================================
WARNING: inconsistent lock state
5.5.0-syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
syz-executor.2/14293 [HC0[0]:SC1[1]:HE1:SE0] takes:
ffffffff8a8c8538 (rxrpc_conn_id_lock){+.?.}, at: spin_lock include/linux/spinlock.h:338 [inline]
ffffffff8a8c8538 (rxrpc_conn_id_lock){+.?.}, at: rxrpc_put_client_connection_id net/rxrpc/conn_client.c:138 [inline]
ffffffff8a8c8538 (rxrpc_conn_id_lock){+.?.}, at: rxrpc_put_client_connection_id+0x73/0xe0 net/rxrpc/conn_client.c:135
{SOFTIRQ-ON-W} state was registered at:
lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/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+0x954/0x4e30 net/rxrpc/conn_client.c:701
rxrpc_new_client_call+0x9c0/0x1ad0 net/rxrpc/call_object.c:290
rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:595 [inline]
rxrpc_do_sendmsg+0xffa/0x1d5f net/rxrpc/sendmsg.c:652
rxrpc_sendmsg+0x4d6/0x5f0 net/rxrpc/af_rxrpc.c:586
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg+0xd7/0x130 net/socket.c:672
____sys_sendmsg+0x358/0x880 net/socket.c:2343
___sys_sendmsg+0x100/0x170 net/socket.c:2397
__sys_sendmmsg+0x1bf/0x4d0 net/socket.c:2487
__do_sys_sendmmsg net/socket.c:2516 [inline]
__se_sys_sendmmsg net/socket.c:2513 [inline]
__x64_sys_sendmmsg+0x9d/0x100 net/socket.c:2513
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
irq event stamp: 13672
hardirqs last enabled at (13672): [<ffffffff87ec28d6>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last enabled at (13672): [<ffffffff87ec28d6>] _raw_spin_unlock_irqrestore+0x66/0xe0 kernel/locking/spinlock.c:191
hardirqs last disabled at (13671): [<ffffffff87ec2c4f>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (13671): [<ffffffff87ec2c4f>] _raw_spin_lock_irqsave+0x6f/0xcd kernel/locking/spinlock.c:159
softirqs last enabled at (13590): [<ffffffff86b45c42>] spin_unlock_bh include/linux/spinlock.h:383 [inline]
softirqs last enabled at (13590): [<ffffffff86b45c42>] __skb_recv_udp+0x622/0x8d0 net/ipv4/udp.c:1683
softirqs last disabled at (13595): [<ffffffff8147608b>] invoke_softirq kernel/softirq.c:373 [inline]
softirqs last disabled at (13595): [<ffffffff8147608b>] irq_exit+0x19b/0x1e0 kernel/softirq.c:413
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(rxrpc_conn_id_lock);
<Interrupt>
lock(rxrpc_conn_id_lock);
*** DEADLOCK ***
1 lock held by syz-executor.2/14293:
#0: ffffffff89babac0 (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2176 [inline]
#0: ffffffff89babac0 (rcu_callback){....}, at: rcu_core+0x562/0x1390 kernel/rcu/tree.c:2410
stack backtrace:
CPU: 0 PID: 14293 Comm: syz-executor.2 Not tainted 5.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x197/0x210 lib/dump_stack.c:118
print_usage_bug.cold+0x327/0x378 kernel/locking/lockdep.c:3100
valid_state kernel/locking/lockdep.c:3111 [inline]
mark_lock_irq kernel/locking/lockdep.c:3308 [inline]
mark_lock+0xbb4/0x1220 kernel/locking/lockdep.c:3665
mark_usage kernel/locking/lockdep.c:3565 [inline]
__lock_acquire+0x1e8e/0x4a00 kernel/locking/lockdep.c:3908
lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4484
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151
spin_lock include/linux/spinlock.h:338 [inline]
rxrpc_put_client_connection_id net/rxrpc/conn_client.c:138 [inline]
rxrpc_put_client_connection_id+0x73/0xe0 net/rxrpc/conn_client.c:135
rxrpc_put_one_client_conn net/rxrpc/conn_client.c:955 [inline]
rxrpc_put_client_conn+0x243/0xc90 net/rxrpc/conn_client.c:1001
rxrpc_put_connection net/rxrpc/ar-internal.h:965 [inline]
rxrpc_rcu_destroy_call+0xbd/0x200 net/rxrpc/call_object.c:572
rcu_do_batch kernel/rcu/tree.c:2186 [inline]
rcu_core+0x5e1/0x1390 kernel/rcu/tree.c:2410
rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2419
__do_softirq+0x262/0x98c kernel/softirq.c:292
invoke_softirq kernel/softirq.c:373 [inline]
irq_exit+0x19b/0x1e0 kernel/softirq.c:413
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:752 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x90/0xe0 kernel/locking/spinlock.c:191
Code: 48 c7 c0 f8 a9 b3 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 39 48 83 3d ff 80 c7 01 00 74 24 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 81 7b 64 f9 65 8b 05 72 f5 15 78
RSP: 0018:ffffc900046274b0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff136753f RBX: 0000000000000286 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000006 RDI: 0000000000000286
RBP: ffffc900046274c0 R08: ffff88808f3fc280 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888091416580
R13: 1ffff920008c4e9f R14: ffffc90004627538 R15: 0000000000000001
spin_unlock_irqrestore include/linux/spinlock.h:393 [inline]
prepare_to_wait_exclusive+0x123/0x320 kernel/sched/wait.c:262
__skb_wait_for_more_packets+0x10b/0x5f0 net/core/datagram.c:94
__skb_recv_udp+0x484/0x8d0 net/ipv4/udp.c:1712
udpv6_recvmsg+0x3f7/0x18f0 net/ipv6/udp.c:288
inet6_recvmsg+0x136/0x610 net/ipv6/af_inet6.c:592
sock_recvmsg_nosec net/socket.c:886 [inline]
____sys_recvmsg+0x50d/0x5f0 net/socket.c:2564
___sys_recvmsg+0xe4/0x150 net/socket.c:2608
do_recvmmsg+0x27e/0x7a0 net/socket.c:2706
__sys_recvmmsg+0x259/0x270 net/socket.c:2785
__do_sys_recvmmsg net/socket.c:2808 [inline]
__se_sys_recvmmsg net/socket.c:2801 [inline]
__x64_sys_recvmmsg+0xe6/0x140 net/socket.c:2801
do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b399
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f93cce69c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f93cce6a6d4 RCX: 000000000045b399
RDX: 000000000000038c RSI: 0000000020000200 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000891 R14: 00000000004c9f8b R15: 000000000075bf2c