------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(1) WARNING: CPU: 0 PID: 9857 at kernel/locking/lockdep.c:167 hlock_class kernel/locking/lockdep.c:167 [inline] WARNING: CPU: 0 PID: 9857 at kernel/locking/lockdep.c:167 hlock_class kernel/locking/lockdep.c:156 [inline] WARNING: CPU: 0 PID: 9857 at kernel/locking/lockdep.c:167 mark_lock+0x22b/0x1220 kernel/locking/lockdep.c:3643 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 9857 Comm: syz-executor957 Not tainted 5.5.0-rc5-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:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 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:3643 Code: d0 7c 08 84 d2 0f 85 a8 0e 00 00 44 8b 1d fd 48 21 09 45 85 db 75 b6 48 c7 c6 60 95 2b 88 48 c7 c7 a0 95 2b 88 e8 d4 38 eb ff <0f> 0b 31 db e9 aa fe ff ff 48 c7 c7 60 65 66 8b e8 a0 49 58 00 e9 RSP: 0018:ffffc900024876a0 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815e8b46 RDI: fffff52000490ec6 RBP: ffffc900024876f0 R08: ffff88808bdd02c0 R09: fffffbfff1333569 R10: fffffbfff1333568 R11: ffffffff8999ab43 R12: 0000000000000002 R13: ffff88808bdd0b80 R14: 0000000000000000 R15: 0000000000040704 mark_usage kernel/locking/lockdep.c:3580 [inline] __lock_acquire+0x1370/0x4a00 kernel/locking/lockdep.c:3909 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __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:3934 [inline] __dev_queue_xmit+0x29f3/0x35c0 net/core/dev.c:4009 dev_queue_xmit+0x18/0x20 net/core/dev.c:4046 packet_snd net/packet/af_packet.c:2966 [inline] packet_sendmsg+0x260d/0x6220 net/packet/af_packet.c:2991 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 __sys_sendto+0x262/0x380 net/socket.c:1985 __do_sys_sendto net/socket.c:1997 [inline] __se_sys_sendto net/socket.c:1993 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1993 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x449159 Code: e8 8c e7 ff ff 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 fb 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fa19d6b7d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00000000006e4a38 RCX: 0000000000449159 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007 RBP: 00000000006e4a30 R08: 0000000020000100 R09: 0000000000000014 R10: 0000000004020083 R11: 0000000000000246 R12: 00000000006e4a3c R13: 000000000000306d R14: 697376656474656e R15: 00000000006e4a3c Kernel Offset: disabled Rebooting in 86400 seconds..