Hi Peter and Ingo,
2012/11/5 Fengguang Wu <fengguang...@intel.com>: > Greetings, > > I got a rather hard to reproduce/bisect oops when doing CPU hotplug > testing: > > [ 480.327742] CPU0 attaching NULL sched-domain. > [ 480.329408] ------------[ cut here ]------------ > [ 480.330355] kernel BUG at /c/kernel-tests/src/stable/kernel/sched/rt.c:687! > [ 480.330355] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC > [ 480.330355] Modules linked in: > [ 480.330355] CPU 1 > [ 480.330355] Pid: 3007, comm: 01-cpu-hotplug Not tainted > 3.7.0-rc3-00017-g1a303f5 #2502 Bochs Bochs > [ 480.330355] RIP: 0010:[<ffffffff810a679b>] [<ffffffff810a679b>] > __disable_runtime+0x188/0x1c2 > [ 480.330355] RSP: 0018:ffff8800199cbad8 EFLAGS: 00010082 > [ 480.330355] RAX: ffffffff810a6796 RBX: ffff88001f3d3b40 RCX: > 0000000000000005 > [ 480.330355] RDX: ffffffff81a5ff61 RSI: 0000000000000092 RDI: > 0000000000000046 > [ 480.330355] RBP: ffff8800199cbb38 R08: 00000000000006fc R09: > 000000000000000c > [ 480.330355] R10: 000000000000000c R11: ffff8800168cac88 R12: > 0000000000000040 > [ 480.330355] R13: ffff88001f3d4358 R14: 00000000001d3b40 R15: > fffffffffd050f80 > [ 480.330355] FS: 00007f2f660d9700(0000) GS:ffff88001f400000(0000) > knlGS:0000000000000000 > [ 480.330355] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [ 480.330355] CR2: 00007f2f65aab830 CR3: 00000000184a1000 CR4: > 00000000000006e0 > [ 480.330355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [ 480.330355] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [ 480.330355] Process 01-cpu-hotplug (pid: 3007, threadinfo > ffff8800199ca000, task ffff8800168ca3e0) > [ 480.330355] Stack: > [ 480.330355] ffff8800199cbb58 ffff8800168cac18 ffff88001f3d3b58 > ffff880018544a58 > [ 480.330355] ffff88001f3d3cb8 0000000000000040 ffff8800199cbb58 > ffff88001f3d3b40 > [ 480.330355] ffffffff81a931d0 ffffffff824086b0 ffff880018544a60 > 00000000ffffffff > [ 480.330355] Call Trace: > [ 480.330355] [<ffffffff810a6d02>] rq_offline_rt+0x74/0x96 > [ 480.330355] [<ffffffff8109a724>] set_rq_offline.part.37+0x2a/0x81 > [ 480.330355] [<ffffffff8109be81>] rq_attach_root+0x85/0x193 > [ 480.330355] [<ffffffff8109c10f>] cpu_attach_domain+0x180/0x228 > [ 480.330355] [<ffffffff810a07d0>] partition_sched_domains+0x157/0x350 > [ 480.330355] [<ffffffff810a0782>] ? partition_sched_domains+0x109/0x350 > [ 480.330355] [<ffffffff810c1a18>] ? trace_hardirqs_on_caller+0x125/0x181 > [ 480.330355] [<ffffffff810da300>] cpuset_update_active_cpus+0x10c/0x117 > [ 480.330355] [<ffffffff8108688a>] ? keep_working+0x2d/0x2d > [ 480.330355] [<ffffffff810a0a3b>] cpuset_cpu_inactive+0x20/0x3f > [ 480.330355] [<ffffffff81a63c2a>] notifier_call_chain+0x65/0x95 > [ 480.330355] [<ffffffff81094e6e>] __raw_notifier_call_chain+0xe/0x10 > [ 480.330355] [<ffffffff8106f94c>] __cpu_notify+0x20/0x37 > [ 480.330355] [<ffffffff81a06b24>] _cpu_down+0xa4/0x26d > [ 480.330355] [<ffffffff81a06d15>] cpu_down+0x28/0x3c > [ 480.330355] [<ffffffff81a09687>] store_online+0x3e/0x8f > [ 480.330355] [<ffffffff8156ccc4>] dev_attr_store+0x18/0x24 > [ 480.330355] [<ffffffff811bf7e4>] sysfs_write_file+0xee/0x126 > [ 480.330355] [<ffffffff811662ad>] vfs_write+0xa6/0x152 > [ 480.330355] [<ffffffff81166574>] sys_write+0x4c/0x80 > [ 480.330355] [<ffffffff81a678c0>] tracesys+0xdd/0xe2 > [ 480.330355] Code: 00 00 00 49 63 d4 e8 e1 b8 39 00 3b 05 73 97 ff 00 48 89 > 45 c8 41 89 c4 0f 8c 2c ff ff ff 4c 89 ef e8 72 8d 9b 00 4d 85 ff 74 02 <0f> > 0b 48 c7 83 10 08 00 00 ff ff ff ff 4c 89 ef c7 83 00 08 00 > [ 480.330355] RIP [<ffffffff810a679b>] __disable_runtime+0x188/0x1c2 > [ 480.330355] RSP <ffff8800199cbad8> > > Thanks, > Fengguang I have met the same issue on Marvell SOC. Would you please take a look? Thanks. Best Regards, Neil Zhang -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
