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msm: npu: Fix use after free issue

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There is possibility that network will be used after free.
This change is to fix this issue.

Change-Id: I39aa81ddc4a7d1801b2f7157aa21f0051ff2d5a5
Signed-off-by: Gao Wang <quic_gaowang@quicinc.com>
(cherry picked from commit c29b693900)
This commit is contained in:
Gao Wang
2024-12-23 02:22:07 -08:00
committed by Sumangala P
parent 7e18e8cad5
commit b9426ee620
2 changed files with 18 additions and 0 deletions
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16
drivers/media/platform/msm/npu/npu_mgr.c
View File

@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2018-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
*/
/* -------------------------------------------------------------------------
@@ -2544,6 +2545,13 @@ int32_t npu_host_unload_network(struct npu_client *client,
return -EINVAL;
}
if (network->is_executing) {
pr_err("network is in execution\n");
network_put(network);
mutex_unlock(&host_ctx->lock);
return -EINVAL;
}
if (network->fw_error) {
NPU_ERR("fw in error state, skip unload network in fw\n");
goto free_network;
@@ -2707,6 +2715,12 @@ int32_t npu_host_exec_network_v2(struct npu_client *client,
goto exec_v2_done;
}
if (network->is_executing) {
pr_err("network is already in execution\n");
ret = -EINVAL;
goto exec_v2_done;
}
if (host_ctx->dev_shuttingdown) {
NPU_ERR("device is shutting down\n");
ret = -EIO;
@@ -2724,6 +2738,7 @@ int32_t npu_host_exec_network_v2(struct npu_client *client,
goto exec_v2_done;
}
network->is_executing = true;
for (i = 0; i < num_patch_params; i++) {
exec_packet->patch_params[i].id = patch_buf_info[i].buf_id;
NPU_DBG("%d: patch_id: %x\n", i,
@@ -2833,6 +2848,7 @@ int32_t npu_host_exec_network_v2(struct npu_client *client,
npu_free_network_cmd(host_ctx, exec_cmd);
free_exec_packet:
kfree(exec_packet);
network->is_executing = false;
exec_v2_done:
network_put(network);
mutex_unlock(&host_ctx->lock);

2
drivers/media/platform/msm/npu/npu_mgr.h
View File

@@ -1,6 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2017-2021, The Linux Foundation. All rights reserved.
* Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
*/
#ifndef _NPU_MGR_H
@@ -85,6 +86,7 @@ struct npu_network {
bool is_valid;
bool is_active;
bool is_unloading;
bool is_executing;
bool fw_error;
struct npu_client *client;
struct list_head cmd_list;