From: Liviu Dudau liviu.dudau@arm.com
stable inclusion from stable-v5.10.121 commit c977d63b8cc45a1ca4ce438c072af43af6f4aa6b category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6CQ
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit c8f76c37cc3668ee45e081e76a15f24a352ebbdd ]
If drm_universal_plane_init() fails early we jump to the common cleanup code that calls komeda_plane_destroy() which in turn could access the uninitalised drm_plane and crash. Return early if an error is detected without going through the common code.
Reported-by: Steven Price steven.price@arm.com Reviewed-by: Steven Price steven.price@arm.com Signed-off-by: Liviu Dudau liviu.dudau@arm.com Link: https://lore.kernel.org/dri-devel/20211203100946.2706922-1-liviu.dudau@arm.c... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Acked-by: Xie XiuQi xiexiuqi@huawei.com --- drivers/gpu/drm/arm/display/komeda/komeda_plane.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c index 98e915e325dd..a5f57b38d193 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c @@ -274,8 +274,10 @@ static int komeda_plane_add(struct komeda_kms_dev *kms,
komeda_put_fourcc_list(formats);
- if (err) - goto cleanup; + if (err) { + kfree(kplane); + return err; + }
drm_plane_helper_add(plane, &komeda_plane_helper_funcs);