[ 89.061287][ T27] audit: type=1400 audit(1578132038.765:37): avc: denied { watch } for pid=10212 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 89.085252][ T27] audit: type=1400 audit(1578132038.765:38): avc: denied { watch } for pid=10212 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 [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 89.417694][ T27] audit: type=1800 audit(1578132039.125:39): pid=10125 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 [ 89.439476][ T27] audit: type=1800 audit(1578132039.125:40): pid=10125 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: [ 93.074291][ T27] audit: type=1400 audit(1578132042.775:41): avc: denied { map } for pid=10303 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 '10.128.0.4' (ECDSA) to the list of known hosts. [ 685.395475][ T27] audit: type=1400 audit(1578132635.105:42): avc: denied { map } for pid=10315 comm="syz-executor724" path="/root/syz-executor724636348" 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 [ 685.441779][T10322] IPVS: ftp: loaded support on port[0] = 21 [ 685.449045][T10323] IPVS: ftp: loaded support on port[0] = 21 [ 685.455772][T10324] IPVS: ftp: loaded support on port[0] = 21 [ 685.468237][T10326] IPVS: ftp: loaded support on port[0] = 21 [ 685.477703][T10325] IPVS: ftp: loaded support on port[0] = 21 [ 685.486401][T10327] IPVS: ftp: loaded support on port[0] = 21 [ 685.602540][ T27] audit: type=1400 audit(1578132635.305:43): avc: denied { create } for pid=10324 comm="syz-executor724" 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 [ 685.630200][ T27] audit: type=1400 audit(1578132635.305:44): avc: denied { write } for pid=10324 comm="syz-executor724" 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 [ 685.655477][ T27] audit: type=1400 audit(1578132635.305:45): avc: denied { read } for pid=10324 comm="syz-executor724" 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 [ 685.655504][ T27] audit: type=1400 audit(1578132635.315:46): avc: denied { open } for pid=10328 comm="syz-executor724" 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 [ 685.655527][ T27] audit: type=1400 audit(1578132635.315:47): avc: denied { kernel } for pid=10328 comm="syz-executor724" 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 [ 685.741254][ C1] hrtimer: interrupt took 31901 ns [ 790.794349][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 790.801365][ C1] (detected by 1, t=10502 jiffies, g=10557, q=3) [ 790.808010][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295016188-4295005686), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 790.822772][ C1] syz-executor724 R running task 23704 10332 10322 0x80004000 [ 790.831032][ C1] Call Trace: [ 790.834337][ C1] [ 790.837401][ C1] sched_show_task.cold+0x2ee/0x35d [ 790.843273][ C1] ? can_nice.part.0+0x20/0x20 [ 790.848403][ C1] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 790.854471][ C1] rcu_sched_clock_irq.cold+0xaf4/0xc02 [ 790.860439][ C1] update_process_times+0x2d/0x70 [ 790.865548][ C1] tick_sched_handle+0xa2/0x190 [ 790.870428][ C1] tick_sched_timer+0x53/0x140 [ 790.875293][ C1] __hrtimer_run_queues+0x364/0xe40 [ 790.880505][ C1] ? tick_sched_do_timer+0x1b0/0x1b0 [ 790.885831][ C1] ? hrtimer_init+0x330/0x330 [ 790.890515][ C1] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 790.896695][ C1] ? ktime_get_update_offsets_now+0x2ce/0x430 [ 790.902790][ C1] hrtimer_interrupt+0x314/0x770 [ 790.907834][ C1] smp_apic_timer_interrupt+0x160/0x610 [ 790.913515][ C1] apic_timer_interrupt+0xf/0x20 [ 790.918448][ C1] [ 790.921452][ C1] RIP: 0010:get_page_from_freelist+0x1a6c/0x4290 [ 790.928217][ C1] Code: c0 d8 34 93 89 48 c1 e8 03 80 3c 18 00 0f 85 ae 25 00 00 48 83 3d 6b 43 e9 07 00 0f 84 82 09 00 00 48 8b bd 68 fe ff ff 57 9d <0f> 1f 44 00 00 e9 44 fc ff ff 48 8b 85 40 ff ff ff 48 8d 78 18 48 [ 790.949047][ C1] RSP: 0018:ffffc90001f1e9e8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 790.958163][ C1] RAX: 1ffffffff132669b RBX: dffffc0000000000 RCX: 0000000000000006 [ 790.966340][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282 [ 790.974353][ C1] RBP: ffffc90001f1eb98 R08: 1ffffffff1659dbc R09: fffffbfff1659dbd [ 790.982368][ C1] R10: fffffbfff1659dbc R11: ffffffff8b2cede7 R12: 0000000000000004 [ 790.990537][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: ffffea0000ce29c8 [ 790.998578][ C1] ? __isolate_free_page+0x4c0/0x4c0 [ 791.003900][ C1] ? ___might_sleep+0x163/0x2c0 [ 791.009019][ C1] ? __might_sleep+0x95/0x190 [ 791.013789][ C1] __alloc_pages_nodemask+0x2d0/0x910 [ 791.019192][ C1] ? __alloc_pages_slowpath+0x2920/0x2920 [ 791.025209][ C1] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 791.031734][ C1] alloc_pages_current+0x107/0x210 [ 791.037291][ C1] __page_cache_alloc+0x29d/0x490 [ 791.042364][ C1] ? __do_page_cache_readahead+0x2e0/0x5d0 [ 791.048195][ C1] __do_page_cache_readahead+0x1c9/0x5d0 [ 791.053875][ C1] ? read_pages+0x610/0x610 [ 791.058402][ C1] ? ondemand_readahead+0x163/0xd30 [ 791.063626][ C1] ondemand_readahead+0x55c/0xd30 [ 791.068671][ C1] page_cache_async_readahead+0x437/0x7c0 [ 791.075364][ C1] generic_file_read_iter+0x13c0/0x2cf0 [ 791.081456][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 791.087023][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 791.092543][ C1] ? __this_cpu_preempt_check+0x2c/0x190 [ 791.098622][ C1] ? filemap_write_and_wait_range+0x1d0/0x1d0 [ 791.104748][ C1] ? loop3+0x56/0x37d [ 791.109070][ C1] ext4_file_read_iter+0x1db/0x640 [ 791.115021][ C1] new_sync_read+0x4d7/0x800 [ 791.119711][ C1] ? vfs_dedupe_file_range+0x780/0x780 [ 791.125201][ C1] __vfs_read+0xe1/0x110 [ 791.129578][ C1] integrity_kernel_read+0x157/0x210 [ 791.134871][ C1] ? integrity_inode_free+0x330/0x330 [ 791.140343][ C1] ? sha256_avx2_update+0x2d/0x40 [ 791.145556][ C1] ima_calc_file_hash_tfm+0x2e3/0x3e0 [ 791.150959][ C1] ? ima_calc_field_array_hash_tfm.isra.0+0x540/0x540 [ 791.158314][ C1] ? lock_downgrade+0x920/0x920 [ 791.163224][ C1] ? __kasan_check_write+0x14/0x20 [ 791.168467][ C1] ? __brelse+0x95/0xb0 [ 791.172669][ C1] ? ext4_xattr_ibody_get+0x110/0x550 [ 791.178176][ C1] ? __kasan_check_write+0x14/0x20 [ 791.183542][ C1] ? up_read+0x1cd/0x810 [ 791.187811][ C1] ? down_read_non_owner+0x490/0x490 [ 791.193376][ C1] ? ext4_xattr_get+0x19e/0xab0 [ 791.198247][ C1] ima_calc_file_hash+0x1aa/0x570 [ 791.203466][ C1] ima_collect_measurement+0x534/0x5f0 [ 791.209182][ C1] ? ima_get_action+0xa0/0xa0 [ 791.214067][ C1] process_measurement+0xd45/0x1850 [ 791.219303][ C1] ? mmap_violation_check+0x200/0x200 [ 791.224961][ C1] ? mark_lock+0xc2/0x1220 [ 791.229403][ C1] ? __kasan_check_read+0x11/0x20 [ 791.235678][ C1] ? __lock_acquire+0x8a0/0x4a00 [ 791.240973][ C1] ? selinux_task_getsecid+0x176/0x2d0 [ 791.247430][ C1] ? find_held_lock+0x35/0x130 [ 791.252201][ C1] ? selinux_task_getsecid+0x176/0x2d0 [ 791.257771][ C1] ? lock_downgrade+0x920/0x920 [ 791.262633][ C1] ? rcu_read_lock_held+0x9c/0xb0 [ 791.268100][ C1] ? __kasan_check_read+0x11/0x20 [ 791.273135][ C1] ? selinux_task_getsecid+0x198/0x2d0 [ 791.278757][ C1] ima_file_check+0xc5/0x110 [ 791.283468][ C1] ? process_measurement+0x1850/0x1850 [ 791.289436][ C1] path_openat+0x1138/0x4500 [ 791.294313][ C1] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 791.301164][ C1] ? kasan_slab_alloc+0xf/0x20 [ 791.305932][ C1] ? kmem_cache_alloc+0x121/0x710 [ 791.311497][ C1] ? getname_flags+0xd6/0x5b0 [ 791.316262][ C1] ? getname+0x1a/0x20 [ 791.320351][ C1] ? do_sys_open+0x2c9/0x5d0 [ 791.325429][ C1] ? path_lookupat.isra.0+0x8d0/0x8d0 [ 791.330805][ C1] ? mark_held_locks+0xa4/0xf0 [ 791.335578][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 791.341061][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 791.347039][ C1] ? __alloc_fd+0x487/0x620 [ 791.351554][ C1] do_filp_open+0x1a1/0x280 [ 791.356236][ C1] ? may_open_dev+0x100/0x100 [ 791.361016][ C1] ? do_raw_spin_unlock+0x181/0x270 [ 791.391515][ C1] ? _raw_spin_unlock+0x28/0x40 [ 791.396835][ C1] ? __alloc_fd+0x487/0x620 [ 791.401355][ C1] do_sys_open+0x3fe/0x5d0 [ 791.405777][ C1] ? filp_open+0x80/0x80 [ 791.427868][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 791.433336][ C1] ? do_syscall_64+0x26/0x790 [ 791.438148][ C1] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 791.444223][ C1] ? do_syscall_64+0x26/0x790 [ 791.449259][ C1] __x64_sys_open+0x7e/0xc0 [ 791.453769][ C1] do_syscall_64+0xfa/0x790 [ 791.458302][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 791.465259][ C1] RIP: 0033:0x4476f9 [ 791.471357][ C1] 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 [ 791.493428][ C1] RSP: 002b:00007fe778c7edb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 791.501952][ C1] RAX: ffffffffffffffda RBX: 00000000006ddc28 RCX: 00000000004476f9 [ 791.510019][ C1] RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000100 [ 791.518320][ C1] RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 [ 791.526300][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c [ 791.535249][ C1] R13: 00007ffd2d04e6ff R14: 00007fe778c7f9c0 R15: 0000000000000000 [ 791.543347][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g10557 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 791.554537][ C1] rcu: RCU grace-period kthread stack dump: [ 791.560436][ C1] rcu_preempt R running task 29264 10 2 0x80004000 [ 791.568336][ C1] Call Trace: [ 791.571698][ C1] __schedule+0x934/0x1f90 [ 791.576133][ C1] ? __sched_text_start+0x8/0x8 [ 791.580987][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 791.587152][ C1] ? schedule_timeout+0x47c/0xc50 [ 791.592198][ C1] ? lockdep_hardirqs_on+0x421/0x5e0 [ 791.597509][ C1] schedule+0xdc/0x2b0 [ 791.601588][ C1] schedule_timeout+0x486/0xc50 [ 791.606533][ C1] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 791.612434][ C1] ? usleep_range+0x170/0x170 [ 791.617202][ C1] ? trace_hardirqs_on+0x67/0x240 [ 791.622245][ C1] ? __next_timer_interrupt+0x1a0/0x1a0 [ 791.627810][ C1] ? swake_up_one+0x60/0x60 [ 791.632323][ C1] rcu_gp_kthread+0x9b2/0x18d0 [ 791.637113][ C1] ? rcu_barrier+0x350/0x350 [ 791.641714][ C1] ? trace_hardirqs_on+0x67/0x240 [ 791.646753][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 791.653092][ C1] ? __kthread_parkme+0x108/0x1c0 [ 791.658128][ C1] ? __kasan_check_read+0x11/0x20 [ 791.664988][ C1] kthread+0x361/0x430 [ 791.669072][ C1] ? rcu_barrier+0x350/0x350 [ 791.673661][ C1] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 791.679407][ C1] ret_from_fork+0x24/0x30