[uml-devel] 2.6.7-1: ifconfig kernel panic

[uml-devel] 2.6.7-1: ifconfig kernel panic

[shigekazun]

Hi,

My environtment are;
	host	host-skas3-2.6.7-v1.patch
	guest	uml-patch-2.6.7-1.bz2 (with its default defconfig)
Under the UML guest, simple 'ifconfig' command causes kernel panic.
uml-patch-2.4.26-2.bz2 was OK with the same environment.

ns:~# ifconfig
Kernel panic: Kernel mode fault at addr 0x55, ip 0x400ea414
In interrupt handler - not syncing
 <6>SysRq : Show Regs

EIP: 0073:[<400ea414>] CPU: 0 Not tainted ESP: 007b:bffffb68 EFLAGS: 00000246
    Not tainted
EAX: ffffffda EBX: 00000004 ECX: 000089f3 EDX: bffffb90
ESI: bffffb90 EDI: 000089f3 EBP: bffffbc8 DS: 007b ES: 007b
Call Trace: [<a00371ca>] [<a001cbdb>] [<a004424d>] [<a00364db>] [<a002f781>]
   [<a001bf71>] [<a0019cd3>] [<a001c315>] [<a0023c91>] [<a001c425>] [<a020d538>]
   [<a01b7451>] [<a020d664>] [<a0019e81>] [<a0019cd3>] [<a020d664>] [<a0019e81>]
   [<a0019cd3>] [<a0031654>] [<a0031731>] [<a0223bb0>] [<a0017730>] [<a00222f0>]
   [<a0031654>] [<a0022387>] [<a001bc17>] [<a0019e81>] [<a020d664>] [<a0023d66>]
   [<a001749e>] [<a0023e04>] [<a001749e>] [<a0023e57>] [<a0023f10>] [<a0023fb2>]
   [<a01c4c91>] [<a0023e04>] [<a0023e57>] [<a01b6f0f>] [<a01c6fc7>] [<a01c5331>]
   [<a01c7212>] [<a01bd3bf>] [<a007bf0c>] [<a005f6d2>] [<a00236b2>] [<a0019d32>]
   [<a001aba9>] [<a0023741>] [<a00226aa>] [<a00229e3>] [<a0023340>] [<a00233e1>]
   [<a020d538>] [<a0023340>] [<a002330d>] [<a0224abd>]




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Re: [uml-devel] 2.6.7-1: ifconfig kernel panic

[shigekazun]

Resolved by 'random' patch.

  kernel-source-2.6.7 <http://packages.debian.org/kernel-source-2.6.7>
+ uml-patch-2.6.7-1 <http://www.user-mode-linux.org/mirror/uml-patch-2.6.7-1.bz2>
+ random <http://user-mode-linux.sf.net/work/2.6/2.6.7-1um/random>

Now 'ifconfig' works fine.

ns:~# ifconfig
eth0      Link encap:Ethernet  HWaddr FE:FD:C0:A8:88:C8
          inet addr:192.168.136.200  Bcast:192.168.136.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:5

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

Thanks,
--
shigekazun

shigekazun@yahoo.co.jp wrote:
> Hi,
> 
> My environtment are;
> 	host	host-skas3-2.6.7-v1.patch
> 	guest	uml-patch-2.6.7-1.bz2 (with its default defconfig)
> Under the UML guest, simple 'ifconfig' command causes kernel panic.
> uml-patch-2.4.26-2.bz2 was OK with the same environment.
> 
> ns:~# ifconfig
> Kernel panic: Kernel mode fault at addr 0x55, ip 0x400ea414
> In interrupt handler - not syncing
>  <6>SysRq : Show Regs
> 
> EIP: 0073:[<400ea414>] CPU: 0 Not tainted ESP: 007b:bffffb68 EFLAGS: 00000246
>     Not tainted
> EAX: ffffffda EBX: 00000004 ECX: 000089f3 EDX: bffffb90
> ESI: bffffb90 EDI: 000089f3 EBP: bffffbc8 DS: 007b ES: 007b
> Call Trace: [<a00371ca>] [<a001cbdb>] [<a004424d>] [<a00364db>] [<a002f781>]
>    [<a001bf71>] [<a0019cd3>] [<a001c315>] [<a0023c91>] [<a001c425>] [<a020d538>]
>    [<a01b7451>] [<a020d664>] [<a0019e81>] [<a0019cd3>] [<a020d664>] [<a0019e81>]
>    [<a0019cd3>] [<a0031654>] [<a0031731>] [<a0223bb0>] [<a0017730>] [<a00222f0>]
>    [<a0031654>] [<a0022387>] [<a001bc17>] [<a0019e81>] [<a020d664>] [<a0023d66>]
>    [<a001749e>] [<a0023e04>] [<a001749e>] [<a0023e57>] [<a0023f10>] [<a0023fb2>]
>    [<a01c4c91>] [<a0023e04>] [<a0023e57>] [<a01b6f0f>] [<a01c6fc7>] [<a01c5331>]
>    [<a01c7212>] [<a01bd3bf>] [<a007bf0c>] [<a005f6d2>] [<a00236b2>] [<a0019d32>]
>    [<a001aba9>] [<a0023741>] [<a00226aa>] [<a00229e3>] [<a0023340>] [<a00233e1>]
>    [<a020d538>] [<a0023340>] [<a002330d>] [<a0224abd>]




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Linux.com, ITManagersJournal and NewsForge in the past few weeks? Now,
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Group. Come see the changes on the new OSTG site. www.ostg.com
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User-mode-linux-devel@lists.sourceforge.net
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