drm/msm: Fix NULL pointer dereference in crashstate_get_vm_logs()

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[ Upstream commit 3099e0247e ]

crashstate_get_vm_logs() did not check the return value of
kmalloc_array(). In low-memory situations, kmalloc_array() may return
NULL, leading to a NULL pointer dereference when the function later
accesses state->vm_logs.

Fix this by checking the return value of kmalloc_array() and setting
state->nr_vm_logs to 0 if allocation fails.

Fixes: 9edc52967c ("drm/msm: Add VM logging for VM_BIND updates")
Signed-off-by: Huiwen He <hehuiwen@kylinos.cn>
Patchwork: https://patchwork.freedesktop.org/patch/687555/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Huiwen He 2025-11-13 01:04:11 +08:00 • committed by Greg Kroah-Hartman

parent d36f07b8e5

commit 0bc9149da2

1 changed files with 4 additions and 0 deletions

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drivers/gpu/drm/msm/msm_gpu.c

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