Merge 4.19.176 into android-4.19-stable

Changes in 4.19.176
	tracing/kprobe: Fix to support kretprobe events on unloaded modules
	block: fix NULL pointer dereference in register_disk
	fgraph: Initialize tracing_graph_pause at task creation
	remoteproc: qcom_q6v5_mss: Validate modem blob firmware size before load
	remoteproc: qcom_q6v5_mss: Validate MBA firmware size before load
	af_key: relax availability checks for skb size calculation
	regulator: core: avoid regulator_resolve_supply() race condition
	chtls: Fix potential resource leak
	pNFS/NFSv4: Try to return invalid layout in pnfs_layout_process()
	iwlwifi: mvm: take mutex for calling iwl_mvm_get_sync_time()
	iwlwifi: pcie: add a NULL check in iwl_pcie_txq_unmap
	iwlwifi: pcie: fix context info memory leak
	iwlwifi: mvm: guard against device removal in reprobe
	SUNRPC: Move simple_get_bytes and simple_get_netobj into private header
	SUNRPC: Handle 0 length opaque XDR object data properly
	lib/string: Add strscpy_pad() function
	include/trace/events/writeback.h: fix -Wstringop-truncation warnings
	memcg: fix a crash in wb_workfn when a device disappears
	Fix unsynchronized access to sev members through svm_register_enc_region
	block: don't hold q->sysfs_lock in elevator_init_mq
	blk-mq: don't hold q->sysfs_lock in blk_mq_map_swqueue
	squashfs: add more sanity checks in id lookup
	squashfs: add more sanity checks in inode lookup
	squashfs: add more sanity checks in xattr id lookup
	regulator: core: enable power when setting up constraints
	regulator: core: Clean enabling always-on regulators + their supplies
	regulator: Fix lockdep warning resolving supplies
	Linux 4.19.176

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I33c221717e4e5c3213a7a21a648933a013bb2753

init/init_task.c

@@ -170,7 +170,8 @@ struct task_struct init_task
 	.lockdep_recursion = 0,
 #endif
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
-	.ret_stack	= NULL,
+	.ret_stack		= NULL,
+	.tracing_graph_pause	= ATOMIC_INIT(0),
 #endif
 #if defined(CONFIG_TRACING) && defined(CONFIG_PREEMPT)
 	.trace_recursion = 0,