On 7/06/2007 3:03 PM, Andrew Morton wrote:
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc4/2.6.22-rc4-mm2/
- Basically a bugfixed version of 2.6.22-rc4-mm1. None of the subsystem
trees were repulled, several bad patches were dropped, a few were fixed.
I've come home to find my server has locked up hard, with a panic on the screen.
This time unlike others, I was able to grab a photo of it for further analysis.
http://www.reub.net/files/kernel/ serial-crash.jpg
[Note also the .config and dmesg in the same directory]
I have had this or a very similar traceback appear about 3 or 4 times now,
including with a 2.6.21-gentoo kernel (based on mainline), so this bug may well
be present in mainline. It is not new to this -mm release.
The bug does not occur on demand, it just seems to happen every few days without
obvious warning, I haven't reported it until now as I haven't had any other
information to provide other than "some panic seems to happen with a tty_write
something-or-other".
The other possibly crucial piece of information on this is that I have one of my
serial ports set up as a serial console. The kernel boot commands for this are:
kernel /vmlinuz-2.6.22-rc4-mm2 ro real_root=/dev/md2 console=tty0
console=ttyS0,57600 panic=30
as well as this:
# SERIAL CONSOLES
s0:12345:respawn:/sbin/agetty 57600 ttyS0 vt100
in inittab.
The other serial port is connected up to my APC UPS and is set up with apcupsd.
Reuben
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