notfound 584314 linux-2.6/2.6.32-32 notfixed 584314 linux-2.6/2.6.38-3 found 584314 linux-2.6/2.6.32-30 fixed 584314 linux-2.6/2.6.38-5 quit
Andreas Berger wrote: > in linux-image-2.6.32-5-686, version 2.6.32-30, the bug was still there, > in linux-image-2.6.38-2-686, version 2.6.38-5, the bug was no longer there, > > in between the two, i don't know, but if it helps, i can narrow it down as > soon as i get home to a spare hard drive. Sure, it would help to narrow the search for the fix (but see below to save some time). > On Thursday, July 28, 2011 04:19:39 Jonathan Nieder wrote: >> - could you send a photo of the screen during the oops, so we can read >> the backtrace? > > i typed it off the screen and included it in my previous mail here: > http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=22;bug=584314 > > is that not what you mean? Unfortunately what you typed doesn't include the call trace (or maybe there was none). It does include the code, which when passed through scripts/decodecode looks like this: | kernel:[ 496.263433] Code: 04 01 00 00 00 66 83 7c 24 28 00 79 37 89 f5 31 db eb 2b ba 03 00 00 00 89 e8 e8 ee 73 fa ff b9 00 04 00 00 89 04 24 89 c7 31 c0 <f3> ab 8b 04 24 ba 03 00 00 00 43 83 c5 20 e8 20 72 fa ff 3b 5c [...] | 11: eb 2b jmp 0x3e | 13: ba 03 00 00 00 mov $0x3,%edx | 18: 89 e8 mov %ebp,%eax | 1a: e8 ee 73 fa ff callq 0xfffffffffffa740d | 1f: b9 00 04 00 00 mov $0x400,%ecx | 24: 89 04 24 mov %eax,(%rsp) | 27: 89 c7 mov %eax,%edi | 29: 31 c0 xor %eax,%eax | 2b:* f3 ab rep stos %eax,%es <-- trapping instruction:(%rdi) | 2d: 8b 04 24 mov (%rsp),%eax Building mm/page_alloc.s and comparing, we see that this is in "clear_highpage"; the function call starting on line 13 is to kmap_atomic and the trapping rep stos is memset(page, 0, PAGE_SIZE). Unwinding a little: clear_highpage is called by prep_zero_page, which is called by prep_new_page, which is called by buffered_rmqueue, which is called by get_page_from_freelist for each potentially free page. I suspect memory corruption. Maybe v2.6.37-rc5~3^2 (PM / Hibernate: Fix memory corruption related to swap, 2010-12-03) fixes it. Could you test 2.6.37-rc5 and 2.6.37-rc4? Thanks, Jonathan -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110830031046.gc17...@elie.gateway.2wire.net
