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| author | Jiasheng Jiang <jiasheng@iscas.ac.cn> | 2022-12-12 17:11:17 +0800 |
|---|---|---|
| committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-01-18 03:07:07 +0200 |
| commit | d839f0811a31322c087a859c2b181e2383daa7be (patch) | |
| tree | a88f95238d889eef7307a46fa3989dfd57f78ee4 /drivers/gpu/drm/msm/msm_gem_submit.c | |
| parent | d26407788cc0cf641d760363038ddc22efcf0a33 (diff) | |
| download | linux-d839f0811a31322c087a859c2b181e2383daa7be.tar.gz linux-d839f0811a31322c087a859c2b181e2383daa7be.tar.bz2 linux-d839f0811a31322c087a859c2b181e2383daa7be.zip | |
drm/msm/gem: Add check for kmalloc
Add the check for the return value of kmalloc in order to avoid
NULL pointer dereference in copy_from_user.
Fixes: 20224d715a88 ("drm/msm/submit: Move copy_from_user ahead of locking bos")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/514678/
Link: https://lore.kernel.org/r/20221212091117.43511-1-jiasheng@iscas.ac.cn
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_gem_submit.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem_submit.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 45a3e5cadc7d..7c2cc1262c05 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -209,6 +209,10 @@ static int submit_lookup_cmds(struct msm_gem_submit *submit, goto out; } submit->cmd[i].relocs = kmalloc(sz, GFP_KERNEL); + if (!submit->cmd[i].relocs) { + ret = -ENOMEM; + goto out; + } ret = copy_from_user(submit->cmd[i].relocs, userptr, sz); if (ret) { ret = -EFAULT; |