[ 40.922968] audit: type=1800 audit(1582502155.777:31): pid=7933 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0
[ 40.944547] audit: type=1800 audit(1582502155.777:32): pid=7933 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 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
Warning: Permanently added '10.128.1.21' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 51.524690] kauditd_printk_skb: 3 callbacks suppressed
[ 51.524712] audit: type=1400 audit(1582502166.437:36): avc: denied { map } for pid=8121 comm="syz-executor423" path="/root/syz-executor423381072" 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
[ 51.541873] IPVS: ftp: loaded support on port[0] = 21
[ 51.623187]
[ 51.624833] ================================
[ 51.629233] WARNING: inconsistent lock state
[ 51.633629] 4.19.105-syzkaller #0 Not tainted
[ 51.638111] --------------------------------
[ 51.642504] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 51.648637] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 51.653894] 0000000078e79bcd (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20
[ 51.664291] {SOFTIRQ-ON-W} state was registered at:
[ 51.669299] lock_acquire+0x16f/0x3f0
[ 51.673183] _raw_spin_lock+0x2f/0x40
[ 51.677073] rxrpc_connect_call+0x351/0x4920
[ 51.681555] rxrpc_new_client_call+0x8e7/0x1880
[ 51.686329] rxrpc_do_sendmsg+0xfc3/0x1ca3
[ 51.690634] rxrpc_sendmsg+0x4a0/0x5b0
[ 51.694596] sock_sendmsg+0xd7/0x130
[ 51.698445] ___sys_sendmsg+0x3e2/0x920
[ 51.702497] __sys_sendmmsg+0x1bf/0x4e0
[ 51.706553] __x64_sys_sendmmsg+0x9d/0x100
[ 51.710867] do_syscall_64+0xfd/0x620
[ 51.714862] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 51.720251] irq event stamp: 163302
[ 51.723876] hardirqs last enabled at (163302): [<ffffffff87549a3b>] _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 51.733663] hardirqs last disabled at (163301): [<ffffffff87549ccf>] _raw_spin_lock_irqsave+0x6f/0xcd
[ 51.743039] softirqs last enabled at (163186): [<ffffffff813fdc3c>] _local_bh_enable+0x1c/0x30
[ 51.751971] softirqs last disabled at (163187): [<ffffffff814007c0>] irq_exit+0x180/0x1d0
[ 51.760266]
[ 51.760266] other info that might help us debug this:
[ 51.767071] Possible unsafe locking scenario:
[ 51.767071]
[ 51.773113] CPU0
[ 51.775760] ----
[ 51.778326] lock(&(&local->client_conns_lock)->rlock);
[ 51.783763] <Interrupt>
[ 51.786498] lock(&(&local->client_conns_lock)->rlock);
[ 51.792109]
[ 51.792109] *** DEADLOCK ***
[ 51.792109]
[ 51.798159] 1 lock held by swapper/1/0:
[ 51.802165] #0: 000000000e65c03d (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30
[ 51.810966]
[ 51.810966] stack backtrace:
[ 51.815450] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.105-syzkaller #0
[ 51.822537] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 51.832426] Call Trace:
[ 51.834991] <IRQ>
[ 51.837132] dump_stack+0x197/0x210
[ 51.840757] print_usage_bug.cold+0x330/0x42a
[ 51.847782] ? save_stack_trace+0x1a/0x20
[ 51.851930] mark_lock+0xd1b/0x1370
[ 51.855599] ? check_usage_backwards+0x340/0x340
[ 51.860344] __lock_acquire+0xc62/0x49c0
[ 51.864400] ? mark_held_locks+0x100/0x100
[ 51.868812] ? __kasan_slab_free+0x102/0x150
[ 51.873211] ? kasan_slab_free+0xe/0x10
[ 51.877172] ? kmem_cache_free+0x86/0x260
[ 51.881435] ? put_cred_rcu+0x2b6/0x4b0
[ 51.885408] ? mark_held_locks+0x100/0x100
[ 51.889629] ? find_held_lock+0x35/0x130
[ 51.893687] ? debug_object_deactivate+0x1e4/0x360
[ 51.898622] ? mark_held_locks+0x100/0x100
[ 51.902905] ? debug_object_deactivate+0x1e4/0x360
[ 51.907918] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 51.913103] ? lockdep_hardirqs_on+0x19b/0x5d0
[ 51.917690] lock_acquire+0x16f/0x3f0
[ 51.921483] ? rxrpc_put_client_conn+0x683/0xc20
[ 51.926238] _raw_spin_lock+0x2f/0x40
[ 51.930220] ? rxrpc_put_client_conn+0x683/0xc20
[ 51.934973] rxrpc_put_client_conn+0x683/0xc20
[ 51.939541] ? rxrpc_rcu_destroy_call+0xbd/0x200
[ 51.944407] ? rxrpc_process_call.cold+0x20/0x20
[ 51.949147] rxrpc_rcu_destroy_call+0xbd/0x200
[ 51.953722] rcu_process_callbacks+0xba0/0x1a30
[ 51.958405] ? __rcu_read_unlock+0x170/0x170
[ 51.962809] __do_softirq+0x25c/0x921
[ 51.966664] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 51.972343] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 51.977882] irq_exit+0x180/0x1d0
[ 51.981323] smp_apic_timer_interrupt+0x13b/0x550
[ 51.986165] apic_timer_interrupt+0xf/0x20
[ 51.990403] </IRQ>
[ 51.992677] RIP: 0010:native_safe_halt+0xe/0x10
[ 51.997379] 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
[ 52.016537] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 52.024273] RAX: 1ffffffff11e4ad4 RBX: ffff8880aa3a43c0 RCX: 0000000000000000
[ 52.031639] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c
[ 52.038903] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000
[ 52.046210] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 52.053474] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffff8880aa3a43c0
[ 52.060743] ? default_idle+0x4e/0x320
[ 52.064615] arch_cpu_idle+0xa/0x10
[ 52.068240] default_idle_call+0x36/0x90
[ 52.072298] do_idle+0x30c/0x4d0
[ 52.075651] ? trace_hardirqs_on+0x67/0x220
[ 52.080108] ? arch_cpu_idle_exit+0x80/0x80
[ 52.084432] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 52.089522] ? complete+0x61/0x80
[ 52.093012] cpu_startup_entry+0xc8/0xe0
[ 52.097067] ? cpu_in_idle+0x20/0x20
[ 52.100780] ? setup_APIC_timer+0x1aa/0x200
[ 52.105148] start_secondary+0x3e8/0x5b0
[ 52.109201] ? set_cpu_sibling_map+0x1860/0x1860
[ 52.113998] secondary_startup_64+0xa4/0xb0