Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes: > On Thu, Feb 17, 2011 at 8:40 PM, David Miller <davem@xxxxxxxxxxxxx> wrote: >> >> I looked at Eric's (and your) patch before I wrote my reply :-) > > It was Eric Biederman that was missing from some of the discussion. > Too many Eric's, and two separate threads for the same bug that I'm > involved in. I have a kernel with both your patches running and testing now. Before I got the new kernel built I saw a second of these in the same place, followed by a boat load of soft lockups. > BUG: unable to handle kernel paging request at ffff88018f30b760 > 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: ffff88018f30b760 > BUG: soft lockup - CPU#0 stuck for 67s! [as:4762] > Stack: > Call Trace: > Code: c9 c3 0f 1f 80 00 00 00 00 48 8b 05 21 f9 a4 00 81 c6 f0 00 00 00 ff 90 e0 00 00 00 48 83 7b 08 00 74 a7 66 0f 1f 44 00 00 f3 90 <49> 83 bc 24 48 c4 c1 81 00 75 f3 eb 92 66 0f 1f 84 00 00 00 00 > BUG: soft lockup - CPU#4 stuck for 67s! [cc1plus:23768] > Stack: > Call Trace: > Code: c9 c3 0f 1f 80 00 00 00 00 48 8b 05 21 f9 a4 00 81 c6 f0 00 00 00 ff 90 e0 00 00 00 48 83 7b 08 00 74 a7 66 0f 1f 44 00 00 f3 90 <49> 83 bc 24 48 c4 c1 81 00 75 f3 eb 92 66 0f 1f 84 00 00 00 00 > BUG: spinlock lockup on CPU#6, kworker/u:0/23281, ffff880154f7d650 > BUG: spinlock lockup on CPU#3, configure/4328, ffffffff81a13740 > Stack: > Call Trace: > Code: c3 90 90 90 90 55 89 f8 48 89 e5 e6 70 e4 71 c9 c3 0f 1f 40 00 55 89 f0 48 89 e5 e6 70 89 f8 e6 71 c9 c3 66 90 55 48 89 e5 0f 31 <89> c1 48 89 d0 48 c1 e0 20 89 c9 48 09 c8 c9 c3 66 2e 0f 1f 84 > Stack: > Call Trace: > Code: e8 b6 0f 27 00 c9 c3 90 90 90 90 55 89 f8 48 89 e5 e6 70 e4 71 c9 c3 0f 1f 40 00 55 89 f0 48 89 e5 e6 70 89 f8 e6 71 c9 c3 66 90 <55> 48 89 e5 0f 31 89 c1 48 89 d0 48 c1 e0 20 89 c9 48 09 c8 c9 > Stack: > Call Trace: > Code: c3 90 90 90 90 55 89 f8 48 89 e5 e6 70 e4 71 c9 c3 0f 1f 40 00 55 89 f0 48 89 e5 e6 70 89 f8 e6 71 c9 c3 66 90 55 48 89 e5 0f 31 <89> c1 48 89 d0 48 c1 e0 20 89 c9 48 09 c8 c9 c3 66 2e 0f 1f 84 > Stack: > Call Trace: > Code: c8 c9 c3 66 0f 1f 44 00 00 55 48 89 e5 ff 15 b6 e2 7b 00 c9 c3 0f 1f 40 00 55 48 8d 04 bd 00 00 00 00 65 48 8b 14 25 98 1e 01 00 <48> 8d 0c 12 48 c1 e2 06 48 89 e5 48 29 ca f7 e2 48 8d 7a 01 ff > Stack: > Call Trace: > Code: 0f 1f 80 00 00 00 00 f3 90 65 8b 1c 25 f0 c4 00 00 41 39 dd 75 23 66 66 90 0f ae e8 e8 96 ef d8 ff 66 90 48 98 48 89 c2 4c 29 e2 <4c> 39 f2 72 d7 5b 41 5c 41 5d 41 5e c9 c3 49 29 c4 4d 01 e6 66 > Stack: > Call Trace: > Code: c3 90 90 90 90 55 89 f8 48 89 e5 e6 70 e4 71 c9 c3 0f 1f 40 00 55 89 f0 48 89 e5 e6 70 89 f8 e6 71 c9 c3 66 90 55 48 89 e5 0f 31 <89> c1 48 : And then a little later when I was rebooting after installing the kernel with the bug fixes I got another bug. I suspect this is probably unrelated, as I have had some indication that mavlan has had problems for a while. > ============================================================================= > BUG kmalloc-4096: Poison overwritten > ----------------------------------------------------------------------------- > > INFO: 0xffff880297f8b488-0xffff880297f8b48f. First byte 0x0 instead of 0x6b > INFO: Allocated in macvlan_common_newlink+0x114/0x390 [macvlan] age=1890967 cpu=1 pid=3099 > INFO: Freed in macvlan_port_rcu_free+0x10/0x20 [macvlan] age=133 cpu=6 pid=0 > Sending all procINFO: Slab 0xffffea000913e5c0 objects=7 used=0 fp=0xffff880297f89048 flags=0x40000000004080 > INFO: Object 0xffff880297f8b0d8 @offset=12504 fp=0xffff880297f8a090 > esses the KILL s > Bytes b4 0xffff880297f8b0c8: ignal... 31 27 1d 00 01 00 00 00 5a 5a 5a 5a 5a 5a 5a 5a 1'......ZZZZZZZZ > Object 0xffff880297f8b0d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b0e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b0f8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b108: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b118: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b128: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b138: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b148: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b158: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b168: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b178: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b188: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b198: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b1a8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b1b8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b1c8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b1d8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b1e8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b1f8: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b208: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b218: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b228: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b238: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b248: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b258: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b268: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk > Object 0xffff880297f8b278: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk .... 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