[ 34.700861] ------------[ cut here ]------------
[ 34.701372] WARNING: CPU: 0 PID: 1457 at kernel/events/core.c:890 add_event_to_ctx+0x253/0x270()
[ 34.702515] CPU: 0 PID: 1457 Comm: trinity-main Not tainted 3.19.0-rc4-gd26bb7f #2
[ 34.702931] 00000000 00000000 c0911e2c cd8a61df c0911e48 cd052cfa 0000037a cd0d32f3
[ 34.702931] c0c206d0 c0c20590 d3c9e0a0 c0911e58 cd052dd4 00000009 00000000 c0911e78
[ 34.702931] cd0d32f3 d3c9e214 00000000 00000000 c0c20598 00000246 c0c50990 c0911e90
[ 34.702931] Call Trace:
[ 34.702931] [] dump_stack+0x16/0x18
[ 34.702931] [] warn_slowpath_common+0x6a/0xa0
[ 34.702931] [] ? add_event_to_ctx+0x253/0x270
[ 34.702931] [] warn_slowpath_null+0x14/0x20
[ 34.702931] [] add_event_to_ctx+0x253/0x270
[ 34.702931] [] inherit_event+0xef/0x240
[ 34.702931] [] inherit_group+0x18/0x70
[ 34.702931] [] ? alloc_perf_context+0x24/0x50
[ 34.702931] [] perf_event_init_task+0x117/0x310
[ 34.702931] [] copy_process+0x477/0x14f0
[ 34.702931] [] do_fork+0xb3/0x430
[ 34.702931] [] ? do_setitimer+0x13d/0x220
[ 34.702931] [] ? alarm_setitimer+0x3a/0x60
[ 34.702931] [] SyS_clone+0x1b/0x20
[ 34.702931] [] syscall_call+0x7/0x7
[ 34.702931] [] ? xen_chk_extra_mem+0x10/0x70
[ 34.702931] ---[ end trace 19d6cac21f26a758 ]---