lkml.org 
[lkml]   [2011]   [Jul]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: DEBUG_LOCKS_WARN_ON() within lockdep trace_hardirqs_on_caller()
On Mon, Jul 25, 2011 at 03:05:14PM +0300, Sergey Senozhatsky wrote:
> Hello,
>
> Current 3.1.0-git3 (03873-g2c9c838), x86_64, has triggered an DEBUG_LOCKS_WARN_ON()
> within trace_hardirqs_on_caller()
>
> [ 4364.656167] ------------[ cut here ]------------
> [ 4364.656186] WARNING: at kernel/lockdep.c:2532 trace_hardirqs_on_caller+0x6d/0x166()
> [ 4364.656191] Hardware name: Aspire 5741G
> [ 4364.656264] Pid: 26796, comm: conftest Not tainted 3.1.0-dbg-03873-g2c9c838-dirty #652
> [ 4364.656269] Call Trace:
> [ 4364.656279] [<ffffffff8103e970>] warn_slowpath_common+0x7e/0x96
> [ 4364.656289] [<ffffffff81477056>] ? __bad_area_nosemaphore+0x35/0x1b9
> [ 4364.656296] [<ffffffff8103e99d>] warn_slowpath_null+0x15/0x17
> [ 4364.656303] [<ffffffff81072770>] trace_hardirqs_on_caller+0x6d/0x166
> [ 4364.656310] [<ffffffff81072876>] trace_hardirqs_on+0xd/0xf
> [ 4364.656317] [<ffffffff81477056>] __bad_area_nosemaphore+0x35/0x1b9
> [ 4364.656324] [<ffffffff8147722f>] bad_area+0x45/0x4c
> [ 4364.656333] [<ffffffff814850f9>] do_page_fault+0x2da/0x48a
> [ 4364.656343] [<ffffffff810ec2d0>] ? do_brk+0x24e/0x2a2
> [ 4364.656352] [<ffffffff8124642d>] ? trace_hardirqs_off_thunk+0x3a/0x3c
> [ 4364.656360] [<ffffffff81482975>] page_fault+0x25/0x30
> [ 4364.656366] ---[ end trace 9870b4ffc9ea6750 ]---

I hit this a few days ago too. http://lkml.org/lkml/2011/7/23/167
It started happening as soon as the x86 merge hit Linus tree (3.0 was fine).

Dave



\
 
 \ /
  Last update: 2011-07-25 15:45    [W:0.033 / U:0.212 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site