Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes: > 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. ÂPerhaps 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()) Interesting. I just got this with DEBUG_PAGEALLOC It looks like something in DEBUG_PAGEALLOC is interfering with taking a successful crashdump. Given how many network namespaces I create and destroy this might be a code path I exercise more than most people. BUG: unable to handle kernel paging request at ffff8801adf8d760 IP: [<ffffffff8140c7ca>] unregister_netdevice_queue+0x3a/0xb0 Oops: 0002 [#1] SMP DEBUG_PAGEALLOC last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map Stack: Call Trace: Code: 24 08 48 89 fb 49 89 f4 e8 f4 c8 00 00 85 c0 74 6d 4d 85 e4 74 3b 48 8b 93 a0 00 00 00 48 8b 83 a8 00 00 00 48 8d bb a0 00 00 00 <48> 89 42 08 48 89 10 4c 89 e2 49 8b 74 24 08 e8 32 75 e7 ff 48 RIP [<ffffffff8140c7ca>] unregister_netdevice_queue+0x3a/0xb0 CR2: ffff8801adf8d760 Eric -- 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