[ 34.952397] audit: type=1800 audit(1583902347.387:33): pid=7230 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 [ 34.979642] audit: type=1800 audit(1583902347.387:34): pid=7230 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: [ 37.502878] random: sshd: uninitialized urandom read (32 bytes read) [ 37.734903] audit: type=1400 audit(1583902350.167:35): avc: denied { map } for pid=7400 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 [ 37.789850] random: sshd: uninitialized urandom read (32 bytes read) [ 38.573009] random: sshd: uninitialized urandom read (32 bytes read) [ 38.769276] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.150' (ECDSA) to the list of known hosts. [ 44.365814] random: sshd: uninitialized urandom read (32 bytes read) [ 44.488214] audit: type=1400 audit(1583902356.917:36): avc: denied { map } for pid=7413 comm="syz-executor776" path="/root/syz-executor776158105" 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 [ 44.771487] IPVS: ftp: loaded support on port[0] = 21 executing program [ 45.570164] [ 45.571825] ================================ [ 45.576225] WARNING: inconsistent lock state [ 45.580617] 4.14.172-syzkaller #0 Not tainted [ 45.585275] -------------------------------- [ 45.589918] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 45.596058] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 45.601389] (&(&local->client_conns_lock)->rlock){+.?.}, at: [] rxrpc_put_client_conn+0x524/0xa80 [ 45.612319] {SOFTIRQ-ON-W} state was registered at: [ 45.617345] lock_acquire+0x170/0x3f0 [ 45.621224] _raw_spin_lock+0x2a/0x40 [ 45.625092] rxrpc_connect_call+0x2ac/0x3e50 [ 45.629583] rxrpc_new_client_call+0x8d2/0x1410 [ 45.634388] rxrpc_do_sendmsg+0x8a1/0x1019 [ 45.638711] rxrpc_sendmsg+0x47d/0x5a0 [ 45.642676] sock_sendmsg+0xc5/0x100 [ 45.646464] ___sys_sendmsg+0x349/0x840 [ 45.650503] __sys_sendmmsg+0x129/0x330 [ 45.654544] SyS_sendmmsg+0x2f/0x50 [ 45.658249] do_syscall_64+0x1d5/0x640 [ 45.662259] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 45.667527] irq event stamp: 173308 [ 45.671144] hardirqs last enabled at (173308): [] _raw_spin_unlock_irqrestore+0x67/0xe0 [ 45.680917] hardirqs last disabled at (173307): [] _raw_spin_lock_irqsave+0x66/0xbf [ 45.690356] softirqs last enabled at (173280): [] irq_enter+0xbd/0xd0 [ 45.699172] softirqs last disabled at (173281): [] irq_exit+0x15b/0x1a0 [ 45.708078] [ 45.708078] other info that might help us debug this: [ 45.714733] Possible unsafe locking scenario: [ 45.714733] [ 45.720776] CPU0 [ 45.723345] ---- [ 45.725997] lock(&(&local->client_conns_lock)->rlock); [ 45.731432] [ 45.734170] lock(&(&local->client_conns_lock)->rlock); [ 45.739783] [ 45.739783] *** DEADLOCK *** [ 45.739783] [ 45.745910] 1 lock held by swapper/1/0: [ 45.749890] #0: (rcu_callback){....}, at: [] rcu_process_callbacks+0x866/0x1190 [ 45.759337] [ 45.759337] stack backtrace: [ 45.763811] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.14.172-syzkaller #0 [ 45.770891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.780229] Call Trace: [ 45.782797] [ 45.784951] dump_stack+0x13e/0x194 [ 45.788569] print_usage_bug.cold+0x327/0x425 [ 45.793043] mark_lock+0xd21/0x10b0 [ 45.796648] ? check_usage_backwards+0x2f0/0x2f0 [ 45.801391] __lock_acquire+0xb57/0x4620 [ 45.805429] ? trace_hardirqs_on+0x10/0x10 [ 45.809638] ? trace_hardirqs_on+0x10/0x10 [ 45.813849] ? trace_hardirqs_on+0x10/0x10 [ 45.818079] ? lock_acquire+0x170/0x3f0 [ 45.822028] ? save_trace+0x290/0x290 [ 45.825831] ? _raw_spin_unlock_irqrestore+0x67/0xe0 [ 45.830919] lock_acquire+0x170/0x3f0 [ 45.834812] ? rxrpc_put_client_conn+0x524/0xa80 [ 45.839584] _raw_spin_lock+0x2a/0x40 [ 45.843431] ? rxrpc_put_client_conn+0x524/0xa80 [ 45.848183] rxrpc_put_client_conn+0x524/0xa80 [ 45.852746] ? rxrpc_rcu_destroy_call+0x83/0x190 [ 45.857495] ? rxrpc_start_call_timer+0x1f0/0x1f0 [ 45.862320] rxrpc_rcu_destroy_call+0x83/0x190 [ 45.866896] rcu_process_callbacks+0x792/0x1190 [ 45.871567] ? call_rcu_sched+0x10/0x10 [ 45.875526] __do_softirq+0x254/0x9bf [ 45.879312] ? check_preemption_disabled+0x35/0x240 [ 45.884324] irq_exit+0x15b/0x1a0 [ 45.887908] smp_apic_timer_interrupt+0x141/0x5e0 [ 45.892739] apic_timer_interrupt+0x8f/0xa0 [ 45.897141] [ 45.899365] RIP: 0010:native_safe_halt+0xe/0x10 [ 45.904054] RSP: 0018:ffff8880a989fee0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 45.911869] RAX: 1ffffffff0fa2ce4 RBX: dffffc0000000000 RCX: 0000000000000000 [ 45.919316] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a988abbc [ 45.926678] RBP: ffffffff87d16710 R08: 1ffffffff1124001 R09: 0000000000000000 [ 45.933941] R10: 0000000000000000 R11: 0000000000000000 R12: ffffed1015311468 [ 45.941488] R13: ffff8880a988a340 R14: 0000000000000000 R15: 0000000000000000 [ 45.948769] default_idle+0x47/0x370 [ 45.952483] do_idle+0x250/0x3c0 [ 45.955828] cpu_startup_entry+0x14/0x20 [ 45.959878] secondary_startup_64+0xa5/0xb0