[2.6.26] OOPS in __linkwatch_run_queue (unable to handle kernel NULL pointer dereference at 00000235) - Kernel

This is a discussion on [2.6.26] OOPS in __linkwatch_run_queue (unable to handle kernel NULL pointer dereference at 00000235) - Kernel ; 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 ...

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Thread: [2.6.26] OOPS in __linkwatch_run_queue (unable to handle kernel NULL pointer dereference at 00000235)

  1. [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: [] __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:[] 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] [] linkwatch_event+0x0/0x22
    [ 1037.483474] [] linkwatch_event+0x1d/0x22
    [ 1037.483534] [] run_workqueue+0x74/0xf2
    [ 1037.483596] [] worker_thread+0x0/0xbd
    [ 1037.483656] [] worker_thread+0xb3/0xbd
    [ 1037.483718] [] autoremove_wake_function+0x0/0x2d
    [ 1037.483785] [] kthread+0x38/0x5d
    [ 1037.483842] [] kthread+0x0/0x5d
    [ 1037.483901] [] 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: [] __linkwatch_run_queue+0x6d/0x15a SS:ESP 0068:f744df94
    [ 1037.485642] ---[ end trace 69e935fd5d0e15c9 ]---


    Folkert van Heusden

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  2. Re: [2.6.26] OOPS in __linkwatch_run_queue (unable to handle kernel NULL pointer dereference at 00000235)

    (cc netdev)

    On Mon, 27 Oct 2008 16:00:02 +0100 Folkert van Heusden wrote:

    > 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: [] __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:[] 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] [] linkwatch_event+0x0/0x22
    > [ 1037.483474] [] linkwatch_event+0x1d/0x22
    > [ 1037.483534] [] run_workqueue+0x74/0xf2
    > [ 1037.483596] [] worker_thread+0x0/0xbd
    > [ 1037.483656] [] worker_thread+0xb3/0xbd
    > [ 1037.483718] [] autoremove_wake_function+0x0/0x2d
    > [ 1037.483785] [] kthread+0x38/0x5d
    > [ 1037.483842] [] kthread+0x0/0x5d
    > [ 1037.483901] [] 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: [] __linkwatch_run_queue+0x6d/0x15a SS:ESP 0068:f744df94
    > [ 1037.485642] ---[ end trace 69e935fd5d0e15c9 ]---
    >
    >
    > Folkert van Heusden


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