On Mon, Jan 31, 2011 at 02:40:16PM -0800, Dave Hansen wrote: > Still not a very good data point, but I ran a heavy swap load for an > hour or so without reproducing this. But, it happened again after I > enabled transparent huge pages. I managed to get a sysrq-t dump out of > it: > > http://sr71.net/~dave/ibm/2.6.38-rc2-hang-0.txt > > khugepaged is one of the three running tasks. Note, I set both its > sleep timeouts to zero to stress it out a bit. sysrq+l? sysrq+t doesn't provide interesting info for running tasks. > I'll keep trying to reproduce without THP. BTW, do you have prove locking enabled? With recent git I get a deadlock inside _raw_spin_unlock_irq with prove locking enabled and it goes away when I disable it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>