[ 42.296437] audit: type=1800 audit(1582420234.213:30): pid=8004 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 file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 46.449699] kauditd_printk_skb: 4 callbacks suppressed
[ 46.449714] audit: type=1400 audit(1582420238.403:35): avc: denied { map } for pid=8177 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 '10.128.0.3' (ECDSA) to the list of known hosts.
executing program
[ 53.303339] audit: type=1400 audit(1582420245.253:36): avc: denied { map } for pid=8189 comm="syz-executor492" path="/root/syz-executor492258715" 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
[ 53.316937] IPVS: ftp: loaded support on port[0] = 21
[ 53.398080]
[ 53.399738] ================================
[ 53.404124] WARNING: inconsistent lock state
[ 53.408551] 4.19.105-syzkaller #0 Not tainted
[ 53.413055] --------------------------------
[ 53.417446] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 53.423949] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 53.429221] 00000000e4e1111d (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20
[ 53.439448] {SOFTIRQ-ON-W} state was registered at:
[ 53.444490] lock_acquire+0x16f/0x3f0
[ 53.448369] _raw_spin_lock+0x2f/0x40
[ 53.452272] rxrpc_connect_call+0x351/0x4920
[ 53.456775] rxrpc_new_client_call+0x8e7/0x1880
[ 53.461517] rxrpc_do_sendmsg+0xfc3/0x1ca3
[ 53.465861] rxrpc_sendmsg+0x4a0/0x5b0
[ 53.469856] sock_sendmsg+0xd7/0x130
[ 53.473678] ___sys_sendmsg+0x3e2/0x920
[ 53.477750] __sys_sendmmsg+0x1bf/0x4e0
[ 53.481833] __x64_sys_sendmmsg+0x9d/0x100
[ 53.486166] do_syscall_64+0xfd/0x620
[ 53.490040] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 53.495304] irq event stamp: 180062
[ 53.498935] hardirqs last enabled at (180062): [<ffffffff87549a3b>] _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 53.508724] hardirqs last disabled at (180061): [<ffffffff87549ccf>] _raw_spin_lock_irqsave+0x6f/0xcd
[ 53.518114] softirqs last enabled at (179954): [<ffffffff813fdc3c>] _local_bh_enable+0x1c/0x30
[ 53.526980] softirqs last disabled at (179955): [<ffffffff814007c0>] irq_exit+0x180/0x1d0
[ 53.535342]
[ 53.535342] other info that might help us debug this:
[ 53.541999] Possible unsafe locking scenario:
[ 53.541999]
[ 53.548040] CPU0
[ 53.550607] ----
[ 53.553174] lock(&(&local->client_conns_lock)->rlock);
[ 53.558633] <Interrupt>
[ 53.561372] lock(&(&local->client_conns_lock)->rlock);
[ 53.567031]
[ 53.567031] *** DEADLOCK ***
[ 53.567031]
[ 53.573088] 1 lock held by swapper/1/0:
[ 53.577039] #0: 000000001c7188ce (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30
[ 53.586080]
[ 53.586080] stack backtrace:
[ 53.590602] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.105-syzkaller #0
[ 53.597723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 53.607119] Call Trace:
[ 53.609690] <IRQ>
[ 53.611830] dump_stack+0x197/0x210
[ 53.615441] print_usage_bug.cold+0x330/0x42a
[ 53.620042] ? save_stack_trace+0x1a/0x20
[ 53.624192] mark_lock+0xd1b/0x1370
[ 53.627900] ? check_usage_backwards+0x340/0x340
[ 53.632655] __lock_acquire+0xc62/0x49c0
[ 53.636771] ? mark_held_locks+0x100/0x100
[ 53.641029] ? __kasan_slab_free+0x102/0x150
[ 53.645733] ? kasan_slab_free+0xe/0x10
[ 53.649706] ? kmem_cache_free+0x86/0x260
[ 53.653846] ? put_cred_rcu+0x2b6/0x4b0
[ 53.657820] ? mark_held_locks+0x100/0x100
[ 53.662084] ? find_held_lock+0x35/0x130
[ 53.666144] ? debug_object_deactivate+0x1e4/0x360
[ 53.671070] ? mark_held_locks+0x100/0x100
[ 53.675291] ? debug_object_deactivate+0x1e4/0x360
[ 53.680211] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 53.685303] ? lockdep_hardirqs_on+0x19b/0x5d0
[ 53.690018] lock_acquire+0x16f/0x3f0
[ 53.693817] ? rxrpc_put_client_conn+0x683/0xc20
[ 53.698564] _raw_spin_lock+0x2f/0x40
[ 53.702541] ? rxrpc_put_client_conn+0x683/0xc20
[ 53.707372] rxrpc_put_client_conn+0x683/0xc20
[ 53.711970] ? rxrpc_rcu_destroy_call+0xbd/0x200
[ 53.716861] ? rxrpc_process_call.cold+0x20/0x20
[ 53.721610] rxrpc_rcu_destroy_call+0xbd/0x200
[ 53.726206] rcu_process_callbacks+0xba0/0x1a30
[ 53.730866] ? __rcu_read_unlock+0x170/0x170
[ 53.735323] __do_softirq+0x25c/0x921
[ 53.739118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 53.744662] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 53.750200] irq_exit+0x180/0x1d0
[ 53.753798] smp_apic_timer_interrupt+0x13b/0x550
[ 53.758681] apic_timer_interrupt+0xf/0x20
[ 53.762902] </IRQ>
[ 53.765137] RIP: 0010:native_safe_halt+0xe/0x10
[ 53.769814] 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
[ 53.789766] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 53.797469] RAX: 1ffffffff11e4ad4 RBX: ffff8880aa3a43c0 RCX: 0000000000000000
[ 53.804792] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c
[ 53.812175] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000
[ 53.819522] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 53.826830] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffff8880aa3a43c0
[ 53.834151] ? default_idle+0x4e/0x320
[ 53.838123] arch_cpu_idle+0xa/0x10
[ 53.841774] default_idle_call+0x36/0x90
[ 53.845933] do_idle+0x30c/0x4d0
[ 53.849289] ? trace_hardirqs_on+0x67/0x220
[ 53.853605] ? arch_cpu_idle_exit+0x80/0x80
[ 53.857976] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 53.863079] ? complete+0x61/0x80
[ 53.866529] cpu_startup_entry+0xc8/0xe0
[ 53.870580] ? cpu_in_idle+0x20/0x20
[ 53.874289] ? setup_APIC_timer+0x1aa/0x200
[ 53.878604] start_secondary+0x3e8/0x5b0
[ 53.882660] ? set_cpu_sibling_map+0x1860/0x1860
[ 53.887405] secondary_startup_64+0xa4/0xb0