Warning: Permanently added '10.128.0.230' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 30.549771] IPVS: ftp: loaded support on port[0] = 21 [ 30.629106] [ 30.630732] ================================ [ 30.635111] WARNING: inconsistent lock state [ 30.639489] 4.14.212-syzkaller #0 Not tainted [ 30.643953] -------------------------------- [ 30.648327] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 30.654441] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 30.659688] (&(&local->client_conns_lock)->rlock){+.?.}, at: [] rxrpc_put_client_conn+0x661/0xac0 [ 30.670355] {SOFTIRQ-ON-W} state was registered at: [ 30.675347] lock_acquire+0x170/0x3f0 [ 30.679206] _raw_spin_lock+0x2a/0x40 [ 30.683063] rxrpc_connect_call+0x2bb/0x3e10 [ 30.687529] rxrpc_new_client_call+0x8f4/0x1a10 [ 30.692254] rxrpc_do_sendmsg+0x8dc/0xfae [ 30.696462] rxrpc_sendmsg+0x3cf/0x5f0 [ 30.700411] sock_sendmsg+0xb5/0x100 [ 30.704216] ___sys_sendmsg+0x326/0x800 [ 30.708265] __sys_sendmmsg+0x129/0x330 [ 30.712297] SyS_sendmmsg+0x2f/0x50 [ 30.715981] do_syscall_64+0x1d5/0x640 [ 30.719927] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 30.725170] irq event stamp: 128394 [ 30.728777] hardirqs last enabled at (128394): [] _raw_spin_unlock_irqrestore+0x79/0xe0 [ 30.738549] hardirqs last disabled at (128393): [] _raw_spin_lock_irqsave+0x66/0xc0 [ 30.747879] softirqs last enabled at (128180): [] irq_enter+0xbd/0xd0 [ 30.756079] softirqs last disabled at (128181): [] irq_exit+0x193/0x240 [ 30.764376] [ 30.764376] other info that might help us debug this: [ 30.771013] Possible unsafe locking scenario: [ 30.771013] [ 30.777038] CPU0 [ 30.779592] ---- [ 30.782143] lock(&(&local->client_conns_lock)->rlock); [ 30.787563] [ 30.790316] lock(&(&local->client_conns_lock)->rlock); [ 30.795924] [ 30.795924] *** DEADLOCK *** [ 30.795924] [ 30.801955] 1 lock held by swapper/1/0: [ 30.805896] #0: (rcu_callback){....}, at: [] rcu_process_callbacks+0x84e/0x1180 [ 30.815057] [ 30.815057] stack backtrace: [ 30.819526] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.212-syzkaller #0 [ 30.826594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.835933] Call Trace: [ 30.838506] [ 30.840648] dump_stack+0x1b2/0x283 [ 30.844249] print_usage_bug.cold+0x42e/0x570 [ 30.848721] mark_lock+0xb4d/0x1050 [ 30.852341] ? print_irq_inversion_bug+0xd0/0xd0 [ 30.857070] __lock_acquire+0xc81/0x3f20 [ 30.861120] ? __lock_acquire+0x5fc/0x3f20 [ 30.865339] ? trace_hardirqs_on+0x10/0x10 [ 30.869546] ? lock_acquire+0x170/0x3f0 [ 30.873495] ? debug_object_deactivate+0x1da/0x2e0 [ 30.878395] ? trace_hardirqs_on+0x10/0x10 [ 30.882616] ? lock_acquire+0x170/0x3f0 [ 30.886575] ? lock_downgrade+0x740/0x740 [ 30.890710] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 30.895798] lock_acquire+0x170/0x3f0 [ 30.899573] ? rxrpc_put_client_conn+0x661/0xac0 [ 30.904298] _raw_spin_lock+0x2a/0x40 [ 30.908068] ? rxrpc_put_client_conn+0x661/0xac0 [ 30.912793] rxrpc_put_client_conn+0x661/0xac0 [ 30.917348] ? rxrpc_rcu_destroy_call+0x83/0x190 [ 30.922088] rxrpc_rcu_destroy_call+0x83/0x190 [ 30.926642] ? rxrpc_call_timer_expired+0x70/0x70 [ 30.931471] rcu_process_callbacks+0x780/0x1180 [ 30.936122] ? note_gp_changes+0x2f0/0x2f0 [ 30.940329] ? sched_clock+0x2a/0x40 [ 30.944026] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 30.949448] __do_softirq+0x254/0xa1d [ 30.953225] ? check_preemption_disabled+0x35/0x240 [ 30.958226] irq_exit+0x193/0x240 [ 30.961665] smp_apic_timer_interrupt+0x141/0x5e0 [ 30.966502] apic_timer_interrupt+0x93/0xa0 [ 30.970805] [ 30.973029] RIP: 0010:native_safe_halt+0xe/0x10 [ 30.977665] RSP: 0018:ffff8880b5477e68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 30.985344] RAX: 1ffffffff11e1254 RBX: dffffc0000000000 RCX: 0000000000000000 [ 30.992585] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880b5468bc4 [ 30.999843] RBP: ffffffff88f09290 R08: 0000000000000000 R09: 0000000000000000 [ 31.007084] R10: 0000000000000000 R11: 0000000000000000 R12: ffffed1016a8d068 [ 31.014326] R13: ffff8880b5468340 R14: 0000000000000000 R15: 0000000000000000 [ 31.021577] default_idle+0x47/0x370 [ 31.025265] do_idle+0x250/0x3c0 [ 31.028606] cpu_startu