On Fri, 2010-10-01 at 15:57 +1000, Benjamin Herrenschmidt wrote: > I actually just reproduced the lockup on x86_64 with 4 CPUs using > mmapstress01 -p 5 -t 1.3 -f 4096. > > So the trick is to mount /tmp over nfs (so that the mmap'ed file ends up > on nfs) and run mmapstress01 as above. Then try ctrl-C it. > > I'll do a bz for that one. > > I'm now going to try going back kernel versions to see if I can also > reproduce the SIGBUS or other timing issues. So on x86 I didn't get a backtrace, but the VGA console was still responsive somewhat, and I saw mmapstress01 there using 100% CPU and unresponsive to kill -9 (stays in state R). Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
