[uml-devel] kernel warning and hang in 3.4.47

[uml-devel] kernel warning and hang in 3.4.47

[Chris Frey]

Hi,

I'm running a 3.4.47 UML kernel on a 3.4.47 system.

Recently I got the following warning, just before the UML guest system
became unresponsive:

------------[ cut here ]------------
WARNING: at kernel/softirq.c:159 local_bh_enable+0x3b/0x8b()
Modules linked in:
21274430:  [<081f3adb>] dump_stack+0x1c/0x20

This is little to go on, I'm guessing.  What should I do to provide
more data?

Thanks,
- Chris


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Re: [uml-devel] kernel warning and hang in 3.4.47

[Chris Frey]

And another error, this time a panic in the UML kernel again, using
the same versions:

EIP: 0073:[<0805f5c2>] CPU: 0 Not tainted ESP: 007b:0827227c EFLAGS: 00210206
    Not tainted
EAX: 00000000 EBX: 0000000b ECX: 00000000 EDX: 0000000e
ESI: 000000a0 EDI: 0827232c EBP: 08272318 DS: 007b ES: 007b
08271dc8:  [<0806fb90>] show_regs+0xc5/0xcd
08271df4:  [<0805f5d3>] segv+0x59/0x242
08271e9c:  [<0805f811>] segv_handler+0x55/0x60
08271ec4:  [<0806b1ae>] sig_handler_common+0x6d/0x7f

Kernel panic - not syncing: Segfault with no mm
08271dc0:  [<081f3adb>] dump_stack+0x1c/0x20
08271dd8:  [<081f3b48>] panic+0x69/0x157
08271df0:  [<0805f681>] segv+0x107/0x242
08271e9c:  [<0805f811>] segv_handler+0x55/0x60
08271ec4:  [<0806b1ae>] sig_handler_common+0x6d/0x7f


EIP: 0000:[<00000000>] CPU: 0 Not tainted EFLAGS: 00000000
    Not tainted
EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
ESI: 00000000 EDI: 00000000 EBP: 00000000 DS: 0000 ES: 0000
08271d34:  [<0806fb90>] show_regs+0xc5/0xcd
08271d60:  [<0805f920>] panic_exit+0x25/0x3b   
08271d74:  [<0808afed>] notifier_call_chain+0x25/0x4a
08271d9c:  [<0808b029>] __atomic_notifier_call_chain+0x17/0x19
08271dac:  [<0808b040>] atomic_notifier_call_chain+0x15/0x17
08271dc8:  [<081f3b60>] panic+0x81/0x157
08271df0:  [<0805f681>] segv+0x107/0x242
08271e9c:  [<0805f811>] segv_handler+0x55/0x60
08271ec4:  [<0806b1ae>] sig_handler_common+0x6d/0x7f


- Chris



On Mon, Jun 10, 2013 at 03:37:22PM -0400, Chris Frey wrote:
> Hi,
> 
> I'm running a 3.4.47 UML kernel on a 3.4.47 system.
> 
> Recently I got the following warning, just before the UML guest system
> became unresponsive:
> 
> ------------[ cut here ]------------
> WARNING: at kernel/softirq.c:159 local_bh_enable+0x3b/0x8b()
> Modules linked in:
> 21274430:  [<081f3adb>] dump_stack+0x1c/0x20
> 
> This is little to go on, I'm guessing.  What should I do to provide
> more data?
> 
> Thanks,
> - Chris
> 
> 
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by Windows:
> 
> Build for Windows Store.
> 
> http://p.sf.net/sfu/windows-dev2dev
> _______________________________________________
> User-mode-linux-devel mailing list
> User-mode-linux-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel

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