================================
WARNING: inconsistent lock state
4.14.306-syzkaller #0 Not tainted
--------------------------------
inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
syz-executor.0/12826 [HC0[0]:SC1[1]:HE1:SE0] takes:
(&(&local->client_conns_lock)->rlock){+.?.}, at: [<ffffffff867de3a1>] spin_lock include/linux/spinlock.h:317 [inline]
(&(&local->client_conns_lock)->rlock){+.?.}, at: [<ffffffff867de3a1>] rxrpc_put_one_client_conn net/rxrpc/conn_client.c:905 [inline]
(&(&local->client_conns_lock)->rlock){+.?.}, at: [<ffffffff867de3a1>] rxrpc_put_client_conn+0x661/0xac0 net/rxrpc/conn_client.c:957
{SOFTIRQ-ON-W} state was registered at:
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
rxrpc_get_client_conn net/rxrpc/conn_client.c:306 [inline]
rxrpc_connect_call+0x2bb/0x3e10 net/rxrpc/conn_client.c:692
rxrpc_new_client_call+0x8f4/0x1a10 net/rxrpc/call_object.c:276
rxrpc_new_client_call_for_sendmsg net/rxrpc/sendmsg.c:531 [inline]
rxrpc_do_sendmsg+0x8dc/0xfb0 net/rxrpc/sendmsg.c:583
rxrpc_sendmsg+0x3cf/0x5f0 net/rxrpc/af_rxrpc.c:543
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
irq event stamp: 1520
hardirqs last enabled at (1520): [<ffffffff8724fcb9>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
hardirqs last enabled at (1520): [<ffffffff8724fcb9>] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:192
hardirqs last disabled at (1519): [<ffffffff8724f946>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (1519): [<ffffffff8724f946>] _raw_spin_lock_irqsave+0x66/0xc0 kernel/locking/spinlock.c:160
softirqs last enabled at (1302): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314
softirqs last disabled at (1495): [<ffffffff81322e33>] invoke_softirq kernel/softirq.c:368 [inline]
softirqs last disabled at (1495): [<ffffffff81322e33>] irq_exit+0x193/0x240 kernel/softirq.c:409
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&(&local->client_conns_lock)->rlock);
<Interrupt>
lock(&(&local->client_conns_lock)->rlock);
*** DEADLOCK ***
1 lock held by syz-executor.0/12826:
#0: (rcu_callback){....}, at: [<ffffffff8146ee1e>] __rcu_reclaim kernel/rcu/rcu.h:185 [inline]
#0: (rcu_callback){....}, at: [<ffffffff8146ee1e>] rcu_do_batch kernel/rcu/tree.c:2699 [inline]
#0: (rcu_callback){....}, at: [<ffffffff8146ee1e>] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
#0: (rcu_callback){....}, at: [<ffffffff8146ee1e>] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
#0: (rcu_callback){....}, at: [<ffffffff8146ee1e>] rcu_process_callbacks+0x84e/0x1180 kernel/rcu/tree.c:2946
stack backtrace:
CPU: 1 PID: 12826 Comm: syz-executor.0 Not tainted 4.14.306-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
print_usage_bug.cold+0x42e/0x570 kernel/locking/lockdep.c:2589
valid_state kernel/locking/lockdep.c:2602 [inline]
mark_lock_irq kernel/locking/lockdep.c:2796 [inline]
mark_lock+0xb4d/0x1050 kernel/locking/lockdep.c:3194
mark_irqflags kernel/locking/lockdep.c:3072 [inline]
__lock_acquire+0xc81/0x3f20 kernel/locking/lockdep.c:3448
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
rxrpc_put_one_client_conn net/rxrpc/conn_client.c:905 [inline]
rxrpc_put_client_conn+0x661/0xac0 net/rxrpc/conn_client.c:957
rxrpc_put_connection net/rxrpc/ar-internal.h:862 [inline]
rxrpc_rcu_destroy_call+0x83/0x190 net/rxrpc/call_object.c:653
__rcu_reclaim kernel/rcu/rcu.h:195 [inline]
rcu_do_batch kernel/rcu/tree.c:2699 [inline]
invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline]
__rcu_process_callbacks kernel/rcu/tree.c:2929 [inline]
rcu_process_callbacks+0x780/0x1180 kernel/rcu/tree.c:2946
__do_softirq+0x24d/0x9ff kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x193/0x240 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:638 [inline]
smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:796
</IRQ>
RIP: 0033:0x7ffa75c26429
RSP: 002b:00007ffe096570b0 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff10
RAX: 000000008c083118 RBX: 00007ffa75d99018 RCX: 0000001b2ee20000
RDX: 000000008c6af118 RSI: 0000001b2ee2ad74 RDI: 0000000009bea73f
RBP: 000000008c083118 R08: 0000000000001118 R09: 000000008c08311c
R10: 00007ffe09657270 R11: 0000000000000246 R12: 00007ffa75d8d000
R13: 0000000000000001 R14: 0000000000006725 R15: ffffffff810dbc1a
process 'syz-executor.0' launched './file0' with NULL argv: empty string added
IPVS: ftp: loaded support on port[0] = 21