Re: Gentoo guest with smp: emerge freeze while recompile world

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> There are almost impossible to debug.
>
> Try copying vmlinux out of your guest and attach with gdb when it
> hangs.  Then issue the command
>
>   (gdb) thread apply all backtrace
>
> to see what the guest is doing.
>
> --
> Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
------- End of Original Message -------

Hi,
I compile gentoo-sources-2.6.31-r10 and with this kernel "emerge -e world"
complete without errors!
I always use the same .config

After I try gentoo-sources-2.6.34 and vanilla-sources-2.6.34 but the problem
remain, the compile freeze and I see this in ps -elf:

5 S root      1013     1  0  76  -4 -   3125 poll_s 13:00 ?        00:00:00
/sbin/udevd --daemon
1 S root      2669     1  0  80   0 -   7523 wait   13:00 ?        00:00:00
supervising syslog-ng
5 S root      2670  2669  0  80   0 -   7556 poll_s 13:00 ?        00:00:00
/usr/sbin/syslog-ng
1 S root      3258     1  0  80   0 -   9505 poll_s 13:00 ?        00:00:00
/usr/sbin/sshd
1 S root      3378     1  0  80   0 -   4115 hrtime 13:00 ?        00:00:00
/usr/sbin/cron
0 S root      3446     1  0  80   0 -   1493 n_tty_ 13:00 tty2     00:00:00
/sbin/agetty 38400 tty2 linux
0 S root      3447     1  0  80   0 -   1493 n_tty_ 13:00 tty3     00:00:00
/sbin/agetty 38400 tty3 linux
0 S root      3448     1  0  80   0 -   1493 n_tty_ 13:00 tty4     00:00:00
/sbin/agetty 38400 tty4 linux
0 S root      3449     1  0  80   0 -   1493 n_tty_ 13:00 tty5     00:00:00
/sbin/agetty 38400 tty5 linux
0 S root      3450     1  0  80   0 -   1493 n_tty_ 13:00 tty6     00:00:00
/sbin/agetty 38400 tty6 linux
5 S root      3457     1  0  80   0 -   5959 poll_s 13:00 ?        00:00:00
SCREEN -S sb1
4 S root      3458  3457  0  80   0 -   4454 wait   13:00 pts/0    00:00:00
-/bin/bash
4 S root      3462  3458  0  75  -5 - 45171 poll_s 13:00 pts/0    00:00:34
/usr/bin/python2.6 /usr/bin/emerge -e world
4 S root      3613     1  0  80   0 - 14014 wait   13:01 tty1     00:00:00
/bin/login --
4 S root      3953  3613  0  80   0 -   4429 n_tty_ 13:01 tty1     00:00:00
-bash
0 S root      6614  3462  0  75  -5 -   972 wait   14:26 pts/0    00:00:00
[dev-util/pkgconfig-0.23] sandbox "/usr/lib64/portage/bin/ebuild.sh" compile
4 S root      6615  6614  0  75  -5 -   6362 wait   14:26 pts/0    00:00:00
/bin/bash /usr/lib64/portage/bin/ebuild.sh compile
5 S root      6646  6615  0  75  -5 -   6745 wait   14:26 pts/0    00:00:00
/bin/bash /usr/lib64/portage/bin/ebuild.sh compile
4 S root     13235  6646  0  75  -5 -  3651 wait   14:27 pts/0    00:00:00
make -j8
4 S root     13238 13235  0  75  -5 -  3652 wait   14:27 pts/0    00:00:00
make all-recursive
4 S root     13239 13238  0  75  -5 -  5956 wait   14:27 pts/0    00:00:00
/bin/sh -c set fnord $MAKEFLAGS; amf=$2; \?dot_seen=no; \?target=`echo
all-recursive | sed s/-recursive//`; \?list=
5 S root     13243 13239  0  75  -5 -  5956 wait   14:27 pts/0    00:00:00
/bin/sh -c set fnord $MAKEFLAGS; amf=$2; \?dot_seen=no; \?target=`echo
all-recursive | sed s/-recursive//`; \?list=
4 S root     13244 13243  0  75  -5 -  3686 wait   14:27 pts/0    00:00:00
make all
4 S root     13358 13244  0  75  -5 -  3684 wait   14:27 pts/0    00:00:00
make all-recursive
4 S root     13359 13358  0  75  -5 -  5956 wait   14:27 pts/0    00:00:00
/bin/sh -c set fnord $MAKEFLAGS; amf=$2; \?dot_seen=no; \?target=`echo
all-recursive | sed s/-recursive//`; \?list=
5 S root     16546 13359  0  75  -5 -  5956 wait   14:28 pts/0    00:00:00
/bin/sh -c set fnord $MAKEFLAGS; amf=$2; \?dot_seen=no; \?target=`echo
all-recursive | sed s/-recursive//`; \?list=
4 S root     16547 16546  0  75  -5 -  3652 wait   14:28 pts/0    00:00:00
make all
4 S root     16548 16547  0  75  -5 -  3652 n_tty_ 14:28 pts/0    00:00:00
make all-am
4 S root     16599  3258  0  80   0 - 17937 poll_s 15:07 ?        00:00:00
sshd: root@pts/2
4 S root     16602 16599  0  80   0 -  4429 wait   15:07 pts/2    00:00:00 -bash
4 R root     16611 16602  0  80   0 -  3698 -      15:08 pts/2    00:00:00 ps
-elf
1 S root     31506     2  0  80   0 -     0 bdi_wr 14:25 ?        00:00:00
[flush-253:0]

All in wait?
After this test I reboot in 2.6.31-r10 and I complete emerge -e world
succefully.
The problem show always with all kernels >=2.6.32
I have setup something wrong in kernel? I post the .config in the previous email.

Best regards,

Riccardo
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