Starting mcstransd: [ 99.608568][ T26] audit: type=1400 audit(1581168637.227:37): avc: denied { watch } for pid=10352 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 99.634386][ T26] audit: type=1400 audit(1581168637.227:38): avc: denied { watch } for pid=10352 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 104.144404][ T26] kauditd_printk_skb: 2 callbacks suppressed [ 104.144420][ T26] audit: type=1400 audit(1581168641.767:41): avc: denied { map } for pid=10441 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 Warning: Permanently added '10.128.0.191' (ECDSA) to the list of known hosts. executing program [ 110.993765][ T26] audit: type=1400 audit(1581168648.617:42): avc: denied { map } for pid=10453 comm="syz-executor195" path="/root/syz-executor195087447" 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 [ 111.010041][T10454] IPVS: ftp: loaded support on port[0] = 21 [ 111.112172][ C0] [ 111.114584][ C0] ================================ [ 111.119736][ C0] WARNING: inconsistent lock state [ 111.124962][ C0] 5.5.0-syzkaller #0 Not tainted [ 111.130000][ C0] -------------------------------- [ 111.135175][ C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 111.142029][ C0] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 111.148140][ C0] ffff8880965259c8 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x6ed/0xc90 [ 111.159161][ C0] {SOFTIRQ-ON-W} state was registered at: [ 111.164885][ C0] lock_acquire+0x190/0x410 [ 111.169469][ C0] _raw_spin_lock+0x2f/0x40 [ 111.174046][ C0] rxrpc_connect_call+0x358/0x4e30 [ 111.179311][ C0] rxrpc_new_client_call+0x9c0/0x1ad0 [ 111.184873][ C0] rxrpc_do_sendmsg+0xffa/0x1d5f [ 111.190031][ C0] rxrpc_sendmsg+0x4d6/0x5f0 [ 111.194698][ C0] sock_sendmsg+0xd7/0x130 [ 111.199402][ C0] ____sys_sendmsg+0x358/0x880 [ 111.204366][ C0] ___sys_sendmsg+0x100/0x170 [ 111.209122][ C0] __sys_sendmmsg+0x1bf/0x4d0 [ 111.214056][ C0] __x64_sys_sendmmsg+0x9d/0x100 [ 111.219072][ C0] do_syscall_64+0xfa/0x790 [ 111.223714][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 111.229681][ C0] irq event stamp: 198300 [ 111.234004][ C0] hardirqs last enabled at (198300): [] _raw_spin_unlock_irqrestore+0x66/0xe0 [ 111.244607][ C0] hardirqs last disabled at (198299): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 111.254801][ C0] softirqs last enabled at (198284): [] _local_bh_enable+0x1c/0x30 [ 111.264561][ C0] softirqs last disabled at (198285): [] irq_exit+0x19b/0x1e0 [ 111.275040][ C0] [ 111.275040][ C0] other info that might help us debug this: [ 111.283090][ C0] Possible unsafe locking scenario: [ 111.283090][ C0] [ 111.290523][ C0] CPU0 [ 111.293785][ C0] ---- [ 111.297100][ C0] lock(&(&local->client_conns_lock)->rlock); [ 111.303254][ C0] [ 111.306761][ C0] lock(&(&local->client_conns_lock)->rlock); [ 111.313128][ C0] [ 111.313128][ C0] *** DEADLOCK *** [ 111.313128][ C0] [ 111.321261][ C0] 1 lock held by swapper/0/0: [ 111.325914][ C0] #0: ffffffff89bac140 (rcu_callback){....}, at: rcu_core+0x562/0x1390 [ 111.334346][ C0] [ 111.334346][ C0] stack backtrace: [ 111.340228][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-syzkaller #0 [ 111.347746][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.358025][ C0] Call Trace: [ 111.361341][ C0] [ 111.364232][ C0] dump_stack+0x197/0x210 [ 111.368602][ C0] print_usage_bug.cold+0x327/0x378 [ 111.373872][ C0] mark_lock+0xbb4/0x1220 [ 111.378287][ C0] ? check_usage_backwards+0x330/0x330 [ 111.383880][ C0] __lock_acquire+0x1e8e/0x4a00 [ 111.388707][ C0] ? find_held_lock+0x35/0x130 [ 111.393459][ C0] ? __kasan_check_read+0x11/0x20 [ 111.398461][ C0] ? mark_lock+0xc2/0x1220 [ 111.402969][ C0] ? mark_held_locks+0xf0/0xf0 [ 111.407709][ C0] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 111.413497][ C0] lock_acquire+0x190/0x410 [ 111.417978][ C0] ? rxrpc_put_client_conn+0x6ed/0xc90 [ 111.424581][ C0] _raw_spin_lock+0x2f/0x40 [ 111.429222][ C0] ? rxrpc_put_client_conn+0x6ed/0xc90 [ 111.434658][ C0] rxrpc_put_client_conn+0x6ed/0xc90 [ 111.439975][ C0] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 111.445472][ C0] rxrpc_rcu_destroy_call+0xbd/0x200 [ 111.450771][ C0] rcu_core+0x5e1/0x1390 [ 111.455060][ C0] ? __rcu_read_unlock+0x700/0x700 [ 111.460276][ C0] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 111.465837][ C0] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 111.471796][ C0] ? run_rebalance_domains+0x227/0x2d0 [ 111.477247][ C0] rcu_core_si+0x9/0x10 [ 111.481449][ C0] __do_softirq+0x262/0x98c [ 111.485938][ C0] ? sched_clock_cpu+0x1b/0x1b0 [ 111.490776][ C0] irq_exit+0x19b/0x1e0 [ 111.494932][ C0] smp_apic_timer_interrupt+0x1a3/0x610 [ 111.500465][ C0] apic_timer_interrupt+0xf/0x20 [ 111.505423][ C0] [ 111.508355][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 111.513719][ C0] Code: d8 66 c6 f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d d4 c9 5a 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d c4 c9 5a 00 fb f4 cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 0e 26 75 f9 e8 09 [ 111.533450][ C0] RSP: 0018:ffffffff89a07ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 111.541854][ C0] RAX: 1ffffffff1367612 RBX: ffffffff89a7a440 RCX: 0000000000000000 [ 111.549822][ C0] RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff89a7acd4 [ 111.557779][ C0] RBP: ffffffff89a07d18 R08: ffffffff89a7a440 R09: 0000000000000000 [ 111.566014][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 111.574092][ C0] R13: ffffffff8aa58b80 R14: 0000000000000000 R15: 0000000000000000 [ 111.582167][ C0] ? default_idle+0x4e/0x360 [ 111.586774][ C0] arch_cpu_idle+0xa/0x10 [ 111.591098][ C0] default_idle_call+0x84/0xb0 [ 111.596493][ C0] do_idle+0x3c8/0x6e0 [ 111.600638][ C0] ? arch_cpu_idle_exit+0x80/0x80 [ 111.605663][ C0] ? trace_hardirqs_on+0x67/0x240 [ 111.610699][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 111.616930][ C0] ? debug_smp_processor_id+0x33/0x18a [ 111.622381][ C0] cpu_startup_entry+0x1b/0x20 [ 111.627211][ C0] rest_init+0x23b/0x371 [ 111.631597][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 111.637866][ C0] arch_call_rest_init+0xe/0x1b [ 111.642704][ C0] start_kernel+0x886/0x8c5 [ 111.647200][ C0] ? mem_encrypt_init+0xb/0xb [ 111.651869][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 111.658159][ C0] ? x86_family+0x41/0x50 [ 111.662470][ C0] ?