Unkillable process in STOP state

[Slawa Olhovchenkov]

On Wed, Nov 11, 2015 at 09:44:45PM -0500, Henry Hu wrote:

> On Wed, Nov 11, 2015 at 7:12 PM, Slawa Olhovchenkov <slw at zxy.spb.ru> wrote:
> 
> > I have amd64, STABLE r288167.
> >
> > root at edge09:/home/admin # procstat -k -k 627
> >   PID    TID COMM             TDNAME           KSTACK
> >   627 100167 tcpkali.new      -                mi_switch+0xe1
> > thread_suspend_switch+0x170 thread_single+0x4e5 exit1+0xbe sys_sys_exit+0xe
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 100172 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 100173 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 100174 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 100175 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 100178 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 100180 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 102207 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 102208 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 102209 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> >   627 102211 tcpkali.new      -                mi_switch+0xe1
> > sleepq_timedwait_sig+0x8b _sleep+0x238 kern_kevent+0x401 sys_kevent+0x12a
> > amd64_syscall+0x357 Xfast_syscall+0xfb
> > root at edge09:/home/admin # procstat -t 627
> >   PID    TID COMM             TDNAME           CPU  PRI STATE   WCHAN
> >   627 100167 tcpkali.new      -                 10  120 stop    -
> >   627 100172 tcpkali.new      -                  3  152 stop    -
> >   627 100173 tcpkali.new      -                  5  152 stop    -
> >   627 100174 tcpkali.new      -                  3  152 stop    -
> >   627 100175 tcpkali.new      -                  2  149 stop    -
> >   627 100178 tcpkali.new      -                  5  152 stop    -
> >   627 100180 tcpkali.new      -                  2  132 stop    -
> >   627 102207 tcpkali.new      -                  5  136 stop    -
> >   627 102208 tcpkali.new      -                  3  152 stop    -
> >   627 102209 tcpkali.new      -                  5  139 stop    -
> >   627 102211 tcpkali.new      -                  1  120 stop    -
> >
> > kill -STOP don't have effect.
> >
> 
> Does kill -CONT work?

My bad, "kill -CONTdon't have effect"

> > gdb can't be attached.
> > _______________________________________________
> > freebsd-stable at freebsd.org mailing list
> > https://lists.freebsd.org/mailman/listinfo/freebsd-stable
> > To unsubscribe, send any mail to "freebsd-stable-unsubscribe at freebsd.org"
> >
> 
> 
> 
> -- 
> Cheers,
> Henry