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Message-ID: <20081027150001.GQ8318@vanheusden.com>
Date: Mon, 27 Oct 2008 16:00:02 +0100
From: Folkert van Heusden <folkert@...heusden.com>
To: linux-kernel@...r.kernel.org
Subject: [2.6.26] OOPS in __linkwatch_run_queue (unable to handle kernel
NULL pointer dereference at 00000235)
Hi,
While running my http://vanheusden.com/pyk/ script (which randomly
inserts and removes modules) I triggered the folllowing oops in a 2.6.26
kernel on a pre-ht pentium 4 (hp pavillion laptop type zv5231ea):
[ 1037.480097] BUG: unable to handle kernel NULL pointer dereference at 00000235
[ 1037.480188] IP: [<c0261078>] __linkwatch_run_queue+0x6d/0x15a
[ 1037.480256] *pde = 00000000
[ 1037.480315] Oops: 0000 [#1] SMP
[ 1037.480393] Modules linked in: pcspkr(+) dm_snapshot joydev cdrom cpufreq_conservative snd_atiixp_modem(+) ohci_hcd(+) serio_raw wmi loop i2c_piix4 button ac sbp2 parport_pc lp psmouse output snd_seq_device pci_hotplug arc4 ecb crypto_blkcipher b43legacy input_polldev led_class rng_core rfkill_input rfkill cpufreq_stats ssb pcmcia firmware_class mac80211 parport cpufreq_ondemand dm_mirror i2c_core freq_table cfg80211 dm_log snd_ac97_codec ac97_bus ieee1394 scsi_mod snd_pcm snd_timer yenta_socket rsrc_nonstatic snd_page_alloc radeon drm rfcomm l2cap bluetooth ipv6 snd soundcore ati_agp agpgart evdev ext3 jbd mbcache dm_mod ide_disk 8139cp atiixp 8139too mii pcmcia_core ide_pci_generic ide_core usbcore processor thermal_sys [last unloaded: b44]
[ 1037.482294]
[ 1037.482328] Pid: 6, comm: events/0 Not tainted (2.6.26-1-686 #1)
[ 1037.482365] EIP: 0060:[<c0261078>] EFLAGS: 00010246 CPU: 0
[ 1037.482403] EIP is at __linkwatch_run_queue+0x6d/0x15a
[ 1037.482439] EAX: f744c000 EBX: 00000001 ECX: c03632a4 EDX: 01553000
[ 1037.482476] ESI: 00000003 EDI: 00000000 EBP: 00000001 ESP: f744df94
[ 1037.482536] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 1037.482572] Process events/0 (pid: 6, ti=f744c000 task=f743e460 task.ti=f744c000)
[ 1037.482609] Stack: f7414600 c03632a0 c0261165 00000000 c0261182 c012edee f7414600 c012f4c9
[ 1037.482855] f741460c c012f57c 00000000 f743e460 c013177c f744dfc8 f744dfc8 f7414600
[ 1037.483101] 00000000 c01316bb c0131683 00000000 c01044f3 f7441ef8 00000000 00000000
[ 1037.483346] Call Trace:
[ 1037.483412] [<c0261165>] linkwatch_event+0x0/0x22
[ 1037.483474] [<c0261182>] linkwatch_event+0x1d/0x22
[ 1037.483534] [<c012edee>] run_workqueue+0x74/0xf2
[ 1037.483596] [<c012f4c9>] worker_thread+0x0/0xbd
[ 1037.483656] [<c012f57c>] worker_thread+0xb3/0xbd
[ 1037.483718] [<c013177c>] autoremove_wake_function+0x0/0x2d
[ 1037.483785] [<c01316bb>] kthread+0x38/0x5d
[ 1037.483842] [<c0131683>] kthread+0x0/0x5d
[ 1037.483901] [<c01044f3>] kernel_thread_helper+0x7/0x10
[ 1037.483974] =======================
[ 1037.484007] Code: 80 05 00 8b 1d 9c b5 41 c0 c7 05 9c b5 41 c0 00 00 00 00 90 fe 05 90 b5 41 c0 fb 0f 1f 84 00 00 00 00 00 90 e9 ce 00 00 00 85 ff <8b> ab 34 02 00 00 74 17 89 d8 e8 7d fe ff ff 85 c0 75 0c 89 d8
[ 1037.484013] EIP: [<c0261078>] __linkwatch_run_queue+0x6d/0x15a SS:ESP 0068:f744df94
[ 1037.485642] ---[ end trace 69e935fd5d0e15c9 ]---
Folkert van Heusden
--
Multi tail barnamaj mowahib li mora9abat attasjilat wa nataij awamir
al 7asoub. damj, talwin, mora9abat attarchi7 wa ila akhirih.
http://www.vanheusden.com/multitail/
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