Warning: Permanently added '10.128.0.73' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 54.467371] kauditd_printk_skb: 2 callbacks suppressed [ 54.467388] audit: type=1400 audit(1582503246.281:36): avc: denied { map } for pid=7974 comm="syz-executor172" path="/root/syz-executor172755747" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 54.487296] IPVS: ftp: loaded support on port[0] = 21 [ 54.566634] [ 54.568274] ================================ [ 54.572657] WARNING: inconsistent lock state [ 54.577051] 4.19.105-syzkaller #0 Not tainted [ 54.581530] -------------------------------- [ 54.585914] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 54.592047] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 54.597915] 0000000002a8a514 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20 [ 54.608157] {SOFTIRQ-ON-W} state was registered at: [ 54.613170] lock_acquire+0x16f/0x3f0 [ 54.617041] _raw_spin_lock+0x2f/0x40 [ 54.620934] rxrpc_connect_call+0x351/0x4920 [ 54.625455] rxrpc_new_client_call+0x8e7/0x1880 [ 54.630208] rxrpc_do_sendmsg+0xfc3/0x1ca3 [ 54.634525] rxrpc_sendmsg+0x4a0/0x5b0 [ 54.638492] sock_sendmsg+0xd7/0x130 [ 54.642278] ___sys_sendmsg+0x3e2/0x920 [ 54.646329] __sys_sendmmsg+0x1bf/0x4e0 [ 54.650370] __x64_sys_sendmmsg+0x9d/0x100 [ 54.654736] do_syscall_64+0xfd/0x620 [ 54.658638] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.663896] irq event stamp: 154640 [ 54.667532] hardirqs last enabled at (154640): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 54.677316] hardirqs last disabled at (154639): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 54.686673] softirqs last enabled at (154540): [] _local_bh_enable+0x1c/0x30 [ 54.695530] softirqs last disabled at (154541): [] irq_exit+0x180/0x1d0 [ 54.703827] [ 54.703827] other info that might help us debug this: [ 54.710477] Possible unsafe locking scenario: [ 54.710477] [ 54.716520] CPU0 [ 54.719095] ---- [ 54.721665] lock(&(&local->client_conns_lock)->rlock); [ 54.727136] [ 54.729873] lock(&(&local->client_conns_lock)->rlock); [ 54.735480] [ 54.735480] *** DEADLOCK *** [ 54.735480] [ 54.741531] 1 lock held by swapper/1/0: [ 54.745485] #0: 00000000782e65e0 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 [ 54.754239] [ 54.754239] stack backtrace: [ 54.758735] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.105-syzkaller #0 [ 54.765813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.775155] Call Trace: [ 54.777727] [ 54.779867] dump_stack+0x197/0x210 [ 54.783518] print_usage_bug.cold+0x330/0x42a [ 54.787997] ? save_stack_trace+0x1a/0x20 [ 54.792129] mark_lock+0xd1b/0x1370 [ 54.795744] ? check_usage_backwards+0x340/0x340 [ 54.800488] __lock_acquire+0xc62/0x49c0 [ 54.804540] ? mark_held_locks+0x100/0x100 [ 54.808781] ? save_stack+0x45/0xd0 [ 54.812388] ? __kasan_slab_free+0x102/0x150 [ 54.816798] ? kasan_slab_free+0xe/0x10 [ 54.820750] ? kfree+0xcf/0x220 [ 54.824012] ? mark_held_locks+0x100/0x100 [ 54.828275] ? find_held_lock+0x35/0x130 [ 54.832422] ? debug_object_deactivate+0x1e4/0x360 [ 54.837359] ? mark_held_locks+0x100/0x100 [ 54.841859] ? debug_object_deactivate+0x1e4/0x360 [ 54.846775] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 54.851886] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 54.856451] lock_acquire+0x16f/0x3f0 [ 54.861554] ? rxrpc_put_client_conn+0x683/0xc20 [ 54.866294] _raw_spin_lock+0x2f/0x40 [ 54.870075] ? rxrpc_put_client_conn+0x683/0xc20 [ 54.874816] rxrpc_put_client_conn+0x683/0xc20 [ 54.879387] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 54.884135] ? rxrpc_process_call.cold+0x20/0x20 [ 54.888878] rxrpc_rcu_destroy_call+0xbd/0x200 [ 54.893443] rcu_process_callbacks+0xba0/0x1a30 [ 54.898116] ? __rcu_read_unlock+0x170/0x170 [ 54.902512] __do_softirq+0x25c/0x921 [ 54.906295] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.911838] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.917369] irq_exit+0x180/0x1d0 [ 54.920804] smp_apic_timer_interrupt+0x13b/0x550 [ 54.925637] apic_timer_interrupt+0xf/0x20 [ 54.929861] [ 54.932082] RIP: 0010:native_safe_halt+0xe/0x10 [ 54.936734] 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 [ 54.955632] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 54.963408] RAX: 1ffffffff11e4ad4 RBX: ffff8880aa3a43c0 RCX: 0000000000000000 [ 54.970666] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c [ 54.977915] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000 [ 54.985167] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 54.992419] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffff8880aa3a43c0 [ 54.999685] ? default_idle+0x4e/0x320 [ 55.003554] arch_cpu_idle+0xa/0x10 [ 55.007160] default_idle_call+0x36/0x90 [ 55.011215] do_idle+0x30c/0x4d0 [ 55.014560] ? trace_hardirqs_on+0x67/0x220