Bug#414742: Kernel panic when quitting X under amd64
> We really need to see the panic message, there is no way to debug without
> it. Next time you see it on screen, please take a photo with a digital
> camera. Note that having a small font might help since you will have much
> more lines on the screen :)
No luck with netconsole, but I was finally able to get it via serial. It
took a couple of dozen tries, so I can say with certainty that this is
repeatable 100% of the time.
Unable to handle kernel paging request at ffff81003547c000 RIP:
[<ffffffff80262029>] __switch_to+0x207/0x22f
PGD 8063 PUD 9063 PMD 80000000354001e3 BAD
Oops: 0009 [1] SMP
CPU 0
Modules linked in: i915 drm button ac battery ipv6 ppp_generic slhc
dm_snapshot dm_mirror dm_mod sbp2 ieee1394 loop snd_hda_intel snd_hda_codec
i2c_i801 snd_pcm snd_timer snd soundcore atl1 i2c_core serio_raw
snd_page_alloc intel_agp psmouse joydev evdev pcspkr ext3 jbd mbcache sd_mod
ata_piix libata piix scsi_mod usbhid generic ehci_hcd ide_core e1000
uhci_hcd thermal processor fan
Pid: 2884, comm: Xorg Tainted: GF 2.6.18-4-amd64 #1
RIP: 0010:[<ffffffff80262029>] [<ffffffff80262029>] __switch_to+0x207/0x22f
RSP: 0018:ffff81003dc89e80 EFLAGS: 00010002
RAX: ffff810001008068 RBX: ffff810037f8fb00 RCX: 0000000000000008
RDX: 0000000000000000 RSI: ffff81003547c000 RDI: ffff810001008068
RBP: 0000000000000000 R08: 0000000000010000 R09: 0000000000000000
R10: 0000000000000246 R11: 0000000000000008 R12: ffff810037fefb40
R13: ffff810037fef870 R14: ffff810037f8f830 R15: ffff810001008000
FS: 00002b1ef4108ae0(0000) GS:ffffffff80521000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffff8100354003e0 CR3: 0000000035d8b000 CR4: 00000000000006e0
Process Xorg (pid: 2884, threadinfo ffff81003dc88000, task ffff810037f8f830)
Stack: 0000000000000246 ffff8100378738c0 ffff810037f8f830 0000000000000000
ffff8100378738c0 0000000000000020 ffff81000100b2a0 ffffffff8025cc4e
ffff81003dc89f70 0000000000000086 0000000000000004 0000000000000008
Call Trace:
[<ffffffff8025cc4e>] thread_return+0x0/0xe7
[<ffffffff802484b9>] sys_ioctl+0x59/0x78
[<ffffffff80258540>] sysret_careful+0xd/0x10
Code: f3 a4 eb 15 41 8b 94 24 90 02 00 00 be ff 00 00 00 48 89 c7
RIP [<ffffffff80262029>] __switch_to+0x207/0x22f
RSP <ffff81003dc89e80>
CR2: ffff81003547c000
<1>Unable to handle kernel paging request at ffff810035202000 RIP:
[<ffffffff8025bf09>] __memcpy+0x19/0xb0
PGD 8063 PUD 9063 PMD 80000000352001e3 BAD
Oops: 000b [2] SMP
CPU 1
Modules linked in: i915 drm button ac battery ipv6 ppp_generic slhc
dm_snapshot dm_mirror dm_mod sbp2 ieee1394 loop snd_hda_intel snd_hda_codec
i2c_i801 snd_pcm snd_timer snd soundcore atl1 i2c_core serio_raw
snd_page_alloc intel_agp psmouse joydev evdev pcspkr ext3 jbd mbcache sd_mod
ata_piix libata piix scsi_mod usbhid generic ehci_hcd ide_core e1000
uhci_hcd thermal processor fan
Pid: 2437, comm: syslogd Tainted: GF 2.6.18-4-amd64 #1
RIP: 0010:[<ffffffff8025bf09>] [<ffffffff8025bf09>] __memcpy+0x19/0xb0
RSP: 0018:ffff81003cf11e18 EFLAGS: 00010246
RAX: ffff810035202000 RBX: ffff810035202000 RCX: 0000000000000000
RDX: 0000000000000050 RSI: ffff81003cf10000 RDI: ffff810035202000
RBP: 00000000fffffff4 R08: ffffffff804506c0 R09: ffff810037b41e60
R10: ffff810037b41e60 R11: ffff810037b41770 R12: ffff810037f95140
R13: ffff810037b41770 R14: 0000000000000000 R15: 0000000000000000
FS: 00002abbd2f1b6d0(0000) GS:ffff810037abaac0(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffff810035200010 CR3: 000000003ddee000 CR4: 00000000000006e0
Process syslogd (pid: 2437, threadinfo ffff81003cf10000, task
ffff810037b41770)
Stack: ffff810035202000 ffffffff8021cc8f 00002abbd2f1b760 0000000000000000
ffff81003cf11f58 00007fffd7ee2340 0000000001200011 ffff810038e650c0
ffff810037f95140 0000000000000296 00002abbd2f1b760 0000000001200011
Call Trace:
[<ffffffff8021cc8f>] copy_process+0x110/0x1490
[<ffffffff8028e0f1>] alloc_pid+0x1f4/0x287
[<ffffffff8022f091>] do_fork+0xcd/0x1d0
[<ffffffff80211cb5>] generic_file_llseek+0x7f/0x8b
[<ffffffff802584d6>] system_call+0x7e/0x83
[<ffffffff802587e3>] ptregscall_common+0x67/0xac
Code: 4c 89 1f 4c 89 47 08 4c 8b 4e 10 4c 8b 56 18 4c 89 4f 10 4c
RIP [<ffffffff8025bf09>] __memcpy+0x19/0xb0
RSP <ffff81003cf11e18>
CR2: ffff810035202000
NMI Watchdog detected LOCKUP on CPU 0
CPU 0
Modules linked in: i915 drm button ac battery ipv6 ppp_generic slhc
dm_snapshot dm_mirror dm_mod sbp2 ieee1394 loop snd_hda_intel snd_hda_codec
i2c_i801 snd_pcm snd_timer snd soundcore atl1 i2c_core serio_raw
snd_page_alloc intel_agp psmouse joydev evdev pcspkr ext3 jbd mbcache sd_mod
ata_piix libata piix scsi_mod usbhid generic ehci_hcd ide_core e1000
uhci_hcd thermal processor fan
Pid: 2884, comm: Xorg Tainted: GF 2.6.18-4-amd64 #1
RIP: 0010:[<ffffffff8025e906>] [<ffffffff8025e906>]
.text.lock.spinlock+0x2/0x8a
RSP: 0018:ffffffff804c0f30 EFLAGS: 00000046
RAX: 0000001356c4521d RBX: ffff81000100b318 RCX: 0000000076680dbf
RDX: 00000012e05c445e RSI: 0000000000000000 RDI: ffff81000100b2a0
RBP: ffffffff804c0f68 R08: ffffffff805692a0 R09: ffff810080aa2000
R10: 0000000000000046 R11: ffff81000100c520 R12: ffff810037f8f830
R13: 0000000000000000 R14: ffff81000100b2a0 R15: 0000000000000009
FS: 00002b1ef4108ae0(0000) GS:ffffffff80521000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffff8100354003e0 CR3: 0000000035d8b000 CR4: 00000000000006e0
Process Xorg (pid: 2884, threadinfo ffff81003dc88000, task ffff810037f8f830)
Stack: ffffffff8027df22 00000000802846a4 ffff810037f8f830 0000000000000000
0000000000000000 ffff810037f8f830 0000000000000009 0000000000000000
ffffffff802881f9 ffff81003dc89ba8 ffff81003dc89bd0 ffff810037f8f830
Call Trace:
<IRQ> [<ffffffff8027df22>] scheduler_tick+0xbd/0x34f
[<ffffffff802881f9>] update_process_times+0x5c/0x68
[<ffffffff8026cbd8>] smp_local_timer_interrupt+0x23/0x47
[<ffffffff8026d2cc>] smp_apic_timer_interrupt+0x41/0x47
[<ffffffff8025904a>] apic_timer_interrupt+0x66/0x6c
<EOI> [<ffffffff8025e366>] __down_read+0x93/0x9a
[<ffffffff8025e2e5>] __down_read+0x12/0x9a
[<ffffffff8028abb5>] blocking_notifier_call_chain+0x13/0x36
[<ffffffff8021333f>] do_exit+0x22/0x8ae
[<ffffffff8035be12>] do_unblank_screen+0xd/0x11a
[<ffffffff8020a98a>] do_page_fault+0x68b/0x706
[<ffffffff880e5c81>] :jbd:do_get_write_access+0x4ba/0x4f1
[<ffffffff80236653>] tty_ioctl+0xcdf/0xdac
[<ffffffff802591a5>] error_exit+0x0/0x84
[<ffffffff80262029>] __switch_to+0x207/0x22f
[<ffffffff8025cc4e>] thread_return+0x0/0xe7
[<ffffffff802484b9>] sys_ioctl+0x59/0x78
[<ffffffff80258540>] sysret_careful+0xd/0x10
Code: 83 3f 00 7e f9 e9 6d fe ff ff e8 ff d7 ff ff e9 7d fe ff ff
console shuts up ...
--
Troy
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