================================ WARNING: inconsistent lock state 5.5.0-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor.3/8398 [HC0[0]:SC1[1]:HE1:SE0] takes: ffffffff89c01a18 (rxrpc_conn_id_lock){+.?.}, at: spin_lock include/linux/spinlock.h:338 [inline] ffffffff89c01a18 (rxrpc_conn_id_lock){+.?.}, at: rxrpc_put_client_connection_id+0x51/0xb0 net/rxrpc/conn_client.c:138 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x194/0x410 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] rxrpc_get_client_connection_id net/rxrpc/conn_client.c:109 [inline] rxrpc_alloc_client_connection net/rxrpc/conn_client.c:193 [inline] rxrpc_get_client_conn net/rxrpc/conn_client.c:340 [inline] rxrpc_connect_call+0x7ae/0x4700 net/rxrpc/conn_client.c:701 rxrpc_new_client_call+0x82c/0x1670 net/rxrpc/call_object.c:290 rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:595 [inline] rxrpc_do_sendmsg+0x886/0x186d net/rxrpc/sendmsg.c:652 rxrpc_sendmsg+0x47e/0x5d0 net/rxrpc/af_rxrpc.c:586 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:672 ____sys_sendmsg+0x3b0/0x950 net/socket.c:2343 ___sys_sendmsg+0xe4/0x160 net/socket.c:2397 __sys_sendmmsg+0x160/0x370 net/socket.c:2487 __do_sys_sendmmsg net/socket.c:2516 [inline] __se_sys_sendmmsg net/socket.c:2513 [inline] __x64_sys_sendmmsg+0x98/0x100 net/socket.c:2513 do_syscall_64+0xca/0x5f0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe irq event stamp: 140490 hardirqs last enabled at (140490): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (140490): [] _raw_spin_unlock_irqrestore+0x7d/0xd0 kernel/locking/spinlock.c:191 hardirqs last disabled at (140489): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (140489): [] _raw_spin_lock_irqsave+0x74/0xd0 kernel/locking/spinlock.c:159 softirqs last enabled at (140240): [] sock_net include/net/sock.h:2459 [inline] softirqs last enabled at (140240): [] unix_create1+0x425/0x500 net/unix/af_unix.c:811 softirqs last disabled at (140277): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (140277): [] irq_exit+0x19a/0x1d0 kernel/softirq.c:413 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(rxrpc_conn_id_lock); lock(rxrpc_conn_id_lock); *** DEADLOCK *** 1 lock held by syz-executor.3/8398: #0: ffffffff88fa3780 (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2176 [inline] #0: ffffffff88fa3780 (rcu_callback){....}, at: rcu_core+0x53e/0x1340 kernel/rcu/tree.c:2410 stack backtrace: CPU: 0 PID: 8398 Comm: syz-executor.3 Not tainted 5.5.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x12d/0x187 lib/dump_stack.c:118 print_usage_bug.cold.63+0x31b/0x36c kernel/locking/lockdep.c:3100 valid_state kernel/locking/lockdep.c:3111 [inline] mark_lock_irq kernel/locking/lockdep.c:3308 [inline] mark_lock+0xb2c/0x11d0 kernel/locking/lockdep.c:3665 mark_usage kernel/locking/lockdep.c:3565 [inline] __lock_acquire+0x1974/0x4ef0 kernel/locking/lockdep.c:3908 lock_acquire+0x194/0x410 kernel/locking/lockdep.c:4484 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] rxrpc_put_client_connection_id+0x51/0xb0 net/rxrpc/conn_client.c:138 rxrpc_put_one_client_conn net/rxrpc/conn_client.c:955 [inline] rxrpc_put_client_conn+0x1a0/0x8f0 net/rxrpc/conn_client.c:1001 rxrpc_put_connection net/rxrpc/ar-internal.h:965 [inline] rxrpc_rcu_destroy_call+0x9b/0x1a0 net/rxrpc/call_object.c:572 rcu_do_batch kernel/rcu/tree.c:2186 [inline] rcu_core+0x5bd/0x1340 kernel/rcu/tree.c:2410 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2419 __do_softirq+0x262/0x9a8 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19a/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a6/0x5f0 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:__might_fault+0xb6/0x1b0 mm/memory.c:4595 Code: e8 3f 34 b7 ff 48 b8 00 00 00 00 00 fc ff df 65 48 8b 1c 25 c0 1e 02 00 48 8d bb 28 04 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 ca 00 00 00 48 83 bb 28 04 00 00 00 74 b8 65 48 8b 1c 25 c0 RSP: 0018:ffffc900072bfa58 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff888097d7a680 RCX: 0000000000000000 RDX: 1ffff11012faf555 RSI: 00000000ffffffff RDI: ffff888097d7aaa8 RBP: ffffc900072bfa70 R08: 0000000000000001 R09: ffff888097d7af10 R10: fffffbfff13ae938 R11: ffffffff89d749c7 R12: ffffffff87ed4ca0 R13: ffffc900072bfb60 R14: ffff8880980761c0 R15: ffffc900072bfb60 _copy_from_user+0x25/0x110 lib/usercopy.c:11 copy_from_user include/linux/uaccess.h:144 [inline] sock_do_ioctl+0x153/0x230 net/socket.c:1074 sock_ioctl+0x484/0x600 net/socket.c:1204 vfs_ioctl fs/ioctl.c:47 [inline] file_ioctl fs/ioctl.c:545 [inline] do_vfs_ioctl+0x196/0x1190 fs/ioctl.c:732 ksys_ioctl+0x62/0x90 fs/ioctl.c:749 __do_sys_ioctl fs/ioctl.c:756 [inline] __se_sys_ioctl fs/ioctl.c:754 [inline] __x64_sys_ioctl+0x6e/0xb0 fs/ioctl.c:754 do_syscall_64+0xca/0x5f0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45b207 Code: 48 83 c4 08 48 89 d8 5b 5d c3 66 0f 1f 84 00 00 00 00 00 48 89 e8 48 f7 d8 48 39 c3 0f 92 c0 eb 92 66 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 0d b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffcfe9a3de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045b207 RDX: 00007ffcfe9a3df0 RSI: 0000000000008933 RDI: 0000000000000004 RBP: 00000000004c08c7 R08: 0000000000000005 R09: 000000000000001e R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffcfe9a4370