netlink: 12 bytes leftover after parsing attributes in process `syz.2.2224'.
BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 15590 Comm: syz.2.2224 Not tainted 6.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0xaf/0x110 lib/dump_stack.c:120
 register_lock_class+0x268/0x280 kernel/locking/lockdep.c:1328
 __lock_acquire+0x90/0x20e0 kernel/locking/lockdep.c:5077
 lock_acquire+0xea/0x270 kernel/locking/lockdep.c:5825
 blk_freeze_acquire_lock block/blk.h:736 [inline]
 blk_freeze_queue_start+0x85/0xc0 block/blk-mq.c:145
 blk_freeze_queue block/blk-mq.c:177 [inline]
 blk_mq_freeze_queue+0xd/0x20 block/blk-mq.c:187
 elevator_init_mq+0x58/0xb0 block/elevator.c:602
 add_disk_fwnode+0x50/0x410 block/genhd.c:413
 add_disk include/linux/blkdev.h:746 [inline]
 nbd_dev_add+0x2ce/0x390 drivers/block/nbd.c:1901
 nbd_genl_connect+0x1db/0x8c0 drivers/block/nbd.c:2042
 genl_family_rcv_msg_doit+0xc9/0x120 net/netlink/genetlink.c:1115
 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
 genl_rcv_msg+0x239/0x250 net/netlink/genetlink.c:1210
 netlink_rcv_skb+0xe6/0x120 net/netlink/af_netlink.c:2551
 genl_rcv+0x23/0x30 net/netlink/genetlink.c:1219
 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
 netlink_unicast+0x259/0x380 net/netlink/af_netlink.c:1357
 netlink_sendmsg+0x33d/0x3d0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x81/0xa0 net/socket.c:744
 ____sys_sendmsg+0x1bb/0x210 net/socket.c:2607
 ___sys_sendmsg+0x28a/0x2d0 net/socket.c:2661
 __sys_sendmsg net/socket.c:2690 [inline]
 __do_sys_sendmsg net/socket.c:2699 [inline]
 __se_sys_sendmsg+0xf2/0x130 net/socket.c:2697
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xa4/0x180 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0df478e929
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0df5692038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0df49b5fa0 RCX: 00007f0df478e929
RDX: 0000000020000000 RSI: 0000200000001ac0 RDI: 0000000000000004
RBP: 00007f0df4810b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0df49b5fa0 R15: 00007ffe481a4198
 </TASK>