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Al Viro authored
[ Upstream commit d4565649 ] both do_last() and walk_component() risk picking a NULL inode out of dentry about to become positive, *then* checking its flags and seeing that it's not negative anymore and using (already stale by then) value they'd fetched earlier. Usually ends up oopsing soon after that... Cc: stable@vger.kernel.org # v3.13+ Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
Sasha Levin <sasha.levin@oracle.com>
9b77cd13
