syzbot

WARNING: CPU: 1 PID: 15963 at kernel/locking/lockdep.c:698 arch_local_save_flags arch/x86/include/asm/paravirt.h:784 [inline]
WARNING: CPU: 1 PID: 15963 at kernel/locking/lockdep.c:698 look_up_lock_class kernel/locking/lockdep.c:689 [inline]
WARNING: CPU: 1 PID: 15963 at kernel/locking/lockdep.c:698 register_lock_class+0x77b/0x11c0 kernel/locking/lockdep.c:749
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 15963 Comm: syz-executor236 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 panic+0x26a/0x50e kernel/panic.c:186
 __warn.cold+0x20/0x5a kernel/panic.c:541
 report_bug+0x262/0x2b0 lib/bug.c:183
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296
 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+0x77b/0x11c0 kernel/locking/lockdep.c:749
Code: 8b 05 c9 63 ec 0b 85 c0 0f 85 17 ff ff ff 48 c7 c6 e0 1b 6a 88 48 c7 c7 40 19 6a 88 e8 c3 29 a8 06 0f 0b e9 fd fe ff ff 0f 0b <0f> 0b e9 b3 fa ff ff 48 8d 70 01 48 69 c0 50 01 00 00 48 89 35 ac
RSP: 0018:ffff88809ec0f928 EFLAGS: 00010087
RAX: dffffc0000000000 RBX: ffff8880b43e38e0 RCX: 0000000000000000
RDX: 1ffff1101687c71f RSI: 0000000000000000 RDI: ffff8880b43e38f8
RBP: 0000000000000000 R08: 0000000000000000 R09: 1ffff11013d81f2d
R10: ffffffff8d243760 R11: 0000000000000000 R12: ffffffff8cdd4130
R13: ffffffff894c35a0 R14: 1ffff11013d81f2d R15: 0000000000000000
 __lock_acquire+0x17d/0x3ff0 kernel/locking/lockdep.c:3304
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:168
 spin_lock_bh include/linux/spinlock.h:334 [inline]
 lock_sock_nested+0x3b/0x110 net/core/sock.c:2884
 lock_sock include/net/sock.h:1512 [inline]
 inet_autobind+0x1a/0x190 net/ipv4/af_inet.c:179
 inet_sendmsg+0x3eb/0x5a0 net/ipv4/af_inet.c:795
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xc3/0x120 net/socket.c:661
 __sys_sendto+0x21a/0x320 net/socket.c:1899
 __do_sys_sendto net/socket.c:1911 [inline]
 __se_sys_sendto net/socket.c:1907 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1907
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f25723b51e9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f25723452f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f257243e418 RCX: 00007f25723b51e9
RDX: 0000000000000051 RSI: 0000000020000080 RDI: 0000000000000025
RBP: 0000000000000000 R08: 0000000020000100 R09: 000000000000001c
R10: 0000000004008000 R11: 0000000000000246 R12: 00007f257243e410
R13: 00007f257240b07c R14: 0000000000000004 R15: 0000000000022000
Kernel Offset: disabled
Rebooting in 86400 seconds..