On Monday, 7 of April 2008, Plamen Petrov wrote:
> Hi!

Hi,

> This morning, while closing KMail from the KDE desktop to
> shutdown the machine, I got this:
>
> [===snip===]
>
> [145026.240307] general protection fault: 0000 [1] PREEMPT SMP
> [145026.240313] CPU 0
> [145026.240315] Modules linked in:
> [145026.240318] Pid: 32546, comm: kmail Not tainted
> 2.6.25-rc8-00166-g6fdf5e6 #1
> [145026.240320] RIP: 0010:[] []
> set_page_dirty+0x34/0x90
> [145026.240327] RSP: 0018:ffff810004ba9d98 EFLAGS: 00010206
> [145026.240328] RAX: 6b636f6c5f747369 RBX: ffff81000779cae0 RCX:
> ffff8100010046e0
> [145026.240330] RDX: ffffffff802c08d0 RSI: 8000000033d60067 RDI:
> ffffe20000b56d00
> [145026.240332] RBP: 000000000115c000 R08: 0000000000000006 R09:
> 0000000000000001
> [145026.240334] R10: 0000000000000002 R11: 000000000000031b R12:
> ffffe20000b56d00
> [145026.240335] R13: 0000000001200000 R14: 0000000033d60067 R15:
> 0000000000000000
> [145026.240338] FS: 0000000000000000(0000) GS:ffffffff80993000(0000)
> knlGS:0000000000000000
> [145026.240340] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [145026.240341] CR2: 00007f695e7aa3f0 CR3: 0000000000201000 CR4:
> 00000000000006e0
> [145026.240343] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
> 0000000000000000
> [145026.240345] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000400
> [145026.240347] Process kmail (pid: 32546, threadinfo ffff810004ba8000,
> task ffff81002137a000)
> [145026.240348] Stack: 0000000001155000 ffff81000779cae0
> 000000000115c000 ffffffff8027e271
> [145026.240353] 0000000000000000 0000000001574fff 0000000000000000
> ffff810004ba9ea8
> [145026.240357] ffffffffffffffff 0000000000000000 ffff81003af86bd0
> ffff810004ba9eb0
> [145026.240360] Call Trace:
> [145026.240364] [] ? unmap_vmas+0x611/0x800
> [145026.240367] [] ? exit_mmap+0x8a/0x130
> [145026.240370] [] ? mmput+0x57/0xe0
> [145026.240373] [] ? do_exit+0x19a/0x7e0
> [145026.240377] [] ? lockdep_sys_exit_thunk+0x35/0x67
> [145026.240381] [] ? __up_read+0x21/0xb0
> [145026.240383] [] ? do_group_exit+0x33/0xa0
> [145026.240386] [] ? system_call_after_swapgs+0x7b/0x80
> [145026.240387]
> [145026.240388]
> [145026.240389] Code: 48 8b 47 18 66 85 d2 78 70 a8 01 75 50 48 85 c0 74
> 4b 48 8b 80 b8 00 00 00 48 c7 c2 d0 08 2c 80 48 8b 40 20 48 85 c0 48 0f
> 44 c2 d0 85 c0 89 c5 74 21 65 48 8b 34 25 00 00 00 00 48 81 c6 d0
> [145026.240416] RIP [] set_page_dirty+0x34/0x90
> [145026.240419] RSP
> [145026.240423] ---[ end trace 6b50f2d712edcd7a ]---
> [145026.240424] Fixing recursive fault but reboot is needed!
> [145026.240426] BUG: scheduling while atomic: kmail/32546/0x00000003
> [145026.240428] INFO: lockdep is turned off.
> [145026.240430] Pid: 32546, comm: kmail Tainted: G D
> 2.6.25-rc8-00166-g6fdf5e6 #1
> [145026.240431]
> [145026.240432] Call Trace:
> [145026.240435] [] thread_return+0x34c/0x576
> [145026.240437] [] release_console_sem+0x49/0x200
> [145026.240439] [] printk+0x4e/0x60
> [145026.240441] [] do_exit+0x7ae/0x7e0
> [145026.240444] [] __wake_up+0x43/0x70
> [145026.240446] [] oops_end+0x87/0x90
> [145026.240448] [] error_exit+0x0/0x9a
> [145026.240452] [] __set_page_dirty_buffers+0x0/0xc0
> [145026.240454] [] set_page_dirty+0x34/0x90
> [145026.240457] [] __dec_zone_state+0x18/0x80
> [145026.240459] [] unmap_vmas+0x611/0x800
> [145026.240461] [] exit_mmap+0x8a/0x130
> [145026.240463] [] mmput+0x57/0xe0
> [145026.240466] [] do_exit+0x19a/0x7e0
> [145026.240468] [] lockdep_sys_exit_thunk+0x35/0x67
> [145026.240470] [] __up_read+0x21/0xb0
> [145026.240473] [] do_group_exit+0x33/0xa0
> [145026.240475] [] system_call_after_swapgs+0x7b/0x80
> [145026.240476]
>
> [===end-snip===]
>
> Should I open a bugreport at bugzilla.kernel.org with this,
> or should I try latest git tree?

Trying the latest -git tree never hurts, but you can open a bug report anyway
(you can close it later if the bug is not reproducible any more) and please
mark it as a regression and make it block bug #9832.

Thanks,
Rafael
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