Matthias Lederhofer wrote: > I think I found a bug introduced in v2.6.18-g23541d2 (git-bisect). > The computer has a dual core amd64 with 1GB ram and 3GB swap space, > 64 bit kernel and 32 bit userland. [23541d2] dm crypt: move io to workqueue So this patch is the source of problems ? > What I did: > - run the mprime 'torture test' with the memory option set to 1500MB > (ftp://mersenne.org/gimps/mprime235.tar.gz, I ran > echo -e '15\n\n1500\n1500\n\n\n\n17\n\n6\n' | ./mprime) > - mount a tmpfs with 2GB and write to it (stops at 1.0-1.1GB) > What happened: > With mprime normal keyboard input was ignored totally. The machine > still responds to ping/sysrq but killing all processes with sysrq does > not help. Sometimes with tmpfs I was able to type, but ^C did not > work and I was not able to do anything (e.g. get a new shell, start a > program etc.). > > The swap space has to be on a dm-crypt and smp has to be enabled, > without this the bug did not occur. Just ask if you need any other > information about the system, output from sysrq debug commands or > anything else. Please, if you can send task list when system stops responding (sysrq + t) and output of dmsetup table dmsetup info -c Are there any messages in syslog related to this hang ? > > I found that enabling this options from 'Kernel hacking' helps, even > though it once froze when I tried to quit mprime. >> CONFIG_DEBUG_KERNEL=y >> CONFIG_DEBUG_PREEMPT=y >> CONFIG_DEBUG_SPINLOCK=y >> CONFIG_DEBUG_MUTEXES=y >> CONFIG_DEBUG_RWSEMS=y >> CONFIG_DEBUG_LOCK_ALLOC=y >> CONFIG_PROVE_LOCKING=y >> CONFIG_LOCKDEP=y >> CONFIG_DEBUG_LOCKDEP=y >> CONFIG_TRACE_IRQFLAGS=y >> CONFIG_STACKTRACE=y >> CONFIG_DEBUG_VM=y > While running mprime with this options I got this warning: >> warning: many lost ticks. >> Your time source seems to be instable or some driver is hogging interupts >> rip xor_128+0x2/0x20 Not sure if this can be related... did you try compile it without config_preempt ? (and dynamic overclocking in BIOS is disabled ?) Milan > > kernel boot output: > Linux version 2.6.18-g23541d2d (matled@foo) (gcc version 4.1.2 20061028 (prerelease) (Debian 4.1.1-19)) #1 SMP PREEMPT Sun Nov 26 21:20:27 CET 2006 > Command line: root=/dev/md10 ro panic=20 console=tty0 console=ttyS0,115200 > BIOS-provided physical RAM map: ... --------------------------------------------------------------------- dm-crypt mailing list - http://www.saout.de/misc/dm-crypt/ To unsubscribe, e-mail: dm-crypt-unsubscribe@xxxxxxxx For additional commands, e-mail: dm-crypt-help@xxxxxxxx
