[ 42.702861] audit: type=1800 audit(1582151279.545:30): pid=8007 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: [ 47.304165] kauditd_printk_skb: 4 callbacks suppressed
[ 47.304180] audit: type=1400 audit(1582151284.145:35): avc: denied { map } for pid=8182 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 '10.128.0.24' (ECDSA) to the list of known hosts.
executing program
[ 54.159582] audit: type=1400 audit(1582151290.995:36): avc: denied { map } for pid=8194 comm="syz-executor655" path="/root/syz-executor655437943" 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
[ 54.181647] IPVS: ftp: loaded support on port[0] = 21
[ 54.262221]
[ 54.263963] ================================
[ 54.269346] WARNING: inconsistent lock state
[ 54.274525] 4.19.105-syzkaller #0 Not tainted
[ 54.279106] --------------------------------
[ 54.283837] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 54.291401] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 54.297466] 00000000f4a764df (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20
[ 54.308942] {SOFTIRQ-ON-W} state was registered at:
[ 54.314492] lock_acquire+0x16f/0x3f0
[ 54.318956] _raw_spin_lock+0x2f/0x40
[ 54.323063] rxrpc_connect_call+0x351/0x4920
[ 54.328091] rxrpc_new_client_call+0x8e7/0x1880
[ 54.333168] rxrpc_do_sendmsg+0xfc3/0x1ca3
[ 54.337710] rxrpc_sendmsg+0x4a0/0x5b0
[ 54.342141] sock_sendmsg+0xd7/0x130
[ 54.346151] ___sys_sendmsg+0x3e2/0x920
[ 54.350385] __sys_sendmmsg+0x1bf/0x4e0
[ 54.354681] __x64_sys_sendmmsg+0x9d/0x100
[ 54.359131] do_syscall_64+0xfd/0x620
[ 54.363626] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 54.369932] irq event stamp: 167134
[ 54.373576] hardirqs last enabled at (167134): [<ffffffff87549a3b>] _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 54.383567] hardirqs last disabled at (167133): [<ffffffff87549ccf>] _raw_spin_lock_irqsave+0x6f/0xcd
[ 54.395037] softirqs last enabled at (167018): [<ffffffff813fdc3c>] _local_bh_enable+0x1c/0x30
[ 54.404274] softirqs last disabled at (167019): [<ffffffff814007c0>] irq_exit+0x180/0x1d0
[ 54.413379]
[ 54.413379] other info that might help us debug this:
[ 54.420328] Possible unsafe locking scenario:
[ 54.420328]
[ 54.426921] CPU0
[ 54.429599] ----
[ 54.432243] lock(&(&local->client_conns_lock)->rlock);
[ 54.438056] <Interrupt>
[ 54.440801] lock(&(&local->client_conns_lock)->rlock);
[ 54.446895]
[ 54.446895] *** DEADLOCK ***
[ 54.446895]
[ 54.453718] 1 lock held by swapper/1/0:
[ 54.457858] #0: 00000000a85735fd (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30
[ 54.468365]
[ 54.468365] stack backtrace:
[ 54.473949] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.105-syzkaller #0
[ 54.481321] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 54.491234] Call Trace:
[ 54.493815] <IRQ>
[ 54.496231] dump_stack+0x197/0x210
[ 54.500064] print_usage_bug.cold+0x330/0x42a
[ 54.504896] ? save_stack_trace+0x1a/0x20
[ 54.509607] mark_lock+0xd1b/0x1370
[ 54.513239] ? check_usage_backwards+0x340/0x340
[ 54.518451] __lock_acquire+0xc62/0x49c0
[ 54.522651] ? mark_held_locks+0x100/0x100
[ 54.527000] ? save_stack+0x45/0xd0
[ 54.530897] ? __kasan_slab_free+0x102/0x150
[ 54.535458] ? kasan_slab_free+0xe/0x10
[ 54.539905] ? kfree+0xcf/0x220
[ 54.543491] ? mark_held_locks+0x100/0x100
[ 54.548368] ? find_held_lock+0x35/0x130
[ 54.552900] ? debug_object_deactivate+0x1e4/0x360
[ 54.557985] ? mark_held_locks+0x100/0x100
[ 54.562785] ? debug_object_deactivate+0x1e4/0x360
[ 54.568264] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 54.573515] ? lockdep_hardirqs_on+0x19b/0x5d0
[ 54.578512] lock_acquire+0x16f/0x3f0
[ 54.582362] ? rxrpc_put_client_conn+0x683/0xc20
[ 54.587445] _raw_spin_lock+0x2f/0x40
[ 54.591500] ? rxrpc_put_client_conn+0x683/0xc20
[ 54.596619] rxrpc_put_client_conn+0x683/0xc20
[ 54.601313] ? rxrpc_rcu_destroy_call+0xbd/0x200
[ 54.606240] ? rxrpc_process_call.cold+0x20/0x20
[ 54.611019] rxrpc_rcu_destroy_call+0xbd/0x200
[ 54.615848] rcu_process_callbacks+0xba0/0x1a30
[ 54.620641] ? __rcu_read_unlock+0x170/0x170
[ 54.625144] __do_softirq+0x25c/0x921
[ 54.629131] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 54.634930] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 54.640966] irq_exit+0x180/0x1d0
[ 54.645172] smp_apic_timer_interrupt+0x13b/0x550
[ 54.650294] apic_timer_interrupt+0xf/0x20
[ 54.654528] </IRQ>
[ 54.656765] RIP: 0010:native_safe_halt+0xe/0x10
[ 54.661574] 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
[ 54.681111] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 54.689050] RAX: 1ffffffff11e4ad4 RBX: ffff8880aa3a43c0 RCX: 0000000000000000
[ 54.696678] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c
[ 54.703945] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000
[ 54.711820] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 54.719278] R13: ffffffff88f25690 R14: 0000000000000000 R15: ffff8880aa3a43c0
[ 54.726695] ? default_idle+0x4e/0x320
[ 54.730749] arch_cpu_idle+0xa/0x10
[ 54.734493] default_idle_call+0x36/0x90
[ 54.738807] do_idle+0x30c/0x4d0
[ 54.742265] ? trace_hardirqs_on+0x67/0x220
[ 54.746955] ? arch_cpu_idle_exit+0x80/0x80
[ 54.751548] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 54.756888] ? complete+0x61/0x80
[ 54.760377] cpu_startup_entry+0xc8/0xe0
[ 54.764444] ? cpu_in_idle+0x20/0x20
[ 54.768463] ? setup_APIC_timer+0x1aa/0x200
[ 54.773290] start_secondary+0x3e8/0x5b0
[ 54.777386] ? set_cpu_sibling_map+0x1860/0x1860
[ 54.782401] secondary_startup_64+0xa4/0xb0