Hi all,
Sending this out before I spend much time researching as maybe it's a
known and fixed problem.
When I send a signal (apparently even 0, to check whether the process
is alive) from the host to a guest process, "something bad" happens.
It looks like a spinlock isn't being released as all kinds of
processes are getting stuck in uninterruptible sleep, loadavg shoots
through the roof and the machine has to be power cycled (sysrq-b works
but e.g. sysrq-s never finishes). There are no errors in dmesg (apart
from usual "did lookup hidden devpts" spam). FWIW, lockdep is off.
Best regards,
Grzegorz Nosek
---------------------------------------------------------------------
Versions:
Kernel: 2.6.27.42-00007-gf591647
VS-API: 0x00020304
util-vserver: 0.30.213; May 9 2007, 20:02:07
Features:
CC: gcc, gcc (GCC) 4.1.2 20061115 (prerelease)
(Debian 4.1.1-21)
CXX: g++, g++ (GCC) 4.1.2 20061115 (prerelease)
(Debian 4.1.1-21)
CPPFLAGS: ''
CFLAGS: '-g -O2 -std=c99 -Wall -pedantic -W -funit-at-a-time'
CXXFLAGS: '-g -O2 -ansi -Wall -pedantic -W
-fmessage-length=0 -funit-at-a-time'
build/host: i686-pc-linux-gnu/i686-pc-linux-gnu
Use dietlibc: yes
Build C++ programs: yes
Build C99 programs: yes
Available APIs: v13,net,v21
ext2fs Source: e2fsprogs
syscall(2) invocation: alternative
vserver(2) syscall#: 273/glibc
Paths:
prefix: /usr
sysconf-Directory: /etc
cfg-Directory: /etc/vservers
initrd-Directory: $(sysconfdir)/init.d
pkgstate-Directory: /var/run/vservers
vserver-Rootdir: /vservers
Received on Mon Apr 12 11:01:10 2010