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SubjectOops tty layer -- 31-rc3 and 31-rc2-git10
Date
Fyi:
Getting the following oops on shutdown with 31-rc2-git10 and 31-rc3.
(x86 UP)

BUG: unable to handle kernel NULL pointer dereference at 00000004
IP: [<c10fe4d4>] tty_ldisc_wait_idle+0x74/0xe0
*pde = 00000000
Oops: 0000 [#1]
last sysfs file:
Modules linked in: ipv6

Pid: 1954, comm: login Not tainted (2.6.31-rc3 #1) XPST450
EIP: 0060:[<c10fe4d4>] EFLAGS: 00010296 CPU: 0
EIP is at tty_ldisc_wait_idle+0x74/0xe0
EAX: 00000000 EBX: 000004e2 ECX: d7ba5df8 EDX: d7ba5dec
ESI: d78fac00 EDI: d78fac00 EBP: d7ba5df8 ESP: d7ba5dec
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process login (pid: 1954, ti=d7ba4000 task=d78ed1b0 task.ti=d7ba4000)
Stack:
00000000 d78ed1b0 c1027870 c124184c c124184c d78fac14 d78fac00 d78fac00
<0> 00000000 c10fec5a 00000001 d78fad08 d78fad08 d78fac00 c10f7fc7 00000000
<0> 00000001 d7b850a0 00000000 d7854920 d78fac00 00000001 d7983584 c10f84d6
Call Trace:
[<c1027870>] ? autoremove_wake_function+0x0/0x50
[<c10fec5a>] ? tty_ldisc_hangup+0xda/0x190
[<c10f7fc7>] ? do_tty_hangup+0x97/0x2b0
[<c10f84d6>] ? disassociate_ctty+0x36/0x150
[<c101922d>] ? do_exit+0x5dd/0x630
[<c101ef2a>] ? recalc_sigpending+0xa/0x20
[<c102172f>] ? dequeue_signal+0x2f/0x180
[<c101040b>] ? pte_alloc_one+0x1b/0x50
[<c10192aa>] ? do_group_exit+0x2a/0x80
[<c1021be9>] ? get_signal_to_deliver+0x129/0x300
[<c1001fe8>] ? do_notify_resume+0xb8/0x830
[<c10124bd>] ? dequeue_task_fair+0x1d/0x170
[<c1011999>] ? dequeue_task+0x69/0xc0
[<c11bbfb3>] ? schedule+0x233/0x360
[<c1018985>] ? do_wait+0x155/0x250
[<c1013e30>] ? default_wake_function+0x0/0x10
[<c1018b15>] ? sys_wait4+0x95/0xe0
[<c1002d3a>] ? work_notifysig+0x13/0x19
Code: 00 89 44 24 08 89 6c 24 0c 89 6c 24 10 8d 76 00 8d bc 27 00 00 00 00 b8 4c 18 24 c1 b9 02 00 00 00 89 e2 e8 af 91 f2 ff 8b 46 20 <8b> 40 04 85 c0 74 2d 89 d8 e8 ee dc 0b 00 85 c0 89 c3 75 d8 89
EIP: [<c10fe4d4>] tty_ldisc_wait_idle+0x74/0xe0 SS:ESP 0068:d7ba5dec
CR2: 0000000000000004
---[ end trace eb52b7270d368252 ]---
Fixing recursive fault but reboot is needed!

--
Pete Clements


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