[ 46.145067] audit: type=1800 audit(1581459046.644:30): pid=8135 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 mcstransd:
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] 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: [ 50.166768] kauditd_printk_skb: 4 callbacks suppressed
[ 50.166784] audit: type=1400 audit(1581459050.714:35): avc: denied { map } for pid=8309 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 '10.128.10.26' (ECDSA) to the list of known hosts.
executing program
[ 62.412469] audit: type=1400 audit(1581459062.954:36): avc: denied { map } for pid=8321 comm="syz-executor451" path="/root/syz-executor451532386" 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
[ 62.435550] IPVS: ftp: loaded support on port[0] = 21
[ 62.516046]
[ 62.517697] ================================
[ 62.522081] WARNING: inconsistent lock state
[ 62.526530] 4.19.103-syzkaller #0 Not tainted
[ 62.531002] --------------------------------
[ 62.535393] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[ 62.541520] swapper/1/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 62.546888] 000000008093ceed (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20
[ 62.557135] {SOFTIRQ-ON-W} state was registered at:
[ 62.562159] lock_acquire+0x16f/0x3f0
[ 62.566050] _raw_spin_lock+0x2f/0x40
[ 62.569934] rxrpc_connect_call+0x351/0x4920
[ 62.574571] rxrpc_new_client_call+0x8e7/0x1880
[ 62.579348] rxrpc_do_sendmsg+0xfc3/0x1ca3
[ 62.583690] rxrpc_sendmsg+0x4a0/0x5b0
[ 62.587677] sock_sendmsg+0xd7/0x130
[ 62.591467] ___sys_sendmsg+0x3e2/0x920
[ 62.595513] __sys_sendmmsg+0x1bf/0x4e0
[ 62.599570] __x64_sys_sendmmsg+0x9d/0x100
[ 62.603932] do_syscall_64+0xfd/0x620
[ 62.608163] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 62.613446] irq event stamp: 157726
[ 62.617062] hardirqs last enabled at (157726): [<ffffffff87553a3b>] _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 62.626843] hardirqs last disabled at (157725): [<ffffffff87553ccf>] _raw_spin_lock_irqsave+0x6f/0xcd
[ 62.636193] softirqs last enabled at (157610): [<ffffffff81402cdc>] _local_bh_enable+0x1c/0x30
[ 62.645035] softirqs last disabled at (157611): [<ffffffff81405860>] irq_exit+0x180/0x1d0
[ 62.653484]
[ 62.653484] other info that might help us debug this:
[ 62.660149] Possible unsafe locking scenario:
[ 62.660149]
[ 62.666201] CPU0
[ 62.668765] ----
[ 62.671337] lock(&(&local->client_conns_lock)->rlock);
[ 62.676823] <Interrupt>
[ 62.679576] lock(&(&local->client_conns_lock)->rlock);
[ 62.685239]
[ 62.685239] *** DEADLOCK ***
[ 62.685239]
[ 62.691302] 1 lock held by swapper/1/0:
[ 62.695285] #0: 0000000099ec006e (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30
[ 62.704140]
[ 62.704140] stack backtrace:
[ 62.708633] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.103-syzkaller #0
[ 62.715833] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 62.725318] Call Trace:
[ 62.727902] <IRQ>
[ 62.730152] dump_stack+0x197/0x210
[ 62.733798] print_usage_bug.cold+0x330/0x42a
[ 62.738304] ? save_stack_trace+0x1a/0x20
[ 62.742447] mark_lock+0xd1b/0x1370
[ 62.746185] ? check_usage_backwards+0x340/0x340
[ 62.751054] __lock_acquire+0xc62/0x49c0
[ 62.755164] ? mark_held_locks+0x100/0x100
[ 62.759541] ? __kasan_slab_free+0x102/0x150
[ 62.763938] ? kasan_slab_free+0xe/0x10
[ 62.767912] ? kmem_cache_free+0x86/0x260
[ 62.772063] ? put_cred_rcu+0x2b6/0x4b0
[ 62.776052] ? mark_held_locks+0x100/0x100
[ 62.780335] ? find_held_lock+0x35/0x130
[ 62.784410] ? debug_object_deactivate+0x1e4/0x360
[ 62.789471] ? mark_held_locks+0x100/0x100
[ 62.793738] ? debug_object_deactivate+0x1e4/0x360
[ 62.798711] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 62.803822] ? lockdep_hardirqs_on+0x19b/0x5d0
[ 62.808411] lock_acquire+0x16f/0x3f0
[ 62.812218] ? rxrpc_put_client_conn+0x683/0xc20
[ 62.817019] _raw_spin_lock+0x2f/0x40
[ 62.820823] ? rxrpc_put_client_conn+0x683/0xc20
[ 62.825591] rxrpc_put_client_conn+0x683/0xc20
[ 62.830303] ? rxrpc_rcu_destroy_call+0xbd/0x200
[ 62.835120] ? rxrpc_process_call.cold+0x20/0x20
[ 62.840020] rxrpc_rcu_destroy_call+0xbd/0x200
[ 62.844666] rcu_process_callbacks+0xba0/0x1a30
[ 62.849347] ? __rcu_read_unlock+0x170/0x170
[ 62.853802] __do_softirq+0x25c/0x921
[ 62.857730] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 62.863292] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 62.868854] irq_exit+0x180/0x1d0
[ 62.872319] smp_apic_timer_interrupt+0x13b/0x550
[ 62.877169] apic_timer_interrupt+0xf/0x20
[ 62.881459] </IRQ>
[ 62.883723] RIP: 0010:native_safe_halt+0xe/0x10
[ 62.888412] Code: ff ff 48 89 df e8 42 aa 4d fa eb 82 e9 07 00 00 00 0f 00 2d 74 c2 52 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 64 c2 52 00 fb f4 <c3> 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 6e 7e 04 fa e8 19
[ 62.908408] RSP: 0018:ffff8880aa3b7d08 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 62.916119] RAX: 1ffffffff11e4aec RBX: ffff8880aa3a43c0 RCX: 0000000000000000
[ 62.923497] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa3a4c3c
[ 62.930810] RBP: ffff8880aa3b7d38 R08: ffff8880aa3a43c0 R09: 0000000000000000
[ 62.938070] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
[ 62.945329] R13: ffffffff88f25750 R14: 0000000000000000 R15: ffff8880aa3a43c0
[ 62.952624] ? default_idle+0x4e/0x320
[ 62.956501] arch_cpu_idle+0xa/0x10
[ 62.960112] default_idle_call+0x36/0x90
[ 62.964158] do_idle+0x30c/0x4d0
[ 6