WARNING: CPU: 0 PID: 45 at kernel/events/core.c:1835 perf_group_attach+0x3fd/0x4d0 kernel/events/core.c:1835 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 45 Comm: kworker/u4:2 Not tainted 5.2.0-rc6+ #29 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x744 kernel/panic.c:219 __warn.cold+0x20/0x4d kernel/panic.c:576 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986 RIP: 0010:perf_group_attach+0x3fd/0x4d0 kernel/events/core.c:1835 Code: ff 48 8d 7b 10 48 89 f8 48 c1 e8 03 42 80 3c 28 00 75 57 48 8b 5b 10 48 83 eb 10 49 39 dc 75 d4 e9 20 ff ff ff e8 e3 39 eb ff <0f> 0b e9 55 fd ff ff 48 c7 c7 f4 58 81 89 e8 00 e6 23 00 e9 5b fc RSP: 0018:ffff8880ae809ea8 EFLAGS: 00010006 RAX: ffff8880a9b26440 RBX: ffff88806a9f8b00 RCX: ffffffff81858608 RDX: 0000000000010000 RSI: ffffffff8185892d RDI: ffff88806a9f8d18 RBP: ffff8880ae809ed8 R08: ffff8880a9b26440 R09: ffffed1015d013cb R10: ffffed1015d013ca R11: 0000000000000003 R12: ffff88809296a480 R13: ffffe8ffffc14fc0 R14: 0000000000000000 R15: ffff8880ae83a5c8 add_event_to_ctx kernel/events/core.c:2393 [inline] __perf_install_in_context+0x4b5/0x960 kernel/events/core.c:2544 remote_function kernel/events/core.c:86 [inline] remote_function+0x129/0x1a0 kernel/events/core.c:66 flush_smp_call_function_queue+0x147/0x4f0 kernel/smp.c:244 generic_smp_call_function_single_interrupt+0x13/0x2b kernel/smp.c:193 smp_call_function_single_interrupt+0x9d/0x450 arch/x86/kernel/smp.c:294 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:828 RIP: 0010:lock_release+0x12/0xa00 kernel/locking/lockdep.c:4312 Code: 89 e8 12 fd 51 00 e9 94 fc ff ff 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 57 41 56 <4c> 8d 7d d8 41 55 49 89 d5 41 54 49 89 fc 53 48 8d 9d 78 ff ff ff RSP: 0018:ffff8880a9ad7cc0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff04 RAX: dffffc0000000000 RBX: ffff8880a7d53800 RCX: ffffffff87021ab1 RDX: ffffffff8702181a RSI: 0000000000000001 RDI: ffffffff88ba3700 RBP: ffff8880a9ad7cd0 R08: ffff8880a9b26440 R09: ffffed1015d06c70 R10: ffffed1015d06c6f R11: ffff8880ae83637b R12: 0000000000000001 R13: 00000000000001f3 R14: 0000000000000001 R15: dffffc0000000000 rcu_lock_release include/linux/rcupdate.h:213 [inline] rcu_read_unlock include/linux/rcupdate.h:647 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:411 [inline] batadv_nc_worker+0x225/0x760 net/batman-adv/network-coding.c:718 process_one_work+0x989/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x354/0x420 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..