Messages in this thread | | | Date | Wed, 8 Aug 2012 15:17:38 +0800 | From | Fengguang Wu <> | Subject | Re: mq: INFO: possible circular locking dependency detected |
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On Tue, Aug 07, 2012 at 07:39:55AM +0100, Al Viro wrote: > On Tue, Aug 07, 2012 at 01:04:12PM +0800, Fengguang Wu wrote: > > > FYI, here is a different back trace on that commit. > > > > [ 3.255043] ====================================================== > > [ 3.255052] [ INFO: possible circular locking dependency detected ] > > [ 3.255052] 3.5.0-rc6-bisect-00355-geb04c28 #4 Not tainted > > [ 3.255052] ------------------------------------------------------- > > [ 3.255052] init/1 is trying to acquire lock: > > [ 3.255052] (&mm->mmap_sem){++++++}, at: [<ffffffff81180d00>] might_fault+0x70/0xe0 > > [ 3.255052] > > [ 3.255052] but task is already holding lock: > > [ 3.255052] (&sb->s_type->i_mutex_key){+.+.+.}, at: [<ffffffff811d191e>] vfs_readdir+0x6e/0x130 > > Do you see any similar with the _next_ commit?
Stress tests show that the next commit is free from both the "circular locking dependency" issues.
Thanks, Fengguang
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