[ 37.254849] audit: type=1800 audit(1572602355.772:31): pid=7326 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 37.288209] audit: type=1800 audit(1572602355.772:32): pid=7326 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.27' (ECDSA) to the list of known hosts. syzkaller login: [ 697.713478] kauditd_printk_skb: 3 callbacks suppressed [ 697.713493] audit: type=1400 audit(1572603016.302:36): avc: denied { map } for pid=7512 comm="syz-executor017" path="/root/syz-executor017321398" 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 [ 697.736024] IPVS: ftp: loaded support on port[0] = 21 [ 697.757701] IPVS: ftp: loaded support on port[0] = 21 [ 697.758027] IPVS: ftp: loaded support on port[0] = 21 [ 697.770797] IPVS: ftp: loaded support on port[0] = 21 [ 697.772026] IPVS: ftp: loaded support on port[0] = 21 [ 697.780843] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program [ 697.948542] hrtimer: interrupt took 40350 ns executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 715.978631] audit: type=1800 audit(1572603034.542:37): pid=7536 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 executing program [ 759.976760] audit: type=1800 audit(1572603034.552:38): pid=7547 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 [ 759.999227] audit: type=1800 audit(1572603078.542:39): pid=7557 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 executing program executing program [ 760.064193] audit: type=1800 audit(1572603078.582:40): pid=7561 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 executing program executing program executing program executing program executing program executing program [ 803.963301] audit: type=1800 audit(1572603078.592:41): pid=7559 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 [ 803.987323] audit: type=1800 audit(1572603078.612:42): pid=7560 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 executing program executing program [ 847.978914] audit: type=1800 audit(1572603078.622:43): pid=7563 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 executing program executing program executing program executing program executing program [ 891.963662] audit: type=1800 audit(1572603078.622:44): pid=7568 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 executing program executing program executing program [ 935.958274] audit: type=1800 audit(1572603122.552:45): pid=7574 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 [ 957.958913] audit: type=1800 audit(1572603122.582:46): pid=7578 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 [ 957.982371] audit: type=1800 audit(1572603122.602:47): pid=7580 uid=0 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 op=collect_data cause=failed comm="syz-executor017" name="bus" dev="sda1" ino=2233 res=0 [ 1062.998551] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 1063.004846] rcu: (detected by 1, t=10502 jiffies, g=5309, q=117) [ 1063.011104] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4295043461-4295032959), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 1063.023755] syz-executor017 R running task 25144 7615 7519 0x80000000 [ 1063.031002] Call Trace: [ 1063.033581] [ 1063.035828] sched_show_task.cold+0x2ee/0x35d [ 1063.040364] ? set_rq_offline.part.0+0x140/0x140 [ 1063.045150] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 1063.050163] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1063.055747] rcu_check_callbacks.cold+0xaa1/0xd90 [ 1063.060624] update_process_times+0x32/0x80 [ 1063.064977] tick_sched_handle+0xa2/0x190 [ 1063.069126] tick_sched_timer+0x47/0x130 [ 1063.073198] __hrtimer_run_queues+0x33b/0xdc0 [ 1063.077692] ? tick_sched_do_timer+0x1b0/0x1b0 [ 1063.082291] ? hrtimer_fixup_activate+0x30/0x30 [ 1063.086957] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1063.091973] ? ktime_get_update_offsets_now+0x2d3/0x440 [ 1063.097344] hrtimer_interrupt+0x314/0x770 [ 1063.101690] smp_apic_timer_interrupt+0x111/0x550 [ 1063.106537] apic_timer_interrupt+0xf/0x20 [ 1063.110765] [ 1063.113061] RIP: 0010:mem_cgroup_commit_charge+0x1ba/0x4a0 [ 1063.118690] Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 5a 02 00 00 48 83 3d ab 2b cb 06 00 0f 84 e2 01 00 00 fb 66 0f 1f 44 00 00 <0f> 1f 44 00 00 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 dd [ 1063.137593] RSP: 0018:ffff8880a9a3ea28 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 1063.145305] RAX: 1ffffffff10e48cb RBX: 0000000000000000 RCX: 1ffff11012df7554 [ 1063.152569] RDX: dffffc0000000000 RSI: ffff888096fbaa80 RDI: ffff888096fbaa7c [ 1063.159837] RBP: ffff8880a9a3ea60 R08: ffffea00011bf908 R09: ffff888096fbaaa0 [ 1063.167102] R10: 0000000000000000 R11: 0000000000000000 R12: ffffea00011bf900 [ 1063.174369] R13: ffff8880aa1c6c00 R14: 0000000000000000 R15: 0000000000000001 [ 1063.181782] ? mem_cgroup_commit_charge+0x182/0x4a0 [ 1063.186970] ? _raw_spin_unlock_irq+0x54/0x90 [ 1063.191604] __add_to_page_cache_locked+0x6ef/0xc20 [ 1063.196827] ? find_lock_entry+0x510/0x510 [ 1063.201087] add_to_page_cache_lru+0x1c9/0x860 [ 1063.205680] ? add_to_page_cache_locked+0x40/0x40 [ 1063.210561] ? memset_erms+0x9/0x10 [ 1063.214188] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 1063.219783] ext4_mpage_readpages+0x414/0x1ae0 [ 1063.224380] ? mpage_end_io+0x4e0/0x4e0 [ 1063.228404] ? __lock_is_held+0xb6/0x140 [ 1063.232507] ext4_readpages+0xda/0x120 [ 1063.236391] ? ext4_bmap+0x440/0x440 [ 1063.240133] read_pages+0x101/0x530 [ 1063.243770] ? find_held_lock+0x35/0x130 [ 1063.247834] ? read_cache_pages+0x670/0x670 [ 1063.252190] ? __page_cache_alloc+0x131/0x450 [ 1063.256725] ? kasan_check_read+0x11/0x20 [ 1063.260879] __do_page_cache_readahead+0x626/0x720 [ 1063.265812] ? read_pages+0x530/0x530 [ 1063.269608] ? page_cache_async_readahead+0x3ab/0x790 [ 1063.274812] ondemand_readahead+0x543/0xcd0 [ 1063.279170] page_cache_async_readahead+0x401/0x790 [ 1063.284194] generic_file_read_iter+0x188d/0x2ac0 [ 1063.289070] ? trace_hardirqs_on_caller+0x6a/0x220 [ 1063.294011] ? filemap_range_has_page+0x290/0x290 [ 1063.298852] ? retint_kernel+0x2d/0x2d [ 1063.302826] ? iov_iter_init+0x25/0x1f0 [ 1063.306807] ext4_file_read_iter+0x180/0x3c0 [ 1063.311248] __vfs_read+0x584/0x800 [ 1063.314894] ? vfs_copy_file_range+0xba0/0xba0 [ 1063.319564] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 1063.325121] ? kernel_fpu_begin+0x220/0x220 [ 1063.329484] ? sha256_update+0x9b/0x200 [ 1063.333494] integrity_kernel_read+0x14a/0x200 [ 1063.338101] ? integrity_inode_free+0x330/0x330 [ 1063.342771] ? ima_calc_file_hash+0x55f/0x970 [ 1063.347294] ima_calc_file_hash+0x510/0x970 [ 1063.351613] ? retint_kernel+0x2d/0x2d [ 1063.355499] ? trace_hardirqs_on_caller+0x6a/0x220 [ 1063.360438] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1063.365452] ? ima_alloc_tfm+0xcd/0xf0 [ 1063.369343] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1063.374878] ? ima_calc_file_hash+0x1a3/0x970 [ 1063.379425] ima_collect_measurement+0x50f/0x5c0 [ 1063.384187] ? ima_get_action+0xa0/0xa0 [ 1063.388172] ? integrity_iint_find+0x129/0x160 [ 1063.392758] process_measurement+0xeca/0x1560 [ 1063.397264] ? ima_add_template_entry.cold+0x48/0x48 [ 1063.402381] ? lockdep_hardirqs_on+0x415/0x5d0 [ 1063.406975] ? retint_kernel+0x2d/0x2d [ 1063.410861] ? trace_hardirqs_on_caller+0x6a/0x220 [ 1063.415835] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1063.420642] ? selinux_task_getsecid+0x16f/0x2d0 [ 1063.425402] ? find_held_lock+0x35/0x130 [ 1063.429464] ? selinux_task_getsecid+0x16f/0x2d0 [ 1063.434228] ? lock_downgrade+0x880/0x880 [ 1063.438377] ? kasan_check_read+0x11/0x20 [ 1063.442529] ? selinux_task_getsecid+0x196/0x2d0 [ 1063.447383] ima_file_check+0xc5/0x110 [ 1063.451528] ? process_measurement+0x1560/0x1560 [ 1063.456340] path_openat+0x1130/0x45e0 [ 1063.460227] ? __lock_acquire+0x6ee/0x49c0 [ 1063.464459] ? getname+0x1a/0x20 [ 1063.467829] ? do_sys_open+0x2c9/0x550 [ 1063.471755] ? path_lookupat.isra.0+0x8d0/0x8d0 [ 1063.476428] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1063.481203] ? __alloc_fd+0x44d/0x560 [ 1063.485008] do_filp_open+0x1a1/0x280 [ 1063.488814] ? may_open_dev+0x100/0x100 [ 1063.492809] ? kasan_check_read+0x11/0x20 [ 1063.496958] ? do_raw_spin_unlock+0x57/0x270 [ 1063.503712] ? _raw_spin_unlock+0x2d/0x50 [ 1063.507858] ? __alloc_fd+0x44d/0x560 [ 1063.511682] do_sys_open+0x3fe/0x550 [ 1063.515438] ? filp_open+0x80/0x80 [ 1063.518999] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 1063.523759] ? do_syscall_64+0x26/0x620 [ 1063.527742] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1063.533106] ? do_syscall_64+0x26/0x620 [ 1063.538747] __x64_sys_open+0x7e/0xc0 [ 1063.542555] do_syscall_64+0xfd/0x620 [ 1063.546359] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1063.551546] RIP: 0033:0x4478d9 [ 1063.554749] Code: e8 8c e7 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 fb 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1063.573646] RSP: 002b:00007f596a372ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1063.581355] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 00000000004478d9 [ 1063.588623] RDX: 0000000000000000 RSI: 0000000000141042 RDI: 0000000020000100 [ 1063.595904] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 1063.603170] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc2c [ 1063.610456] R13: 00007ffd3f94f80f R14: 00007f596a3739c0 R15: 00000000006dcc2c [ 1063.617766] rcu: rcu_preempt kthread starved for 10502 jiffies! g5309 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 1063.628155] rcu: RCU grace-period kthread stack dump: [ 1063.633337] rcu_preempt R running task 29424 10 2 0x80000000 [ 1063.640535] Call Trace: [ 1063.643128] __schedule+0x866/0x1dc0 [ 1063.646855] ? pci_mmcfg_check_reserved+0x170/0x170 [ 1063.651872] ? _raw_spin_unlock_irqrestore+0x6b/0xe0 [ 1063.656981] ? lockdep_hardirqs_on+0x415/0x5d0 [ 1063.661562] ? trace_hardirqs_on+0x67/0x220 [ 1063.665902] schedule+0x92/0x1c0 [ 1063.669269] schedule_timeout+0x4db/0xfc0 [ 1063.673417] ? usleep_range+0x170/0x170 [ 1063.677413] ? trace_hardirqs_on+0x67/0x220 [ 1063.681740] ? kasan_check_read+0x11/0x20 [ 1063.685898] ? __next_timer_interrupt+0x1a0/0x1a0 [ 1063.690747] ? prepare_to_swait_exclusive+0x120/0x120 [ 1063.695944] rcu_gp_kthread+0xd5c/0x2190 [ 1063.700147] ? rcu_blocking_is_gp+0x90/0x90 [ 1063.704494] ? trace_hardirqs_on+0x67/0x220 [ 1063.708826] ? kasan_check_read+0x11/0x20 [ 1063.712979] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 1063.718085] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 1063.723675] ? __kthread_parkme+0xfb/0x1b0 [ 1063.727916] kthread+0x354/0x420 [ 1063.731283] ? rcu_blocking_is_gp+0x90/0x90 [ 1063.735602] ? kthread_cancel_delayed_work_sync+0x20/0x20 [ 1063.741143] ret_from_fork+0x24/0x30