block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! turning off the locking correctness validator. CPU: 1 PID: 1620 Comm: kworker/u5:0 Not tainted 5.6.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: knbd0-recv recv_work Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 add_chain_cache kernel/locking/lockdep.c:2840 [inline] lookup_chain_cache_add kernel/locking/lockdep.c:2914 [inline] validate_chain kernel/locking/lockdep.c:2935 [inline] __lock_acquire.cold+0x263/0x288 kernel/locking/lockdep.c:3954 lock_acquire+0x197/0x420 kernel/locking/lockdep.c:4484 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline] _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:343 [inline] lock_sock_nested+0x3b/0x110 net/core/sock.c:2936 lock_sock include/net/sock.h:1541 [inline] tcp_recvmsg+0x13b/0x2990 net/ipv4/tcp.c:1973 inet_recvmsg+0x121/0x5d0 net/ipv4/af_inet.c:838 sock_recvmsg_nosec net/socket.c:886 [inline] sock_recvmsg net/socket.c:904 [inline] sock_recvmsg+0xca/0x110 net/socket.c:900 sock_xmit.isra.0+0x35a/0x510 drivers/block/nbd.c:489 nbd_read_stat+0x176/0xfa0 drivers/block/nbd.c:678 recv_work+0xac/0x1f0 drivers/block/nbd.c:778 process_one_work+0x94b/0x1690 kernel/workqueue.c:2264 worker_thread+0x96/0xe20 kernel/workqueue.c:2410 kthread+0x357/0x430 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) block nbd0: Receive control failed (result -107) 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