I wrote:
> Ingo Molnar wrote:
>>also, could you try disabling hotplug (and module support too)? Maybe 
>>something in that area breaks.
> 
> OK, I'll try to minimise my .config.

I've made a minimal .config and it still doesn't work. This time it's 
init which segfaults (and I'm not sure if it really was hotplug the 
first time, I don't have the old log from netconsole).
In case you're interested, I attach the minimal .config. I also tried 
with completely disabled networking but it didn't help.

Here's the captured output from netconsole:

hdc: HL-DT-ST DVDRAM GSA-4160B, ATAPI CD/DVD-ROM drive
hdd: TEAC CD-W552E, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 1024KiB
hda: 234441648 sectors (120034 MB) w/8192KiB Cache, CHS=16383/255/63, 
UDMA(100)
hda: cache flushes supported
  hda: hda1 hda2 < hda5 hda6 hda7 hda8 > hda3
hdb: max request size: 128KiB
hdb: 39102336 sectors (20020 MB) w/2048KiB Cache, CHS=38792/16/63, UDMA(100)
hdb: cache flushes not supported
  hdb: hdb1
mice: PS/2 mouse device common for all mice
NET: Registered protocol family 2
IP: routing cache hash table of 512 buckets, 36Kbytes
TCP established hash table entries: 32768 (order: 9, 2621440 bytes)
TCP bind hash table entries: 32768 (order: 9, 2359296 bytes)
TCP: Hash tables configured (established 32768 bind 32768)
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 136k freed
kjournald starting.  Commit interval 5 seconds
input: AT Translated Set 2 keyboard on isa0060/serio0
init[1]: segfault at ffffffff8010e658 rip ffffffff8010e658 rsp 
00007fffff86b748 error 15
init[1]: segfault at ffffffff8010e658 rip ffffffff8010e658 rsp 
00007fffff86aff8 error 15
init[1]: segfault at ffffffff8010e658 rip ffffffff8010e658 rsp 
00007fffff86aff8 error 15
init[1]: segfault at ffffffff8010e658 rip ffffffff8010e658 rsp 
00007fffff86aff8 error 15
...
(infinite loop of init segfaulting)

Disabling CONFIG_LATENCY_TRACE helps.

Michal