7.2-PRERELEASE: make process waiting indefinitely
Ronald Klop
ronald-freebsd8 at klop.yi.org
Wed Apr 15 09:14:43 UTC 2009
On Tue, 14 Apr 2009 15:04:11 +0200, Oleg V. Nauman <oleg at opentransfer.com>
wrote:
>
> Have experienced today strange issue with my fresh RELENG_7 ( sources
> from yesterday April 13, userland and kernel in sync ) - sometimes some
> processes stop running without any visible reason. Have seen it twice
> today during KDE compilation - make process just waiting for something
> while nothing else compiles or some other way prevents this process from
> running ( no SIGSTOP performed, no Ctrl-S performed on console). Well it
> possible related to ( or triggered by ) new ports compilation feature
> for SMP machines ( most of KDE port marked as MAKE_JOBS_SAFE=yes ) but
> anyway this stuck process behavior is strange. kill -SIGCONT not helps,
> but it killable ( Ctrl-C helps at least )
> Well some info related to this process:
> procstat -t 63472 output:
>
> PID TID COMM TDNAME CPU PRI STATE WCHAN
> 63472 100059 make - 1 92 sleep wait
>
> procstat -kk 63472 output:
>
> PID TID COMM TDNAME KSTACK
> 63472 100059 make - mi_switch+0x2c8
> sleepq_switch+0xd9 sleepq_catch_signals+0x239 sleepq_wait_sig+0x14
> _sleep+0x307 kern_wait+0xa36 wait4+0x3b syscall+0x2b3
> Xint0x80_syscall+0x20
>
> Some related sysctls output:
>
> kern.smp.cpus: 2
> kern.smp.disabled: 0
> kern.smp.active: 1
>
> uname -msr output:
> FreeBSD 7.2-PRERELEASE i386
It sounds like
http://www.mail-archive.com/freebsd-stable@freebsd.org/msg102628.html .
There are some tips in that mailthread about debugging it.
Ronald.
More information about the freebsd-stable
mailing list