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drm/i915: Fix error pointer dereference in i915_gem_do_execbuffer()

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Originally "out_fence" was set using out_fence = sync_file_create() but
which returns NULL, but now it is set with out_fence = eb_requests_create()
which returns error pointers.  The error path needs to be modified to
avoid an Oops in the "goto err_request;" path.

Fixes: 544460c338 ("drm/i915: Multi-BB execbuf")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211202044831.29583-1-matthew.brost@intel.com
(cherry picked from commit 8722ded49c)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Dan Carpenter 2021-12-01 20:48:31 -08:00 committed by Rodrigo Vivi
parent 0fcfb00b28
commit 9cdb54be3e
1 changed files with 1 additions and 0 deletions
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1
drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
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@ -3277,6 +3277,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
out_fence = eb_requests_create(&eb, in_fence, out_fence_fd);
if (IS_ERR(out_fence)) {
err = PTR_ERR(out_fence);
out_fence = NULL;
if (eb.requests[0])
goto err_request;
else