Messages in this thread | | | Date | Mon, 25 Jul 2011 09:42:26 -0400 | From | Dave Jones <> | Subject | Re: DEBUG_LOCKS_WARN_ON() within lockdep trace_hardirqs_on_caller() |
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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
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