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liuyuntao 255c569eeb virtio-gpu: fix possible memory allocation failure

[ Upstream commit 5bd4f20de8 ]

When kmem_cache_zalloc in virtio_gpu_get_vbuf fails, it will return
an error code. But none of its callers checks this error code, and
a core dump will take place.

Considering many of its callers can't handle such error, I add
a __GFP_NOFAIL flag when calling kmem_cache_zalloc to make sure
it won't fail, and delete those unused error handlings.

Fixes: dc5698e80c ("Add virtio gpu driver.")
Signed-off-by: Yuntao Liu <liuyuntao10@huawei.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20210828104321.3410312-1-liuyuntao10@huawei.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-11-18 19:16:23 +01:00

Kconfig

drivers: gpu: drm: virtio: fix dependency of DRM_VIRTIO_GPU on VIRTIO

2020-12-22 13:43:29 +01:00

Makefile

…

virtgpu_debugfs.c

drm/virtio: virtio_{blah} --> virtio_gpu_{blah}

2020-12-02 11:48:14 +01:00

virtgpu_display.c

drm: Use state helper instead of CRTC state pointer

2020-11-10 12:41:06 +01:00