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.
[....] startpar: service(s) returned failure: ssh ...[?25l[?1c7[1G[[31mFAIL[39;49m8[?25h[?0c [31mfailed![39;49m
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 50.190068] kauditd_printk_skb: 4 callbacks suppressed
[ 50.190083] audit: type=1400 audit(1547894705.694:35): avc: denied { map } for pid=8415 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 '10.128.0.7' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
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executing program
[ 1038.376862] audit: type=1400 audit(1547895693.874:36): avc: denied { map } for pid=8427 comm="syz-executor786" path="/root/syz-executor786610373" 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
[ 1038.441996] hrtimer: interrupt took 42996 ns
[ 1143.619277] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 1143.625564] rcu: (detected by 0, t=10502 jiffies, g=6469, q=3)
[ 1143.631630] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295051508-4295041006), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 1143.644278] syz-executor786 R running task 21544 8437 8433 0x00000000
[ 1143.651530] Call Trace:
[ 1143.654115] <IRQ>
[ 1143.656367] sched_show_task.cold+0x273/0x2d5
[ 1143.660905] ? set_rq_offline.part.0+0x140/0x140
[ 1143.665719] ? kmsg_dump_rewind_nolock+0xe4/0xe4
[ 1143.670537] ? notifier_call_chain+0x179/0x380
[ 1143.675184] ? __sanitizer_cov_trace_cmp8+0x18/0x20
[ 1143.680210] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1143.685822] print_other_cpu_stall.cold+0x7f2/0x8bb
[ 1143.690860] ? print_cpu_stall+0x170/0x170
[ 1143.695110] ? add_lock_to_list.isra.0+0x450/0x450
[ 1143.700048] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1143.705613] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1143.711159] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1143.716758] ? check_preemption_disabled+0x48/0x290
[ 1143.721785] ? __this_cpu_preempt_check+0x1d/0x30
[ 1143.726665] ? rcu_preempt_need_deferred_qs+0x71/0x1a0
[ 1143.731962] ? do_trace_rcu_torture_read+0x10/0x10
[ 1143.736897] ? get_state_synchronize_rcu+0xd0/0xd0
[ 1143.741839] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1143.747387] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1143.752964] ? check_preemption_disabled+0x48/0x290
[ 1143.757998] rcu_check_callbacks+0xf36/0x1380
[ 1143.762501] ? account_system_index_time+0x31a/0x5f0
[ 1143.767607] ? rcutree_dead_cpu+0x10/0x10
[ 1143.771788] ? trace_hardirqs_off+0xb8/0x310
[ 1143.776211] ? __lock_is_held+0xb6/0x140
[ 1143.780290] ? trace_hardirqs_on_caller+0x310/0x310
[ 1143.785311] ? check_preemption_disabled+0x48/0x290
[ 1143.790378] ? raise_softirq+0x189/0x430
[ 1143.794448] ? account_system_index_time+0x33f/0x5f0
[ 1143.799590] ? raise_softirq_irqoff+0x2d0/0x2d0
[ 1143.804261] ? check_preemption_disabled+0x48/0x290
[ 1143.809284] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 1143.814860] ? hrtimer_run_queues+0x99/0x410
[ 1143.819280] ? run_local_timers+0x194/0x230
[ 1143.823607] ? timer_clear_idle+0x90/0x90
[ 1143.827763] ? account_process_tick+0x27f/0x350
[ 1143.832446] update_process_times+0x32/0x80
[ 1143.836801] tick_sched_handle+0xa2/0x190
[ 1143.841021] tick_sched_timer+0x47/0x130
[ 1143.845097] __hrtimer_run_queues+0x3a7/0x1050
[ 1143.849692] ? tick_sched_do_timer+0x1b0/0x1b0
[ 1143.854281] ? hrtimer_start_range_ns+0xda0/0xda0
[ 1143.859207] ? kvm_clock_read+0x18/0x30
[ 1143.863189] ? __sanitizer_cov_trace_cmp4+0x16/0x20
[ 1143.868216] ? ktime_get_update_offsets_now+0x3d5/0x5e0
[ 1143.873624] ? do_timer+0x50/0x50
[ 1143.877092] ? add_lock_to_list.isra.0+0x450/0x450
[ 1143.882024] ? rcu_softirq_qs+0x20/0x20
[ 1143.886009] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1143.891568] hrtimer_interrupt+0x314/0x770
[ 1143.895897] smp_apic_timer_interrupt+0x18d/0x760
[ 1143.900760] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1143.905609] ? smp_call_function_single_interrupt+0x640/0x640
[ 1143.911497] ? trace_hardirqs_off+0x310/0x310
[ 1143.916014] ? task_prio+0x50/0x50
[ 1143.919564] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 1143.925123] ? check_preemption_disabled+0x48/0x290
[ 1143.930166] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1143.935035] apic_timer_interrupt+0xf/0x20
[ 1143.939278] </IRQ>
[ 1143.941523] RIP: 0010:write_comp_data+0x9/0x70
[ 1143.946124] Code: 12 00 00 8b 80 dc 12 00 00 48 8b 11 48 83 c2 01 48 39 d0 76 07 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 40 ee 01 00 <65> 8b 05 80 ee 7f 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 83
[ 1143.965030] RSP: 0018:ffff888080466f58 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
[ 1143.972748] RAX: 000000000000226d RBX: ffff888080467140 RCX: ffffffff87f08bdf
[ 1143.980015] RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000007
[ 1143.987287] RBP: ffff888080466f60 R08: ffff888096338480 R09: ffffed1015cc5b90
[ 1143.994554] R10: ffffed1015cc5b8f R11: ffff8880ae62dc7b R12: 1ffff1101008cdf0
[ 1144.001849] R13: ffff888092b64102 R14: ffff888092b64102 R15: ffff888080467158
[ 1144.009132] ? xas_start+0x1cf/0x720
[ 1144.012852] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 1144.018419] xas_start+0x1cf/0x720
[ 1144.021974] ? xas_pause+0x490/0x490
[ 1144.025690] ? check_preemption_disabled+0x48/0x290
[ 1144.030719] ? rcu_dynticks_curr_cpu_in_eqs+0xa2/0x170
[ 1144.036094] ? rcu_softirq_qs+0x20/0x20
[ 1144.040088] xas_load+0x21/0x160
[ 1144.043523] find_get_entry+0x350/0x10a0
[ 1144.047606] ? filemap_map_pages+0x1cb0/0x1cb0
[ 1144.052210] ? mark_held_locks+0x100/0x100
[ 1144.056455] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1144.062038] ? iov_iter_advance+0x354/0x1490
[ 1144.066473] ? add_lock_to_list.isra.0+0x450/0x450
[ 1144.071415] ? iov_iter_npages+0xf20/0xf20
[ 1144.075699] ? inode_init_owner+0x340/0x340
[ 1144.080034] pagecache_get_page+0xe6/0x1020
[ 1144.084402] ? ext4_file_write_iter+0x389/0x1410
[ 1144.089168] ? add_to_page_cache_lru+0xd20/0xd20
[ 1144.094095] ? find_held_lock+0x35/0x120
[ 1144.098177] ? __lock_is_held+0xb6/0x140
[ 1144.102250] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1144.107867] ? kasan_check_read+0x11/0x20
[ 1144.112030] ? ___might_sleep+0x1e7/0x310
[ 1144.116193] ? arch_local_save_flags+0x50/0x50
[ 1144.120780] ? rcu_softirq_qs+0x20/0x20
[ 1144.124780] generic_file_read_iter+0x7b2/0x2d40
[ 1144.129576] ? filemap_write_and_wait_range+0xd0/0xd0
[ 1144.134779] ? save_stack+0xa9/0xd0
[ 1144.138423] ? save_stack+0x45/0xd0
[ 1144.142056] ? __kasan_slab_free+0x102/0x150
[ 1144.146481] ? kasan_slab_free+0xe/0x10
[ 1144.150458] ? kfree+0xcf/0x230
[ 1144.153802] ? iter_file_splice_write+0x74f/0xfc0
[ 1144.158674] ? direct_splice_actor+0x126/0x1a0
[ 1144.163270] ? splice_direct_to_actor+0x3be/0x9d0
[ 1144.168143] ? do_splice_direct+0x2c7/0x420
[ 1144.172544] ? do_sendfile+0x61a/0xe60
[ 1144.176461] ? __x64_sys_sendfile64+0x15a/0x240
[ 1144.181159] ? do_syscall_64+0x1a3/0x800
[ 1144.185228] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1144.190614] ? print_usage_bug+0xd0/0xd0
[ 1144.194680] ? do_raw_spin_unlock+0xa0/0x330
[ 1144.199098] ? trace_hardirqs_on_caller+0x310/0x310
[ 1144.204141] ? do_raw_spin_trylock+0x270/0x270
[ 1144.208756] ? mark_held_locks+0xb1/0x100
[ 1144.212913] ? trace_hardirqs_on_caller+0x310/0x310
[ 1144.217966] ? add_lock_to_list.isra.0+0x450/0x450
[ 1144.222913] ? kfree+0x173/0x230
[ 1144.226303] ? lockdep_hardirqs_on+0x415/0x5d0
[ 1144.230909] ? trace_hardirqs_on+0xbd/0x310
[ 1144.235246] ? iter_file_splice_write+0x74f/0xfc0
[ 1144.240105] ? __lock_is_held+0xb6/0x140
[ 1144.244180] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1144.249755] ? fsnotify+0x4f5/0xed0
[ 1144.253392] ? arch_local_save_flags+0x50/0x50
[ 1144.258000] ext4_file_read_iter+0x180/0x3c0
[ 1144.262420] generic_file_splice_read+0x5c4/0xa90
[ 1144.267270] ? add_to_pipe+0x350/0x350
[ 1144.271182] ? rw_verify_area+0x118/0x360
[ 1144.275334] ? add_to_pipe+0x350/0x350
[ 1144.279231] do_splice_to+0x12a/0x190
[ 1144.283035] splice_direct_to_actor+0x31b/0x9d0
[ 1144.287768] ? generic_pipe_buf_nosteal+0x10/0x10
[ 1144.292620] ? do_splice_to+0x190/0x190
[ 1144.296613] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1144.302158] ? rw_verify_area+0x118/0x360
[ 1144.306313] do_splice_direct+0x2c7/0x420
[ 1144.310470] ? splice_direct_to_actor+0x9d0/0x9d0
[ 1144.315583] ? rcu_read_lock_sched_held+0x110/0x130
[ 1144.320609] ? rcu_sync_lockdep_assert+0x73/0xb0
[ 1144.325366] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1144.330901] ? __sb_start_write+0x1ac/0x360
[ 1144.335227] do_sendfile+0x61a/0xe60
[ 1144.338958] ? do_compat_pwritev64+0x1c0/0x1c0
[ 1144.343553] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 1144.349099] ? _copy_from_user+0xdd/0x150
[ 1144.353256] __x64_sys_sendfile64+0x15a/0x240
[ 1144.357757] ? __ia32_sys_sendfile+0x2a0/0x2a0
[ 1144.362364] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 1144.367153] do_syscall_64+0x1a3/0x800
[ 1144.371050] ? syscall_return_slowpath+0x5f0/0x5f0
[ 1144.375992] ? prepare_exit_to_usermode+0x232/0x3b0
[ 1144.381019] ? trace_hardirqs_off_thunk+0x1a/0x1c
[ 1144.385876] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1144.391098] RIP: 0033:0x446a19
[ 1144.394317] Code: e8 dc e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 4b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[ 1144.413218] RSP: 002b:00007f53e33cfda8 EFLAGS: 00000297 ORIG_RAX: 0000000000000028
[ 1144.420947] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000446a19
[ 1144.428219] RDX: 0000000020000380 RSI: 0000000000000003 RDI: 0000000000000003
[ 1144.435491] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000
[ 1144.442765] R10: 00008080fffffffe R11: 0000000000000297 R12: 00000000006dcc2c
[ 1144.450065] R13: 00008080fffffffe R14: 00007f53e33d09c0 R15: 00000000006dcd2c
[ 1144.457392] rcu: rcu_preempt kthread starved for 10502 jiffies! g6469 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 1144.468055] rcu: RCU grace-period kthread stack dump:
[ 1144.473348] rcu_preempt R running task 26200 10 2 0x80000000
[ 1144.480564] Call Trace:
[ 1144.483177] __schedule+0x897/0x1e60
[ 1144.486924] ? pci_mmcfg_check_reserved+0x170/0x170
[ 1144.491953] ? add_timer_on+0x9c0/0x9c0
[ 1144.495951] ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 1144.501065] ? trace_hardirqs_on+0xbd/0x310
[ 1144.505427] ? kasan_check_read+0x11/0x20
[ 1144.509730] ? prepare_to_swait_event+0x20a/0x7e0
[ 1144.514582] schedule+0xfe/0x350
[ 1144.517971] ? __schedule+0x1e60/0x1e60
[ 1144.521964] ? __next_timer_interrupt+0x1a0/0x1a0
[ 1144.526841] schedule_timeout+0x14a/0x250
[ 1144.530995] ? usleep_range+0x1b0/0x1b0
[ 1144.534981] ? __next_timer_interrupt+0x1a0/0x1a0
[ 1144.539839] ? trace_hardirqs_on+0xbd/0x310
[ 1144.544184] ? ___might_sleep+0x1e7/0x310
[ 1144.548357] rcu_gp_fqs_loop+0x6ba/0x970
[ 1144.552434] ? rcu_gp_fqs_check_wake+0x160/0x160
[ 1144.557197] ? finish_swait+0x25a/0x490
[ 1144.561195] ? rcu_qs+0x110/0x110
[ 1144.564682] ? lockdep_hardirqs_on+0x415/0x5d0
[ 1144.569270] ? trace_hardirqs_on+0xbd/0x310
[ 1144.573599] ? cmp_and_merge_page+0x31b0/0x3470
[ 1144.578275] ? trace_hardirqs_off_caller+0x300/0x300
[ 1144.583388] ? prepare_to_swait_event+0x20a/0x7e0
[ 1144.588257] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 1144.593371] ? finish_swait+0x25a/0x490
[ 1144.597351] ? schedule+0x108/0x350
[ 1144.600988] ? swake_up_locked+0x340/0x340
[ 1144.605232] ? trace_hardirqs_off_caller+0x300/0x300
[ 1144.610345] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1144.615901] rcu_gp_kthread+0x2bb/0xc10
[ 1144.619889] ? rcu_gp_init+0x1320/0x1320
[ 1144.623973] ? __kthread_parkme+0xc3/0x1b0
[ 1144.628228] ? find_held_lock+0x35/0x120
[ 1144.632309] ? __kthread_parkme+0xc3/0x1b0
[ 1144.636597] ? __lock_acquire+0x1f80/0x4a30
[ 1144.640958] ? rwsem_down_read_failed_killable+0x911/0xaf0
[ 1144.646601] ? rwsem_down_read_failed_killable+0x911/0xaf0
[ 1144.652233] ? lockdep_hardirqs_on+0x415/0x5d0
[ 1144.656831] ? trace_hardirqs_on+0xbd/0x310
[ 1144.661159] ? __kthread_parkme+0xc3/0x1b0
[ 1144.665400] ? trace_hardirqs_off_caller+0x300/0x300
[ 1144.670508] ? do_raw_spin_trylock+0x270/0x270
[ 1144.675115] ? schedule+0x108/0x350
[ 1144.678774] ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 1144.683893] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 1144.689434] ? __kthread_parkme+0xfb/0x1b0
[ 1144.693679] kthread+0x357/0x430
[ 1144.697050] ? rcu_gp_init+0x1320/0x1320
[ 1144.701150] ? kthread_stop+0x920/0x920
[ 1144.705135] ret_from_fork+0x3a/0x50
[ 1144.709309] sched: RT throttling activated
executing program
executing program