Messages in this thread Patch in this message | | | From | Hillf Danton <> | Subject | Re: [syzbot] [dri?] KASAN: slab-use-after-free Read in drm_atomic_helper_wait_for_vblanks (2) | Date | Wed, 14 Feb 2024 19:18:55 +0800 |
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On Tue, 13 Feb 2024 06:08:15 -0800 > HEAD commit: c664e16bb1ba Merge tag 'docs-6.8-fixes2' of git://git.lwn... > git tree: upstream > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11fcdba2180000
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
--- x/drivers/gpu/drm/drm_atomic_helper.c +++ y/drivers/gpu/drm/drm_atomic_helper.c @@ -1849,7 +1849,11 @@ static void commit_work(struct work_stru struct drm_atomic_state *state = container_of(work, struct drm_atomic_state, commit_work); + struct drm_device *dev = state->dev; + + mutex_lock(&dev->master_mutex); commit_tail(state); + mutex_unlock(&dev->master_mutex); } /** --
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