------------[ cut here ]------------ WARNING: CPU: 1 PID: 4844 at kernel/locking/lockdep.c:897 look_up_lock_class+0x6a/0xd0 kernel/locking/lockdep.c:897 Modules linked in: CPU: 1 PID: 4844 Comm: syz-executor.1 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:look_up_lock_class+0x6a/0xd0 kernel/locking/lockdep.c:897 Code: 85 c0 75 0a eb 57 48 8b 00 48 85 c0 74 4f 48 39 70 40 75 f2 48 8b 4f 18 48 39 88 b0 00 00 00 74 0b 48 81 3f 20 f5 f3 8e 74 02 <0f> 0b 5d c3 9c 5a 80 e6 02 74 c2 e8 26 fb 9d fa 85 c0 74 1f 8b 05 RSP: 0018:ffffc9000496fa30 EFLAGS: 00010002 RAX: ffffffff8fd86d60 RBX: ffffffff902899c0 RCX: ffffffff8aa7a240 RDX: 0000000000000046 RSI: ffffffff906001a0 RDI: ffff88801e0cf0a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88801e0cf0a0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007efff8ce8700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda3d3d81b8 CR3: 0000000021215000 CR4: 00000000003526e0 Call Trace: register_lock_class+0xb7/0x10c0 kernel/locking/lockdep.c:1246 __lock_acquire+0x105/0x54a0 kernel/locking/lockdep.c:4894 lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5590 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] lock_sock_nested+0x5b/0xf0 net/core/sock.c:3288 lock_sock include/net/sock.h:1645 [inline] inet_autobind+0x1a/0x190 net/ipv4/af_inet.c:176 inet_dgram_connect+0x1f5/0x2d0 net/ipv4/af_inet.c:574 __sys_connect_file+0x155/0x1a0 net/socket.c:1896 __sys_connect+0x161/0x190 net/socket.c:1913 __do_sys_connect net/socket.c:1923 [inline] __se_sys_connect net/socket.c:1920 [inline] __x64_sys_connect+0x6f/0xb0 net/socket.c:1920 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7efffb793ae9 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:00007efff8ce8188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007efffb8a7020 RCX: 00007efffb793ae9 RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000005 RBP: 00007efffb7edf25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007efffbddab2f R14: 00007efff8ce8300 R15: 0000000000022000