Re: Panic when running 'halt' on 3.2.9-rt15

On 03/05/2012 08:05 AM, Luis Claudio R. Goncalves wrote:

Two backtraces, one with warnings and another one with a kernel panic:

Hi, I also see a panic here on a Lenovo T61 (Core 2 Duo) on shutdown 
(I'll post a picture of the screen later) and some of my users in Planet 
CCRMA report similar issues with 3.2.9 rt15:

On 03/04/2012 01:27 AM, Mark Knoop wrote:

At 10:54 on 03 Mar 2012, Fernando Lopez-Lezcano wrote:

quoted

On 03/02/2012 09:22 PM, Michael J. Wilson wrote:

quoted

Hi Nando,

Lenovo Thinkpad x220, FC16.

3.2.7-1.rt13 was giving me some shutdown problems (after drives
unmounted device would not halt; maybe ACPI issue?)

Hmm, yes, I saw a problem with my test laptop last night after testing
3.2.9, I got a panic on shutdown (which I had not seen before, I
think). I was about to go home so I did not try to document it and
submit a bug report.

Did you see a kernel panic as well? Or just hangs?

Hi, yes I'm seeing these problems too on shutdown.

3.2.7-1.rt13 hangs for a while (1-2 minutes) with no output then
eventually shuts down fine (from Sending SIGTERM to all running
tasks...)

3.2.9-rt15 I get a panic on shutdown, the details scroll offscreen but
it looks like a general protection fault. What's the best way to debug
this?

But I should also say that both kernels seem to run very well except
for these problems.

-- Fernando

Backtrace 01: (panic)
-------------

[root@lab ~]# halt

[  428.406096] ACPI: Preparing to enter system sleep state S5
[  428.407145] Disabling non-boot CPUs ...
[  428.410419] lockdep: fixing up alternatives.
[  428.415125] ------------[ cut here ]------------
[  428.443541] WARNING: at kernel/sched.c:4415 migrate_disable+0x5d/0xbf()
[  428.450179] Hardware name: 8810A56
[  428.454001] BUG: unable to handle kernel paging request at ffffffff8103e98f
[  428.454001] IP: [<ffffffff8106b749>] __lock_acquire+0xa9/0x42e
[  428.454001] PGD 1810067 PUD 1814063 PMD 10001e1
[  428.454001] Thread overran stack, or stack corrupted
[  428.454001] Oops: 0003 [#1] PREEMPT SMP
[  428.454001] CPU 0
[  428.454001] Modules linked in: bridge stp autofs4 nf_conntrack_ipv6 nf_defrag_ipv6 ipv6 binfmt_misc ext3 jbd ext2 dm_mirror dm_regio]
[  428.454001]
[  428.454001] Pid: 12, comm: ksoftirqd/1 Not tainted 3.2.9-rt15+ #36 LENOVO 8810A56/LENOVO
[  428.454001] RIP: 0010:[<ffffffff8106b749>]  [<ffffffff8106b749>] __lock_acquire+0xa9/0x42e
[  428.454001] RSP: 0018:ffff88007ea03cf8  EFLAGS: 00010082
[  428.454001] RAX: ffffffff8103e7f7 RBX: ffff88007c07a2b8 RCX: 0000000000000000
[  428.454001] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88007c07a2b8
[  428.454001] RBP: ffff88007ea03d48 R08: 0000000000000001 R09: 0000000000000001
[  428.454001] R10: 00000000000001ab R11: ffff88007c090300 R12: 0000000000000000
[  428.454001] R13: ffff88007c090300 R14: 0000000000000000 R15: 0000000000000001
[  428.454001] FS:  0000000000000000(0000) GS:ffff88007ea00000(0000) knlGS:0000000000000000
[  428.454001] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[  428.454001] CR2: ffffffff8103e98f CR3: 00000000771ae000 CR4: 00000000000006f0
[  428.454001] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  428.454001] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[  428.454001] Process ksoftirqd/1 (pid: 12, threadinfo ffff88007c08a000, task ffff88007c090300)
[  428.454001] Stack:
[  428.454001]  ffff880000000000 ffffffff00000000 000000007ea03d28 ffffffff81060993
[  428.454001]  0000000000000000 0000000000000000 ffff88007c090300 ffffffff810341dc
[  428.454001]  0000000000000001 0000000000000000 ffff88007ea03dc8 ffffffff8106bb92

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