On 05/06/2013 03:55 PM, CAI Qian wrote:
[ 0.928031] ------------[ cut here ]------------ [ 0.934231] kernel BUG at include/linux/gfp.h:323! [ 0.940581] invalid opcode: 0000 [#1] SMP [ 0.945982] Modules linked in: [ 0.950048] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.9.0+ #1 [ 0.957877] Hardware name: ProLiant BL465c G7, BIOS A19 12/10/2011 [ 1.066325] task: ffff880234608000 ti: ffff880234602000 task.ti: ffff880234602000 [ 1.076603] RIP: 0010:[<ffffffff8117495d>] [<ffffffff8117495d>] new_slab+0x2ad/0x340 [ 1.087043] RSP: 0000:ffff880234603bf8 EFLAGS: 00010246 [ 1.094067] RAX: 0000000000000000 RBX: ffff880237404b40 RCX: 00000000000000d0 [ 1.103565] RDX: 0000000000000001 RSI: 0000000000000003 RDI: 00000000002052d0 [ 1.113071] RBP: ffff880234603c28 R08: 0000000000000000 R09: 0000000000000001 [ 1.122461] R10: 0000000000000001 R11: ffffffff812e3aa8 R12: 0000000000000001 [ 1.132025] R13: ffff8802378161c0 R14: 0000000000030027 R15: 00000000000040d0 [ 1.141532] FS: 0000000000000000(0000) GS:ffff880237800000(0000) knlGS:0000000000000000 [ 1.152306] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 1.160004] CR2: ffff88043fdff000 CR3: 00000000018d5000 CR4: 00000000000007f0 [ 1.169519] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1.179009] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 1.188383] Stack: [ 1.191088] ffff880234603c28 0000000000000001 00000000000000d0 ffff8802378161c0 [ 1.200825] ffff880237404b40 ffff880237404b40 ffff880234603d28 ffffffff815edba1 [ 1.21ea0008dd0300 ffff880237816140 0000000000000000 ffff88023740e1c0 [ 1.519233] Call Trace: [ 1.522392] [<ffffffff815edba1>] __slab_alloc+0x330/0x4f2 [ 1.529758] [<ffffffff812e3aa8>] ? alloc_cpumask_var_node+0x28/0x90 [ 1.538126] [<ffffffff81a0bd6e>] ? wq_numa_init+0xc8/0x1be [ 1.545642] [<ffffffff81174b25>] kmem_cache_alloc_node_trace+0xa5/0x200 [ 1.554480] [<ffffffff812e8>] ? alloc_cpumask_var_node+0x28/0x90 [ 1.662913] [<ffffffff812e3aa8>] alloc_cpumask_var_node+0x28/0x90 [ 1.671224] [<ffffffff81a0bdb3>] wq_numa_init+0x10d/0x1be [ 1.678483] [<ffffffff81a0be64>] ? wq_numa_init+0x1be/0x1be [ 1.686085] [<ffffffff81a0bec8>] init_workqueues+0x64/0x341 [ 1.693537] [<ffffffff8107b687>] ? smpboot_register_percpu_thread+0xc7/0xf0 [ 1.702970] [<ffffffff81a0ac4a>] ? ftrace_define_fields_softirq+0x32/0x32 [ 1.712039] [<ffffffff81a0be64>] ? wq_numa_init+0x1be/0x1be [ 1.719683] [<ffffffff810002ea>] do_one_initcall+0xea/0x1a0 [ 1.727162] [<ffffffff819f1f31>] kernel_init_freeable+0xb7/0x1ec [ 1.735316] [<ffffffff815d50d0>] ? rest_init+0x80/0x80 [ 1.742121] [<ffffffff815d50de>] kernel_init+0xe/0xf0 [ 1.748950] [<ffffffff815ff89c>] ret_from_fork+0x7c/0xb0 [ 1.756443] [<ffffffff815d50d0>] ? rest_init+0x80/0x80 [ 1.763250] Code: 45 84 ac 00 00 00 f0 41 80 4d 00 40 e9 f6 fe ff ff 66 0f 1f 84 00 00 00 00 00 e8 eb 4b ff ff 49 89 c5 e9 05 fe ff ff <0f> 0b 4c 8b 73 38 44 89 ff 81 cf 00 00 20 00 4c 89 f6 48 c1 ee [ 2.187072] RIP [<ffffffff8117495d>] new_slab+0x2ad/0x340 [ 2.194238] RSP <ffff880234603bf8> [ 2.198982] ---[ end trace 43bf8bb0334e5135 ]--- [ 2.205097] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
This is always reproducible on two machines. Each of the two has 4 possible numa nodes and 2 actually online ones.
wq_numa_init is new addition in 3.10-rc1. I suspect that for_each_node() in wq_numa_init has accessed offline numa nodes.
Two more tests show: - Once booted with numa=off, this panic no longer happens. - After sed -i s/for_each_node/for_each_online_node/ kernel/workqueue.c, panic no longer happens. Lingzhu Xiang -- 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>