Messages in this thread | | | Date | Wed, 23 Jul 2008 22:28:21 +0200 | From | "Vegard Nossum" <> | Subject | Re: recent -git: BUG in free_thread_xstate |
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On Wed, Jul 23, 2008 at 10:23 PM, Vegard Nossum <vegard.nossum@gmail.com> wrote: > My test is basically stressing the network and running CPU hotplug at > the same time.
FWIW, a third run gives us this additional clue before going down with the first error I posted in this thread:
============================================================================= BUG task_struct: Poison overwritten ----------------------------------------------------------------------------- INFO: 0xf3d00000-0xf3d0006b. First byte 0x1 instead of 0x6b INFO: Allocated in copy_process+0x68/0x1130 age=4 cpu=0 pid=4338 INFO: Freed in free_task+0x2c/0x30 age=2 cpu=0 pid=4 INFO: Slab 0xc1c25c00 objects=8 used=3 fp=0xf3d00000 flags=0x400020c3 INFO: Object 0xf3d00000 @offset=0 fp=0xf3d03fc0 Object 0xf3d00000: 01 40 66 00 00 16 ec ee ad b9 00 1c 26 8a 70 f8 .@f...<EC><U+EB79>..&.p<F8> Object 0xf3d00010: 08 00 45 00 00 54 00 00 40 00 40 01 b7 e8 c0 a8 ..E..T..@.@.<B7><E8><C0><A8> Object 0xf3d00020: 00 c4 c0 a8 00 ac 08 00 6e c0 df 24 55 33 75 af .<C4><C0><A8>.<AC>..n<C0><DF>$U3u<AF> Object 0xf3d00030: 87 48 69 ec 03 00 08 09 0a 0b 0c 0d 0e 0f 10 11 .Hi<EC>............ Object 0xf3d00040: 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 ...............! Object 0xf3d00050: 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 "#$%&'()*+,-./01 Object 0xf3d00060: 32 33 34 35 36 37 89 e0 c8 4a fb e0 6b 6b 6b 6b 234567.<E0><C8>J<FB><E0>kkkk Object 0xf3d00070: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk [...] Object 0xf3d00fb0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk<A5> Redzone 0xf3d00fc0: bb bb bb bb <BB><BB><BB><BB> Padding 0xf3d00fe8: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ Pid: 3995, comm: bash Not tainted 2.6.26-06077-gc010b2f #100 [<c01a0363>] print_trailer+0xd3/0x120 [<c01a0485>] check_bytes_and_report+0xd5/0x100 [<c01a06b1>] check_object+0x1b1/0x200 [<c01a1f90>] __slab_alloc+0x510/0x5f0 [<c01a2449>] kmem_cache_alloc+0xd9/0xe0 [<c0135348>] ? copy_process+0x68/0x1130 [<c0135348>] ? copy_process+0x68/0x1130 [<c0135348>] copy_process+0x68/0x1130 [<c02a59b7>] ? _raw_spin_trylock+0x17/0x50 [<c013646d>] do_fork+0x5d/0x2b0 [<c015bd5b>] ? trace_hardirqs_on+0xb/0x10 [<c0297240>] ? copy_to_user+0x40/0x130 [<c01024af>] sys_clone+0x2f/0x40 [<c010404f>] sysenter_past_esp+0x78/0xc5 ======================= FIX task_struct: Restoring 0xf3d00000-0xf3d0006b=0x6b FIX task_struct: Marking all objects used
Vegard
-- "The animistic metaphor of the bug that maliciously sneaked in while the programmer was not looking is intellectually dishonest as it disguises that the error is the programmer's own creation." -- E. W. Dijkstra, EWD1036
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