WARNING: CPU: 0 PID: 31977 at kernel/locking/lockdep.c:698 arch_local_save_flags arch/x86/include/asm/paravirt.h:784 [inline] WARNING: CPU: 0 PID: 31977 at kernel/locking/lockdep.c:698 look_up_lock_class kernel/locking/lockdep.c:689 [inline] WARNING: CPU: 0 PID: 31977 at kernel/locking/lockdep.c:698 register_lock_class+0x97a/0x1b10 kernel/locking/lockdep.c:748 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 31977 Comm: syz-executor.5 Not tainted 4.19.177-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+0x17c/0x226 lib/dump_stack.c:118 panic+0x1cd/0x375 kernel/panic.c:186 __warn.cold.7+0x1b/0x36 kernel/panic.c:541 report_bug+0x1a1/0x200 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x200/0x350 arch/x86/kernel/traps.c:296 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:698 [inline] RIP: 0010:register_lock_class+0x97a/0x1b10 kernel/locking/lockdep.c:748 Code: 89 cf 44 89 95 60 ff ff ff e8 d2 bb 45 00 44 8b 95 60 ff ff ff 48 c7 c1 20 77 ad 8b 4c 8b 8d 68 ff ff ff e9 26 f7 ff ff 0f 0b <0f> 0b e9 6e f9 ff ff 49 8d 46 01 4d 69 f6 50 01 00 00 48 89 05 7d RSP: 0018:ffff8880a946f948 EFLAGS: 00010083 RAX: 0000000000000004 RBX: ffffffff8b667e50 RCX: 0000000000000003 RDX: 1ffffffff175aee4 RSI: 0000000000000000 RDI: ffff88809bba5178 RBP: ffff8880a946fa20 R08: 0000000000000000 R09: ffff88809bba5160 R10: 0000000000000000 R11: ffff8880a946fe1b R12: 1ffff1101528df33 R13: 0000000000000000 R14: ffffffff88f259a0 R15: ffffffff88ddf280 __lock_acquire+0x1a0/0x47c0 kernel/locking/lockdep.c:3303 lock_acquire+0x180/0x3a0 kernel/locking/lockdep.c:3907 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:168 spin_lock_bh include/linux/spinlock.h:334 [inline] lock_sock_nested+0x3a/0x100 net/core/sock.c:2864 lock_sock include/net/sock.h:1510 [inline] inet_autobind+0x13/0x160 net/ipv4/af_inet.c:179 inet_dgram_connect+0x1db/0x270 net/ipv4/af_inet.c:569 __sys_connect+0x20d/0x2d0 net/socket.c:1663 __do_sys_connect net/socket.c:1674 [inline] __se_sys_connect net/socket.c:1671 [inline] __x64_sys_connect+0x6e/0xb0 net/socket.c:1671 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x465a59 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa60caa2188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 000000000055bfe8 RCX: 0000000000465a59 RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000004 RBP: 00000000004af682 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000055bfe8 R13: 00007ffdcfd3904f R14: 00007fa60caa2300 R15: 0000000000022000 Kernel Offset: disabled Rebooting in 86400 seconds..