On Fri 18-02-11 13:29:38, Michal Hocko wrote: > On Thu 17-02-11 11:11:51, Linus Torvalds wrote: > > On Thu, Feb 17, 2011 at 10:57 AM, Eric W. Biederman > > <ebiederm@xxxxxxxxxxxx> wrote: > > > > > > fedora 14 > > > ext4 on all filesystems > > > > Your dmesg snippets had ext3 mentioned, though: > > > > <6>EXT3-fs (sda1): recovery required on readonly filesystem > > <6>EXT3-fs (sda1): write access will be enabled during recovery > > <6>EXT3-fs: barriers not enabled > > .. > > <6>EXT3-fs (sda1): recovery complete > > <6>EXT3-fs (sda1): mounted filesystem with ordered data mode > > <6>dracut: Mounted root filesystem /dev/sda1 > > > > not that I see that it should matter, but there's been some bigger > > ext3 changes too (like the batched discard). > > > > I don't really think ext3 is the issue, though. > > > > > I was about to say this happens with DEBUG_PAGEALLOC enabled but it > > > appears that options keeps eluding my fingers when I have a few minutes > > > to play with it. ?Perhaps this time will be the charm. > > > > Please do. You seem to be much better at triggering it than anybody > > else. And do the DEBUG_LIST and DEBUG_SLUB_ON things too (even if the > > DEBUG_LIST thing won't catch list_move()) > > I was able to reproduce (now it fired into dcopserver) with the > following simple test case: > > while true > do > rmmod iwl3945 iwlcore mac80211 cfg80211 > sleep 2 > modprobe iwl3945 > done > > Now, I will try with the 2 patches patches in this thread. I will also > turn on DEBUG_LIST and DEBUG_PAGEALLOC. I am not able to reproduce with those 2 patches applied. -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- 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 internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>