Warning: Permanently added '10.128.0.157' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.359672] kauditd_printk_skb: 5 callbacks suppressed [ 52.359687] audit: type=1400 audit(1582246026.710:36): avc: denied { map } for pid=8106 comm="syz-executor278" path="/root/syz-executor278014016" 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 [ 52.372733] IPVS: ftp: loaded support on port[0] = 21 [ 52.464146] [ 52.465798] ================================ [ 52.470191] WARNING: inconsistent lock state [ 52.474584] 4.19.105-syzkaller #0 Not tainted [ 52.479062] -------------------------------- [ 52.483503] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 52.489651] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 52.494954] 0000000026cb2d87 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20 [ 52.505228] {SOFTIRQ-ON-W} state was registered at: [ 52.510242] lock_acquire+0x16f/0x3f0 [ 52.514124] _raw_spin_lock+0x2f/0x40 [ 52.518137] rxrpc_connect_call+0x351/0x4920 [ 52.522804] rxrpc_new_client_call+0x8e7/0x1880 [ 52.527555] rxrpc_do_sendmsg+0xfc3/0x1ca3 [ 52.531930] rxrpc_sendmsg+0x4a0/0x5b0 [ 52.535898] sock_sendmsg+0xd7/0x130 [ 52.539785] ___sys_sendmsg+0x3e2/0x920 [ 52.543863] __sys_sendmmsg+0x1bf/0x4e0 [ 52.547948] __x64_sys_sendmmsg+0x9d/0x100 [ 52.552266] do_syscall_64+0xfd/0x620 [ 52.556142] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.561403] irq event stamp: 187964 [ 52.566976] hardirqs last enabled at (187964): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 52.576768] hardirqs last disabled at (187963): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 52.586126] softirqs last enabled at (187832): [] _local_bh_enable+0x1c/0x30 [ 52.594962] softirqs last disabled at (187833): [] irq_exit+0x180/0x1d0 [ 52.603363] [ 52.603363] other info that might help us debug this: [ 52.610148] Possible unsafe locking scenario: [ 52.610148] [ 52.616187] CPU0 [ 52.618761] ---- [ 52.621333] lock(&(&local->client_conns_lock)->rlock); [ 52.626773] [ 52.629510] lock(&(&local->client_conns_lock)->rlock); [ 52.635127] [ 52.635127] *** DEADLOCK *** [ 52.635127] [ 52.641219] 1 lock held by swapper/0/0: [ 52.645178] #0: 0000000098dc4e67 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 [ 52.653976] [ 52.653976] stack backtrace: [ 52.658475] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.105-syzkaller #0 [ 52.665562] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.674903] Call Trace: [ 52.677489] [ 52.679684] dump_stack+0x197/0x210 [ 52.683401] print_usage_bug.cold+0x330/0x42a [ 52.687884] ? save_stack_trace+0x1a/0x20 [ 52.692034] mark_lock+0xd1b/0x1370 [ 52.695659] ? check_usage_backwards+0x340/0x340 [ 52.700407] __lock_acquire+0xc62/0x49c0 [ 52.704468] ? mark_held_locks+0x100/0x100 [ 52.708688] ? save_stack+0x45/0xd0 [ 52.712312] ? __kasan_slab_free+0x102/0x150 [ 52.716705] ? kasan_slab_free+0xe/0x10 [ 52.720673] ? kfree+0xcf/0x220 [ 52.723950] ? mark_held_locks+0x100/0x100 [ 52.728182] ? find_held_lock+0x35/0x130 [ 52.732231] ? debug_object_deactivate+0x1e4/0x360 [ 52.737160] ? mark_held_locks+0x100/0x100 [ 52.741380] ? debug_object_deactivate+0x1e4/0x360 [ 52.746305] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 52.751415] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 52.755996] lock_acquire+0x16f/0x3f0 [ 52.759805] ? rxrpc_put_client_conn+0x683/0xc20 [ 52.764562] _raw_spin_lock+0x2f/0x40 [ 52.768347] ? rxrpc_put_client_conn+0x683/0xc20 [ 52.773104] rxrpc_put_client_conn+0x683/0xc20 [ 52.777683] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 52.782485] ? rxrpc_process_call.cold+0x20/0x20 [ 52.787244] rxrpc_rcu_destroy_call+0xbd/0x200 [ 52.791827] rcu_process_callbacks+0xba0/0x1a30 [ 52.796511] ? __rcu_read_unlock+0x170/0x170 [ 52.800910] __do_softirq+0x25c/0x921 [ 52.804785] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.810415] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.816047] irq_exit+0x180/0x1d0 [ 52.819510] smp_apic_timer_interrupt+0x13b/0x550 [ 52.824402] apic_timer_interrupt+0xf/0x20 [ 52.828652] [ 52.830888] RIP: 0010:native_safe_halt+0xe/0x10 [ 52.835548] Code: ff ff 48 89 df e8 92 f8 4d fa eb 82 e9 07 00 00 00 0f 00 2d 74 61 53 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 64 61 53 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 be cc 04 fa e8 d9 [ 52.854487] RSP: 0018:ffffffff88e07cb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 52.862389] RAX: 1ffffffff11e4ad4 RBX: ffffffff88e79ec0 RCX: 0000000000000000 [ 52.869789] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff88e7a73c [ 52.877060] RBP: ffffffff88e07ce0 R08: ffffffff88e79ec0 R09: 0000000000000000 [ 52.884424] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 52.891704] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffffffff88e79ec0 [ 52.899053] ? default_idle+0x4e/0x320 [ 52.902947] arch_cpu_idle+0xa/0x10 [ 52.906564] default_idle_call+0x36/0x90 [ 52.910615] do_idle+0x30c/0x4d0 [ 52.913988] ? arch_cpu_idle_exit+0x80/0x80 [ 52.918294] ? check_preemption_disabled+0x48/0x290 [ 52.923295] cpu_startup_entry+0xc8/0xe0 [ 52.927366] ? cpu_in_idle+0x20/0x20 [ 52.931066] rest_init+0x219/0x222 [ 52.934592] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4 [ 52.941238] start_kernel+0x7ec/0x825 [ 52.945022] ? mem_encrypt_init+0xb/0xb [ 52.948980] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.954500] ? x86_family+0x41/0x50 [ 52.958108] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 52.963633] x86_64_start_res