[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context[ 81.014142][ T27] audit: type=1400 audit(1578071697.618:38): avc: denied { watch } for pid=10033 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 81.162460][ T27] audit: type=1800 audit(1578071697.808:39): pid=9941 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=2432 res=0 [ 81.184266][ T27] audit: type=1800 audit(1578071697.808:40): pid=9941 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 83.272793][ T27] audit: type=1400 audit(1578071699.918:41): avc: denied { map } for pid=10117 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 [ 204.469520][ T27] audit: type=1400 audit(1578071821.118:42): avc: denied { map } for pid=10125 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.132' (ECDSA) to the list of known hosts. [ 711.587566][ T27] audit: type=1400 audit(1578072328.238:43): avc: denied { map } for pid=10132 comm="syz-executor758" path="/root/syz-executor758404133" 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 [ 711.629992][T10140] IPVS: ftp: loaded support on port[0] = 21 [ 711.641874][T10141] IPVS: ftp: loaded support on port[0] = 21 [ 711.652152][T10139] IPVS: ftp: loaded support on port[0] = 21 [ 711.661873][T10143] IPVS: ftp: loaded support on port[0] = 21 [ 711.671744][T10144] IPVS: ftp: loaded support on port[0] = 21 [ 711.681116][T10142] IPVS: ftp: loaded support on port[0] = 21 [ 711.799885][ T27] audit: type=1400 audit(1578072328.448:44): avc: denied { create } for pid=10141 comm="syz-executor758" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 executing program [ 711.843049][ T27] audit: type=1400 audit(1578072328.478:45): avc: denied { write } for pid=10141 comm="syz-executor758" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 711.868098][ T27] audit: type=1400 audit(1578072328.478:46): avc: denied { read } for pid=10141 comm="syz-executor758" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 executing program [ 711.893627][ T27] audit: type=1400 audit(1578072328.488:47): avc: denied { open } for pid=10145 comm="syz-executor758" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=perf_event permissive=1 [ 711.917960][ T27] audit: type=1400 audit(1578072328.488:48): avc: denied { kernel } for pid=10145 comm="syz-executor758" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=perf_event permissive=1 executing program [ 711.964133][ C0] hrtimer: interrupt took 33078 ns [ 816.994782][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 817.001865][ C0] (detected by 0, t=10502 jiffies, g=10133, q=46) [ 817.008377][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4295018832-4295008329), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 817.021750][ C0] syz-executor758 R running task 23704 10149 10143 0x80004000 [ 817.029660][ C0] Call Trace: [ 817.032941][ C0] [ 817.035799][ C0] sched_show_task.cold+0x2ee/0x35d [ 817.041000][ C0] ? can_nice.part.0+0x20/0x20 [ 817.045765][ C0] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 817.051495][ C0] rcu_sched_clock_irq.cold+0xaf4/0xc02 [ 817.057056][ C0] update_process_times+0x2d/0x70 [ 817.062086][ C0] tick_sched_handle+0xa2/0x190 [ 817.066940][ C0] tick_sched_timer+0x53/0x140 [ 817.071704][ C0] __hrtimer_run_queues+0x364/0xe40 [ 817.076915][ C0] ? tick_sched_do_timer+0x1b0/0x1b0 [ 817.082203][ C0] ? hrtimer_init+0x330/0x330 [ 817.086884][ C0] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 817.092631][ C0] ? ktime_get_update_offsets_now+0x2ce/0x430 [ 817.098708][ C0] hrtimer_interrupt+0x314/0x770 [ 817.103661][ C0] smp_apic_timer_interrupt+0x160/0x610 [ 817.109211][ C0] apic_timer_interrupt+0xf/0x20 [ 817.114157][ C0] [ 817.117100][ C0] RIP: 0010:loop1+0x45f/0x892 [ 817.121804][ C0] Code: e6 44 01 f0 44 01 f8 01 f0 c5 4d fe 8f c0 81 3e 89 c5 7d 7f 4c 3c 40 89 c6 c4 63 7b f0 ea 19 c4 63 7b f0 f2 0b 44 03 5c 3c 40 <09> ce c4 e3 55 0f c4 04 45 89 cf c4 63 7b f0 e0 0d 45 31 f5 45 31 [ 817.141411][ C0] RSP: 0018:ffffc90001ecf080 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 817.149826][ C0] RAX: 000000003b2f3fc4 RBX: 00000000459b3315 RCX: 00000000c5620a24 [ 817.157801][ C0] RDX: 00000000ca340699 RSI: 000000003b2f3fc4 RDI: 0000000000000100 [ 817.165778][ C0] RBP: ffffc90001ecf318 R08: 0000000089e134e7 R09: 0000000041ed1404 [ 817.173749][ C0] R10: 000000001b10d762 R11: 00000000d31ce98c R12: 0000000001813005 [ 817.181734][ C0] R13: 000000001a034ce5 R14: 00000000d3394680 R15: 000000009815a0bd [ 817.189791][ C0] ? _sha256_update+0x1d2/0x200 [ 817.194648][ C0] ? done_hash+0x12/0x12 [ 817.198905][ C0] sha256_avx2_update+0x2d/0x40 [ 817.203759][ C0] crypto_shash_update+0xc9/0x120 [ 817.208835][ C0] ima_calc_file_hash_tfm+0x321/0x3e0 [ 817.214215][ C0] ? ima_calc_field_array_hash_tfm.isra.0+0x540/0x540 [ 817.220977][ C0] ? __kasan_check_read+0x11/0x20 [ 817.226016][ C0] ? mark_held_locks+0xa4/0xf0 [ 817.230790][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 817.236251][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 817.241708][ C0] ? lockdep_hardirqs_on+0x421/0x5e0 [ 817.246994][ C0] ? retint_kernel+0x2b/0x2b [ 817.251607][ C0] ? trace_hardirqs_on_caller+0x6a/0x240 [ 817.257252][ C0] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 817.262717][ C0] ? __this_cpu_preempt_check+0x8a/0x190 [ 817.268391][ C0] ? __this_cpu_preempt_check+0x35/0x190 [ 817.274038][ C0] ? retint_kernel+0x2b/0x2b [ 817.278644][ C0] ? ima_calc_file_hash+0x5d/0x570 [ 817.283765][ C0] ima_calc_file_hash+0x1aa/0x570 [ 817.288804][ C0] ima_collect_measurement+0x534/0x5f0 [ 817.294279][ C0] ? ima_get_action+0xa0/0xa0 [ 817.298976][ C0] process_measurement+0xd45/0x1850 [ 817.304190][ C0] ? mmap_violation_check+0x200/0x200 [ 817.309561][ C0] ? mark_lock+0xc2/0x1220 [ 817.314078][ C0] ? __kasan_check_read+0x11/0x20 [ 817.319118][ C0] ? __lock_acquire+0x8a0/0x4a00 [ 817.324079][ C0] ? selinux_task_getsecid+0x176/0x2d0 [ 817.329552][ C0] ? find_held_lock+0x35/0x130 [ 817.334513][ C0] ? selinux_task_getsecid+0x176/0x2d0 [ 817.340093][ C0] ? lock_downgrade+0x920/0x920 [ 817.344952][ C0] ? rcu_read_lock_held+0x9c/0xb0 [ 817.349982][ C0] ? __kasan_check_read+0x11/0x20 [ 817.355017][ C0] ? selinux_task_getsecid+0x198/0x2d0 [ 817.360488][ C0] ima_file_check+0xc5/0x110 [ 817.365085][ C0] ? process_measurement+0x1850/0x1850 [ 817.370560][ C0] path_openat+0x1138/0x4500 [ 817.375153][ C0] ? retint_kernel+0x2b/0x2b [ 817.380184][ C0] ? trace_hardirqs_on_caller+0x6a/0x240 [ 817.385826][ C0] ? getname+0x1a/0x20 [ 817.389913][ C0] ? path_lookupat.isra.0+0x8d0/0x8d0 [ 817.395288][ C0] ? expand_files+0x13b/0x810 [ 817.399966][ C0] ? __alloc_fd+0x487/0x620 [ 817.404474][ C0] do_filp_open+0x1a1/0x280 [ 817.408981][ C0] ? may_open_dev+0x100/0x100 [ 817.413672][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 817.418615][ C0] ? do_raw_spin_unlock+0x181/0x270 [ 817.423826][ C0] ? _raw_spin_unlock+0x28/0x40 [ 817.428677][ C0] ? __alloc_fd+0x487/0x620 [ 817.433199][ C0] do_sys_open+0x3fe/0x5d0 [ 817.437617][ C0] ? filp_open+0x80/0x80 [ 817.441873][ C0] __x64_sys_open+0x7e/0xc0 [ 817.446374][ C0] ? do_syscall_64+0x5b/0x790 [ 817.451056][ C0] do_syscall_64+0xfa/0x790 [ 817.455563][ C0] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 817.461453][ C0] RIP: 0033:0x447709 [ 817.465369][ C0] Code: e8 3c 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 ab 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 817.484973][ C0] RSP: 002b:00007fad9ada8db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 817.493502][ C0] RAX: ffffffffffffffda RBX: 00000000006ddc28 RCX: 0000000000447709 [ 817.501483][ C0] RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000100 [ 817.509460][ C0] RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 [ 817.517437][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c [ 817.525413][ C0] R13: 00007ffd1200009f R14: 00007fad9ada99c0 R15: 0000000000000000 [ 817.533432][ C0] rcu: rcu_preempt kthread starved for 10555 jiffies! g10133 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 817.544787][ C0] rcu: RCU grace-period kthread stack dump: [ 817.550685][ C0] rcu_preempt R running task 29264 10 2 0x80004000 [ 817.558600][ C0] Call Trace: [ 817.561908][ C0] __schedule+0x934/0x1f90 [ 817.566356][ C0] ? __sched_text_start+0x8/0x8 [ 817.571208][ C0] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 817.577033][ C0] ? schedule_timeout+0x47c/0xc50 [ 817.582070][ C0] ? lockdep_hardirqs_on+0x421/0x5e0 [ 817.587362][ C0] schedule+0xdc/0x2b0 [ 817.591477][ C0] schedule_timeout+0x486/0xc50 [ 817.596338][ C0] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 817.602168][ C0] ? usleep_range+0x170/0x170 [ 817.606978][ C0] ? trace_hardirqs_on+0x67/0x240 [ 817.612027][ C0] ? __next_timer_interrupt+0x1a0/0x1a0 [ 817.617735][ C0] ? swake_up_one+0x60/0x60 [ 817.622286][ C0] rcu_gp_kthread+0x9b2/0x18d0 [ 817.627182][ C0] ? rcu_barrier+0x350/0x350 [ 817.631778][ C0] ? trace_hardirqs_on+0x67/0x240 [ 817.636929][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 817.643175][ C0] ? __kthread_parkme+0x108/0x1c0 [ 817.648209][ C0] ? __kasan_check_read+0x11/0x20 [ 817.653254][ C0] kthread+0x361/0x430 [ 817.657334][ C0] ? rcu_barrier+0x350/0x350 [ 817.661935][ C0] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 817.667669][ C0] ret_from_fork+0x24/0x30