(dear -mm: please see http://thread.gmane.org/gmane.comp.file-systems.ext4/34665 for the origins of this oops) On 10/04/12 19:34, Theodore Ts'o wrote: > On Thu, Oct 04, 2012 at 05:31:41PM +0200, Holger Hoffstätte wrote: > >> So armed with multiple running shells I finally managed to save the dmesg >> to NFS. It doesn't get any more complete than this and again shows the >> ext4 stacktrace from before. So maybe it really is generic kmem corruption >> and ext4 looking at symlinks/inodes is just the victim. > > That certainly seems to be the case. As near as I can tell from the Good to know. Unfortunately I'm still at a loss why apparently only gthumb can trigger this; I had not noticed any other problems with 3.6.0 before that (ran it for half a day, desktop use). > So it's very likely that the crash in __kmalloc() is probably caused > by the internal slab/slub data structures getting scrambled. For giggles I rebuilt with SLAB instead of SLUB, but no luck; same segfault and delayed oopsie. I also collected an strace, but I cannot really see anything out of the ordinary - it starts, loads things, traverses directories and then segfaults. I've put the earlier full dmesg and the strace into http://hoho.dyndns.org/~holger/ext4-oops-3.6.0/ - maybe it helps someone else. Any suggestions for memory debugging? I saw several options in the kernel config (under "Kernel Hacking") but was not sure what to enable. Holger -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>