From: Sasha Levin <sasha.levin@oracle.com>
To: Jan Kara <jack@suse.cz>
Cc: Al Viro <viro@ZenIV.linux.org.uk>,
linux-fsdevel@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: fs: gpf in simple_setattr
Date: Mon, 24 Mar 2014 20:44:14 -0400 [thread overview]
Message-ID: <5330D15E.2000702@oracle.com> (raw)
In-Reply-To: <20140324214851.GB10057@quack.suse.cz>
On 03/24/2014 05:48 PM, Jan Kara wrote:
>> >[ 339.948946] ** 4194304 ffff8805ac03ba38 [eventpoll] ffff8806ec051fe0
>> >[eventpoll] ffffffff84666040 ffff88056c73e7b0 (null)
> OK, great. So finally we have something useful. We know we have problems
> with [eventpoll] dentry. That is actually a special filesystem not mounted
> anywhere - likely you get to that dentry through/proc/<pid>/fd/. Now
> eventpoll is interesting because it uses single anon inode for all
> eventpoll instances. And that inode should stay in place as long as
> eventpoll filesystem exists. So it's not clear how come that inode is
> freed. The basic check of handling of inode use count didn't find anything
> suspicious. But I can check in more detail and if I fail, we now have a
> pretty narrow area where to look...
Seems like it's not specific to eventpoll, I saw the same error message with
"eventfd" and "perf_event".
Thanks,
Sasha
next prev parent reply other threads:[~2014-03-25 0:44 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-19 0:25 fs: gpf in simple_setattr Sasha Levin
2014-01-08 16:00 ` Sasha Levin
2014-03-01 20:05 ` Sasha Levin
2014-03-02 3:35 ` Linus Torvalds
2014-03-03 2:01 ` Sasha Levin
2014-03-03 21:40 ` Jan Kara
2014-03-05 0:00 ` Sasha Levin
2014-03-05 12:45 ` Jan Kara
2014-03-06 16:02 ` Sasha Levin
2014-03-08 2:14 ` Sasha Levin
2014-03-10 10:43 ` Jan Kara
2014-03-10 14:13 ` Sasha Levin
2014-03-24 14:42 ` Sasha Levin
2014-03-24 21:48 ` Jan Kara
2014-03-25 0:44 ` Sasha Levin [this message]
2014-03-25 17:33 ` Jan Kara
2014-03-25 17:51 ` Sasha Levin
2014-03-25 21:12 ` Jan Kara
2014-03-26 0:12 ` Sasha Levin
2014-03-26 0:41 ` Linus Torvalds
2014-03-26 5:34 ` Jan Kara
2014-03-26 5:53 ` Dave Jones
2014-03-26 15:00 ` Sasha Levin
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