------------[ cut here ]------------ WARNING: CPU: 0 PID: 23501 at kernel/locking/lockdep.c:898 look_up_lock_class+0x110/0x120 kernel/locking/lockdep.c:888 Modules linked in: CPU: 0 PID: 23501 Comm: syz-executor.4 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+0x110/0x120 kernel/locking/lockdep.c:897 Code: 31 db 85 c0 74 af 83 3d 65 c3 fd 03 00 75 a6 31 db 48 c7 c7 60 fa 6e 8a 48 c7 c6 a0 fa 6e 8a 31 c0 e8 14 d3 4e f7 0f 0b eb 8b <0f> 0b eb 87 e8 c7 fa ff ff 0f 1f 80 00 00 00 00 55 53 bd 01 00 00 RSP: 0018:ffffc900043478f8 EFLAGS: 00010002 RAX: ffffffff8fa7ab00 RBX: ffffffff8f900680 RCX: 0000000000000a3e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88803e3748a0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1bf9dae R11: 0000000000000000 R12: ffff88803e3748a0 R13: ffffc900043479c0 R14: 1ffff92000868f30 R15: dffffc0000000000 FS: 00007f0609c8f700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c018d54387 CR3: 00000000750cb000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: register_lock_class+0x110/0x1390 kernel/locking/lockdep.c:1246 __lock_acquire+0x149/0x2b00 kernel/locking/lockdep.c:4894 lock_acquire+0x19f/0x4d0 kernel/locking/lockdep.c:5625 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] lock_sock_nested+0x6c/0x100 net/core/sock.c:3288 lock_sock include/net/sock.h:1645 [inline] inet_autobind net/ipv4/af_inet.c:176 [inline] inet_dgram_connect+0x13b/0x370 net/ipv4/af_inet.c:574 __sys_connect_file net/socket.c:1896 [inline] __sys_connect+0x29b/0x2d0 net/socket.c:1913 __do_sys_connect net/socket.c:1923 [inline] __se_sys_connect net/socket.c:1920 [inline] __x64_sys_connect+0x76/0x80 net/socket.c:1920 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f060c73aae9 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:00007f0609c8f188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a RAX: ffffffffffffffda RBX: 00007f060c84e020 RCX: 00007f060c73aae9 RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000005 RBP: 00007f060c794f25 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff7c004fdf R14: 00007f0609c8f300 R15: 0000000000022000