On 01/06/11 12:52, Hugh Dickins wrote:
I guess Brad could try SLUB debugging, boot with slub_debug=P
for poisoning perhaps; though it might upset alignments and
drive the problem underground. Or see if the same happens
with SLAB instead of SLUB.
Not much use I'm afraid.
This is all I get in the log
[ 3161.300073] =============================================================================
[ 3161.300147] BUG kmalloc-512: Freechain corrupt
The qemu process is then frozen, unkillable but reported in state "R"
13881 ? R 3:27 /usr/bin/qemu -S -M pc-0.13 -enable-kvm -m 1024 -smp 2,sockets=2,cores=1,threads=1 -nam
The machine then progressively dies until it's frozen solid with no further error messages.
I stupidly forgot to do an alt-sysrq-t prior to doing an alt-sysrq-b, but at least it responded to that.
On the bright side I can reproduce it at will.