On 16.12.2012 22:36, Geert Stappers wrote:
> On Sun, Dec 16, 2012 at 06:54:08PM +0100, Geert Stappers wrote:
>> On Sun, Dec 16, 2012 at 02:50:10PM +0400, Michael Tokarev wrote:
>>
>>> maybe some minimal reproducer,
>>
>>  - create a mips chroot tree with multistrap, I have it named 'oa'
>>  - cp /usr/bin/qemu-mips-static oa/usr/bin
>>  - chroot oa
>>  - beng, the segfault
>>
>> I'll provide files for easy reproduction.

Ok, I looked at the scripts you provided, and run them.

After installing the mips system in my environment,
I can chroot into the system root and run commands just
fine:

gandalf:/tmp/bts678029# chroot oa bash
I have no name!@gandalf:/# ls -l
total 4
drwxr-xr-x  2 0 0 1440 Sep 14 21:43 bin
drwxr-xr-x  2 0 0   40 Jun 17 12:46 boot
-rwxr-xr-x  1 0 0   84 Dec 16 18:24 configure.bash
drwxr-xr-x  2 0 0  460 Dec 16 18:24 dev
drwxr-xr-x 30 0 0  920 Sep 14 21:43 etc
drwxr-xr-x  2 0 0   40 Jun 17 12:46 home
drwxr-xr-x  7 0 0  160 Jun 22 18:59 lib
lrwxrwxrwx  1 0 0    5 Dec 16 18:22 lib64 -> ./lib
drwxr-xr-x  2 0 0   40 Jun 17 12:46 mnt
drwxr-xr-x  2 0 0   40 Jun 17 12:46 proc
drwx------  2 0 0   60 Dec 16 18:26 root
drwxr-xr-x  2 0 0   40 Nov 16 21:30 run
drwxr-xr-x  2 0 0 1460 Sep 14 21:43 sbin
drwxr-xr-x  2 0 0   40 Jun 10  2012 selinux
drwxr-xr-x 12 0 0    0 Nov 27 08:10 sys
drwxrwxrwt  3 0 0   60 Dec 16 18:24 tmp
drwxr-xr-x  9 0 0  180 Jun 22 18:59 usr
drwxr-xr-x 11 0 0  220 Nov 16 20:52 var
I have no name!@gandalf:/# uname -a
Linux gandalf 3.2.0-amd64 #3.2.30 SMP Thu Sep 20 18:50:45 MSK 2012 mips 
GNU/Linux

gandalf:/tmp/bts678029# sh ./trigger
mounting done
triggering bug 678029
mips
unmounting
back to normal


So it looks like the mips emulation works fine, I don't
see any crashes or core dumps.

[]
> mkdir -p oa/sysfs

Btw, is it really sysfs and not sys?


Thanks,

/mjt


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