Warning: Permanently added '10.128.0.235' (ECDSA) to the list of known hosts. [ 27.668588] IPVS: ftp: loaded support on port[0] = 21 executing program [ 27.817601] [ 27.819229] ================================ [ 27.823614] WARNING: inconsistent lock state [ 27.827993] 4.14.277-syzkaller #0 Not tainted [ 27.832458] -------------------------------- [ 27.836835] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 27.842949] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 27.848195] (&(&local->client_conns_lock)->rlock){+.?.}, at: [] rxrpc_put_client_conn+0x661/0xac0 [ 27.858834] {SOFTIRQ-ON-W} state was registered at: [ 27.863839] lock_acquire+0x170/0x3f0 [ 27.867696] _raw_spin_lock+0x2a/0x40 [ 27.871553] rxrpc_connect_call+0x2bb/0x3e10 [ 27.876018] rxrpc_new_client_call+0x8f4/0x1a10 [ 27.880743] rxrpc_do_sendmsg+0x8dc/0xfb0 [ 27.884947] rxrpc_sendmsg+0x3cf/0x5f0 [ 27.888890] sock_sendmsg+0xb5/0x100 [ 27.892659] ___sys_sendmsg+0x6c8/0x800 [ 27.896692] __sys_sendmsg+0xa3/0x120 [ 27.900552] SyS_sendmsg+0x27/0x40 [ 27.904167] do_syscall_64+0x1d5/0x640 [ 27.908119] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.913361] irq event stamp: 119798 [ 27.916960] hardirqs last enabled at (119798): [] _raw_spin_unlock_irqrestore+0x79/0xe0 [ 27.926722] hardirqs last disabled at (119797): [] _raw_spin_lock_irqsave+0x66/0xc0 [ 27.936049] softirqs last enabled at (119752): [] irq_enter+0xbd/0xd0 [ 27.944248] softirqs last disabled at (119753): [] irq_exit+0x193/0x240 [ 27.952531] [ 27.952531] other info that might help us debug this: [ 27.959179] Possible unsafe locking scenario: [ 27.959179] [ 27.965204] CPU0 [ 27.967757] ---- [ 27.970323] lock(&(&local->client_conns_lock)->rlock); [ 27.975746] [ 27.978471] lock(&(&local->client_conns_lock)->rlock); [ 27.984063] [ 27.984063] *** DEADLOCK *** [ 27.984063] [ 27.990092] 1 lock held by swapper/1/0: [ 27.994039] #0: (rcu_callback){....}, at: [] rcu_process_callbacks+0x84e/0x1180 [ 28.003207] [ 28.003207] stack backtrace: [ 28.007684] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.277-syzkaller #0 [ 28.014749] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.024073] Call Trace: [ 28.026626] [ 28.028751] dump_stack+0x1b2/0x281 [ 28.032348] print_usage_bug.cold+0x42e/0x570 [ 28.036813] mark_lock+0xb4d/0x1050 [ 28.040412] ? print_irq_inversion_bug+0xd0/0xd0 [ 28.045137] __lock_acquire+0xc81/0x3f20 [ 28.049176] ? __lock_acquire+0x5fc/0x3f20 [ 28.053382] ? trace_hardirqs_on+0x10/0x10 [ 28.057588] ? lock_acquire+0x170/0x3f0 [ 28.061536] ? debug_object_deactivate+0x1da/0x2e0 [ 28.066436] ? trace_hardirqs_on+0x10/0x10 [ 28.070640] ? lock_acquire+0x170/0x3f0 [ 28.074584] ? lock_downgrade+0x740/0x740 [ 28.078715] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 28.083789] lock_acquire+0x170/0x3f0 [ 28.087561] ? rxrpc_put_client_conn+0x661/0xac0 [ 28.092288] _raw_spin_lock+0x2a/0x40 [ 28.096057] ? rxrpc_put_client_conn+0x661/0xac0 [ 28.100782] rxrpc_put_client_conn+0x661/0xac0 [ 28.105336] ? rxrpc_rcu_destroy_call+0x83/0x190 [ 28.110062] rxrpc_rcu_destroy_call+0x83/0x190 [ 28.114617] ? rxrpc_call_timer_expired+0x70/0x70 [ 28.119431] rcu_process_callbacks+0x780/0x1180 [ 28.124080] ? note_gp_changes+0x2f0/0x2f0 [ 28.128287] ? sched_clock+0x2a/0x40 [ 28.131974] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 28.137394] __do_softirq+0x24d/0x9ff [ 28.141166] ? check_preemption_disabled+0x35/0x240 [ 28.146158] irq_exit+0x193/0x240 [ 28.149581] smp_apic_timer_interrupt+0x141/0x5e0 [ 28.154396] apic_timer_interrupt+0x93/0xa0 [ 28.158685] [ 28.160896] RIP: 0010:native_safe_halt+0xe/0x10 [ 28.165535] RSP: 0018:ffff8880b5487e68 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 28.173220] RAX: 1ffffffff11e1314 RBX: dffffc0000000000 RCX: 0000000000000000 [ 28.180470] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880b5478bc4 [ 28.187969] RBP: ffffffff88f09890 R08: 0000000000000000 R09: 0000000000000000 [ 28.195210] R10: 0000000000000000 R11: 0000000000000000 R12: ffffed1016a8f068 [ 28.202452] R13: ffff8880b5478340 R14: 0000000000000000 R15: 0000000000000000 [ 28.209698] default_idle+0x47/0x370 [ 28.213383] do_idle+0x250/0x3c0 [ 28.216720] cpu_startup_en