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From: Rik van Riel <riel@redhat.com>
To: stian@nixia.no
Cc: linux-kernel@vger.kernel.org
Subject: Re: timer + fpu stuff locks my console race
Date: Fri, 11 Jun 2004 23:50:25 -0400 (EDT)	[thread overview]
Message-ID: <Pine.LNX.4.44.0406112308100.13607-100000@chimarrao.boston.redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.44.0406112252160.13607-100000@chimarrao.boston.redhat.com>

On Fri, 11 Jun 2004, Rik van Riel wrote:

> Reproduced here, on my test system running a 2.6 kernel.
> I did get a kernel backtrace over serial console, though ;)

With a 2.4 kernel I get a similar stack trace (also 
on alt-sysrq-p) output:

Pid/TGid: 3815/3815, comm:      kernel-hang-bz1
EIP: 0060:[<c03ec1cc>] CPU: 0
EIP is at coprocessor_error [kernel] 0x0 (2.4.21-15.5.ELsmp)
 ESP: 0060:c0113d14 EFLAGS: 00000206    Not tainted
EAX: 00100000 EBX: bfffc888 ECX: bfffc888 EDX: d9818000
ESI: bfffc888 EDI: d9819fb0 EBP: bfffc830 DS: 0068 ES: 0068 FS: 0000
GS: 0033
CR0: 80050033 CR2: b7566720 CR3: 02553380 CR4: 000006f0
Call Trace:   [<c0113d14>] restore_i387_fxsave [kernel] 0x24 (0xd9819ee4)
[<c0113de8>] restore_i387 [kernel] 0x78 (0xd9819f04)
[<c010b40e>] restore_sigcontext [kernel] 0x10e (0xd9819f18)
[<c010b51d>] sys_sigreturn [kernel] 0xed (0xd9819f94)

Now I'm not sure if the process is actually stuck in kernel
space or if it's looping tightly through both kernel and
user space...

-- 
"Debugging is twice as hard as writing the code in the first place.
Therefore, if you write the code as cleverly as possible, you are,
by definition, not smart enough to debug it." - Brian W. Kernighan


  reply	other threads:[~2004-06-12  3:50 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-06-09 21:02 timer + fpu stuff locks my console race stian
2004-06-10 21:00 ` Matias Hermanrud Fjeld
2004-06-11  6:08   ` Lars Age Kamfjord
2004-06-12  2:53 ` Rik van Riel
2004-06-12  3:50   ` Rik van Riel [this message]
2004-06-12 13:44     ` Sergey Vlasov
2004-06-12 13:57       ` stian
2004-06-12 14:28         ` Sergey Vlasov
2004-06-12 14:25       ` timer + fpu stuff locks up computer Alexander Nyberg
2004-06-12 14:42         ` stian
2004-06-12 15:20           ` martin capitanio
2004-06-12 16:15             ` stian
2004-06-12 15:14         ` Sergey Vlasov
2004-06-12 18:45           ` Sergey Vlasov
2004-06-12 20:27             ` Alexander Nyberg
2004-06-12  4:35   ` timer + fpu stuff locks my console race Matt Mackall
2004-06-10 18:59 Lars Age Kamfjord
2004-06-10 19:21 ` Lars Age Kamfjord
2004-06-10 19:27 Bård Kalbakk
2004-06-11 12:10 stian
2004-06-11 12:20 Gard Spreemann
2004-06-12 12:26 stian
2004-06-12 13:14 stian
2004-06-12 13:28 stian
2004-06-12 13:45 ` Manuel Arostegui Ramirez
2004-06-12 13:50 ` Kalin KOZHUHAROV

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