From: Peter Zijlstra <peterz@infradead.org>
To: Al Viro <viro@ZenIV.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Dave Jones <davej@redhat.com>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: processes hung after sys_renameat, and 'missing' processes
Date: Mon, 04 Jun 2012 11:35:45 +0200 [thread overview]
Message-ID: <1338802545.28282.11.camel@twins> (raw)
In-Reply-To: <20120604002030.GT30000@ZenIV.linux.org.uk>
On Mon, 2012-06-04 at 01:20 +0100, Al Viro wrote:
>
> Another question re lockdep - does it scream loudly if process returns
> to userland without having released some lock? I hope so, but I've never
> checked that... ;-/
It does, on some archs. git grep lockdep_sys_exit, suggests x86 and
s390.
http://www.google.com/search?q=lock+held+when+returning+to+user+space
will find you people who tripped it ;-) There's a few filesystems that
did various vile things on freeze or so.
next prev parent reply other threads:[~2012-06-04 9:35 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-03 22:36 processes hung after sys_renameat, and 'missing' processes Dave Jones
2012-06-03 22:51 ` Dave Jones
2012-06-03 23:07 ` Linus Torvalds
2012-06-03 23:17 ` Al Viro
2012-06-03 23:28 ` Al Viro
2012-06-03 23:40 ` Al Viro
2012-06-03 23:59 ` Al Viro
2012-06-04 0:07 ` Dave Jones
2012-06-06 19:42 ` Dave Jones
2012-06-06 22:38 ` Linus Torvalds
2012-06-06 23:00 ` Dave Jones
2012-06-06 23:31 ` Linus Torvalds
2012-06-06 23:54 ` Al Viro
2012-06-07 0:29 ` Dave Jones
2012-06-07 0:40 ` Al Viro
2012-06-07 0:42 ` Linus Torvalds
2012-06-07 1:19 ` Dave Jones
2012-06-07 1:29 ` Al Viro
2012-06-07 1:31 ` Dave Jones
2012-06-07 1:31 ` Al Viro
2012-06-07 1:42 ` Dave Jones
2012-06-07 1:45 ` Linus Torvalds
2012-06-07 1:54 ` Al Viro
2012-06-07 2:08 ` Dave Jones
2012-06-07 19:36 ` Al Viro
2012-06-07 20:43 ` Sage Weil
2012-06-07 23:12 ` Eric W. Biederman
2012-06-07 23:39 ` Al Viro
2012-06-07 23:57 ` Linus Torvalds
2012-06-08 0:36 ` Al Viro
2012-06-08 0:42 ` Linus Torvalds
2012-06-08 0:59 ` Al Viro
2012-06-08 5:25 ` Eric W. Biederman
2012-06-08 5:48 ` Al Viro
2012-06-08 7:54 ` Eric W. Biederman
2012-06-08 20:20 ` Al Viro
2012-06-08 2:08 ` Eric W. Biederman
2012-06-08 2:37 ` Al Viro
2012-06-08 2:18 ` Al Viro
2012-06-08 16:22 ` J. Bruce Fields
2012-06-08 17:44 ` Linus Torvalds
2012-06-11 12:17 ` J. Bruce Fields
2012-06-07 1:40 ` Linus Torvalds
2012-06-07 0:35 ` Linus Torvalds
2012-06-07 10:26 ` Peter Zijlstra
2012-06-07 15:30 ` Linus Torvalds
2012-06-08 7:31 ` Peter Zijlstra
2012-06-08 14:38 ` Dave Jones
2012-06-08 14:51 ` Peter Zijlstra
2012-06-08 15:01 ` Dave Jones
2012-06-08 15:11 ` Peter Zijlstra
2012-06-08 15:21 ` Dave Jones
2012-06-08 14:46 ` J. Bruce Fields
2012-06-08 15:08 ` Peter Zijlstra
2012-06-11 12:17 ` J. Bruce Fields
2012-06-04 0:00 ` Dave Jones
2012-06-04 0:16 ` Linus Torvalds
2012-06-04 0:20 ` Al Viro
2012-06-04 9:35 ` Peter Zijlstra [this message]
2012-06-04 9:29 ` Peter Zijlstra
2012-06-04 10:49 ` Peter Zijlstra
2012-06-07 0:13 ` Dave Jones
-- strict thread matches above, loose matches on Subject: below --
2012-06-07 7:07 Miklos Szeredi
2012-06-07 15:44 ` Linus Torvalds
2012-06-11 16:02 ` Miklos Szeredi
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