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| author | Akhil P Oommen <akhilpo@codeaurora.org> | 2021-11-18 13:20:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-12-17 12:30:14 +0300 |
| commit | f6db3d98f876870c35e96693cfd54752f6199e59 (patch) | |
| tree | b4be5d0d0afd788a788dfec26373ba6c257b417b | |
| parent | 9cbb957441ed8873577d7d313a3d79d69f1dad5c (diff) | |
| download | linux-f6db3d98f876870c35e96693cfd54752f6199e59.tar.xz | |
drm/msm: Fix null ptr access msm_ioctl_gem_submit()
[ Upstream commit 26d776fd0f79f093a5d0ce1a4c7c7a992bc3264c ]
Fix the below null pointer dereference in msm_ioctl_gem_submit():
26545.260705: Call trace:
26545.263223: kref_put+0x1c/0x60
26545.266452: msm_ioctl_gem_submit+0x254/0x744
26545.270937: drm_ioctl_kernel+0xa8/0x124
26545.274976: drm_ioctl+0x21c/0x33c
26545.278478: drm_compat_ioctl+0xdc/0xf0
26545.282428: __arm64_compat_sys_ioctl+0xc8/0x100
26545.287169: el0_svc_common+0xf8/0x250
26545.291025: do_el0_svc_compat+0x28/0x54
26545.295066: el0_svc_compat+0x10/0x1c
26545.298838: el0_sync_compat_handler+0xa8/0xcc
26545.303403: el0_sync_compat+0x188/0x1c0
26545.307445: Code: d503201f d503201f 52800028 4b0803e8 (b8680008)
26545.318799: Kernel panic - not syncing: Oops: Fatal exception
Signed-off-by: Akhil P Oommen <akhilpo@codeaurora.org>
Link: https://lore.kernel.org/r/20211118154903.2.I3ae019673a0cc45d83a193a7858748dd03dbb820@changeid
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem_submit.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index a38f23be497d..d9aef97eb93a 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -780,6 +780,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, args->nr_cmds); if (IS_ERR(submit)) { ret = PTR_ERR(submit); + submit = NULL; goto out_unlock; } |