Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 43.245163] audit: type=1800 audit(1582182864.785:33): pid=7696 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 47.867074] kauditd_printk_skb: 1 callbacks suppressed [ 47.867089] audit: type=1400 audit(1582182869.415:35): avc: denied { map } for pid=7872 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 '10.128.0.150' (ECDSA) to the list of known hosts. executing program [ 61.585941] audit: type=1400 audit(1582182883.125:36): avc: denied { map } for pid=7884 comm="syz-executor229" path="/root/syz-executor229623480" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 61.605612] IPVS: ftp: loaded support on port[0] = 21 [ 61.676647] [ 61.678403] ================================ [ 61.683195] WARNING: inconsistent lock state [ 61.687596] 4.19.105-syzkaller #0 Not tainted [ 61.692082] -------------------------------- [ 61.696761] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 61.702902] ksoftirqd/0/9 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 61.708418] 00000000e83b534c (&(&local->client_conns_lock)->rlock){+.?.}, at: rxrpc_put_client_conn+0x683/0xc20 [ 61.718694] {SOFTIRQ-ON-W} state was registered at: [ 61.723878] lock_acquire+0x16f/0x3f0 [ 61.727755] _raw_spin_lock+0x2f/0x40 [ 61.731654] rxrpc_connect_call+0x351/0x4920 [ 61.736151] rxrpc_new_client_call+0x8e7/0x1880 [ 61.740942] rxrpc_do_sendmsg+0xfc3/0x1ca3 [ 61.745271] rxrpc_sendmsg+0x4a0/0x5b0 [ 61.749248] sock_sendmsg+0xd7/0x130 [ 61.753066] ___sys_sendmsg+0x3e2/0x920 [ 61.757110] __sys_sendmmsg+0x1bf/0x4e0 [ 61.761171] __x64_sys_sendmmsg+0x9d/0x100 [ 61.765615] do_syscall_64+0xfd/0x620 [ 61.769503] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.774886] irq event stamp: 570666 [ 61.778605] hardirqs last enabled at (570666): [] _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 61.788790] hardirqs last disabled at (570665): [] _raw_spin_lock_irqsave+0x6f/0xcd [ 61.798470] softirqs last enabled at (570620): [] __do_softirq+0x633/0x921 [ 61.807146] softirqs last disabled at (570625): [] run_ksoftirqd+0x8e/0x110 [ 61.815839] [ 61.815839] other info that might help us debug this: [ 61.822634] Possible unsafe locking scenario: [ 61.822634] [ 61.828775] CPU0 [ 61.831337] ---- [ 61.833896] lock(&(&local->client_conns_lock)->rlock); [ 61.839325] [ 61.842060] lock(&(&local->client_conns_lock)->rlock); [ 61.847956] [ 61.847956] *** DEADLOCK *** [ 61.847956] [ 61.854043] 1 lock held by ksoftirqd/0/9: [ 61.858202] #0: 00000000dda251d6 (rcu_callback){....}, at: rcu_process_callbacks+0xc79/0x1a30 [ 61.866998] [ 61.866998] stack backtrace: [ 61.872634] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.19.105-syzkaller #0 [ 61.879911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.889568] Call Trace: [ 61.892151] dump_stack+0x197/0x210 [ 61.895806] print_usage_bug.cold+0x330/0x42a [ 61.900537] ? save_stack_trace+0x1a/0x20 [ 61.904784] mark_lock+0xd1b/0x1370 [ 61.908411] ? check_usage_backwards+0x340/0x340 [ 61.913411] __lock_acquire+0xc62/0x49c0 [ 61.917476] ? mark_held_locks+0x100/0x100 [ 61.921814] ? save_stack+0x45/0xd0 [ 61.925577] ? __kasan_slab_free+0x102/0x150 [ 61.930182] ? kasan_slab_free+0xe/0x10 [ 61.934320] ? kfree+0xcf/0x220 [ 61.937596] ? mark_held_locks+0x100/0x100 [ 61.941829] ? find_held_lock+0x35/0x130 [ 61.946149] ? debug_object_deactivate+0x1e4/0x360 [ 61.951180] ? mark_held_locks+0x100/0x100 [ 61.955549] ? debug_object_deactivate+0x1e4/0x360 [ 61.960798] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 61.965952] ? lockdep_hardirqs_on+0x19b/0x5d0 [ 61.970596] lock_acquire+0x16f/0x3f0 [ 61.974453] ? rxrpc_put_client_conn+0x683/0xc20 [ 61.979329] _raw_spin_lock+0x2f/0x40 [ 61.983565] ? rxrpc_put_client_conn+0x683/0xc20 [ 61.988469] rxrpc_put_client_conn+0x683/0xc20 [ 61.993036] ? rxrpc_rcu_destroy_call+0xbd/0x200 [ 61.997840] ? rxrpc_process_call.cold+0x20/0x20 [ 62.002708] rxrpc_rcu_destroy_call+0xbd/0x200 [ 62.011293] rcu_process_callbacks+0xba0/0x1a30 [ 62.015949] ? __rcu_read_unlock+0x170/0x170 [ 62.020363] ? sched_clock+0x2e/0x50 [ 62.024099] __do_softirq+0x25c/0x921 [ 62.027912] ? firmware_map_remove+0x1a6/0x1a6 [ 62.032498] ? takeover_tasklets+0x7b0/0x7b0 [ 62.037057] run_ksoftirqd+0x8e/0x110 [ 62.040942] smpboot_thread_fn+0x6a3/0xa30 [ 62.045311] ? sort_range+0x30/0x30 [ 62.048936] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 62.054965] ? __kthread_parkme+0xfb/0x1b0 [ 62.059185] kthread+0x354/0x420 [ 62.062710] ? sort_range+0x30/0x30 [ 62.066441] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 62.072071] ret_from_fork+0x24/0x30