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Dave Chinner authored
Resulting in a UAF if the shrinker races with some other dquot freeing mechanism that sets XFS_DQFLAG_FREEING before the dquot is removed from the LRU. This can occur if a dquot purge races with drop_caches. Reported-by: syzbot+912776840162c13db1a3@syzkaller.appspotmail.com Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
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