Re: Processes stuck in vmo_de state

On Jan 18, 2008 8:36 PM, Pawel Worach <pawel.worach_at_gmail.com> wrote:
> Hi,
>
> On recent current when building the gnome2 meta port the build gets
> stuck, here is a ddb trace of the stuck process. Any ideas ?
>
> db> ps
>    pid  ppid  pgrp   uid   state   wmesg     wchan    cmd
> 46836 46834 81809     0  S+      piperd   0xc80d6da4 grep
> 46835 46834 81809     0  S+      vmo_de   0xc080f074 sh
> 46834 46719 81809     0  S+      wait     0xc3dc82ac sh
> db> bt 46835
> Tracing pid 46835 tid 100105 td 0xc3e1f000
> sched_switch(c3e1f000,0,1,20794e9a,1b01,...) at sched_switch+0x46b
> mi_switch(1,0,c3e1f000,e6597940,c05ad5e7,...) at mi_switch+0x120
> sleepq_switch(c3e1f000,0,c079c9f3,240,0,...) at sleepq_switch+0x88
> sleepq_timedwait(c080f074,1,c07acfa9,2,0,...) at sleepq_timedwait+0x37
> _sleep(c080f074,0,0,c07acfa9,1,...) at _sleep+0x2c4
> pause(c07acfa9,1,0,0,0,...) at pause+0x30
> vm_object_deallocate(c59b2480,281d8000,281f5000,c21e4000,0,...) at
> vm_object_deallocate+0x34b
> vm_map_delete(c4543828,0,bfc00000,c39c5000,c4543828,...) at
> vm_map_delete+0x348
> vm_map_remove(c4543828,0,bfc00000,c079ff3d,11a,...) at vm_map_remove+0x55
> exec_new_vmspace(e6597be8,c07ec800,e6597be8,e6597ae8,c055855f,...) at
> exec_new_vmspace+0x1b0
> exec_elf32_imgact(e6597be8,38,687,c14d51c0,e0cbf000,...) at
> exec_elf32_imgact+0x21a
> kern_execve(c3e1f000,e6597c5c,0,81899c0,8189ee4,e0cbf000,e0cbf000,e0cbf031,e0cbf6b8,e0cff000,3f948,4,38)
> at kern_execve+0x3a1
> execve(c3e1f000,e6597cfc,c,e6597d38,e6597d2c,...) at execve+0x4c
> syscall(e6597d38) at syscall+0x345
> Xint0x80_syscall() at Xint0x80_syscall+0x20
> --- syscall (59, FreeBSD ELF32, execve), eip = 0x28145c2f, esp =
> 0xbfbfcdfc, ebp = 0xbfbfce18 ---
>
> --
> Pawel

I ran into the same thing recently too.  Same stack trace.  The
machine was running with the ULE scheduler and I heard hints that this
problem tends to turn up only with ULE.

-- 
Peter Wemm - peter_at_wemm.org; peter_at_FreeBSD.org; peter_at_yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5