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:[<ffffffff80275274>]  [<ffffffff80275274>] 
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]  [<ffffffff8027e271>] ? unmap_vmas+0x611/0x800
[145026.240367]  [<ffffffff8028252a>] ? exit_mmap+0x8a/0x130
[145026.240370]  [<ffffffff80236957>] ? mmput+0x57/0xe0
[145026.240373]  [<ffffffff8023cc8a>] ? do_exit+0x19a/0x7e0
[145026.240377]  [<ffffffff807079fb>] ? lockdep_sys_exit_thunk+0x35/0x67
[145026.240381]  [<ffffffff803f6281>] ? __up_read+0x21/0xb0
[145026.240383]  [<ffffffff8023d303>] ? do_group_exit+0x33/0xa0
[145026.240386]  [<ffffffff8020b56b>] ? 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 <ff> d0 85 c0 89 c5 74 21 65 48 8b 34 25 00 00 00 00 48 81 c6 d0
[145026.240416] RIP  [<ffffffff80275274>] set_page_dirty+0x34/0x90
[145026.240419]  RSP <ffff810004ba9d98>
[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]  [<ffffffff80705a26>] thread_return+0x34c/0x576
[145026.240437]  [<ffffffff80239469>] release_console_sem+0x49/0x200
[145026.240439]  [<ffffffff80239e5e>] printk+0x4e/0x60
[145026.240441]  [<ffffffff8023d29e>] do_exit+0x7ae/0x7e0
[145026.240444]  [<ffffffff8022e223>] __wake_up+0x43/0x70
[145026.240446]  [<ffffffff8020c8e7>] oops_end+0x87/0x90
[145026.240448]  [<ffffffff8070884d>] error_exit+0x0/0x9a
[145026.240452]  [<ffffffff802c08d0>] __set_page_dirty_buffers+0x0/0xc0
[145026.240454]  [<ffffffff80275274>] set_page_dirty+0x34/0x90
[145026.240457]  [<ffffffff8027b6f8>] __dec_zone_state+0x18/0x80
[145026.240459]  [<ffffffff8027e271>] unmap_vmas+0x611/0x800
[145026.240461]  [<ffffffff8028252a>] exit_mmap+0x8a/0x130
[145026.240463]  [<ffffffff80236957>] mmput+0x57/0xe0
[145026.240466]  [<ffffffff8023cc8a>] do_exit+0x19a/0x7e0
[145026.240468]  [<ffffffff807079fb>] lockdep_sys_exit_thunk+0x35/0x67
[145026.240470]  [<ffffffff803f6281>] __up_read+0x21/0xb0
[145026.240473]  [<ffffffff8023d303>] do_group_exit+0x33/0xa0
[145026.240475]  [<ffffffff8020b56b>] 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?

Kernel config (gzipped) used, full dmesg output plus
lspci -vv (as root) attached.

P.S. I'm not subscribed to linux-kernel@vger.kernel.org.
-- 
Plamen Petrov, network & system administrator
Filial - Silistra
RU "Angel Kantchev"
http://fs.ru.acad.bg/
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