[ 33.671528] audit: type=1800 audit(1584911235.595:33): pid=7156 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0
[ 33.699807] audit: type=1800 audit(1584911235.595:34): pid=7156 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 36.036447] random: sshd: uninitialized urandom read (32 bytes read)
[ 36.247861] audit: type=1400 audit(1584911238.165:35): avc: denied { map } for pid=7328 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1
[ 36.298637] random: sshd: uninitialized urandom read (32 bytes read)
[ 37.003390] random: sshd: uninitialized urandom read (32 bytes read)
[ 37.188500] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts.
[ 42.775325] random: sshd: uninitialized urandom read (32 bytes read)
[ 42.889985] audit: type=1400 audit(1584911244.805:36): avc: denied { map } for pid=7340 comm="syz-executor713" path="/root/syz-executor713332696" 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
[ 43.171011] IPVS: ftp: loaded support on port[0] = 21
executing program
[ 44.020091]
[ 44.021761] ================================
[ 44.026146] WARNING: inconsistent lock state
[ 44.030530] 4.14.174-syzkaller #0 Not tainted
[ 44.034997] --------------------------------
[ 44.039379] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 44.045501] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 44.050750] (&(&local->client_conns_lock)->rlock){+.?.}, at: [<ffffffff85b9bf44>] rxrpc_put_client_conn+0x524/0xa80
[ 44.061397] {SOFTIRQ-ON-W} state was registered at:
[ 44.066394] lock_acquire+0x170/0x3f0
[ 44.070273] _raw_spin_lock+0x2a/0x40
[ 44.074137] rxrpc_connect_call+0x2ac/0x3e50
[ 44.078608] rxrpc_new_client_call+0x8d2/0x1410
[ 44.083340] rxrpc_do_sendmsg+0x8a1/0x1019
[ 44.087731] rxrpc_sendmsg+0x47d/0x5a0
[ 44.091680] sock_sendmsg+0xc5/0x100
[ 44.095458] ___sys_sendmsg+0x349/0x840
[ 44.099493] __sys_sendmmsg+0x129/0x330
[ 44.103529] SyS_sendmmsg+0x2f/0x50
[ 44.107410] do_syscall_64+0x1d5/0x640
[ 44.111362] entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 44.116610] irq event stamp: 252084
[ 44.120224] hardirqs last enabled at (252084): [<ffffffff86407ad7>] _raw_spin_unlock_irqrestore+0x67/0xe0
[ 44.130016] hardirqs last disabled at (252083): [<ffffffff86407d46>] _raw_spin_lock_irqsave+0x66/0xbf
[ 44.139393] softirqs last enabled at (252064): [<ffffffff81374d5d>] irq_enter+0xbd/0xd0
[ 44.147603] softirqs last disabled at (252065): [<ffffffff81374ecb>] irq_exit+0x15b/0x1a0
[ 44.155891]
[ 44.155891] other info that might help us debug this:
[ 44.162544] Possible unsafe locking scenario:
[ 44.162544]
[ 44.168576] CPU0
[ 44.171131] ----
[ 44.173687] lock(&(&local->client_conns_lock)->rlock);
[ 44.179249] <Interrupt>
[ 44.182018] lock(&(&local->client_conns_lock)->rlock);
[ 44.187622]
[ 44.187622] *** DEADLOCK ***
[ 44.187622]
[ 44.193659] 1 lock held by swapper/0/0:
[ 44.197622] #0: (rcu_callback){....}, at: [<ffffffff814be906>] rcu_process_callbacks+0x866/0x1190
[ 44.207324]
[ 44.207324] stack backtrace:
[ 44.211798] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.174-syzkaller #0
[ 44.218887] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 44.228233] Call Trace:
[ 44.230796] <IRQ>
[ 44.232929] dump_stack+0x13e/0x194
[ 44.236537] print_usage_bug.cold+0x327/0x425
[ 44.241023] mark_lock+0xd21/0x10b0
[ 44.244680] ? check_usage_backwards+0x2f0/0x2f0
[ 44.249455] __lock_acquire+0xb57/0x4620
[ 44.253495] ? trace_hardirqs_on+0x10/0x10
[ 44.257718] ? trace_hardirqs_on+0x10/0x10
[ 44.261930] ? trace_hardirqs_on+0x10/0x10
[ 44.266160] ? lock_acquire+0x170/0x3f0
[ 44.270114] ? save_trace+0x290/0x290
[ 44.273903] ? _raw_spin_unlock_irqrestore+0x67/0xe0
[ 44.278999] lock_acquire+0x170/0x3f0
[ 44.282783] ? rxrpc_put_client_conn+0x524/0xa80
[ 44.287518] _raw_spin_lock+0x2a/0x40
[ 44.291318] ? rxrpc_put_client_conn+0x524/0xa80
[ 44.296051] rxrpc_put_client_conn+0x524/0xa80
[ 44.300656] ? rxrpc_rcu_destroy_call+0x83/0x190
[ 44.305389] ? rxrpc_start_call_timer+0x1f0/0x1f0
[ 44.310252] rxrpc_rcu_destroy_call+0x83/0x190
[ 44.314813] rcu_process_callbacks+0x792/0x1190
[ 44.319472] ? call_rcu_sched+0x10/0x10
[ 44.323426] __do_softirq+0x254/0x9bf
[ 44.327205] ? check_preemption_disabled+0x35/0x240
[ 44.332199] irq_exit+0x15b/0x1a0
[ 44.335629] smp_apic_timer_interrupt+0x141/0x5e0
[ 44.340449] apic_timer_interrupt+0x8f/0xa0
[ 44.344763] </IRQ>
[ 44.346974] RIP: 0010:native_safe_halt+0xe/0x10
[ 44.351670] RSP: 0018:ffffffff87c07e78 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
[ 44.359468] RAX: 1ffffffff0fa2cd4 RBX: dffffc0000000000 RCX: 0000000000000000
[ 44.366721] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff87c76abc
[ 44.373977] RBP: ffffffff87d16690 R08: 1ffffffff1124101 R09: 0000000000000000
[ 44.381226] R10: 0000000000000000 R11: 0000000000000000 R12: fffffbfff0f8ec48
[ 44.388477] R13: ffffffff87c76240 R14: 0000000000000000 R15: 0000000000000000
[ 44.395743] default_idle+0x47/0x370
[ 44.399473] do_idle+0x250/0x3c0
[ 44.402855] ? trace_event_define_fields_x86_irq_vector+0x28/0x28
[ 44.409079] cpu_startup_entry+0x14/0x20
[ 44.413133] start_kernel+0x659/0x676
[ 44.416911] ? mem_encrypt_init+0x5/0x5
[ 44.420874