[....] Starting periodic command scheduler: cron[ 47.991034] audit: type=1800 audit(1582167541.303:30): pid=8026 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
[?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: [ 53.113203] kauditd_printk_skb: 4 callbacks suppressed
[ 53.113218] audit: type=1400 audit(1582167546.433:35): avc: denied { map } for pid=8200 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 '10.128.0.15' (ECDSA) to the list of known hosts.
executing program
[ 59.990670] audit: type=1400 audit(1582167553.303:36): avc: denied { map } for pid=8212 comm="syz-executor245" path="/root/syz-executor245535274" dev="sda1" ino=2233 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[ 60.012358] IPVS: ftp: loaded support on port[0] = 21
[ 60.082244]
[ 60.083898] ================================
[ 60.088476] WARNING: inconsistent lock state
[ 60.092902] 4.19.105-syzkaller #0 Not tainted
[ 60.097597] --------------------------------
[ 60.102090] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 60.108416] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 60.113815] 0000000065e4c901 (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20
[ 60.124186] {SOFTIRQ-ON-W} state was registered at:
[ 60.129223] lock_acquire+0x16f/0x3f0
[ 60.133109] _raw_spin_lock+0x2f/0x40
[ 60.137014] rxrpc_connect_call+0x351/0x4920
[ 60.141514] rxrpc_new_client_call+0x8e7/0x1880
[ 60.146283] rxrpc_do_sendmsg+0xfc3/0x1ca3
[ 60.150606] rxrpc_sendmsg+0x4a0/0x5b0
[ 60.154678] sock_sendmsg+0xd7/0x130
[ 60.158483] ___sys_sendmsg+0x3e2/0x920
[ 60.162754] __sys_sendmmsg+0x1bf/0x4e0
[ 60.166832] __x64_sys_sendmmsg+0x9d/0x100
[ 60.171263] do_syscall_64+0xfd/0x620
[ 60.175158] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 60.181298] irq event stamp: 163458
[ 60.185040] hardirqs last enabled at (163458): [<ffffffff87549a3b>] _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 60.194841] hardirqs last disabled at (163457): [<ffffffff87549ccf>] _raw_spin_lock_irqsave+0x6f/0xcd
[ 60.204268] softirqs last enabled at (163356): [<ffffffff813fdc3c>] _local_bh_enable+0x1c/0x30
[ 60.213109] softirqs last disabled at (163357): [<ffffffff814007c0>] irq_exit+0x180/0x1d0
[ 60.221621]
[ 60.221621] other info that might help us debug this:
[ 60.229845] Possible unsafe locking scenario:
[ 60.229845]
[ 60.237290] CPU0
[ 60.240456] ----
[ 60.243828] lock(&(&local->client_conns_lock)->rlock);
[ 60.250073] <Interrupt>
[ 60.253113] lock(&(&local->client_conns_lock)->rlock);
[ 60.259282]
[ 60.259282] *** DEADLOCK ***
[ 60.259282]
[ 60.265342] 1 lock held by swapper/1/0:
[ 60.269296] #0: 00000000775a1f0d (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30
[ 60.278060]
[ 60.278060] stack backtrace:
[ 60.282588] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.105-syzkaller #0
[ 60.289708] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 60.299070] Call Trace:
[ 60.301663] <IRQ>
[ 60.304164] dump_stack+0x197/0x210
[ 60.308060] print_usage_bug.cold+0x330/0x42a
[ 60.312653] ? save_stack_trace+0x1a/0x20
[ 60.316906] mark_lock+0xd1b/0x1370
[ 60.325669] ? check_usage_backwards+0x340/0x340
[ 60.330547] __lock_acquire+0xc62/0x49c0
[ 60.334784] ? mark_held_locks+0x100/0x100
[ 60.339058] ? save_stack+0x45/0xd0
[ 60.343016] ? __kasan_slab_free+0x102/0x150
[ 60.347519] ? kasan_slab_free+0xe/0x10
[ 60.351496] ? kfree+0xcf/0x220
[ 60.355087] ? mark_held_locks+0x100/0x100
[ 60.359761] ? find_held_lock+0x35/0x130
[ 60.363916] ? debug_object_deactivate+0x1e4/0x360
[ 60.369025] ? mark_held_locks+0x100/0x100
[ 60.373610] ? debug_object_deactivate+0x1e4/0x360
[ 60.383155] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 60.388555] ? lockdep_hardirqs_on+0x19b/0x5d0
[ 60.393161] lock_acquire+0x16f/0x3f0
[ 60.397352] ? rxrpc_put_client_conn+0x683/0xc20
[ 60.402625] _raw_spin_lock+0x2f/0x40
[ 60.406546] ? rxrpc_put_client_conn+0x683/0xc20
[ 60.411765] rxrpc_put_client_conn+0x683/0xc20
[ 60.416962] ? rxrpc_rcu_destroy_call+0xbd/0x200
[ 60.421962] ? rxrpc_process_call.cold+0x20/0x20
[ 60.427110] rxrpc_rcu_destroy_call+0xbd/0x200
[ 60.432145] rcu_process_callbacks+0xba0/0x1a30
[ 60.437064] ? __rcu_read_unlock+0x170/0x170
[ 60.441501] __do_softirq+0x25c/0x921
[ 60.445322] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 60.450847] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 60.458211] irq_exit+0x180/0x1d0
[ 60.461656] smp_apic_timer_interrupt+0x13b/0x550
[ 60.467277] apic_timer_interrupt+0xf/0x20
[ 60.472042] </IRQ>
[ 60.474296] RIP: 0010:native_safe_halt+0xe/0x10
[ 60.480347] 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
[ 60.500097] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 60.507810] RAX: 1ffffffff11e4ad4 RBX: ffff8880aa3a43c0 RCX: 0000000000000000
[ 60.515078] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c
[ 60.522454] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000
[ 60.529721] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 60.537275] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffff8880aa3a43c0
[ 60.544680] ? default_idle+0x4e/0x320
[ 60.548661] arch_cpu_idle+0xa/0x10
[ 60.552289] default_idle_call+0x36/0x90
[ 60.556339] do_idle+0x30c/0x4d0
[ 60.559704] ? trace_hardirqs_on+0x67/0x220
[ 60.564026] ? arch_cpu_idle_exit+0x80/0x80
[ 60.568354] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 60.573451] ? complete+0x61/0x80
[ 60.576913] cpu_startup_entry+0xc8/0xe0
[ 60.581034] ? cpu_in_idle+0x20/0x20