[ 32.639906] audit: type=1800 audit(1581719943.408:33): pid=7153 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 [ 32.672471] audit: type=1800 audit(1581719943.408:34): pid=7153 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: [ 36.154064] random: sshd: uninitialized urandom read (32 bytes read) [ 36.460889] audit: type=1400 audit(1581719947.238:35): avc: denied { map } for pid=7326 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 [ 36.512975] random: sshd: uninitialized urandom read (32 bytes read) [ 37.230583] random: sshd: uninitialized urandom read (32 bytes read) [ 37.421289] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.2' (ECDSA) to the list of known hosts. [ 42.986604] random: sshd: uninitialized urandom read (32 bytes read) [ 43.106998] audit: type=1400 audit(1581719953.878:36): avc: denied { map } for pid=7338 comm="syz-executor590" path="/root/syz-executor590385341" 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 [ 43.360938] IPVS: ftp: loaded support on port[0] = 21 executing program [ 44.160150] [ 44.161983] ================================ [ 44.166394] WARNING: inconsistent lock state [ 44.170796] 4.14.171-syzkaller #0 Not tainted [ 44.175420] -------------------------------- [ 44.179985] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 44.186156] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 44.191549] (&(&local->client_conns_lock)->rlock){+.?.}, at: [] rxrpc_put_client_conn+0x538/0xaa0 [ 44.202374] {SOFTIRQ-ON-W} state was registered at: [ 44.207388] __lock_acquire+0xc33/0x4620 [ 44.211529] lock_acquire+0x16f/0x430 [ 44.215416] _raw_spin_lock+0x2f/0x40 [ 44.219472] rxrpc_connect_call+0x2f5/0x41a0 [ 44.223957] rxrpc_new_client_call+0x8f7/0x1420 [ 44.228874] rxrpc_do_sendmsg+0x92a/0x1109 [ 44.233192] rxrpc_sendmsg+0x4d1/0x610 [ 44.237152] sock_sendmsg+0xce/0x110 [ 44.240953] ___sys_sendmsg+0x349/0x840 [ 44.245014] __sys_sendmmsg+0x152/0x3a0 [ 44.249060] SyS_sendmmsg+0x35/0x60 [ 44.252770] do_syscall_64+0x1e8/0x640 [ 44.256841] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 44.262608] irq event stamp: 272930 [ 44.266499] hardirqs last enabled at (272930): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 44.276404] hardirqs last disabled at (272929): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 44.285795] softirqs last enabled at (272894): [] _local_bh_enable+0x1c/0x30 [ 44.294648] softirqs last disabled at (272895): [] irq_exit+0x160/0x1b0 [ 44.302968] [ 44.302968] other info that might help us debug this: [ 44.309615] Possible unsafe locking scenario: [ 44.309615] [ 44.315665] CPU0 [ 44.318230] ---- [ 44.320805] lock(&(&local->client_conns_lock)->rlock); [ 44.326378] [ 44.329120] lock(&(&local->client_conns_lock)->rlock); [ 44.334754] [ 44.334754] *** DEADLOCK *** [ 44.334754] [ 44.341184] 1 lock held by swapper/0/0: [ 44.345150] #0: (rcu_callback){....}, at: [] rcu_process_callbacks+0x893/0x12b0 [ 44.354513] [ 44.354513] stack backtrace: [ 44.359064] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.14.171-syzkaller #0 [ 44.366420] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.375780] Call Trace: [ 44.378364] [ 44.380512] dump_stack+0x142/0x197 [ 44.384138] print_usage_bug.cold+0x330/0x42a [ 44.388632] ? save_stack_trace+0x16/0x20 [ 44.392781] mark_lock+0xdbd/0x1240 [ 44.396472] ? check_usage_backwards+0x2f0/0x2f0 [ 44.401374] __lock_acquire+0xb57/0x4620 [ 44.405441] ? trace_hardirqs_on+0x10/0x10 [ 44.409684] ? __do_softirq+0x244/0x9a0 [ 44.413660] ? irq_exit+0x160/0x1b0 [ 44.417278] ? trace_hardirqs_on+0x10/0x10 [ 44.421623] ? find_held_lock+0x35/0x130 [ 44.425682] ? trace_hardirqs_on+0x10/0x10 [ 44.429914] ? save_trace+0x290/0x290 [ 44.433885] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 44.439100] lock_acquire+0x16f/0x430 [ 44.442994] ? rxrpc_put_client_conn+0x538/0xaa0 [ 44.447760] _raw_spin_lock+0x2f/0x40 [ 44.451654] ? rxrpc_put_client_conn+0x538/0xaa0 [ 44.456571] rxrpc_put_client_conn+0x538/0xaa0 [ 44.461409] ? rxrpc_rcu_destroy_call+0x88/0x190 [ 44.466223] rxrpc_rcu_destroy_call+0x88/0x190 [ 44.470813] ? rxrpc_start_call_timer+0x200/0x200 [ 44.475880] rcu_process_callbacks+0x7b8/0x12b0 [ 44.480739] ? call_rcu_sched+0x20/0x20 [ 44.484793] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 44.490447] __do_softirq+0x244/0x9a0 [ 44.494408] ? sched_clock+0x2e/0x50 [ 44.498122] irq_exit+0x160/0x1b0 [ 44.501753] smp_apic_timer_interrupt+0x146/0x5e0 [ 44.506682] apic_timer_interrupt+0x96/0xa0 [ 44.510991] [ 44.513345] RIP: 0010:native_safe_halt+0xe/0x10 [ 44.518109] RSP: 0018:ffffffff87e07de8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10 [ 44.529818] RAX: 1ffffffff0fe2ce4 RBX: ffffffff87e76240 RCX: 0000000000000000 [ 44.537334] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff87e76abc [ 44.544601] RBP: ffffffff87e07e10 R08: 1ffffffff1164201 R09: 0000000000000000 [ 44.551892] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff87f16710 [ 44.559338] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87e76240 [ 44.566958] ? default_idle+0x4c/0x370 [ 44.570950] arch_cpu_idle+0xa/0x10 [ 44.574571] default_idle_call+0x36/0x90 [ 44.578635] do_idle+0x262/0x3d0 [ 44.581986] cpu_startup_entry+0x1b/0x20 [ 44.586163] rest_init+0x1d9/0x1e2 [ 44.589708] ? trace_event_define_fields_x86_irq_vector+0x2c/0x2c [ 44.595947] start_kernel+0x65f/0x67d [ 44.599731] ? mem_encrypt_init+0xb/0xb [ 44.603802] ? x86_family+0x32/0x40 [ 44.607437] ? load_ucode_bsp+0x1ea/0x1f6 [ 44