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(parent: 3711d86) | patch
autofs4: close the races around autofs4_notify_daemon()
authorAl Viro <viro@zeniv.linux.org.uk>
Sat, 14 Sep 2013 21:32:12 +0000 (17:32 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Mon, 16 Sep 2013 23:16:38 +0000 (19:16 -0400)
commit606035e76e79b14bf7a7c219140c045a952cc76e
tree43958ffa5278f8ba9d1d6a8884087b196952e94atree | snapshot
parent3711d86a2de17e967b576af8b8a1e9351a7d1466commit | diff
autofs4: close the races around autofs4_notify_daemon()

Don't drop ->wq_mutex before calling autofs4_notify_daemon() only to regain it
there.  Besides being pointless, that opens a race window where autofs4_wait_release()
could've come and freed wq->name.name.  And do the debugging printk in the "reused an
existing wq" case before dropping ->wq_mutex - the same reason...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Ian Kent <raven@themaw.net>
fs/autofs4/waitq.c diff | blob | history
Domain: System / Uncategorized;