On Mon, 6 Oct 2014, Vince Weaver wrote:
> [ 843.700042] general protection fault: 0000 [#1] SMP
> ...
> [ 843.704001] task: ffff88011a874000 ti: ffff8800bc0ec000 task.ti:
> ffff8800bc0ec000
> [ 843.704001] RIP: 0010:[<ffffffff810cd913>] [<ffffffff810cd913>]
> perf_event_context_sched_in.isra.75+0x1f/0x90
For what it's worth, this is
kernel/events/core.c:2646
if (atomic_read(&__get_cpu_var(perf_cgroup_events)))
perf_cgroup_sched_in(prev, task);
ffffffff810cd902: 53 push %rbx
ffffffff810cd903: 48 8b 07 mov (%rdi),%rax
ffffffff810cd906: 48 8b 58 40 mov 0x40(%rax),%rbx
ffffffff810cd90a: 65 48 03 1c 25 08 ce add %gs:0xce08,%rbx
ffffffff810cd911: 00 00
ffffffff810cd913: 48 39 bb d8 00 00 00 cmp %rdi,0xd8(%rbx)
ffffffff810cd91a: 74 63 je ffffffff810cd97f
<perf_event_context_sched_in.isra.75+0x8b>
> [ 843.704001] RSP: 0018:ffff8800bc0efd50 EFLAGS: 00010087
> [ 843.704001] RAX: ffffea0002ba2d68 RBX: ffff1001e742c000 RCX:
> 000000000000038f
> [ 843.704001] RDX: ffff88011fc95b30 RSI: ffff880037d0eb00 RDI:
> ffff880037d0e700
> [ 843.704001] RBP: ffff8800bc0efd60 R08: ffff8800bc0ec000 R09:
> 000000000000baff
> [ 843.704001] R10: 0000000000000006 R11: 00000000000009bc R12:
> ffff880037d0e700
> [ 843.704001] R13: ffff8800c944f400 R14: 0000000000000001 R15:
> ffff88011b340800
> [ 843.704001] FS: 00007ffc76c17700(0000) GS:ffff88011fc80000(0000)
> knlGS:0000000000000000
> [ 843.704001] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [ 843.704001] DR0: 0000000001c7b000 DR1: 0000000000000000 DR2:
> 0000000001c7b000
> [ 843.704001] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
> 0000000000000600
> [ 843.704001] Stack:
> [ 843.704001] ffff88011a874000 ffff88011b340800 ffff8800bc0efd90
> ffffffff810cd9bb
> [ 843.704001] ffff88011a8744e8 ffff88011b340800 ffff88011fc929c0
> ffff8800c944f400
> [ 843.704001] ffff8800bc0efdc0 ffffffff8105ae62 ffff88011fc929c0
> ffff8800c944f400
> [ 843.704001] Call Trace:
> [ 843.704001] [<ffffffff810cd9bb>] __perf_event_task_sched_in+0x37/0xf4
> [ 843.704001] [<ffffffff8105ae62>] finish_task_switch+0x9b/0xa6
> [ 843.704001] [<ffffffff815209c1>] __schedule+0x309/0x4a5
> [ 843.704001] [<ffffffff81520df3>] _cond_resched+0x28/0x3b
> [ 843.704001] [<ffffffff815217b5>] mutex_lock+0x12/0x2f
> [ 843.704001] [<ffffffff810cb9bb>] find_get_context+0xfc/0x170
> [ 843.704001] [<ffffffff810cff77>] SYSC_perf_event_open+0x47b/0x7f5
> [ 843.704001] [<ffffffff810d0651>] SyS_perf_event_open+0xe/0x10
> [ 843.704001] [<ffffffff81523ad1>] tracesys+0xd4/0xd9
> [ 843.704001] Code: 89 e7 e8 65 fe ff ff 5b 41 5c 5d c3 e8 c7 7e 45 00 55 48
> 89 e5 41 54 49 89 fc 53 48 8b 07 48 8b 58 40 65 48 03 1c 25 08 ce 00 00 <48>
> 39 bb d8 00 00 00 74 63 48 89 fe 48 89 df e8 f0 b4 ff ff 49
> [ 843.704001] RIP [<ffffffff810cd913>]
> perf_event_context_sched_in.isra.75+0x1f/0x90
> [ 843.704001] RSP <ffff8800bc0efd50>
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