Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts. executing program [ 110.639453][ T27] kauditd_printk_skb: 4 callbacks suppressed [ 110.639470][ T27] audit: type=1400 audit(1581183627.547:42): avc: denied { map } for pid=10693 comm="syz-executor483" path="/root/syz-executor483647652" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 110.656148][T10694] IPVS: ftp: loaded support on port[0] = 21 [ 110.761096][ C0] [ 110.763439][ C0] ================================ [ 110.768646][ C0] WARNING: inconsistent lock state [ 110.773830][ C0] 5.5.0-syzkaller #0 Not tainted [ 110.778929][ C0] -------------------------------- [ 110.784067][ C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 110.791403][ C0] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 110.797369][ C0] ffff88809db039c8 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x6ed/0xc90 [ 110.808593][ C0] {SOFTIRQ-ON-W} state was registered at: [ 110.814429][ C0] lock_acquire+0x190/0x410 [ 110.819015][ C0] _raw_spin_lock+0x2f/0x40 [ 110.824058][ C0] rxrpc_connect_call+0x358/0x4e30 [ 110.829363][ C0] rxrpc_new_client_call+0x9c0/0x1ad0 [ 110.834817][ C0] rxrpc_do_sendmsg+0xffa/0x1d5f [ 110.839927][ C0] rxrpc_sendmsg+0x4d6/0x5f0 [ 110.844626][ C0] sock_sendmsg+0xd7/0x130 [ 110.849127][ C0] ____sys_sendmsg+0x358/0x880 [ 110.854027][ C0] ___sys_sendmsg+0x100/0x170 [ 110.858785][ C0] __sys_sendmmsg+0x1bf/0x4d0 [ 110.863656][ C0] __x64_sys_sendmmsg+0x9d/0x100 [ 110.868779][ C0] do_syscall_64+0xfa/0x790 [ 110.873400][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 110.879366][ C0] irq event stamp: 209808 [ 110.883689][ C0] hardirqs last enabled at (209808): [] _raw_spin_unlock_irqrestore+0x66/0xe0 [ 110.894700][ C0] hardirqs last disabled at (209807): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 110.904757][ C0] softirqs last enabled at (209780): [] _local_bh_enable+0x1c/0x30 [ 110.914493][ C0] softirqs last disabled at (209781): [] irq_exit+0x19b/0x1e0 [ 110.923662][ C0] [ 110.923662][ C0] other info that might help us debug this: [ 110.931713][ C0] Possible unsafe locking scenario: [ 110.931713][ C0] [ 110.939203][ C0] CPU0 [ 110.942477][ C0] ---- [ 110.945745][ C0] lock(&(&local->client_conns_lock)->rlock); [ 110.951995][ C0] [ 110.955510][ C0] lock(&(&local->client_conns_lock)->rlock); [ 110.962323][ C0] [ 110.962323][ C0] *** DEADLOCK *** [ 110.962323][ C0] [ 110.970481][ C0] 1 lock held by swapper/0/0: [ 110.975273][ C0] #0: ffffffff89bac140 (rcu_callback){....}, at: rcu_core+0x562/0x1390 [ 110.984425][ C0] [ 110.984425][ C0] stack backtrace: [ 110.990443][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-syzkaller #0 [ 110.998070][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.008343][ C0] Call Trace: [ 111.011670][ C0] [ 111.014518][ C0] dump_stack+0x197/0x210 [ 111.018835][ C0] print_usage_bug.cold+0x327/0x378 [ 111.024030][ C0] mark_lock+0xbb4/0x1220 [ 111.028346][ C0] ? put_cred_rcu+0x2b6/0x4b0 [ 111.033055][ C0] ? check_usage_backwards+0x330/0x330 [ 111.038535][ C0] ? rcu_core_si+0x9/0x10 [ 111.042864][ C0] __lock_acquire+0x1e8e/0x4a00 [ 111.047695][ C0] ? find_held_lock+0x35/0x130 [ 111.052452][ C0] ? __kasan_check_read+0x11/0x20 [ 111.057470][ C0] ? mark_lock+0xc2/0x1220 [ 111.061892][ C0] ? mark_held_locks+0xf0/0xf0 [ 111.066713][ C0] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 111.072727][ C0] lock_acquire+0x190/0x410 [ 111.077236][ C0] ? rxrpc_put_client_conn+0x6ed/0xc90 [ 111.082797][ C0] _raw_spin_lock+0x2f/0x40 [ 111.087463][ C0] ? rxrpc_put_client_conn+0x6ed/0xc90 [ 111.092922][ C0] rxrpc_put_client_conn+0x6ed/0xc90 [ 111.098230][ C0] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 111.104010][ C0] rxrpc_rcu_destroy_call+0xbd/0x200 [ 111.109300][ C0] rcu_core+0x5e1/0x1390 [ 111.113726][ C0] ? __rcu_read_unlock+0x700/0x700 [ 111.118860][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 111.124416][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 111.130526][ C0] ? run_rebalance_domains+0x227/0x2d0 [ 111.136216][ C0] rcu_core_si+0x9/0x10 [ 111.140372][ C0] __do_softirq+0x262/0x98c [ 111.144946][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 111.149794][ C0] irq_exit+0x19b/0x1e0 [ 111.154012][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 111.159597][ C0] apic_timer_interrupt+0xf/0x20 [ 111.164529][ C0] [ 111.167681][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 111.173063][ C0] Code: d8 66 c6 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d d4 c9 5a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d c4 c9 5a 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 0e 26 75 f9 e8 09 [ 111.192894][ C0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 111.201604][ C0] RAX: 1ffffffff1367612 RBX: ffffffff89a7a440 RCX: 0000000000000000 [ 111.209582][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff89a7acd4 [ 111.217552][ C0] RBP: ffffffff89a07d18 R08: ffffffff89a7a440 R09: 0000000000000000 [ 111.225648][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 111.233831][ C0] R13: ffffffff8aa58b80 R14: 0000000000000000 R15: 0000000000000000 [ 111.241942][ C0] ? default_idle+0x4e/0x360 [ 111.246560][ C0] arch_cpu_idle+0xa/0x10 [ 111.251036][ C0] default_idle_call+0x84/0xb0 [ 111.255970][ C0] do_idle+0x3c8/0x6e0 [ 111.260033][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 111.265052][ C0] ? trace_hardirqs_on+0x67/0x240 [ 111.270130][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 111.276411][ C0] ? debug_smp_processor_id+0x33/0x18a [ 111.281981][ C0] cpu_startup_entry+0x1b/0x20 [ 111.286875][ C0] rest_init+0x23b/0x371 [ 111.291112][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 111.297622][ C0] arch_call_rest_init+0xe/0x1b [ 111.302671][ C0] start_kernel+0x886/0x8c5 [ 111.307476][ C0] ? mem_encrypt_init+0xb/0xb [ 111.312148][