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| author | Pan Bian <bianpan2016@163.com> | 2019-02-01 14:21:26 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-02-01 15:46:24 -0800 |
| commit | 63ce5f552beb9bdb41546b3a26c4374758b21815 (patch) | |
| tree | 318f69dfe1f4e61e6f5fc4d5c634389f1167289e /crypto/michael_mic.c | |
| parent | c27d82f52f75fc9d8d9d40d120d2a96fdeeada5e (diff) | |
| download | lwn-63ce5f552beb9bdb41546b3a26c4374758b21815.tar.gz lwn-63ce5f552beb9bdb41546b3a26c4374758b21815.zip | |
autofs: drop dentry reference only when it is never used
autofs_expire_run() calls dput(dentry) to drop the reference count of
dentry. However, dentry is read via autofs_dentry_ino(dentry) after
that. This may result in a use-free-bug. The patch drops the reference
count of dentry only when it is never used.
Link: http://lkml.kernel.org/r/154725122396.11260.16053424107144453867.stgit@pluto-themaw-net
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'crypto/michael_mic.c')
0 files changed, 0 insertions, 0 deletions