IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready ------------[ cut here ]------------ WARNING: CPU: 0 PID: 29962 at kernel/events/core.c:1655 perf_group_attach kernel/events/core.c:1655 [inline] WARNING: CPU: 0 PID: 29962 at kernel/events/core.c:1655 add_event_to_ctx+0x8f3/0xc30 kernel/events/core.c:2229 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 29962 Comm: kworker/0:6 Not tainted 4.9.191+ #0 Workqueue: events_power_efficient gc_worker ffff8801db607d38 ffffffff81b67171 0000000000000000 ffffffff82a3b340 00000000ffffffff 0000000000000000 0000000000000009 ffff8801db607e18 ffffffff813ff0ca 0000000041b58ab3 ffffffff82e32ec5 ffffffff813feef1 Call Trace: [<0000000089eb9ed0>] __dump_stack lib/dump_stack.c:15 [inline] [<0000000089eb9ed0>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<00000000cd0ce956>] panic+0x1d9/0x3bd kernel/panic.c:180 [<00000000ec4cb947>] __warn.cold+0x2f/0x2f kernel/panic.c:546 [<00000000be3ac427>] warn_slowpath_null+0x2d/0x40 kernel/panic.c:589 [<00000000e78f763a>] perf_group_attach kernel/events/core.c:1655 [inline] [<00000000e78f763a>] add_event_to_ctx+0x8f3/0xc30 kernel/events/core.c:2229 [<000000004132bbb2>] __perf_install_in_context+0x282/0x330 kernel/events/core.c:2320 [<000000006719ae36>] remote_function kernel/events/core.c:83 [inline] [<000000006719ae36>] remote_function+0x11e/0x1a0 kernel/events/core.c:63 [<0000000016dfdd8b>] flush_smp_call_function_queue+0xa7/0x360 kernel/smp.c:231 [<00000000d2dae330>] generic_smp_call_function_single_interrupt+0x13/0x30 kernel/smp.c:180 [<000000004cd4007a>] __smp_call_function_single_interrupt arch/x86/kernel/smp.c:320 [inline] [<000000004cd4007a>] smp_trace_call_function_single_interrupt+0xb4/0x510 arch/x86/kernel/smp.c:337 [<00000000c6c788ea>] trace_call_function_single_interrupt+0xa5/0xb0 arch/x86/entry/entry_64.S:674 [<00000000794e86f9>] rcu_read_lock include/linux/rcupdate.h:874 [inline] [<00000000794e86f9>] gc_worker+0xc6/0x600 net/netfilter/nf_conntrack_core.c:1020 [<0000000055080cbb>] process_one_work+0x88b/0x1600 kernel/workqueue.c:2114 [<000000009d32f45b>] worker_thread+0x5df/0x11d0 kernel/workqueue.c:2251 [<00000000f1ba5ead>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000051eb1d2>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Kernel Offset: disabled Rebooting in 86400 seconds..