diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2007-09-25 15:56:00 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-10-10 10:50:16 -0700 |
| commit | 2c0cf342f6fc11e6de814464c035a37d8c17fb17 (patch) | |
| tree | 33746e8e9a778444ba51a0ab8991da69db860c47 /security/selinux/hooks.c | |
| parent | b73222fc44b587f1dbf08e3c47370735ef0e67f7 (diff) | |
NLM: Fix a circular lock dependency in lockd
commit 255129d1e9ca0ed3d69d5517fae3e03d7ab4b806 in upstream.
The problem is that the garbage collector for the 'host' structures
nlm_gc_hosts(), holds nlm_host_mutex while calling down to
nlmsvc_mark_resources, which, eventually takes the file->f_mutex.
We cannot therefore call nlmsvc_lookup_host() from within
nlmsvc_create_block, since the caller will already hold file->f_mutex, so
the attempt to grab nlm_host_mutex may deadlock.
Fix the problem by calling nlmsvc_lookup_host() outside the file->f_mutex.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'security/selinux/hooks.c')
0 files changed, 0 insertions, 0 deletions