Warning: Permanently added '10.128.1.28' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 109.702868][T10006] IPVS: ftp: loaded support on port[0] = 21 [ 109.756912][ C1] [ 109.759443][ C1] ================================ [ 109.764559][ C1] WARNING: inconsistent lock state [ 109.769853][ C1] 5.5.0-syzkaller #0 Not tainted [ 109.774771][ C1] -------------------------------- [ 109.779861][ C1] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 109.786804][ C1] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 109.792778][ C1] ffffffff8a8c84b8 (rxrpc_conn_id_lock){+.?.}, at: rxrpc_put_client_connection_id+0x73/0xe0 [ 109.802857][ C1] {SOFTIRQ-ON-W} state was registered at: [ 109.808569][ C1] lock_acquire+0x190/0x410 [ 109.813296][ C1] _raw_spin_lock+0x2f/0x40 [ 109.817912][ C1] rxrpc_connect_call+0x954/0x4e30 [ 109.823106][ C1] rxrpc_new_client_call+0x9c0/0x1ad0 [ 109.828561][ C1] rxrpc_do_sendmsg+0xffa/0x1d5f [ 109.833669][ C1] rxrpc_sendmsg+0x4d6/0x5f0 [ 109.838345][ C1] sock_sendmsg+0xd7/0x130 [ 109.842991][ C1] ____sys_sendmsg+0x358/0x880 [ 109.847831][ C1] ___sys_sendmsg+0x100/0x170 [ 109.852590][ C1] __sys_sendmmsg+0x1bf/0x4d0 [ 109.857430][ C1] __x64_sys_sendmmsg+0x9d/0x100 [ 109.862450][ C1] do_syscall_64+0xfa/0x790 [ 109.867043][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 109.873126][ C1] irq event stamp: 182462 [ 109.877573][ C1] hardirqs last enabled at (182462): [] _raw_spin_unlock_irqrestore+0x66/0xe0 [ 109.888145][ C1] hardirqs last disabled at (182461): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 109.898384][ C1] softirqs last enabled at (182386): [] _local_bh_enable+0x1c/0x30 [ 109.908017][ C1] softirqs last disabled at (182387): [] irq_exit+0x19b/0x1e0 [ 109.917027][ C1] [ 109.917027][ C1] other info that might help us debug this: [ 109.925076][ C1] Possible unsafe locking scenario: [ 109.925076][ C1] [ 109.932506][ C1] CPU0 [ 109.935786][ C1] ---- [ 109.939062][ C1] lock(rxrpc_conn_id_lock); [ 109.943760][ C1] [ 109.947200][ C1] lock(rxrpc_conn_id_lock); [ 109.952032][ C1] [ 109.952032][ C1] *** DEADLOCK *** [ 109.952032][ C1] [ 109.960170][ C1] 1 lock held by swapper/1/0: [ 109.964879][ C1] #0: ffffffff89babac0 (rcu_callback){....}, at: rcu_core+0x562/0x1390 [ 109.973196][ C1] [ 109.973196][ C1] stack backtrace: [ 109.979106][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-syzkaller #0 [ 109.986630][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 109.996775][ C1] Call Trace: [ 110.000059][ C1] [ 110.002913][ C1] dump_stack+0x197/0x210 [ 110.007229][ C1] print_usage_bug.cold+0x327/0x378 [ 110.012514][ C1] mark_lock+0xbb4/0x1220 [ 110.016831][ C1] ? save_stack+0x5c/0x90 [ 110.021151][ C1] ? check_usage_backwards+0x330/0x330 [ 110.026659][ C1] ? __kasan_slab_free+0x102/0x150 [ 110.031906][ C1] __lock_acquire+0x1e8e/0x4a00 [ 110.036793][ C1] ? debug_object_deactivate+0x1d9/0x320 [ 110.042454][ C1] ? find_held_lock+0x35/0x130 [ 110.047202][ C1] ? __kasan_check_read+0x11/0x20 [ 110.052265][ C1] ? mark_held_locks+0xf0/0xf0 [ 110.057004][ C1] ? __kasan_check_read+0x11/0x20 [ 110.062019][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 110.066969][ C1] ? debug_object_deactivate+0x1d9/0x320 [ 110.072616][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 110.078700][ C1] lock_acquire+0x190/0x410 [ 110.083289][ C1] ? rxrpc_put_client_connection_id+0x73/0xe0 [ 110.089352][ C1] _raw_spin_lock+0x2f/0x40 [ 110.093907][ C1] ? rxrpc_put_client_connection_id+0x73/0xe0 [ 110.099970][ C1] rxrpc_put_client_connection_id+0x73/0xe0 [ 110.105933][ C1] rxrpc_put_client_conn+0x243/0xc90 [ 110.111212][ C1] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 110.116685][ C1] rxrpc_rcu_destroy_call+0xbd/0x200 [ 110.122084][ C1] rcu_core+0x5e1/0x1390 [ 110.126310][ C1] ? __rcu_read_unlock+0x700/0x700 [ 110.131571][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 110.137123][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 110.143810][ C1] ? run_rebalance_domains+0x227/0x2d0 [ 110.149255][ C1] rcu_core_si+0x9/0x10 [ 110.153407][ C1] __do_softirq+0x262/0x98c [ 110.157900][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 110.162741][ C1] irq_exit+0x19b/0x1e0 [ 110.166886][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 110.172429][ C1] apic_timer_interrupt+0xf/0x20 [ 110.177340][ C1] [ 110.180274][ C1] RIP: 0010:native_safe_halt+0xe/0x10 [ 110.185640][ C1] Code: 38 ea c7 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 94 76 5c 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 84 76 5c 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 ce b7 76 f9 e8 09 [ 110.205527][ C1] RSP: 0018:ffffc90000d3fd68 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 110.214102][ C1] RAX: 1ffffffff1367542 RBX: ffff8880a99fc340 RCX: 0000000000000000 [ 110.222063][ C1] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffff8880a99fcbd4 [ 110.230025][ C1] RBP: ffffc90000d3fd98 R08: ffff8880a99fc340 R09: 0000000000000000 [ 110.238019][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 110.246058][ C1] R13: ffffffff8aa509c0 R14: 0000000000000000 R15: 0000000000000001 [ 110.254039][ C1] ? default_idle+0x4e/0x360 [ 110.2586