations tty: synclink_gt: rename a conflicting function name fpga: machxo2-spi: Return an error on failure fpga: machxo2-spi: Fix missing error code in machxo2_write_complete() thermal/core: Potential buffer overflow in thermal_build_list_of_policies() irqchip/goldfish-pic: Select GENERIC_IRQ_CHIP to fix build irqchip/gic-v3-its: Fix potential VPE leak on error md: fix a lock order reversal in md_alloc blktrace: Fix uaf in blk_trace access after removing by sysfs net: macb: fix use after free on rmmod net: stmmac: allow CSR clock of 300MHz m68k: Double cast io functions to unsigned long xen/balloon: use a kernel thread instead a workqueue nvme-multipath: fix ANA state updates when a namespace is not present compiler.h: Introduce absolute_pointer macro net: i825xx: Use absolute_pointer for memcpy from fixed memory location sparc: avoid stringop-overread errors qnx4: avoid stringop-overread errors parisc: Use absolute_pointer() to define PAGE0 arm64: Mark __stack_chk_guard as __ro_after_init alpha: Declare virt_to_phys and virt_to_bus parameter as pointer to volatile net: 6pack: Fix tx timeout and slot time spi: Fix tegra20 build with CONFIG_PM=n erofs: fix up erofs_lookup tracepoint arm64: dts: marvell: armada-37xx: Extend PCIe MEM space PCI: aardvark: Fix checking for PIO status tcp: address problems caused by EDT misshaps tcp: always set retrans_stamp on recovery tcp: create a helper to model exponential backoff tcp: adjust rto_base in retransmits_timed_out() xen/balloon: fix balloon kthread freezing qnx4: work around gcc false positive warning bug tty: Fix out-of-bound vmalloc access in imageblit cpufreq: schedutil: Use kobject release() method to free sugov_tunables cpufreq: schedutil: Destroy mutex before kobject_put() frees the memory mac80211: fix use-after-free in CCMP/GCMP RX x86/kvmclock: Move this_cpu_pvti into kvmclock.h drm/amd/display: Pass PCI deviceid into DC ipvs: check that ip_vs_conn_tab_bits is between 8 and 20 hwmon: (mlxreg-fan) Return non-zero value when fan current state is enforced from sysfs mac80211: Fix ieee80211_amsdu_aggregate frag_tail bug mac80211: limit injected vht mcs/nss in ieee80211_parse_tx_radiotap sctp: break out if skb_header_pointer returns NULL in sctp_rcv_ootb hwmon: (tmp421) Replace S_<PERMS> with octal values hwmon: (tmp421) report /PVLD condition as fault hwmon: (tmp421) fix rounding for negative values e100: fix length calculation in e100_get_regs_len e100: fix buffer overrun in e100_get_regs Revert "block, bfq: honor already-setup queue merges" scsi: csiostor: Add module softdep on cxgb4 af_unix: fix races in sk_peer_pid and sk_peer_cred accesses elf: don't use MAP_FIXED_NOREPLACE for elf interpreter mappings ipack: ipoctal: fix stack information leak ipack: ipoctal: fix tty registration race ipack: ipoctal: fix tty-registration error handling ipack: ipoctal: fix missing allocation-failure check ipack: ipoctal: fix module reference leak ext4: fix potential infinite loop in ext4_dx_readdir() net: udp: annotate data race around udp_sk(sk)->corkflag EDAC/synopsys: Fix wrong value type assignment for edac_mode ARM: 9077/1: PLT: Move struct plt_entries definition to header ARM: 9078/1: Add warn suppress parameter to arm_gen_branch_link() ARM: 9079/1: ftrace: Add MODULE_PLTS support ARM: 9098/1: ftrace: MODULE_PLT: Fix build problem without DYNAMIC_FTRACE hso: fix bailout in error case of probe usb: hso: fix error handling code of hso_create_net_device usb: hso: remove the bailout parameter crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() HID: betop: fix slab-out-of-bounds Write in betop_probe netfilter: ipset: Fix oversized kvmalloc() calls HID: usbhid: free raw_report buffers in usbhid_stop cred: allow get_cred() and put_cred() to be given NULL. Linux 4.19.209 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I0372088284cf5d3ac51275d2ba5fad5b0ce6f5c6 |
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Guenter Roeck
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a33e34a35b |
compiler.h: Introduce absolute_pointer macro
[ Upstream commit f6b5f1a56987de837f8e25cd560847106b8632a8 ] absolute_pointer() disassociates a pointer from its originating symbol type and context. Use it to prevent compiler warnings/errors such as drivers/net/ethernet/i825xx/82596.c: In function 'i82596_probe': arch/m68k/include/asm/string.h:72:25: error: '__builtin_memcpy' reading 6 bytes from a region of size 0 [-Werror=stringop-overread] Such warnings may be reported by gcc 11.x for string and memory operations on fixed addresses. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Greg Kroah-Hartman
|
72af4b8433 |
Merge 4.19.183 into android-4.19-stable
Changes in 4.19.183 ASoC: ak4458: Add MODULE_DEVICE_TABLE ASoC: ak5558: Add MODULE_DEVICE_TABLE ALSA: hda: generic: Fix the micmute led init state Revert "PM: runtime: Update device status before letting suppliers suspend" vmlinux.lds.h: Create section for protection against instrumentation lkdtm: don't move ctors to .rodata perf tools: Use %define api.pure full instead of %pure-parser tools build feature: Check if get_current_dir_name() is available tools build feature: Check if eventfd() is available tools build: Check if gettid() is available before providing helper btrfs: fix race when cloning extent buffer during rewind of an old root btrfs: fix slab cache flags for free space tree bitmap ASoC: fsl_ssi: Fix TDM slot setup for I2S mode nvmet: don't check iosqes,iocqes for discovery controllers NFSD: Repair misuse of sv_lock in 5.10.16-rt30. svcrdma: disable timeouts on rdma backchannel sunrpc: fix refcount leak for rpc auth modules net/qrtr: fix __netdev_alloc_skb call scsi: lpfc: Fix some error codes in debugfs nvme-rdma: fix possible hang when failing to set io queues powerpc: Force inlining of cpu_has_feature() to avoid build failure usb-storage: Add quirk to defeat Kindle's automatic unload usbip: Fix incorrect double assignment to udc->ud.tcp_rx USB: replace hardcode maximum usb string length by definition usb: gadget: configfs: Fix KASAN use-after-free iio:adc:stm32-adc: Add HAS_IOMEM dependency iio:adc:qcom-spmi-vadc: add default scale to LR_MUX2_BAT_ID channel iio: adis16400: Fix an error code in adis16400_initial_setup() iio: gyro: mpu3050: Fix error handling in mpu3050_trigger_handler iio: hid-sensor-humidity: Fix alignment issue of timestamp channel iio: hid-sensor-prox: Fix scale not correct issue iio: hid-sensor-temperature: Fix issues of timestamp channel PCI: rpadlpar: Fix potential drc_name corruption in store functions perf/x86/intel: Fix a crash caused by zero PEBS status x86/ioapic: Ignore IRQ2 again kernel, fs: Introduce and use set_restart_fn() and arch_set_restart_data() x86: Move TS_COMPAT back to asm/thread_info.h x86: Introduce TS_COMPAT_RESTART to fix get_nr_restart_syscall() ext4: find old entry again if failed to rename whiteout ext4: do not try to set xattr into ea_inode if value is empty ext4: fix potential error in ext4_do_update_inode genirq: Disable interrupts for force threaded handlers x86/apic/of: Fix CPU devicetree-node lookups cifs: Fix preauth hash corruption Linux 4.19.183 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I4f8cba389a80baddd43c2e782e9250187bf94d05 |
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Nicolas Boichat
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c0387536ed |
vmlinux.lds.h: Create section for protection against instrumentation
From: Thomas Gleixner <tglx@linutronix.de> commit 6553896666433e7efec589838b400a2a652b3ffa upstream. Some code pathes, especially the low level entry code, must be protected against instrumentation for various reasons: - Low level entry code can be a fragile beast, especially on x86. - With NO_HZ_FULL RCU state needs to be established before using it. Having a dedicated section for such code allows to validate with tooling that no unsafe functions are invoked. Add the .noinstr.text section and the noinstr attribute to mark functions. noinstr implies notrace. Kprobes will gain a section check later. Provide also a set of markers: instrumentation_begin()/end() These are used to mark code inside a noinstr function which calls into regular instrumentable text section as safe. The instrumentation markers are only active when CONFIG_DEBUG_ENTRY is enabled as the end marker emits a NOP to prevent the compiler from merging the annotation points. This means the objtool verification requires a kernel compiled with this option. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/r/20200505134100.075416272@linutronix.de [Nicolas: Guard noinstr macro in include/linux/compiler_types.h in __KERNEL__ && !__ASSEMBLY__, otherwise noinstr is expanded in the linker script construct. Upstream does not have this problem as many macros were moved by commit 71391bdd2e9a ("include/linux/compiler_types.h: don't pollute userspace with macro definitions"). We take the minimal approach here and just guard the new macro. Minor context conflicts in: arch/powerpc/kernel/vmlinux.lds.S include/asm-generic/vmlinux.lds.h include/linux/compiler.h] Signed-off-by: Nicolas Boichat <drinkcat@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Greg Kroah-Hartman
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07ce88e9de |
Merge 4.19.164 into android-4.19-stable
Changes in 4.19.164
Kbuild: do not emit debug info for assembly with LLVM_IAS=1
x86/lib: Change .weak to SYM_FUNC_START_WEAK for arch/x86/lib/mem*_64.S
spi: bcm2835aux: Fix use-after-free on unbind
spi: bcm2835aux: Restore err assignment in bcm2835aux_spi_probe
iwlwifi: pcie: limit memory read spin time
arm64: dts: rockchip: Assign a fixed index to mmc devices on rk3399 boards.
iwlwifi: mvm: fix kernel panic in case of assert during CSA
powerpc: Drop -me200 addition to build flags
ARC: stack unwinding: don't assume non-current task is sleeping
scsi: ufs: Make sure clk scaling happens only when HBA is runtime ACTIVE
irqchip/gic-v3-its: Unconditionally save/restore the ITS state on suspend
soc: fsl: dpio: Get the cpumask through cpumask_of(cpu)
platform/x86: thinkpad_acpi: Do not report SW_TABLET_MODE on Yoga 11e
platform/x86: thinkpad_acpi: Add BAT1 is primary battery quirk for Thinkpad Yoga 11e 4th gen
platform/x86: acer-wmi: add automatic keyboard background light toggle key as KEY_LIGHTS_TOGGLE
platform/x86: intel-vbtn: Support for tablet mode on HP Pavilion 13 x360 PC
Input: cm109 - do not stomp on control URB
Input: i8042 - add Acer laptops to the i8042 reset list
pinctrl: amd: remove debounce filter setting in IRQ type setting
mmc: block: Fixup condition for CMD13 polling for RPMB requests
kbuild: avoid static_assert for genksyms
scsi: be2iscsi: Revert "Fix a theoretical leak in beiscsi_create_eqs()"
x86/mm/mem_encrypt: Fix definition of PMD_FLAGS_DEC_WP
x86/membarrier: Get rid of a dubious optimization
x86/apic/vector: Fix ordering in vector assignment
compiler.h: fix barrier_data() on clang
PCI: qcom: Add missing reset for ipq806x
mac80211: mesh: fix mesh_pathtbl_init() error path
net: stmmac: free tx skb buffer in stmmac_resume()
tcp: select sane initial rcvq_space.space for big MSS
tcp: fix cwnd-limited bug for TSO deferral where we send nothing
net/mlx4_en: Avoid scheduling restart task if it is already running
lan743x: fix for potential NULL pointer dereference with bare card
net/mlx4_en: Handle TX error CQE
net: stmmac: delete the eee_ctrl_timer after napi disabled
net: stmmac: dwmac-meson8b: fix mask definition of the m250_sel mux
net: bridge: vlan: fix error return code in __vlan_add()
ktest.pl: If size of log is too big to email, email error message
USB: dummy-hcd: Fix uninitialized array use in init()
USB: add RESET_RESUME quirk for Snapscan 1212
ALSA: usb-audio: Fix potential out-of-bounds shift
ALSA: usb-audio: Fix control 'access overflow' errors from chmap
xhci: Give USB2 ports time to enter U3 in bus suspend
USB: UAS: introduce a quirk to set no_write_same
USB: sisusbvga: Make console support depend on BROKEN
ALSA: pcm: oss: Fix potential out-of-bounds shift
serial: 8250_omap: Avoid FIFO corruption caused by MDR1 access
drm/xen-front: Fix misused IS_ERR_OR_NULL checks
drm: fix drm_dp_mst_port refcount leaks in drm_dp_mst_allocate_vcpi
arm64: lse: fix LSE atomics with LLVM's integrated assembler
arm64: lse: Fix LSE atomics with LLVM
arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S
x86/resctrl: Remove unused struct mbm_state::chunks_bw
x86/resctrl: Fix incorrect local bandwidth when mba_sc is enabled
pinctrl: merrifield: Set default bias in case no particular value given
pinctrl: baytrail: Avoid clearing debounce value when turning it off
ARM: dts: sun8i: v3s: fix GIC node memory range
gpio: mvebu: fix potential user-after-free on probe
scsi: bnx2i: Requires MMU
xsk: Fix xsk_poll()'s return type
can: softing: softing_netdev_open(): fix error handling
clk: renesas: r9a06g032: Drop __packed for portability
block: factor out requeue handling from dispatch code
netfilter: x_tables: Switch synchronization to RCU
gpio: eic-sprd: break loop when getting NULL device resource
selftests/bpf/test_offload.py: Reset ethtool features after failed setting
RDMA/cm: Fix an attempt to use non-valid pointer when cleaning timewait
ixgbe: avoid premature Rx buffer reuse
drm/tegra: replace idr_init() by idr_init_base()
kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
drm/tegra: sor: Disable clocks on error in tegra_sor_init()
arm64: syscall: exit userspace before unmasking exceptions
vxlan: Add needed_headroom for lower device
vxlan: Copy needed_tailroom from lowerdev
scsi: mpt3sas: Increase IOCInit request timeout to 30s
dm table: Remove BUG_ON(in_interrupt())
soc/tegra: fuse: Fix index bug in get_process_id
USB: serial: option: add interface-number sanity check to flag handling
USB: gadget: f_acm: add support for SuperSpeed Plus
USB: gadget: f_midi: setup SuperSpeed Plus descriptors
usb: gadget: f_fs: Re-use SS descriptors for SuperSpeedPlus
USB: gadget: f_rndis: fix bitrate for SuperSpeed and above
usb: chipidea: ci_hdrc_imx: Pass DISABLE_DEVICE_STREAMING flag to imx6ul
ARM: dts: exynos: fix roles of USB 3.0 ports on Odroid XU
ARM: dts: exynos: fix USB 3.0 VBUS control and over-current pins on Exynos5410
ARM: dts: exynos: fix USB 3.0 pins supply being turned off on Odroid XU
coresight: tmc-etr: Check if page is valid before dma_map_page()
scsi: megaraid_sas: Check user-provided offsets
HID: i2c-hid: add Vero K147 to descriptor override
serial_core: Check for port state when tty is in error state
Bluetooth: Fix slab-out-of-bounds read in hci_le_direct_adv_report_evt()
quota: Sanity-check quota file headers on load
media: msi2500: assign SPI bus number dynamically
crypto: af_alg - avoid undefined behavior accessing salg_name
md: fix a warning caused by a race between concurrent md_ioctl()s
perf cs-etm: Change tuple from traceID-CPU# to traceID-metadata
perf cs-etm: Move definition of 'traceid_list' global variable from header file
drm/gma500: fix double free of gma_connector
drm/tve200: Fix handling of platform_get_irq() error
soc: renesas: rmobile-sysc: Fix some leaks in rmobile_init_pm_domains()
soc: mediatek: Check if power domains can be powered on at boot time
soc: qcom: geni: More properly switch to DMA mode
RDMA/bnxt_re: Set queue pair state when being queried
selinux: fix error initialization in inode_doinit_with_dentry()
ARM: dts: aspeed: s2600wf: Fix VGA memory region location
RDMA/rxe: Compute PSN windows correctly
x86/mm/ident_map: Check for errors from ident_pud_init()
ARM: p2v: fix handling of LPAE translation in BE mode
x86/apic: Fix x2apic enablement without interrupt remapping
sched/deadline: Fix sched_dl_global_validate()
sched: Reenable interrupts in do_sched_yield()
crypto: talitos - Endianess in current_desc_hdr()
crypto: talitos - Fix return type of current_desc_hdr()
crypto: inside-secure - Fix sizeof() mismatch
powerpc/64: Set up a kernel stack for secondaries before cpu_restore()
spi: img-spfi: fix reference leak in img_spfi_resume
drm/msm/dsi_pll_10nm: restore VCO rate during restore_state
ASoC: pcm: DRAIN support reactivation
selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling
arm64: dts: exynos: Include common syscon restart/poweroff for Exynos7
arm64: dts: exynos: Correct psci compatible used on Exynos7
Bluetooth: Fix null pointer dereference in hci_event_packet()
Bluetooth: hci_h5: fix memory leak in h5_close
spi: spi-ti-qspi: fix reference leak in ti_qspi_setup
spi: tegra20-slink: fix reference leak in slink ops of tegra20
spi: tegra20-sflash: fix reference leak in tegra_sflash_resume
spi: tegra114: fix reference leak in tegra spi ops
spi: bcm63xx-hsspi: fix missing clk_disable_unprepare() on error in bcm63xx_hsspi_resume
mwifiex: fix mwifiex_shutdown_sw() causing sw reset failure
ASoC: wm8998: Fix PM disable depth imbalance on error
ASoC: arizona: Fix a wrong free in wm8997_probe
RDMa/mthca: Work around -Wenum-conversion warning
MIPS: BCM47XX: fix kconfig dependency bug for BCM47XX_BCMA
crypto: qat - fix status check in qat_hal_put_rel_rd_xfer()
staging: greybus: codecs: Fix reference counter leak in error handling
staging: gasket: interrupt: fix the missed eventfd_ctx_put() in gasket_interrupt.c
media: tm6000: Fix sizeof() mismatches
media: mtk-vcodec: add missing put_device() call in mtk_vcodec_release_dec_pm()
ASoC: meson: fix COMPILE_TEST error
scsi: core: Fix VPD LUN ID designator priorities
media: solo6x10: fix missing snd_card_free in error handling case
video: fbdev: atmel_lcdfb: fix return error code in atmel_lcdfb_of_init()
drm/omap: dmm_tiler: fix return error code in omap_dmm_probe()
Input: ads7846 - fix race that causes missing releases
Input: ads7846 - fix integer overflow on Rt calculation
Input: ads7846 - fix unaligned access on 7845
usb/max3421: fix return error code in max3421_probe()
spi: mxs: fix reference leak in mxs_spi_probe
powerpc/feature: Fix CPU_FTRS_ALWAYS by removing CPU_FTRS_GENERIC_32
crypto: crypto4xx - Replace bitwise OR with logical OR in crypto4xx_build_pd
crypto: omap-aes - Fix PM disable depth imbalance in omap_aes_probe
spi: fix resource leak for drivers without .remove callback
soc: ti: knav_qmss: fix reference leak in knav_queue_probe
soc: ti: Fix reference imbalance in knav_dma_probe
drivers: soc: ti: knav_qmss_queue: Fix error return code in knav_queue_probe
Input: omap4-keypad - fix runtime PM error handling
RDMA/cxgb4: Validate the number of CQEs
memstick: fix a double-free bug in memstick_check
ARM: dts: at91: sama5d4_xplained: add pincontrol for USB Host
ARM: dts: at91: sama5d3_xplained: add pincontrol for USB Host
orinoco: Move context allocation after processing the skb
cw1200: fix missing destroy_workqueue() on error in cw1200_init_common
dmaengine: mv_xor_v2: Fix error return code in mv_xor_v2_probe()
media: siano: fix memory leak of debugfs members in smsdvb_hotplug
platform/x86: mlx-platform: Remove PSU EEPROM from default platform configuration
platform/x86: mlx-platform: Remove PSU EEPROM from MSN274x platform configuration
samples: bpf: Fix lwt_len_hist reusing previous BPF map
mips: cdmm: fix use-after-free in mips_cdmm_bus_discover
media: max2175: fix max2175_set_csm_mode() error code
slimbus: qcom-ngd-ctrl: Avoid sending power requests without QMI
HSI: omap_ssi: Don't jump to free ID in ssi_add_controller()
ARM: dts: Remove non-existent i2c1 from 98dx3236
arm64: dts: rockchip: Set dr_mode to "host" for OTG on rk3328-roc-cc
power: supply: axp288_charger: Fix HP Pavilion x2 10 DMI matching
power: supply: bq24190_charger: fix reference leak
genirq/irqdomain: Don't try to free an interrupt that has no mapping
PCI: Bounds-check command-line resource alignment requests
PCI: Fix overflow in command-line resource alignment requests
PCI: iproc: Fix out-of-bound array accesses
arm64: dts: meson: fix spi-max-frequency on Khadas VIM2
ARM: dts: at91: at91sam9rl: fix ADC triggers
platform/x86: dell-smbios-base: Fix error return code in dell_smbios_init
ath10k: Fix the parsing error in service available event
ath10k: Fix an error handling path
ath10k: Release some resources in an error handling path
NFSv4.2: condition READDIR's mask for security label based on LSM state
SUNRPC: xprt_load_transport() needs to support the netid "rdma6"
lockd: don't use interval-based rebinding over TCP
NFS: switch nfsiod to be an UNBOUND workqueue.
vfio-pci: Use io_remap_pfn_range() for PCI IO memory
media: saa7146: fix array overflow in vidioc_s_audio()
clocksource/drivers/cadence_ttc: Fix memory leak in ttc_setup_clockevent()
ARM: dts: at91: sama5d2: map securam as device
pinctrl: falcon: add missing put_device() call in pinctrl_falcon_probe()
arm64: dts: rockchip: Fix UART pull-ups on rk3328
memstick: r592: Fix error return in r592_probe()
net/mlx5: Properly convey driver version to firmware
ASoC: jz4740-i2s: add missed checks for clk_get()
dm ioctl: fix error return code in target_message
clocksource/drivers/arm_arch_timer: Correct fault programming of CNTKCTL_EL1.EVNTI
cpufreq: highbank: Add missing MODULE_DEVICE_TABLE
cpufreq: mediatek: Add missing MODULE_DEVICE_TABLE
cpufreq: st: Add missing MODULE_DEVICE_TABLE
cpufreq: loongson1: Add missing MODULE_ALIAS
cpufreq: scpi: Add missing MODULE_ALIAS
scsi: qedi: Fix missing destroy_workqueue() on error in __qedi_probe
scsi: pm80xx: Fix error return in pm8001_pci_probe()
seq_buf: Avoid type mismatch for seq_buf_init
scsi: fnic: Fix error return code in fnic_probe()
platform/x86: mlx-platform: Fix item counter assignment for MSN2700, MSN24xx systems
powerpc/pseries/hibernation: drop pseries_suspend_begin() from suspend ops
powerpc/pseries/hibernation: remove redundant cacheinfo update
usb: ehci-omap: Fix PM disable depth umbalance in ehci_hcd_omap_probe
usb: oxu210hp-hcd: Fix memory leak in oxu_create
speakup: fix uninitialized flush_lock
nfsd: Fix message level for normal termination
nfs_common: need lock during iterate through the list
x86/kprobes: Restore BTF if the single-stepping is cancelled
bus: fsl-mc: fix error return code in fsl_mc_object_allocate()
clk: tegra: Fix duplicated SE clock entry
extcon: max77693: Fix modalias string
mac80211: don't set set TDLS STA bandwidth wider than possible
ASoC: wm_adsp: remove "ctl" from list on error in wm_adsp_create_control()
irqchip/alpine-msi: Fix freeing of interrupts on allocation error path
watchdog: sirfsoc: Add missing dependency on HAS_IOMEM
watchdog: sprd: remove watchdog disable from resume fail path
watchdog: sprd: check busy bit before new loading rather than after that
watchdog: Fix potential dereferencing of null pointer
um: Monitor error events in IRQ controller
um: tty: Fix handling of close in tty lines
um: chan_xterm: Fix fd leak
nfc: s3fwrn5: Release the nfc firmware
powerpc/ps3: use dma_mapping_error()
checkpatch: fix unescaped left brace
net: bcmgenet: Fix a resource leak in an error handling path in the probe functin
net: allwinner: Fix some resources leak in the error handling path of the probe and in the remove function
net: korina: fix return value
libnvdimm/label: Return -ENXIO for no slot in __blk_label_update
watchdog: qcom: Avoid context switch in restart handler
watchdog: coh901327: add COMMON_CLK dependency
clk: ti: Fix memleak in ti_fapll_synth_setup
pwm: zx: Add missing cleanup in error path
pwm: lp3943: Dynamically allocate PWM chip base
perf record: Fix memory leak when using '--user-regs=?' to list registers
qlcnic: Fix error code in probe
clk: s2mps11: Fix a resource leak in error handling paths in the probe function
clk: sunxi-ng: Make sure divider tables have sentinel
kconfig: fix return value of do_error_if()
ARM: sunxi: Add machine match for the Allwinner V3 SoC
cfg80211: initialize rekey_data
fix namespaced fscaps when !CONFIG_SECURITY
lwt: Disable BH too in run_lwt_bpf()
Input: cros_ec_keyb - send 'scancodes' in addition to key events
Input: goodix - add upside-down quirk for Teclast X98 Pro tablet
media: gspca: Fix memory leak in probe
media: sunxi-cir: ensure IR is handled when it is continuous
media: netup_unidvb: Don't leak SPI master in probe error path
media: ipu3-cio2: Remove traces of returned buffers
media: ipu3-cio2: Return actual subdev format
media: ipu3-cio2: Serialise access to pad format
media: ipu3-cio2: Validate mbus format in setting subdev format
media: ipu3-cio2: Make the field on subdev format V4L2_FIELD_NONE
Input: cyapa_gen6 - fix out-of-bounds stack access
ALSA: hda/ca0132 - Change Input Source enum strings.
PM: ACPI: PCI: Drop acpi_pm_set_bridge_wakeup()
Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"
ACPI: PNP: compare the string length in the matching_id()
ALSA: hda: Fix regressions on clear and reconfig sysfs
ALSA: hda/realtek - Enable headset mic of ASUS X430UN with ALC256
ALSA: hda/realtek - Enable headset mic of ASUS Q524UQK with ALC255
ALSA: pcm: oss: Fix a few more UBSAN fixes
ALSA: hda/realtek: Add quirk for MSI-GP73
ALSA: hda/realtek: Apply jack fixup for Quanta NL3
ALSA: usb-audio: Add VID to support native DSD reproduction on FiiO devices
ALSA: usb-audio: Disable sample read check if firmware doesn't give back
s390/smp: perform initial CPU reset also for SMT siblings
s390/kexec_file: fix diag308 subcode when loading crash kernel
s390/dasd: fix hanging device offline processing
s390/dasd: prevent inconsistent LCU device data
s390/dasd: fix list corruption of pavgroup group list
s390/dasd: fix list corruption of lcu list
staging: comedi: mf6x4: Fix AI end-of-conversion detection
powerpc/perf: Exclude kernel samples while counting events in user space.
crypto: ecdh - avoid unaligned accesses in ecdh_set_secret()
EDAC/amd64: Fix PCI component registration
USB: serial: mos7720: fix parallel-port state restore
USB: serial: digi_acceleport: fix write-wakeup deadlocks
USB: serial: keyspan_pda: fix dropped unthrottle interrupts
USB: serial: keyspan_pda: fix write deadlock
USB: serial: keyspan_pda: fix stalled writes
USB: serial: keyspan_pda: fix write-wakeup use-after-free
USB: serial: keyspan_pda: fix tx-unthrottle use-after-free
USB: serial: keyspan_pda: fix write unthrottling
ext4: fix a memory leak of ext4_free_data
ext4: fix deadlock with fs freezing and EA inodes
KVM: arm64: Introduce handling of AArch32 TTBCR2 traps
ARM: dts: pandaboard: fix pinmux for gpio user button of Pandaboard ES
ARM: dts: at91: sama5d2: fix CAN message ram offset and size
powerpc: Fix incorrect stw{, ux, u, x} instructions in __set_pte_at
powerpc/rtas: Fix typo of ibm,open-errinjct in RTAS filter
powerpc/xmon: Change printk() to pr_cont()
powerpc/powernv/memtrace: Don't leak kernel memory to user space
powerpc/powernv/memtrace: Fix crashing the kernel when enabling concurrently
ima: Don't modify file descriptor mode on the fly
ceph: fix race in concurrent __ceph_remove_cap invocations
SMB3: avoid confusing warning message on mount to Azure
SMB3.1.1: do not log warning message if server doesn't populate salt
ubifs: wbuf: Don't leak kernel memory to flash
jffs2: Fix GC exit abnormally
jfs: Fix array index bounds check in dbAdjTree
drm/dp_aux_dev: check aux_dev before use in drm_dp_aux_dev_get_by_minor()
spi: spi-sh: Fix use-after-free on unbind
spi: davinci: Fix use-after-free on unbind
spi: pic32: Don't leak DMA channels in probe error path
spi: rb4xx: Don't leak SPI master in probe error path
spi: sc18is602: Don't leak SPI master in probe error path
spi: st-ssc4: Fix unbalanced pm_runtime_disable() in probe error path
spi: mt7621: fix missing clk_disable_unprepare() on error in mt7621_spi_probe
soc: qcom: smp2p: Safely acquire spinlock without IRQs
mtd: spinand: Fix OOB read
mtd: parser: cmdline: Fix parsing of part-names with colons
mtd: rawnand: qcom: Fix DMA sync on FLASH_STATUS register read
scsi: lpfc: Fix invalid sleeping context in lpfc_sli4_nvmet_alloc()
scsi: lpfc: Re-fix use after free in lpfc_rq_buf_free()
iio: buffer: Fix demux update
iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc_resume
iio:light:rpr0521: Fix timestamp alignment and prevent data leak.
iio:light:st_uvis25: Fix timestamp alignment and prevent data leak.
iio:pressure:mpl3115: Force alignment of buffer
iio:imu:bmi160: Fix too large a buffer.
md/cluster: block reshape with remote resync job
md/cluster: fix deadlock when node is doing resync job
pinctrl: sunxi: Always call chained_irq_{enter, exit} in sunxi_pinctrl_irq_handler
clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9
xen-blkback: set ring->xenblkd to NULL after kthread_stop()
xen/xenbus: Allow watches discard events before queueing
xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path()
xen/xenbus/xen_bus_type: Support will_handle watch callback
xen/xenbus: Count pending messages for each watch
xenbus/xenbus_backend: Disallow pending watch messages
libnvdimm/namespace: Fix reaping of invalidated block-window-namespace labels
platform/x86: intel-vbtn: Allow switch events on Acer Switch Alpha 12
PCI: Fix pci_slot_release() NULL pointer dereference
platform/x86: mlx-platform: remove an unused variable
Linux 4.19.164
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8e2d24b45393ee2360186893d4e578e20156c7f1
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||
|
Arvind Sankar
|
b207caff41 |
compiler.h: fix barrier_data() on clang
commit 3347acc6fcd4ee71ad18a9ff9d9dac176b517329 upstream. Commit |
||
|
Greg Kroah-Hartman
|
91d4544b24 |
Merge 4.19.124 into android-4.19-stable
Changes in 4.19.124 net: dsa: Do not make user port errors fatal shmem: fix possible deadlocks on shmlock_user_lock net/sonic: Fix a resource leak in an error handling path in 'jazz_sonic_probe()' net: moxa: Fix a potential double 'free_irq()' drop_monitor: work around gcc-10 stringop-overflow warning virtio-blk: handle block_device_operations callbacks after hot unplug scsi: sg: add sg_remove_request in sg_write mmc: sdhci-acpi: Add SDHCI_QUIRK2_BROKEN_64_BIT_DMA for AMDI0040 net: fix a potential recursive NETDEV_FEAT_CHANGE netlabel: cope with NULL catmap net: phy: fix aneg restart in phy_ethtool_set_eee pppoe: only process PADT targeted at local interfaces Revert "ipv6: add mtu lock check in __ip6_rt_update_pmtu" tcp: fix error recovery in tcp_zerocopy_receive() virtio_net: fix lockdep warning on 32 bit hinic: fix a bug of ndo_stop net: dsa: loop: Add module soft dependency net: ipv4: really enforce backoff for redirects netprio_cgroup: Fix unlimited memory leak of v2 cgroups net: tcp: fix rx timestamp behavior for tcp_recvmsg tcp: fix SO_RCVLOWAT hangs with fat skbs riscv: fix vdso build with lld dmaengine: pch_dma.c: Avoid data race between probe and irq handler dmaengine: mmp_tdma: Reset channel error on release cpufreq: intel_pstate: Only mention the BIOS disabling turbo mode once ALSA: hda/hdmi: fix race in monitor detection during probe drm/qxl: lost qxl_bo_kunmap_atomic_page in qxl_image_init_helper() ipc/util.c: sysvipc_find_ipc() incorrectly updates position index ALSA: hda/realtek - Fix S3 pop noise on Dell Wyse gfs2: Another gfs2_walk_metadata fix pinctrl: baytrail: Enable pin configuration setting for GPIO chip pinctrl: cherryview: Add missing spinlock usage in chv_gpio_irq_handler i40iw: Fix error handling in i40iw_manage_arp_cache() mmc: core: Check request type before completing the request mmc: block: Fix request completion in the CQE timeout path NFS: Fix fscache super_cookie index_key from changing after umount nfs: fscache: use timespec64 in inode auxdata NFSv4: Fix fscache cookie aux_data to ensure change_attr is included netfilter: conntrack: avoid gcc-10 zero-length-bounds warning arm64: fix the flush_icache_range arguments in machine_kexec netfilter: nft_set_rbtree: Introduce and use nft_rbtree_interval_start() IB/mlx4: Test return value of calls to ib_get_cached_pkey hwmon: (da9052) Synchronize access with mfd pnp: Use list_for_each_entry() instead of open coding gcc-10 warnings: fix low-hanging fruit kbuild: compute false-positive -Wmaybe-uninitialized cases in Kconfig Stop the ad-hoc games with -Wno-maybe-initialized gcc-10: disable 'zero-length-bounds' warning for now gcc-10: disable 'array-bounds' warning for now gcc-10: disable 'stringop-overflow' warning for now gcc-10: disable 'restrict' warning for now gcc-10: avoid shadowing standard library 'free()' in crypto ALSA: hda/realtek - Limit int mic boost for Thinkpad T530 ALSA: rawmidi: Fix racy buffer resize under concurrent accesses ALSA: usb-audio: Add control message quirk delay for Kingston HyperX headset usb: core: hub: limit HUB_QUIRK_DISABLE_AUTOSUSPEND to USB5534B usb: host: xhci-plat: keep runtime active when removing host USB: gadget: fix illegal array access in binding with UDC usb: xhci: Fix NULL pointer dereference when enqueuing trbs from urb sg list ARM: dts: dra7: Fix bus_dma_limit for PCIe ARM: dts: imx27-phytec-phycard-s-rdk: Fix the I2C1 pinctrl entries cifs: fix leaked reference on requeued write x86: Fix early boot crash on gcc-10, third try x86/unwind/orc: Fix error handling in __unwind_start() exec: Move would_dump into flush_old_exec clk: rockchip: fix incorrect configuration of rk3228 aclk_gpu* clocks dwc3: Remove check for HWO flag in dwc3_gadget_ep_reclaim_trb_sg() usb: gadget: net2272: Fix a memory leak in an error handling path in 'net2272_plat_probe()' usb: gadget: audio: Fix a missing error return value in audio_bind() usb: gadget: legacy: fix error return code in gncm_bind() usb: gadget: legacy: fix error return code in cdc_bind() Revert "ALSA: hda/realtek: Fix pop noise on ALC225" clk: Unlink clock if failed to prepare or enable arm64: dts: rockchip: Replace RK805 PMIC node name with "pmic" on rk3328 boards arm64: dts: rockchip: Rename dwc3 device nodes on rk3399 to make dtc happy ARM: dts: r8a73a4: Add missing CMT1 interrupts arm64: dts: renesas: r8a77980: Fix IPMMU VIP[01] nodes ARM: dts: r8a7740: Add missing extal2 to CPG node KVM: x86: Fix off-by-one error in kvm_vcpu_ioctl_x86_setup_mce Makefile: disallow data races on gcc-10 as well Linux 4.19.124 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> Change-Id: I3d253f677cc08337e64d316005a0ec0c33717940 |
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|
Borislav Petkov
|
15b4f26b75 |
x86: Fix early boot crash on gcc-10, third try
commit a9a3ed1eff3601b63aea4fb462d8b3b92c7c1e7e upstream. ... or the odyssey of trying to disable the stack protector for the function which generates the stack canary value. The whole story started with Sergei reporting a boot crash with a kernel built with gcc-10: Kernel panic — not syncing: stack-protector: Kernel stack is corrupted in: start_secondary CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc5—00235—gfffb08b37df9 #139 Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./H77M—D3H, BIOS F12 11/14/2013 Call Trace: dump_stack panic ? start_secondary __stack_chk_fail start_secondary secondary_startup_64 -—-[ end Kernel panic — not syncing: stack—protector: Kernel stack is corrupted in: start_secondary This happens because gcc-10 tail-call optimizes the last function call in start_secondary() - cpu_startup_entry() - and thus emits a stack canary check which fails because the canary value changes after the boot_init_stack_canary() call. To fix that, the initial attempt was to mark the one function which generates the stack canary with: __attribute__((optimize("-fno-stack-protector"))) ... start_secondary(void *unused) however, using the optimize attribute doesn't work cumulatively as the attribute does not add to but rather replaces previously supplied optimization options - roughly all -fxxx options. The key one among them being -fno-omit-frame-pointer and thus leading to not present frame pointer - frame pointer which the kernel needs. The next attempt to prevent compilers from tail-call optimizing the last function call cpu_startup_entry(), shy of carving out start_secondary() into a separate compilation unit and building it with -fno-stack-protector, was to add an empty asm(""). This current solution was short and sweet, and reportedly, is supported by both compilers but we didn't get very far this time: future (LTO?) optimization passes could potentially eliminate this, which leads us to the third attempt: having an actual memory barrier there which the compiler cannot ignore or move around etc. That should hold for a long time, but hey we said that about the other two solutions too so... Reported-by: Sergei Trofimovich <slyfox@gentoo.org> Signed-off-by: Borislav Petkov <bp@suse.de> Tested-by: Kalle Valo <kvalo@codeaurora.org> Cc: <stable@vger.kernel.org> Link: https://lkml.kernel.org/r/20200314164451.346497-1-slyfox@gentoo.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Greg Kroah-Hartman
|
a13256124f |
Merge 4.19.118 into android-4.19
Changes in 4.19.118
arm, bpf: Fix offset overflow for BPF_MEM BPF_DW
objtool: Fix switch table detection in .text.unlikely
scsi: sg: add sg_remove_request in sg_common_write
ext4: use non-movable memory for superblock readahead
watchdog: sp805: fix restart handler
arm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0
ARM: dts: imx6: Use gpc for FEC interrupt controller to fix wake on LAN.
netfilter: nf_tables: report EOPNOTSUPP on unsupported flags/object type
irqchip/mbigen: Free msi_desc on device teardown
ALSA: hda: Don't release card at firmware loading error
of: unittest: kmemleak on changeset destroy
of: unittest: kmemleak in of_unittest_platform_populate()
of: unittest: kmemleak in of_unittest_overlay_high_level()
of: overlay: kmemleak in dup_and_fixup_symbol_prop()
x86/Hyper-V: Report crash register data or kmsg before running crash kernel
lib/raid6: use vdupq_n_u8 to avoid endianness warnings
video: fbdev: sis: Remove unnecessary parentheses and commented code
rbd: avoid a deadlock on header_rwsem when flushing notifies
rbd: call rbd_dev_unprobe() after unwatching and flushing notifies
xsk: Add missing check on user supplied headroom size
x86/Hyper-V: Unload vmbus channel in hv panic callback
x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump
x86/Hyper-V: Trigger crash enlightenment only once during system crash.
x86/Hyper-V: Report crash register data when sysctl_record_panic_msg is not set
x86/Hyper-V: Report crash data in die() when panic_on_oops is set
clk: at91: usb: continue if clk_hw_round_rate() return zero
power: supply: bq27xxx_battery: Silence deferred-probe error
clk: tegra: Fix Tegra PMC clock out parents
soc: imx: gpc: fix power up sequencing
rtc: 88pm860x: fix possible race condition
NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
NFS: direct.c: Fix memory leak of dreq when nfs_get_lock_context fails
s390/cpuinfo: fix wrong output when CPU0 is offline
powerpc/maple: Fix declaration made after definition
s390/cpum_sf: Fix wrong page count in error message
ext4: do not commit super on read-only bdev
um: ubd: Prevent buffer overrun on command completion
cifs: Allocate encryption header through kmalloc
include/linux/swapops.h: correct guards for non_swap_entry()
percpu_counter: fix a data race at vm_committed_as
compiler.h: fix error in BUILD_BUG_ON() reporting
KVM: s390: vsie: Fix possible race when shadowing region 3 tables
x86: ACPI: fix CPU hotplug deadlock
drm/amdkfd: kfree the wrong pointer
NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
f2fs: fix NULL pointer dereference in f2fs_write_begin()
drm/vc4: Fix HDMI mode validation
iommu/vt-d: Fix mm reference leak
ext2: fix empty body warnings when -Wextra is used
ext2: fix debug reference to ext2_xattr_cache
power: supply: axp288_fuel_gauge: Broaden vendor check for Intel Compute Sticks.
libnvdimm: Out of bounds read in __nd_ioctl()
iommu/amd: Fix the configuration of GCR3 table root pointer
f2fs: fix to wait all node page writeback
net: dsa: bcm_sf2: Fix overflow checks
fbdev: potential information leak in do_fb_ioctl()
iio: si1133: read 24-bit signed integer for measurement
tty: evh_bytechan: Fix out of bounds accesses
locktorture: Print ratio of acquisitions, not failures
mtd: spinand: Explicitly use MTD_OPS_RAW to write the bad block marker to OOB
mtd: lpddr: Fix a double free in probe()
mtd: phram: fix a double free issue in error path
KEYS: Don't write out to userspace while holding key semaphore
bpf: fix buggy r0 retval refinement for tracing helpers
Linux 4.19.118
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ife34f739f719c332c7b1d22b1832179be6a16800
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Vegard Nossum
|
9af5777e75 |
compiler.h: fix error in BUILD_BUG_ON() reporting
[ Upstream commit af9c5d2e3b355854ff0e4acfbfbfadcd5198a349 ]
compiletime_assert() uses __LINE__ to create a unique function name. This
means that if you have more than one BUILD_BUG_ON() in the same source
line (which can happen if they appear e.g. in a macro), then the error
message from the compiler might output the wrong condition.
For this source file:
#include <linux/build_bug.h>
#define macro() \
BUILD_BUG_ON(1); \
BUILD_BUG_ON(0);
void foo()
{
macro();
}
gcc would output:
./include/linux/compiler.h:350:38: error: call to `__compiletime_assert_9' declared with attribute error: BUILD_BUG_ON failed: 0
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
However, it was not the BUILD_BUG_ON(0) that failed, so it should say 1
instead of 0. With this patch, we use __COUNTER__ instead of __LINE__, so
each BUILD_BUG_ON() gets a different function name and the correct
condition is printed:
./include/linux/compiler.h:350:38: error: call to `__compiletime_assert_0' declared with attribute error: BUILD_BUG_ON failed: 1
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Daniel Santos <daniel.santos@pobox.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Joe Perches <joe@perches.com>
Link: http://lkml.kernel.org/r/20200331112637.25047-1-vegard.nossum@oracle.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Martin Schwidefsky
|
0ab02b6a3a |
BACKPORT: compiler: remove __no_sanitize_address_or_inline again
(Upstream commit 163c8d54a997153ee1a1e07fcac087492ad85b37). The __no_sanitize_address_or_inline and __no_kasan_or_inline defines are almost identical. The only difference is that __no_kasan_or_inline does not have the 'notrace' attribute. To be able to replace __no_sanitize_address_or_inline with the older definition, add 'notrace' to __no_kasan_or_inline and change to two users of __no_sanitize_address_or_inline in the s390 code. The 'notrace' option is necessary for e.g. the __load_psw_mask function in arch/s390/include/asm/processor.h. Without the option it is possible to trace __load_psw_mask which leads to kernel stack overflow. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Pointed-out-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Change-Id: I27af631729f8ea52e55f31c02f584c01a0918073 Signed-off-by: Andrey Konovalov <andreyknvl@google.com> Bug: 128674696 |
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Masahiro Yamada
|
753328727c |
compiler.h: give up __compiletime_assert_fallback()
commit 81b45683487a51b0f4d3b29d37f20d6d078544e4 upstream.
__compiletime_assert_fallback() is supposed to stop building earlier
by using the negative-array-size method in case the compiler does not
support "error" attribute, but has never worked like that.
You can simply try:
BUILD_BUG_ON(1);
GCC immediately terminates the build, but Clang does not report
anything because Clang does not support the "error" attribute now.
It will later fail at link time, but __compiletime_assert_fallback()
is not working at least.
The root cause is commit
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ndesaulniers@google.com
|
19e6ff0146 |
compiler.h: update definition of unreachable()
[ Upstream commit fe0640eb30b7da261ae84d252ed9ed3c7e68dfd8 ]
Fixes the objtool warning seen with Clang:
arch/x86/mm/fault.o: warning: objtool: no_context()+0x220: unreachable
instruction
Fixes commit
|
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Michael S. Tsirkin
|
4047a7ad3b |
include/linux/compiler*.h: fix OPTIMIZER_HIDE_VAR
[ Upstream commit 3e2ffd655cc6a694608d997738989ff5572a8266 ] Since commit |
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Ard Biesheuvel
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7290d58095 |
module: use relative references for __ksymtab entries
An ordinary arm64 defconfig build has ~64 KB worth of __ksymtab entries, each consisting of two 64-bit fields containing absolute references, to the symbol itself and to a char array containing its name, respectively. When we build the same configuration with KASLR enabled, we end up with an additional ~192 KB of relocations in the .init section, i.e., one 24 byte entry for each absolute reference, which all need to be processed at boot time. Given how the struct kernel_symbol that describes each entry is completely local to module.c (except for the references emitted by EXPORT_SYMBOL() itself), we can easily modify it to contain two 32-bit relative references instead. This reduces the size of the __ksymtab section by 50% for all 64-bit architectures, and gets rid of the runtime relocations entirely for architectures implementing KASLR, either via standard PIE linking (arm64) or using custom host tools (x86). Note that the binary search involving __ksymtab contents relies on each section being sorted by symbol name. This is implemented based on the input section names, not the names in the ksymtab entries, so this patch does not interfere with that. Given that the use of place-relative relocations requires support both in the toolchain and in the module loader, we cannot enable this feature for all architectures. So make it dependent on whether CONFIG_HAVE_ARCH_PREL32_RELOCATIONS is defined. Link: http://lkml.kernel.org/r/20180704083651.24360-4-ard.biesheuvel@linaro.org Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Jessica Yu <jeyu@kernel.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Reviewed-by: Will Deacon <will.deacon@arm.com> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morris <james.morris@microsoft.com> Cc: James Morris <jmorris@namei.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Kees Cook <keescook@chromium.org> Cc: Nicolas Pitre <nico@linaro.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Russell King <linux@armlinux.org.uk> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Garnier <thgarnie@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Rasmus Villemoes
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203583990c |
linux/compiler.h: don't use bool
Appararently, it's possible to have a non-trivial TU include a few
headers, including linux/build_bug.h, without ending up with
linux/types.h. So the 0day bot sent me
config: um-x86_64_defconfig (attached as .config)
>> include/linux/compiler.h:316:3: error: unknown type name 'bool'; did you mean '_Bool'?
bool __cond = !(condition); \
for something I'm working on.
Rather than contributing to the #include madness and including
linux/types.h from compiler.h, just use int.
Link: http://lkml.kernel.org/r/20180817101036.20969-1-linux@rasmusvillemoes.dk
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Christopher Li <sparse@chrisli.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mikulas Patocka
|
2026d35741 |
branch-check: fix long->int truncation when profiling branches
The function __builtin_expect returns long type (see the gcc
documentation), and so do macros likely and unlikely. Unfortunatelly, when
CONFIG_PROFILE_ANNOTATED_BRANCHES is selected, the macros likely and
unlikely expand to __branch_check__ and __branch_check__ truncates the
long type to int. This unintended truncation may cause bugs in various
kernel code (we found a bug in dm-writecache because of it), so it's
better to fix __branch_check__ to return long.
Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1805300818140.24812@file01.intranet.prod.int.rdu2.redhat.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: stable@vger.kernel.org
Fixes:
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Arnd Bergmann
|
173a3efd3e |
bug.h: work around GCC PR82365 in BUG()
Looking at functions with large stack frames across all architectures led me discovering that BUG() suffers from the same problem as fortify_panic(), which I've added a workaround for already. In short, variables that go out of scope by calling a noreturn function or __builtin_unreachable() keep using stack space in functions afterwards. A workaround that was identified is to insert an empty assembler statement just before calling the function that doesn't return. I'm adding a macro "barrier_before_unreachable()" to document this, and insert calls to that in all instances of BUG() that currently suffer from this problem. The files that saw the largest change from this had these frame sizes before, and much less with my patch: fs/ext4/inode.c:82:1: warning: the frame size of 1672 bytes is larger than 800 bytes [-Wframe-larger-than=] fs/ext4/namei.c:434:1: warning: the frame size of 904 bytes is larger than 800 bytes [-Wframe-larger-than=] fs/ext4/super.c:2279:1: warning: the frame size of 1160 bytes is larger than 800 bytes [-Wframe-larger-than=] fs/ext4/xattr.c:146:1: warning: the frame size of 1168 bytes is larger than 800 bytes [-Wframe-larger-than=] fs/f2fs/inode.c:152:1: warning: the frame size of 1424 bytes is larger than 800 bytes [-Wframe-larger-than=] net/netfilter/ipvs/ip_vs_core.c:1195:1: warning: the frame size of 1068 bytes is larger than 800 bytes [-Wframe-larger-than=] net/netfilter/ipvs/ip_vs_core.c:395:1: warning: the frame size of 1084 bytes is larger than 800 bytes [-Wframe-larger-than=] net/netfilter/ipvs/ip_vs_ftp.c:298:1: warning: the frame size of 928 bytes is larger than 800 bytes [-Wframe-larger-than=] net/netfilter/ipvs/ip_vs_ftp.c:418:1: warning: the frame size of 908 bytes is larger than 800 bytes [-Wframe-larger-than=] net/netfilter/ipvs/ip_vs_lblcr.c:718:1: warning: the frame size of 960 bytes is larger than 800 bytes [-Wframe-larger-than=] drivers/net/xen-netback/netback.c:1500:1: warning: the frame size of 1088 bytes is larger than 800 bytes [-Wframe-larger-than=] In case of ARC and CRIS, it turns out that the BUG() implementation actually does return (or at least the compiler thinks it does), resulting in lots of warnings about uninitialized variable use and leaving noreturn functions, such as: block/cfq-iosched.c: In function 'cfq_async_queue_prio': block/cfq-iosched.c:3804:1: error: control reaches end of non-void function [-Werror=return-type] include/linux/dmaengine.h: In function 'dma_maxpq': include/linux/dmaengine.h:1123:1: error: control reaches end of non-void function [-Werror=return-type] This makes them call __builtin_trap() instead, which should normally dump the stack and kill the current process, like some of the other architectures already do. I tried adding barrier_before_unreachable() to panic() and fortify_panic() as well, but that had very little effect, so I'm not submitting that patch. Vineet said: : For ARC, it is double win. : : 1. Fixes 3 -Wreturn-type warnings : : | ../net/core/ethtool.c:311:1: warning: control reaches end of non-void function : [-Wreturn-type] : | ../kernel/sched/core.c:3246:1: warning: control reaches end of non-void function : [-Wreturn-type] : | ../include/linux/sunrpc/svc_xprt.h:180:1: warning: control reaches end of : non-void function [-Wreturn-type] : : 2. bloat-o-meter reports code size improvements as gcc elides the : generated code for stack return. Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82365 Link: http://lkml.kernel.org/r/20171219114112.939391-1-arnd@arndb.de Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Vineet Gupta <vgupta@synopsys.com> [arch/arc] Tested-by: Vineet Gupta <vgupta@synopsys.com> [arch/arc] Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Christopher Li <sparse@chrisli.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Kees Cook <keescook@chromium.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Will Deacon <will.deacon@arm.com> Cc: "Steven Rostedt (VMware)" <rostedt@goodmis.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
|
178e834c47 |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu: "This fixes the following issues: - oversize stack frames on mn10300 in sha3-generic - warning on old compilers in sha3-generic - API error in sun4i_ss_prng - potential dead-lock in sun4i_ss_prng - null-pointer dereference in sha512-mb - endless loop when DECO acquire fails in caam - kernel oops when hashing empty message in talitos" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: sun4i_ss_prng - convert lock to _bh in sun4i_ss_prng_generate crypto: sun4i_ss_prng - fix return value of sun4i_ss_prng_generate crypto: caam - fix endless loop when DECO acquire fails crypto: sha3-generic - Use __optimize to support old compilers compiler-gcc.h: __nostackprotector needs gcc-4.4 and up compiler-gcc.h: Introduce __optimize function attribute crypto: sha3-generic - deal with oversize stack frames crypto: talitos - fix Kernel Oops on hashing an empty file crypto: sha512-mb - initialize pending lengths correctly |
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Geert Uytterhoeven
|
df5d45aa08 |
compiler-gcc.h: Introduce __optimize function attribute
Create a new function attribute __optimize, which allows to specify an optimization level on a per-function basis. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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Andrey Ryabinin
|
7f1e541fc8 |
compiler.h: Add read_word_at_a_time() function.
Sometimes we know that it's safe to do potentially out-of-bounds access because we know it won't cross a page boundary. Still, KASAN will report this as a bug. Add read_word_at_a_time() function which is supposed to be used in such cases. In read_word_at_a_time() KASAN performs relaxed check - only the first byte of access is validated. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Andrey Ryabinin
|
bdb5ac801a |
compiler.h, kasan: Avoid duplicating __read_once_size_nocheck()
Instead of having two identical __read_once_size_nocheck() functions with different attributes, consolidate all the difference in new macro __no_kasan_or_inline and use it. No functional changes. Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Mark Rutland
|
b899a85043 |
compiler.h: Remove ACCESS_ONCE()
There are no longer any kernelspace uses of ACCESS_ONCE(), so we can remove the definition from <linux/compiler.h>. This patch removes the ACCESS_ONCE() definition, and updates comments which referred to it. At the same time, some inconsistent and redundant whitespace is removed from comments. Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Joe Perches <joe@perches.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: apw@canonical.com Link: http://lkml.kernel.org/r/20171127103824.36526-4-mark.rutland@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
|
050ab10a64 |
Merge branch 'linus' into core/objtool, to pick up dependent commits
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Josh Poimboeuf
|
10259821ac |
objtool: Make unreachable annotation inline asms explicitly volatile
Add 'volatile' to the unreachable annotation macro inline asm statements. They're already implicitly volatile because they don't have output constraints, but it's clearer and more robust to make them explicitly volatile. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/28659257b7a6adf4a7f65920dad70b2b0226e996.1509974104.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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|
Josh Poimboeuf
|
d0c2e691d1 |
objtool: Add a comment for the unreachable annotation macros
Add a comment for the unreachable annotation macros to explain their purpose and the '__COUNTER__' label hack. Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1570e48d9f87e0fc6f0126c32e7e1de6e109cb67.1509974104.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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|
Ingo Molnar
|
8c5db92a70 |
Merge branch 'linus' into locking/core, to resolve conflicts
Conflicts: include/linux/compiler-clang.h include/linux/compiler-gcc.h include/linux/compiler-intel.h include/uapi/linux/stddef.h Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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|
Josh Poimboeuf
|
ec1e1b6109 |
objtool: Prevent GCC from merging annotate_unreachable(), take 2
This fixes the following warning with GCC 4.6: mm/migrate.o: warning: objtool: migrate_misplaced_transhuge_page()+0x71: unreachable instruction The problem is that the compiler merged identical annotate_unreachable() inline asm blocks, resulting in a missing 'unreachable' annotation. This problem happened before, and was partially fixed with: |
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|
Greg Kroah-Hartman
|
b24413180f |
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Will Deacon
|
59ecbbe7b3 |
locking/barriers: Kill lockless_dereference()
lockless_dereference() is a nice idea, but it gained little traction in kernel code since its introduction three years ago. This is partly because it's a pain to type, but also because using READ_ONCE() instead has worked correctly on all architectures apart from Alpha, which is a fully supported but somewhat niche architecture these days. Now that READ_ONCE() has been upgraded to contain an implicit smp_read_barrier_depends() and the few callers of lockless_dereference() have been converted, we can remove lockless_dereference() altogether. Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1508840570-22169-5-git-send-email-will.deacon@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Will Deacon
|
76ebbe78f7 |
locking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()
In preparation for the removal of lockless_dereference(), which is the same as READ_ONCE() on all architectures other than Alpha, add an implicit smp_read_barrier_depends() to READ_ONCE() so that it can be used to head dependency chains on all architectures. Signed-off-by: Will Deacon <will.deacon@arm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/1508840570-22169-3-git-send-email-will.deacon@arm.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Will Deacon
|
d15155824c |
linux/compiler.h: Split into compiler.h and compiler_types.h
linux/compiler.h is included indirectly by linux/types.h via
uapi/linux/types.h -> uapi/linux/posix_types.h -> linux/stddef.h
-> uapi/linux/stddef.h and is needed to provide a proper definition of
offsetof.
Unfortunately, compiler.h requires a definition of
smp_read_barrier_depends() for defining lockless_dereference() and soon
for defining READ_ONCE(), which means that all
users of READ_ONCE() will need to include asm/barrier.h to avoid splats
such as:
In file included from include/uapi/linux/stddef.h:1:0,
from include/linux/stddef.h:4,
from arch/h8300/kernel/asm-offsets.c:11:
include/linux/list.h: In function 'list_empty':
>> include/linux/compiler.h:343:2: error: implicit declaration of function 'smp_read_barrier_depends' [-Werror=implicit-function-declaration]
smp_read_barrier_depends(); /* Enforce dependency ordering from x */ \
^
A better alternative is to include asm/barrier.h in linux/compiler.h,
but this requires a type definition for "bool" on some architectures
(e.g. x86), which is defined later by linux/types.h. Type "bool" is also
used directly in linux/compiler.h, so the whole thing is pretty fragile.
This patch splits compiler.h in two: compiler_types.h contains type
annotations, definitions and the compiler-specific parts, whereas
compiler.h #includes compiler-types.h and additionally defines macros
such as {READ,WRITE.ACCESS}_ONCE().
uapi/linux/stddef.h and linux/linkage.h are then moved over to include
linux/compiler_types.h, which fixes the build for h8 and blackfin.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1508840570-22169-2-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Linus Torvalds
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b1b6f83ac9 |
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm changes from Ingo Molnar:
"PCID support, 5-level paging support, Secure Memory Encryption support
The main changes in this cycle are support for three new, complex
hardware features of x86 CPUs:
- Add 5-level paging support, which is a new hardware feature on
upcoming Intel CPUs allowing up to 128 PB of virtual address space
and 4 PB of physical RAM space - a 512-fold increase over the old
limits. (Supercomputers of the future forecasting hurricanes on an
ever warming planet can certainly make good use of more RAM.)
Many of the necessary changes went upstream in previous cycles,
v4.14 is the first kernel that can enable 5-level paging.
This feature is activated via CONFIG_X86_5LEVEL=y - disabled by
default.
(By Kirill A. Shutemov)
- Add 'encrypted memory' support, which is a new hardware feature on
upcoming AMD CPUs ('Secure Memory Encryption', SME) allowing system
RAM to be encrypted and decrypted (mostly) transparently by the
CPU, with a little help from the kernel to transition to/from
encrypted RAM. Such RAM should be more secure against various
attacks like RAM access via the memory bus and should make the
radio signature of memory bus traffic harder to intercept (and
decrypt) as well.
This feature is activated via CONFIG_AMD_MEM_ENCRYPT=y - disabled
by default.
(By Tom Lendacky)
- Enable PCID optimized TLB flushing on newer Intel CPUs: PCID is a
hardware feature that attaches an address space tag to TLB entries
and thus allows to skip TLB flushing in many cases, even if we
switch mm's.
(By Andy Lutomirski)
All three of these features were in the works for a long time, and
it's coincidence of the three independent development paths that they
are all enabled in v4.14 at once"
* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (65 commits)
x86/mm: Enable RCU based page table freeing (CONFIG_HAVE_RCU_TABLE_FREE=y)
x86/mm: Use pr_cont() in dump_pagetable()
x86/mm: Fix SME encryption stack ptr handling
kvm/x86: Avoid clearing the C-bit in rsvd_bits()
x86/CPU: Align CR3 defines
x86/mm, mm/hwpoison: Clear PRESENT bit for kernel 1:1 mappings of poison pages
acpi, x86/mm: Remove encryption mask from ACPI page protection type
x86/mm, kexec: Fix memory corruption with SME on successive kexecs
x86/mm/pkeys: Fix typo in Documentation/x86/protection-keys.txt
x86/mm/dump_pagetables: Speed up page tables dump for CONFIG_KASAN=y
x86/mm: Implement PCID based optimization: try to preserve old TLB entries using PCID
x86: Enable 5-level paging support via CONFIG_X86_5LEVEL=y
x86/mm: Allow userspace have mappings above 47-bit
x86/mm: Prepare to expose larger address space to userspace
x86/mpx: Do not allow MPX if we have mappings above 47-bit
x86/mm: Rename tasksize_32bit/64bit to task_size_32bit/64bit()
x86/xen: Redefine XEN_ELFNOTE_INIT_P2M using PUD_SIZE * PTRS_PER_PUD
x86/mm/dump_pagetables: Fix printout of p4d level
x86/mm/dump_pagetables: Generalize address normalization
x86/boot: Fix memremap() related build failure
...
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Linus Torvalds
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b0c79f49c3 |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 asm updates from Ingo Molnar: - Introduce the ORC unwinder, which can be enabled via CONFIG_ORC_UNWINDER=y. The ORC unwinder is a lightweight, Linux kernel specific debuginfo implementation, which aims to be DWARF done right for unwinding. Objtool is used to generate the ORC unwinder tables during build, so the data format is flexible and kernel internal: there's no dependency on debuginfo created by an external toolchain. The ORC unwinder is almost two orders of magnitude faster than the (out of tree) DWARF unwinder - which is important for perf call graph profiling. It is also significantly simpler and is coded defensively: there has not been a single ORC related kernel crash so far, even with early versions. (knock on wood!) But the main advantage is that enabling the ORC unwinder allows CONFIG_FRAME_POINTERS to be turned off - which speeds up the kernel measurably: With frame pointers disabled, GCC does not have to add frame pointer instrumentation code to every function in the kernel. The kernel's .text size decreases by about 3.2%, resulting in better cache utilization and fewer instructions executed, resulting in a broad kernel-wide speedup. Average speedup of system calls should be roughly in the 1-3% range - measurements by Mel Gorman [1] have shown a speedup of 5-10% for some function execution intense workloads. The main cost of the unwinder is that the unwinder data has to be stored in RAM: the memory cost is 2-4MB of RAM, depending on kernel config - which is a modest cost on modern x86 systems. Given how young the ORC unwinder code is it's not enabled by default - but given the performance advantages the plan is to eventually make it the default unwinder on x86. See Documentation/x86/orc-unwinder.txt for more details. - Remove lguest support: its intended role was that of a temporary proof of concept for virtualization, plus its removal will enable the reduction (removal) of the paravirt API as well, so Rusty agreed to its removal. (Juergen Gross) - Clean up and fix FSGS related functionality (Andy Lutomirski) - Clean up IO access APIs (Andy Shevchenko) - Enhance the symbol namespace (Jiri Slaby) * 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits) objtool: Handle GCC stack pointer adjustment bug x86/entry/64: Use ENTRY() instead of ALIGN+GLOBAL for stub32_clone() x86/fpu/math-emu: Add ENDPROC to functions x86/boot/64: Extract efi_pe_entry() from startup_64() x86/boot/32: Extract efi_pe_entry() from startup_32() x86/lguest: Remove lguest support x86/paravirt/xen: Remove xen_patch() objtool: Fix objtool fallthrough detection with function padding x86/xen/64: Fix the reported SS and CS in SYSCALL objtool: Track DRAP separately from callee-saved registers objtool: Fix validate_branch() return codes x86: Clarify/fix no-op barriers for text_poke_bp() x86/switch_to/64: Rewrite FS/GS switching yet again to fix AMD CPUs selftests/x86/fsgsbase: Test selectors 1, 2, and 3 x86/fsgsbase/64: Report FSBASE and GSBASE correctly in core dumps x86/fsgsbase/64: Fully initialize FS and GS state in start_thread_common x86/asm: Fix UNWIND_HINT_REGS macro for older binutils x86/asm/32: Fix regs_get_register() on segment registers x86/xen/64: Rearrange the SYSCALL entries x86/asm/32: Remove a bunch of '& 0xffff' from pt_regs segment reads ... |
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Joe Stringer
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c03567a8e8 |
include/linux/compiler.h: don't perform compiletime_assert with -O0
Commit |
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Ingo Molnar
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413d63d71b |
Merge branch 'linus' into x86/mm to pick up fixes and to fix conflicts
Conflicts: arch/x86/kernel/head64.c arch/x86/mm/mmap.c Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Ingo Molnar
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1d0f49e140 |
Merge branch 'x86/urgent' into x86/asm, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Josh Poimboeuf
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649ea4d5a6 |
objtool: Assume unannotated UD2 instructions are dead ends
Arnd reported some false positive warnings with GCC 7: drivers/hid/wacom_wac.o: warning: objtool: wacom_bpt3_touch()+0x2a5: stack state mismatch: cfa1=7+8 cfa2=6+16 drivers/iio/adc/vf610_adc.o: warning: objtool: vf610_adc_calculate_rates() falls through to next function vf610_adc_sample_set() drivers/pwm/pwm-hibvt.o: warning: objtool: hibvt_pwm_get_state() falls through to next function hibvt_pwm_remove() drivers/pwm/pwm-mediatek.o: warning: objtool: mtk_pwm_config() falls through to next function mtk_pwm_enable() drivers/spi/spi-bcm2835.o: warning: objtool: .text: unexpected end of section drivers/spi/spi-bcm2835aux.o: warning: objtool: .text: unexpected end of section drivers/watchdog/digicolor_wdt.o: warning: objtool: dc_wdt_get_timeleft() falls through to next function dc_wdt_restart() When GCC 7 detects a potential divide-by-zero condition, it sometimes inserts a UD2 instruction for the case where the divisor is zero, instead of letting the hardware trap on the divide instruction. Objtool doesn't consider UD2 to be fatal unless it's annotated with unreachable(). So it considers the GCC-generated UD2 to be non-fatal, and it tries to follow the control flow past the UD2 and gets confused. Previously, objtool *did* assume UD2 was always a dead end. That changed with the following commit: |
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Kees Cook
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aa5d1b8150 |
x86/asm: Add ASM_UNREACHABLE
This creates an unreachable annotation in asm for CONFIG_STACK_VALIDATION=y. While here, adjust earlier uses of \t\n into \n\t. Suggested-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Christoph Hellwig <hch@infradead.org> Cc: David S. Miller <davem@davemloft.net> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Elena Reshetova <elena.reshetova@intel.com> Cc: Eric Biggers <ebiggers3@gmail.com> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Greg KH <gregkh@linuxfoundation.org> Cc: Hans Liljestrand <ishkamiel@gmail.com> Cc: James Bottomley <James.Bottomley@hansenpartnership.com> Cc: Jann Horn <jannh@google.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Manfred Spraul <manfred@colorfullife.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Serge E. Hallyn <serge@hallyn.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: arozansk@redhat.com Cc: axboe@kernel.dk Cc: kernel-hardening@lists.openwall.com Cc: linux-arch <linux-arch@vger.kernel.org> Link: http://lkml.kernel.org/r/1500921349-10803-3-git-send-email-keescook@chromium.org Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
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e06fdaf40a |
Merge tag 'gcc-plugins-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull structure randomization updates from Kees Cook:
"Now that IPC and other changes have landed, enable manual markings for
randstruct plugin, including the task_struct.
This is the rest of what was staged in -next for the gcc-plugins, and
comes in three patches, largest first:
- mark "easy" structs with __randomize_layout
- mark task_struct with an optional anonymous struct to isolate the
__randomize_layout section
- mark structs to opt _out_ of automated marking (which will come
later)
And, FWIW, this continues to pass allmodconfig (normal and patched to
enable gcc-plugins) builds of x86_64, i386, arm64, arm, powerpc, and
s390 for me"
* tag 'gcc-plugins-v4.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
randstruct: opt-out externally exposed function pointer structs
task_struct: Allow randomized layout
randstruct: Mark various structs for randomization
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Tom Lendacky
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7375ae3a0b |
compiler-gcc.h: Introduce __nostackprotector function attribute
Create a new function attribute, __nostackprotector, that can used to turn off stack protection on a per function basis. Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alexander Potapenko <glider@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: Dave Young <dyoung@redhat.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Toshimitsu Kani <toshi.kani@hpe.com> Cc: kasan-dev@googlegroups.com Cc: kvm@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-doc@vger.kernel.org Cc: linux-efi@vger.kernel.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/0576fd5c74440ad0250f16ac6609ecf587812456.1500319216.git.thomas.lendacky@amd.com Signed-off-by: Ingo Molnar <mingo@kernel.org> |
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Linus Torvalds
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59005b0c59 |
Merge tag 'gcc-plugins-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull GCC plugin updates from Kees Cook: "The big part is the randstruct plugin infrastructure. This is the first of two expected pull requests for randstruct since there are dependencies in other trees that would be easier to merge once those have landed. Notably, the IPC allocation refactoring in -mm, and many trivial merge conflicts across several trees when applying the __randomize_layout annotation. As a result, it seemed like I should send this now since it is relatively self-contained, and once the rest of the trees have landed, send the annotation patches. I'm expecting the final phase of randstruct (automatic struct selection) will land for v4.14, but if its other tree dependencies actually make it for v4.13, I can send that merge request too. Summary: - typo fix in Kconfig (Jean Delvare) - randstruct infrastructure" * tag 'gcc-plugins-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: ARM: Prepare for randomized task_struct randstruct: Whitelist NIU struct page overloading randstruct: Whitelist big_key path struct overloading randstruct: Whitelist UNIXCB cast randstruct: Whitelist struct security_hook_heads cast gcc-plugins: Add the randstruct plugin Fix English in description of GCC_PLUGIN_STRUCTLEAK compiler: Add __designated_init annotation gcc-plugins: Detail c-common.h location for GCC 4.6 |
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Kees Cook
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29e48ce87f |
task_struct: Allow randomized layout
This marks most of the layout of task_struct as randomizable, but leaves thread_info and scheduler state untouched at the start, and thread_struct untouched at the end. Other parts of the kernel use unnamed structures, but the 0-day builder using gcc-4.4 blows up on static initializers. Officially, it's documented as only working on gcc 4.6 and later, which further confuses me: https://gcc.gnu.org/wiki/C11Status The structure layout randomization already requires gcc 4.7, but instead of depending on the plugin being enabled, just check the gcc versions for wider build testing. At Linus's suggestion, the marking is hidden in a macro to reduce how ugly it looks. Additionally, indenting is left unchanged since it would make things harder to read. Randomization of task_struct is modified from Brad Spengler/PaX Team's code in the last public patch of grsecurity/PaX based on my understanding of the code. Changes or omissions from the original code are mine and don't reflect the original grsecurity/PaX code. Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Kees Cook <keescook@chromium.org> |
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Kees Cook
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313dd1b629 |
gcc-plugins: Add the randstruct plugin
This randstruct plugin is modified from Brad Spengler/PaX Team's code in the last public patch of grsecurity/PaX based on my understanding of the code. Changes or omissions from the original code are mine and don't reflect the original grsecurity/PaX code. The randstruct GCC plugin randomizes the layout of selected structures at compile time, as a probabilistic defense against attacks that need to know the layout of structures within the kernel. This is most useful for "in-house" kernel builds where neither the randomization seed nor other build artifacts are made available to an attacker. While less useful for distribution kernels (where the randomization seed must be exposed for third party kernel module builds), it still has some value there since now all kernel builds would need to be tracked by an attacker. In more performance sensitive scenarios, GCC_PLUGIN_RANDSTRUCT_PERFORMANCE can be selected to make a best effort to restrict randomization to cacheline-sized groups of elements, and will not randomize bitfields. This comes at the cost of reduced randomization. Two annotations are defined,__randomize_layout and __no_randomize_layout, which respectively tell the plugin to either randomize or not to randomize instances of the struct in question. Follow-on patches enable the auto-detection logic for selecting structures for randomization that contain only function pointers. It is disabled here to assist with bisection. Since any randomized structs must be initialized using designated initializers, __randomize_layout includes the __designated_init annotation even when the plugin is disabled so that all builds will require the needed initialization. (With the plugin enabled, annotations for automatically chosen structures are marked as well.) The main differences between this implemenation and grsecurity are: - disable automatic struct selection (to be enabled in follow-up patch) - add designated_init attribute at runtime and for manual marking - clarify debugging output to differentiate bad cast warnings - add whitelisting infrastructure - support gcc 7's DECL_ALIGN and DECL_MODE changes (Laura Abbott) - raise minimum required GCC version to 4.7 Earlier versions of this patch series were ported by Michael Leibowitz. Signed-off-by: Kees Cook <keescook@chromium.org> |
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Paul E. McKenney
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41a2901e7d |
rcu: Remove SPARSE_RCU_POINTER Kconfig option
The sparse-based checking for non-RCU accesses to RCU-protected pointers has been around for a very long time, and it is now the only type of sparse-based checking that is optional. This commit therefore makes it unconditional. Reported-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Fengguang Wu <fengguang.wu@intel.com> |
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Kees Cook
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0aa5e49c68 |
compiler: Add __designated_init annotation
This allows structure annotations for requiring designated initialization in GCC 5.1.0 and later: https://gcc.gnu.org/onlinedocs/gcc/Designated-Inits.html The structure randomization layout plugin will be using this to help identify structures that need this form of initialization. Signed-off-by: Kees Cook <keescook@chromium.org> |
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Linus Torvalds
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86292b33d4 |
Merge branch 'akpm' (patches from Andrew)
Merge yet more updates from Andrew Morton: - a few MM remainders - misc things - autofs updates - signals - affs updates - ipc - nilfs2 - spelling.txt updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits) mm, x86: fix HIGHMEM64 && PARAVIRT build config for native_pud_clear() mm: add arch-independent testcases for RODATA hfs: atomically read inode size mm: clarify mm_struct.mm_{users,count} documentation mm: use mmget_not_zero() helper mm: add new mmget() helper mm: add new mmgrab() helper checkpatch: warn when formats use %Z and suggest %z lib/vsprintf.c: remove %Z support scripts/spelling.txt: add some typo-words scripts/spelling.txt: add "followings" pattern and fix typo instances scripts/spelling.txt: add "therfore" pattern and fix typo instances scripts/spelling.txt: add "overwriten" pattern and fix typo instances scripts/spelling.txt: add "overwritting" pattern and fix typo instances scripts/spelling.txt: add "deintialize(d)" pattern and fix typo instances scripts/spelling.txt: add "disassocation" pattern and fix typo instances scripts/spelling.txt: add "omited" pattern and fix typo instances scripts/spelling.txt: add "explictely" pattern and fix typo instances scripts/spelling.txt: add "applys" pattern and fix typo instances scripts/spelling.txt: add "configuartion" pattern and fix typo instances ... |
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Luis R. Rodriguez
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7d134b2ce6 |
kprobes: move kprobe declarations to asm-generic/kprobes.h
Often all is needed is these small helpers, instead of compiler.h or a full kprobes.h. This is important for asm helpers, in fact even some asm/kprobes.h make use of these helpers... instead just keep a generic asm file with helpers useful for asm code with the least amount of clutter as possible. Likewise we need now to also address what to do about this file for both when architectures have CONFIG_HAVE_KPROBES, and when they do not. Then for when architectures have CONFIG_HAVE_KPROBES but have disabled CONFIG_KPROBES. Right now most asm/kprobes.h do not have guards against CONFIG_KPROBES, this means most architecture code cannot include asm/kprobes.h safely. Correct this and add guards for architectures missing them. Additionally provide architectures that not have kprobes support with the default asm-generic solution. This lets us force asm/kprobes.h on the header include/linux/kprobes.h always, but most importantly we can now safely include just asm/kprobes.h on architecture code without bringing the full kitchen sink of header files. Two architectures already provided a guard against CONFIG_KPROBES on its kprobes.h: sh, arch. The rest of the architectures needed gaurds added. We avoid including any not-needed headers on asm/kprobes.h unless kprobes have been enabled. In a subsequent atomic change we can try now to remove compiler.h from include/linux/kprobes.h. During this sweep I've also identified a few architectures defining a common macro needed for both kprobes and ftrace, that of the definition of the breakput instruction up. Some refer to this as BREAKPOINT_INSTRUCTION. This must be kept outside of the #ifdef CONFIG_KPROBES guard. [mcgrof@kernel.org: fix arm64 build] Link: http://lkml.kernel.org/r/CAB=NE6X1WMByuARS4mZ1g9+W=LuVBnMDnh_5zyN0CLADaVh=Jw@mail.gmail.com [sfr@canb.auug.org.au: fixup for kprobes declarations moving] Link: http://lkml.kernel.org/r/20170214165933.13ebd4f4@canb.auug.org.au Link: http://lkml.kernel.org/r/20170203233139.32682-1-mcgrof@kernel.org Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David S. Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linus Torvalds
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79b17ea740 |
Merge tag 'trace-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"This release has no new tracing features, just clean ups, minor fixes
and small optimizations"
* tag 'trace-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (25 commits)
tracing: Remove outdated ring buffer comment
tracing/probes: Fix a warning message to show correct maximum length
tracing: Fix return value check in trace_benchmark_reg()
tracing: Use modern function declaration
jump_label: Reduce the size of struct static_key
tracing/probe: Show subsystem name in messages
tracing/hwlat: Update old comment about migration
timers: Make flags output in the timer_start tracepoint useful
tracing: Have traceprobe_probes_write() not access userspace unnecessarily
tracing: Have COMM event filter key be treated as a string
ftrace: Have set_graph_function handle multiple functions in one write
ftrace: Do not hold references of ftrace_graph_{notrace_}hash out of graph_lock
tracing: Reset parser->buffer to allow multiple "puts"
ftrace: Have set_graph_functions handle write with RDWR
ftrace: Reset fgd->hash in ftrace_graph_write()
ftrace: Replace (void *)1 with a meaningful macro name FTRACE_GRAPH_EMPTY
ftrace: Create a slight optimization on searching the ftrace_hash
tracing: Add ftrace_hash_key() helper function
ftrace: Convert graph filter to use hash tables
ftrace: Expose ftrace_hash_empty and ftrace_lookup_ip
...
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Steven Rostedt (VMware)
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134e6a034c |
tracing: Show number of constants profiled in likely profiler
Now that constants are traced, it is useful to see the number of constants that are traced in the likely/unlikely profiler in order to know if they should be ignored or not. The likely/unlikely will display a number after the "correct" number if a "constant" count exists. Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> |