* DWARF2 unwinder stuck
@ 2006-10-04 20:46 Jiri Kosina
2006-10-05 0:04 ` Horst H. von Brand
0 siblings, 1 reply; 3+ messages in thread
From: Jiri Kosina @ 2006-10-04 20:46 UTC (permalink / raw)
To: Andi Kleen; +Cc: linux-kernel
Hi Andi,
I know you are hunting all the DWARF2 unwinding stucks. I have just got
the one below, when debuging kernel panic in MPU401 driver, with Linus'
current git tree.
Do you have fix for this one queued somewhere?
Thanks.
Call Trace:
[<c025e0a6>] bus_remove_device+0x78/0x91
[<c025d106>] device_del+0x141/0x172
[<c025fc9a>] platform_device_unregister+0x8/0x10
[<c01004ae>] alsa_card_mpu401_init+0x4c/0x78
[<c0104087>] kernel_thread_helper+0x7/0x10
DWARF2 unwinder stuck at kernel_thread_helper+0x7/0x10
Leftover inexact backtrace:
=======================
Code: fe ff ff 89 d8 e8 89 20 00 00 8d 43 04 8d 56 04 8b 48 04 89 50 04 89 46 04 00 00 89 f8 e8 19 ff ff ff 85 c0 b8 00
EIP: [<c041f280>] klist_del+0x7/0x31 SS:ESP 0068:c14c1f6c
--
Jiri Kosina
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: DWARF2 unwinder stuck
2006-10-04 20:46 DWARF2 unwinder stuck Jiri Kosina
@ 2006-10-05 0:04 ` Horst H. von Brand
2006-10-05 0:28 ` Andi Kleen
0 siblings, 1 reply; 3+ messages in thread
From: Horst H. von Brand @ 2006-10-05 0:04 UTC (permalink / raw)
To: Jiri Kosina; +Cc: Andi Kleen, linux-kernel
Jiri Kosina <jikos@jikos.cz> wrote:
> Hi Andi,
>
> I know you are hunting all the DWARF2 unwinding stucks. I have just got
> the one below, when debuging kernel panic in MPU401 driver, with Linus'
> current git tree.
OK, if somebody is collecting these beasts...
Loading the ipw3945-1.1.0 driver I get with Fedora rawhide's
2.6.18-1.2726.fc6 on a Centrino duo:
ieee80211_crypt: registered algorithm 'NULL'
ieee80211: 802.11 data/management/control stack, git-1.1.13
ieee80211: Copyright (C) 2004-2005 Intel Corporation <jketreno@linux.intel.com>
ipw3945: Intel(R) PRO/Wireless 3945 Network Connection driver for Linux, 1.1.0d
ipw3945: Copyright(c) 2003-2006 Intel Corporation
ACPI: PCI Interrupt 0000:05:00.0[A] -> GSI 18 (level, low) -> IRQ 185
PCI: Setting latency timer of device 0000:05:00.0 to 64
ipw3945: Detected Intel PRO/Wireless 3945ABG Network Connection
ipw3945: Detected geography ABG (11 802.11bg channels, 13 802.11a channels)
=======================================================
[ INFO: possible circular locking dependency detected ]
2.6.18-1.2726.fc6 #1
-------------------------------------------------------
iwconfig/3058 is trying to acquire lock:
(&priv->mutex){--..}, at: [<c06133a2>] mutex_lock+0x21/0x24
but task is already holding lock:
(rtnl_mutex){--..}, at: [<c06133a2>] mutex_lock+0x21/0x24
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (rtnl_mutex){--..}:
[<c043bf70>] lock_acquire+0x4b/0x6b
[<c0613233>] __mutex_lock_slowpath+0xbc/0x20a
[<c06133a2>] mutex_lock+0x21/0x24
[<c05c083c>] rtnl_lock+0xd/0xf
[<c05b9be8>] register_netdev+0xe/0x69
[<f8e882b4>] ipw_bg_calibrated_work+0x6c/0x1d1 [ipw3945]
[<c043330a>] run_workqueue+0x7a/0xbb
[<c0433c3f>] worker_thread+0xd2/0x107
[<c04361b9>] kthread+0xc3/0xf2
[<c0402005>] kernel_thread_helper+0x5/0xb
-> #0 (&priv->mutex){--..}:
[<c043bf70>] lock_acquire+0x4b/0x6b
[<c0613233>] __mutex_lock_slowpath+0xbc/0x20a
[<c06133a2>] mutex_lock+0x21/0x24
[<f8e8dba6>] ipw_wx_set_essid+0x3c/0x21e [ipw3945]
[<c05c384c>] ioctl_standard_call+0x15c/0x217
[<c05c3b4d>] wireless_process_ioctl+0x55/0x313
[<c05ba776>] dev_ioctl+0x433/0x46e
[<c05b00bd>] sock_ioctl+0x1b4/0x1c7
[<c0482f3a>] do_ioctl+0x22/0x67
[<c04831d7>] vfs_ioctl+0x258/0x26b
[<c0483231>] sys_ioctl+0x47/0x62
[<c0403fb7>] syscall_call+0x7/0xb
other info that might help us debug this:
1 lock held by iwconfig/3058:
#0: (rtnl_mutex){--..}, at: [<c06133a2>] mutex_lock+0x21/0x24
stack backtrace:
[<c04051ed>] show_trace_log_lvl+0x58/0x16a
[<c04057fa>] show_trace+0xd/0x10
[<c0405913>] dump_stack+0x19/0x1b
[<c043b0e7>] print_circular_bug_tail+0x59/0x64
[<c043b870>] __lock_acquire+0x77e/0x90d
[<c043bf70>] lock_acquire+0x4b/0x6b
[<c0613233>] __mutex_lock_slowpath+0xbc/0x20a
[<c06133a2>] mutex_lock+0x21/0x24
[<f8e8dba6>] ipw_wx_set_essid+0x3c/0x21e [ipw3945]
[<c05c384c>] ioctl_standard_call+0x15c/0x217
[<c05c3b4d>] wireless_process_ioctl+0x55/0x313
[<c05ba776>] dev_ioctl+0x433/0x46e
[<c05b00bd>] sock_ioctl+0x1b4/0x1c7
[<c0482f3a>] do_ioctl+0x22/0x67
[<c04831d7>] vfs_ioctl+0x258/0x26b
[<c0483231>] sys_ioctl+0x47/0x62
[<c0403fb7>] syscall_call+0x7/0xb
DWARF2 unwinder stuck at syscall_call+0x7/0xb
Leftover inexact backtrace:
[<c04057fa>] show_trace+0xd/0x10
[<c0405913>] dump_stack+0x19/0x1b
[<c043b0e7>] print_circular_bug_tail+0x59/0x64
[<c043b870>] __lock_acquire+0x77e/0x90d
[<c043bf70>] lock_acquire+0x4b/0x6b
[<c0613233>] __mutex_lock_slowpath+0xbc/0x20a
[<c06133a2>] mutex_lock+0x21/0x24
[<f8e8dba6>] ipw_wx_set_essid+0x3c/0x21e [ipw3945]
[<c05c384c>] ioctl_standard_call+0x15c/0x217
[<c05c3b4d>] wireless_process_ioctl+0x55/0x313
[<c05ba776>] dev_ioctl+0x433/0x46e
[<c05b00bd>] sock_ioctl+0x1b4/0x1c7
[<c0482f3a>] do_ioctl+0x22/0x67
[<c04831d7>] vfs_ioctl+0x258/0x26b
[<c0483231>] sys_ioctl+0x47/0x62
[<c0403fb7>] syscall_call+0x7/0xb
ADDRCONF(NETDEV_UP): eth1: link is not ready
ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
eth1: no IPv6 routers present
Reported as <https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=209385>
--
Dr. Horst H. von Brand User #22616 counter.li.org
Departamento de Informatica Fono: +56 32 2654431
Universidad Tecnica Federico Santa Maria +56 32 2654239
Casilla 110-V, Valparaiso, Chile Fax: +56 32 2797513
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: DWARF2 unwinder stuck
2006-10-05 0:04 ` Horst H. von Brand
@ 2006-10-05 0:28 ` Andi Kleen
0 siblings, 0 replies; 3+ messages in thread
From: Andi Kleen @ 2006-10-05 0:28 UTC (permalink / raw)
To: Horst H. von Brand; +Cc: Jiri Kosina, linux-kernel
On Thursday 05 October 2006 02:04, Horst H. von Brand wrote:
> Jiri Kosina <jikos@jikos.cz> wrote:
> > Hi Andi,
> >
> > I know you are hunting all the DWARF2 unwinding stucks. I have just got
> > the one below, when debuging kernel panic in MPU401 driver, with Linus'
> > current git tree.
>
> OK, if somebody is collecting these beasts...
I'm only interested in reports from recent git.
>
> Loading the ipw3945-1.1.0 driver I get with Fedora rawhide's
> 2.6.18-1.2726.fc6 on a Centrino duo:
This is too old.
-Andi
^ permalink raw reply [flat|nested] 3+ messages in thread
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2006-10-04 20:46 DWARF2 unwinder stuck Jiri Kosina
2006-10-05 0:04 ` Horst H. von Brand
2006-10-05 0:28 ` Andi Kleen
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