Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 57.123365] kauditd_printk_skb: 5 callbacks suppressed [ 57.123382] audit: type=1400 audit(1582383398.048:36): avc: denied { map } for pid=8294 comm="syz-executor163" path="/root/syz-executor163126847" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 57.144091] IPVS: ftp: loaded support on port[0] = 21 [ 57.234577] [ 57.236353] ================================ [ 57.240754] WARNING: inconsistent lock state [ 57.245171] 4.19.105-syzkaller #0 Not tainted [ 57.249653] -------------------------------- [ 57.254163] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 57.260308] ksoftirqd/1/18 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 57.265835] 00000000b7445296 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20 [ 57.276235] {SOFTIRQ-ON-W} state was registered at: [ 57.281281] lock_acquire+0x16f/0x3f0 [ 57.285294] _raw_spin_lock+0x2f/0x40 [ 57.289176] rxrpc_connect_call+0x351/0x4920 [ 57.293723] rxrpc_new_client_call+0x8e7/0x1880 [ 57.298540] rxrpc_do_sendmsg+0xfc3/0x1ca3 [ 57.303002] rxrpc_sendmsg+0x4a0/0x5b0 [ 57.306982] sock_sendmsg+0xd7/0x130 [ 57.310819] ___sys_sendmsg+0x3e2/0x920 [ 57.314875] __sys_sendmmsg+0x1bf/0x4e0 [ 57.319111] __x64_sys_sendmmsg+0x9d/0x100 [ 57.323443] do_syscall_64+0xfd/0x620 [ 57.327700] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.333090] irq event stamp: 591748 [ 57.336732] hardirqs last enabled at (591748): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 57.346755] hardirqs last disabled at (591747): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 57.356268] softirqs last enabled at (591706): [] __do_softirq+0x633/0x921 [ 57.364940] softirqs last disabled at (591711): [] run_ksoftirqd+0x8e/0x110 [ 57.373712] [ 57.373712] other info that might help us debug this: [ 57.380501] Possible unsafe locking scenario: [ 57.380501] [ 57.386573] CPU0 [ 57.389148] ---- [ 57.391738] lock(&(&local->client_conns_lock)->rlock); [ 57.397279] [ 57.400071] lock(&(&local->client_conns_lock)->rlock); [ 57.405693] [ 57.405693] *** DEADLOCK *** [ 57.405693] [ 57.411769] 1 lock held by ksoftirqd/1/18: [ 57.416014] #0: 00000000b102653a (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 [ 57.425103] [ 57.425103] stack backtrace: [ 57.429605] CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 4.19.105-syzkaller #0 [ 57.437106] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.446570] Call Trace: [ 57.449166] dump_stack+0x197/0x210 [ 57.452804] print_usage_bug.cold+0x330/0x42a [ 57.457645] ? save_stack_trace+0x1a/0x20 [ 57.461956] mark_lock+0xd1b/0x1370 [ 57.465589] ? check_usage_backwards+0x340/0x340 [ 57.470345] __lock_acquire+0xc62/0x49c0 [ 57.474411] ? mark_held_locks+0x100/0x100 [ 57.478674] ? save_stack+0x45/0xd0 [ 57.482343] ? __kasan_slab_free+0x102/0x150 [ 57.486868] ? kasan_slab_free+0xe/0x10 [ 57.490852] ? kfree+0xcf/0x220 [ 57.494284] ? mark_held_locks+0x100/0x100 [ 57.498520] ? find_held_lock+0x35/0x130 [ 57.502735] ? debug_object_deactivate+0x1e4/0x360 [ 57.507677] ? mark_held_locks+0x100/0x100 [ 57.511981] ? debug_object_deactivate+0x1e4/0x360 [ 57.517067] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 57.522175] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 57.526762] lock_acquire+0x16f/0x3f0 [ 57.530592] ? rxrpc_put_client_conn+0x683/0xc20 [ 57.535683] _raw_spin_lock+0x2f/0x40 [ 57.539490] ? rxrpc_put_client_conn+0x683/0xc20 [ 57.544313] rxrpc_put_client_conn+0x683/0xc20 [ 57.549222] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 57.554181] ? rxrpc_process_call.cold+0x20/0x20 [ 57.559112] rxrpc_rcu_destroy_call+0xbd/0x200 [ 57.563710] rcu_process_callbacks+0xba0/0x1a30 [ 57.568412] ? __rcu_read_unlock+0x170/0x170 [ 57.572832] ? sched_clock+0x2e/0x50 [ 57.576565] __do_softirq+0x25c/0x921 [ 57.580372] ? firmware_map_remove+0x1a6/0x1a6 [ 57.585189] ? takeover_tasklets+0x7b0/0x7b0 [ 57.589616] run_ksoftirqd+0x8e/0x110 [ 57.593513] smpboot_thread_fn+0x6a3/0xa30 [ 57.597798] ? sort_range+0x30/0x30 [ 57.601432] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 57.607086] ? __kthread_parkme+0xfb/0x1b0 [ 57.611315] kthread+0x354/0x420 [ 57.614853] ? sort_range+0x30/0x30 [ 57.618508] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 57.624167] ret_from_fork+0x24/0x30