------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 1 PID: 9606 at kernel/locking/lockdep.c:167 hlock_class kernel/locking/lockdep.c:167 [inline] WARNING: CPU: 1 PID: 9606 at kernel/locking/lockdep.c:167 hlock_class kernel/locking/lockdep.c:156 [inline] WARNING: CPU: 1 PID: 9606 at kernel/locking/lockdep.c:167 mark_lock+0x22b/0x1220 kernel/locking/lockdep.c:3642 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 9606 Comm: syz-executor264 Not tainted 5.5.0-rc5-next-20200110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:176 [inline] fixup_bug arch/x86/kernel/traps.c:171 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:269 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:288 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:hlock_class kernel/locking/lockdep.c:167 [inline] RIP: 0010:hlock_class kernel/locking/lockdep.c:156 [inline] RIP: 0010:mark_lock+0x22b/0x1220 kernel/locking/lockdep.c:3642 Code: d0 7c 08 84 d2 0f 85 a8 0e 00 00 44 8b 1d 4d 6c 4a 09 45 85 db 75 b6 48 c7 c6 e0 91 4b 88 48 c7 c7 20 92 4b 88 e8 74 32 eb ff <0f> 0b 31 db e9 aa fe ff ff 48 c7 c7 20 a5 88 8b e8 70 e2 58 00 e9 RSP: 0018:ffffc900062bf6a0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e8546 RDI: fffff52000c57ec6 RBP: ffffc900062bf6f0 R08: ffff888092694200 R09: fffffbfff13748ed R10: fffffbfff13748ec R11: ffffffff89ba4763 R12: 0000000000000002 R13: ffff888092694ac8 R14: 0000000000000000 R15: 00000000000405cd mark_usage kernel/locking/lockdep.c:3579 [inline] __lock_acquire+0x1370/0x4a00 kernel/locking/lockdep.c:3908 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] __netif_tx_lock include/linux/netdevice.h:3937 [inline] __dev_queue_xmit+0x29c6/0x35c0 net/core/dev.c:4009 dev_queue_xmit+0x18/0x20 net/core/dev.c:4046 packet_snd net/packet/af_packet.c:2967 [inline] packet_sendmsg+0x25f7/0x6210 net/packet/af_packet.c:2992 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:672 __sys_sendto+0x262/0x380 net/socket.c:1998 __do_sys_sendto net/socket.c:2010 [inline] __se_sys_sendto net/socket.c:2006 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:2006 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x448599 Code: e8 ec 0e 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 ab 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1da6e2ed98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000006ddc98 RCX: 0000000000448599 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000007 RBP: 00000000006ddc90 R08: 0000000020000100 R09: 0000000000000014 R10: 0000000004020083 R11: 0000000000000246 R12: 00000000006ddc9c R13: 000000000000306d R14: 697376656474656e R15: 000000000000000b Kernel Offset: disabled Rebooting in 86400 seconds..