Warning: Permanently added '10.128.0.165' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 94.947193][ T9921] IPVS: ftp: loaded support on port[0] = 21 [ 95.000926][ C0] [ 95.003412][ C0] ================================ [ 95.008506][ C0] WARNING: inconsistent lock state [ 95.013624][ C0] 5.5.0-syzkaller #0 Not tainted [ 95.018592][ C0] -------------------------------- [ 95.023869][ C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 95.030716][ C0] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 95.036676][ C0] ffff8880a74451c8 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x6ed/0xc90 [ 95.047668][ C0] {SOFTIRQ-ON-W} state was registered at: [ 95.053373][ C0] lock_acquire+0x190/0x410 [ 95.057975][ C0] _raw_spin_lock+0x2f/0x40 [ 95.062579][ C0] rxrpc_connect_call+0x358/0x4e30 [ 95.067759][ C0] rxrpc_new_client_call+0x9c0/0x1ad0 [ 95.073419][ C0] rxrpc_do_sendmsg+0xffa/0x1d5f [ 95.078447][ C0] rxrpc_sendmsg+0x4d6/0x5f0 [ 95.083151][ C0] sock_sendmsg+0xd7/0x130 [ 95.087773][ C0] ____sys_sendmsg+0x358/0x880 [ 95.092726][ C0] ___sys_sendmsg+0x100/0x170 [ 95.097488][ C0] __sys_sendmmsg+0x1bf/0x4d0 [ 95.102242][ C0] __x64_sys_sendmmsg+0x9d/0x100 [ 95.107265][ C0] do_syscall_64+0xfa/0x790 [ 95.111855][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.117916][ C0] irq event stamp: 182624 [ 95.122244][ C0] hardirqs last enabled at (182624): [] _raw_spin_unlock_irqrestore+0x66/0xe0 [ 95.132754][ C0] hardirqs last disabled at (182623): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 95.142806][ C0] softirqs last enabled at (182544): [] _local_bh_enable+0x1c/0x30 [ 95.152467][ C0] softirqs last disabled at (182545): [] irq_exit+0x19b/0x1e0 [ 95.161690][ C0] [ 95.161690][ C0] other info that might help us debug this: [ 95.169769][ C0] Possible unsafe locking scenario: [ 95.169769][ C0] [ 95.177213][ C0] CPU0 [ 95.180474][ C0] ---- [ 95.183772][ C0] lock(&(&local->client_conns_lock)->rlock); [ 95.189916][ C0] [ 95.193360][ C0] lock(&(&local->client_conns_lock)->rlock); [ 95.199739][ C0] [ 95.199739][ C0] *** DEADLOCK *** [ 95.199739][ C0] [ 95.207878][ C0] 1 lock held by swapper/0/0: [ 95.212534][ C0] #0: ffffffff89bac140 (rcu_callback){....}, at: rcu_core+0x562/0x1390 [ 95.220878][ C0] [ 95.220878][ C0] stack backtrace: [ 95.226758][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-syzkaller #0 [ 95.234408][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.244589][ C0] Call Trace: [ 95.247867][ C0] [ 95.250716][ C0] dump_stack+0x197/0x210 [ 95.255047][ C0] print_usage_bug.cold+0x327/0x378 [ 95.260245][ C0] mark_lock+0xbb4/0x1220 [ 95.264622][ C0] ? kfree+0x10a/0x2c0 [ 95.268772][ C0] ? check_usage_backwards+0x330/0x330 [ 95.274328][ C0] ? __nf_hook_entries_free+0x31/0x40 [ 95.279700][ C0] __lock_acquire+0x1e8e/0x4a00 [ 95.284549][ C0] ? find_held_lock+0x35/0x130 [ 95.289343][ C0] ? __kasan_check_read+0x11/0x20 [ 95.294394][ C0] ? mark_lock+0xc2/0x1220 [ 95.298814][ C0] ? mark_held_locks+0xf0/0xf0 [ 95.303569][ C0] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 95.309476][ C0] lock_acquire+0x190/0x410 [ 95.313993][ C0] ? rxrpc_put_client_conn+0x6ed/0xc90 [ 95.319437][ C0] _raw_spin_lock+0x2f/0x40 [ 95.323935][ C0] ? rxrpc_put_client_conn+0x6ed/0xc90 [ 95.329388][ C0] rxrpc_put_client_conn+0x6ed/0xc90 [ 95.334698][ C0] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 95.340161][ C0] rxrpc_rcu_destroy_call+0xbd/0x200 [ 95.345493][ C0] rcu_core+0x5e1/0x1390 [ 95.349727][ C0] ? __rcu_read_unlock+0x700/0x700 [ 95.354836][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 95.360519][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 95.366628][ C0] ? run_rebalance_domains+0x227/0x2d0 [ 95.372078][ C0] rcu_core_si+0x9/0x10 [ 95.376216][ C0] __do_softirq+0x262/0x98c [ 95.380737][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 95.385721][ C0] irq_exit+0x19b/0x1e0 [ 95.389876][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 95.395429][ C0] apic_timer_interrupt+0xf/0x20 [ 95.400353][ C0] [ 95.403291][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 95.408668][ C0] Code: 48 70 c7 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 44 d3 5b 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 34 d3 5b 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 7e 2f 76 f9 e8 19 [ 95.428280][ C0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 95.436683][ C0] RAX: 1ffffffff1367612 RBX: ffffffff89a7a440 RCX: 0000000000000000 [ 95.444647][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff89a7acd4 [ 95.452603][ C0] RBP: ffffffff89a07d18 R08: ffffffff89a7a440 R09: 0000000000000000 [ 95.460673][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 95.468746][ C0] R13: ffffffff8aa522c0 R14: 0000000000000000 R15: 0000000000000000 [ 95.476841][ C0] ? default_idle+0x4e/0x360 [ 95.481429][ C0] arch_cpu_idle+0xa/0x10 [ 95.485761][ C0] default_idle_call+0x84/0xb0 [ 95.490581][ C0] do_idle+0x3c8/0x6e0 [ 95.494693][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 95.499745][ C0] ? trace_hardirqs_on+0x67/0x240 [ 95.504754][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.510989][ C0] ? debug_smp_processor_id+0x33/0x18a [ 95.516432][ C0] cpu_startup_entry+0x1b/0x20 [ 95.521238][ C0] rest_init+0x23b/0x371 [ 95.525478][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 95.531918][ C0] arch_call_rest_init+0xe/0x1b [ 95.536763][ C0] start_kernel+0x886/0x8c5 [ 95.541298][ C0] ? mem_encrypt_init+0xb/0xb [ 95.546015][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.552245][