[ 43.658658] audit: type=1800 audit(1582168766.205:30): pid=8081 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Starting mcstransd:
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 48.944344] kauditd_printk_skb: 4 callbacks suppressed
[ 48.944358] audit: type=1400 audit(1582168771.515:35): avc: denied { map } for pid=8253 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 '10.128.1.18' (ECDSA) to the list of known hosts.
executing program
[ 55.778826] audit: type=1400 audit(1582168778.355:36): avc: denied { map } for pid=8265 comm="syz-executor278" path="/root/syz-executor278105392" 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
[ 55.793087] IPVS: ftp: loaded support on port[0] = 21
[ 55.874215]
[ 55.875869] ================================
[ 55.880264] WARNING: inconsistent lock state
[ 55.884678] 4.19.105-syzkaller #0 Not tainted
[ 55.889171] --------------------------------
[ 55.893714] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 55.899965] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 55.905371] 000000009f6028c3 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20
[ 55.915607] {SOFTIRQ-ON-W} state was registered at:
[ 55.920619] lock_acquire+0x16f/0x3f0
[ 55.924528] _raw_spin_lock+0x2f/0x40
[ 55.928458] rxrpc_connect_call+0x351/0x4920
[ 55.932963] rxrpc_new_client_call+0x8e7/0x1880
[ 55.937794] rxrpc_do_sendmsg+0xfc3/0x1ca3
[ 55.942099] rxrpc_sendmsg+0x4a0/0x5b0
[ 55.946070] sock_sendmsg+0xd7/0x130
[ 55.950211] ___sys_sendmsg+0x3e2/0x920
[ 55.954420] __sys_sendmmsg+0x1bf/0x4e0
[ 55.958938] __x64_sys_sendmmsg+0x9d/0x100
[ 55.963282] do_syscall_64+0xfd/0x620
[ 55.967344] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 55.972722] irq event stamp: 158042
[ 55.976616] hardirqs last enabled at (158042): [<ffffffff87549a3b>] _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 55.986674] hardirqs last disabled at (158041): [<ffffffff87549ccf>] _raw_spin_lock_irqsave+0x6f/0xcd
[ 55.996165] softirqs last enabled at (157926): [<ffffffff813fdc3c>] _local_bh_enable+0x1c/0x30
[ 56.005123] softirqs last disabled at (157927): [<ffffffff814007c0>] irq_exit+0x180/0x1d0
[ 56.013429]
[ 56.013429] other info that might help us debug this:
[ 56.020087] Possible unsafe locking scenario:
[ 56.020087]
[ 56.026131] CPU0
[ 56.028725] ----
[ 56.031302] lock(&(&local->client_conns_lock)->rlock);
[ 56.036848] <Interrupt>
[ 56.039589] lock(&(&local->client_conns_lock)->rlock);
[ 56.045219]
[ 56.045219] *** DEADLOCK ***
[ 56.045219]
[ 56.051549] 1 lock held by swapper/1/0:
[ 56.055515] #0: 00000000ada7838d (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30
[ 56.064355]
[ 56.064355] stack backtrace:
[ 56.068850] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.105-syzkaller #0
[ 56.076006] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 56.085586] Call Trace:
[ 56.088165] <IRQ>
[ 56.090364] dump_stack+0x197/0x210
[ 56.093998] print_usage_bug.cold+0x330/0x42a
[ 56.098774] ? save_stack_trace+0x1a/0x20
[ 56.102931] mark_lock+0xd1b/0x1370
[ 56.106736] ? check_usage_backwards+0x340/0x340
[ 56.111596] __lock_acquire+0xc62/0x49c0
[ 56.115746] ? mark_held_locks+0x100/0x100
[ 56.120067] ? save_stack+0x45/0xd0
[ 56.123681] ? __kasan_slab_free+0x102/0x150
[ 56.128455] ? kasan_slab_free+0xe/0x10
[ 56.132436] ? kfree+0xcf/0x220
[ 56.135713] ? mark_held_locks+0x100/0x100
[ 56.139963] ? find_held_lock+0x35/0x130
[ 56.144059] ? debug_object_deactivate+0x1e4/0x360
[ 56.149059] ? mark_held_locks+0x100/0x100
[ 56.153352] ? debug_object_deactivate+0x1e4/0x360
[ 56.158542] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 56.163738] ? lockdep_hardirqs_on+0x19b/0x5d0
[ 56.168323] lock_acquire+0x16f/0x3f0
[ 56.172124] ? rxrpc_put_client_conn+0x683/0xc20
[ 56.176892] _raw_spin_lock+0x2f/0x40
[ 56.180823] ? rxrpc_put_client_conn+0x683/0xc20
[ 56.185696] rxrpc_put_client_conn+0x683/0xc20
[ 56.190283] ? rxrpc_rcu_destroy_call+0xbd/0x200
[ 56.195122] ? rxrpc_process_call.cold+0x20/0x20
[ 56.199871] rxrpc_rcu_destroy_call+0xbd/0x200
[ 56.204449] rcu_process_callbacks+0xba0/0x1a30
[ 56.209130] ? __rcu_read_unlock+0x170/0x170
[ 56.213549] __do_softirq+0x25c/0x921
[ 56.219360] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 56.224955] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 56.230616] irq_exit+0x180/0x1d0
[ 56.234252] smp_apic_timer_interrupt+0x13b/0x550
[ 56.239295] apic_timer_interrupt+0xf/0x20
[ 56.243613] </IRQ>
[ 56.245855] RIP: 0010:native_safe_halt+0xe/0x10
[ 56.250533] Code: ff ff 48 89 df e8 92 f8 4d fa eb 82 e9 07 00 00 00 0f 00 2d 74 61 53 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 64 61 53 00 fb f4 <c3> 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 be cc 04 fa e8 d9
[ 56.269520] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 56.277238] RAX: 1ffffffff11e4ad4 RBX: ffff8880aa3a43c0 RCX: 0000000000000000
[ 56.284507] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c
[ 56.291936] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000
[ 56.299432] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 56.306784] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffff8880aa3a43c0
[ 56.314069] ? default_idle+0x4e/0x320
[ 56.317949] arch_cpu_idle+0xa/0x10
[ 56.321578] default_idle_call+0x36/0x90
[ 56.32