[ 41.073759] audit: type=1800 audit(1582916907.767:33): pid=7399 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 [ 41.097234] audit: type=1800 audit(1582916907.767:34): pid=7399 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: [ 43.747931] random: sshd: uninitialized urandom read (32 bytes read) [ 44.039328] audit: type=1400 audit(1582916910.727:35): avc: denied { map } for pid=7573 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 [ 44.092353] random: sshd: uninitialized urandom read (32 bytes read) [ 44.851056] random: sshd: uninitialized urandom read (32 bytes read) [ 45.050417] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.156' (ECDSA) to the list of known hosts. [ 50.642187] random: sshd: uninitialized urandom read (32 bytes read) [ 50.768887] audit: type=1400 audit(1582916917.457:36): avc: denied { map } for pid=7585 comm="syz-executor642" path="/root/syz-executor642505754" 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 [ 51.001204] IPVS: ftp: loaded support on port[0] = 21 executing program [ 51.840130] [ 51.841788] ================================ [ 51.846178] WARNING: inconsistent lock state [ 51.850674] 4.14.172-syzkaller #0 Not tainted [ 51.855152] -------------------------------- [ 51.859596] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 51.865734] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 51.871003] (&(&local->client_conns_lock)->rlock){+.?.}, at: [] rxrpc_put_client_conn+0x524/0xa80 [ 51.881696] {SOFTIRQ-ON-W} state was registered at: [ 51.886731] lock_acquire+0x170/0x3f0 [ 51.890607] _raw_spin_lock+0x2a/0x40 [ 51.894489] rxrpc_connect_call+0x2ac/0x3e50 [ 51.899111] rxrpc_new_client_call+0x8d2/0x1410 [ 51.904059] rxrpc_do_sendmsg+0x8a1/0x1019 [ 51.909437] rxrpc_sendmsg+0x47d/0x5a0 [ 51.913493] sock_sendmsg+0xc5/0x100 [ 51.917321] ___sys_sendmsg+0x349/0x840 [ 51.921382] __sys_sendmmsg+0x129/0x330 [ 51.925421] SyS_sendmmsg+0x2f/0x50 [ 51.929144] do_syscall_64+0x1d5/0x640 [ 51.933162] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 51.938662] irq event stamp: 194338 [ 51.942280] hardirqs last enabled at (194338): [] _raw_spin_unlock_irqrestore+0x67/0xe0 [ 51.952152] hardirqs last disabled at (194337): [] _raw_spin_lock_irqsave+0x66/0xbf [ 51.961591] softirqs last enabled at (194318): [] irq_enter+0xbd/0xd0 [ 51.969817] softirqs last disabled at (194319): [] irq_exit+0x15b/0x1a0 [ 51.978118] [ 51.978118] other info that might help us debug this: [ 51.984819] Possible unsafe locking scenario: [ 51.984819] [ 51.990869] CPU0 [ 51.993432] ---- [ 51.996169] lock(&(&local->client_conns_lock)->rlock); [ 52.001620] [ 52.004362] lock(&(&local->client_conns_lock)->rlock); [ 52.010100] [ 52.010100] *** DEADLOCK *** [ 52.010100] [ 52.016237] 1 lock held by swapper/1/0: [ 52.020193] #0: (rcu_callback){....}, at: [] rcu_process_callbacks+0x866/0x1190 [ 52.029519] [ 52.029519] stack backtrace: [ 52.034019] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.172-syzkaller #0 [ 52.041112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.050583] Call Trace: [ 52.053174] [ 52.055332] dump_stack+0x13e/0x194 [ 52.058977] print_usage_bug.cold+0x327/0x425 [ 52.063457] mark_lock+0xd21/0x10b0 [ 52.067164] ? check_usage_backwards+0x2f0/0x2f0 [ 52.071912] __lock_acquire+0xb57/0x4620 [ 52.076050] ? trace_hardirqs_on+0x10/0x10 [ 52.080331] ? trace_hardirqs_on+0x10/0x10 [ 52.085036] ? trace_hardirqs_on+0x10/0x10 [ 52.089296] ? lock_acquire+0x170/0x3f0 [ 52.093250] ? save_trace+0x290/0x290 [ 52.097049] ? _raw_spin_unlock_irqrestore+0x67/0xe0 [ 52.102146] lock_acquire+0x170/0x3f0 [ 52.105949] ? rxrpc_put_client_conn+0x524/0xa80 [ 52.110702] _raw_spin_lock+0x2a/0x40 [ 52.114620] ? rxrpc_put_client_conn+0x524/0xa80 [ 52.119377] rxrpc_put_client_conn+0x524/0xa80 [ 52.123973] ? rxrpc_rcu_destroy_call+0x83/0x190 [ 52.128811] ? rxrpc_start_call_timer+0x1f0/0x1f0 [ 52.133653] rxrpc_rcu_destroy_call+0x83/0x190 [ 52.138252] rcu_process_callbacks+0x792/0x1190 [ 52.142910] ? call_rcu_sched+0x10/0x10 [ 52.147118] __do_softirq+0x254/0x9bf [ 52.151078] ? check_preemption_disabled+0x35/0x240 [ 52.156217] irq_exit+0x15b/0x1a0 [ 52.159670] smp_apic_timer_interrupt+0x141/0x5e0 [ 52.164562] apic_timer_interrupt+0x8f/0xa0 [ 52.168936] [ 52.171247] RIP: 0010:native_safe_halt+0xe/0x10 [ 52.176000] RSP: 0018:ffff8880a989fee0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 52.183975] RAX: 1ffffffff0fa2ce4 RBX: dffffc0000000000 RCX: 0000000000000000 [ 52.191619] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a988abbc [ 52.199019] RBP: ffffffff87d16710 R08: 1ffffffff1124101 R09: 0000000000000000 [ 52.206281] R10: 0000000000000000 R11: 0000000000000000 R12: ffffed1015311468 [ 52.213758] R13: ffff8880a988a340 R14: 0000000000000000 R15: 0000000000000000 [ 52.221027] default_idle+0x47/0x370 [ 52.224741] do_idle+0x250/0x3c0 [ 52.228344] cpu_startup_entry+0x14/0x20 [ 52.232429] secondary_startup_64+0xa5/0xb0