[[0;32m OK [0m] Reached target Graphical Interface.
Starting Update UTMP about System Runlevel Changes...
[[0;32m OK [0m] Started Update UTMP about System Runlevel Changes.
Starting Load/Save RF Kill Switch Status...
[[0;32m OK [0m] Started Load/Save RF Kill Switch Status.
Debian GNU/Linux 9 syzkaller ttyS0
Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts.
executing program
executing program
syzkaller login: [ 449.493781][ T6878] block nbd0: shutting down sockets
[ 479.942040][ T2454] block nbd0: Possible stuck request 000000006e3839c0: control (read@0,4096B). Runtime 30 seconds
[ 510.022040][ T2454] block nbd0: Possible stuck request 000000006e3839c0: control (read@0,4096B). Runtime 60 seconds
[ 540.102146][ T2454] block nbd0: Possible stuck request 000000006e3839c0: control (read@0,4096B). Runtime 90 seconds
[ 570.182025][ T2454] block nbd0: Possible stuck request 000000006e3839c0: control (read@0,4096B). Runtime 120 seconds
[ 595.782173][ T1149] INFO: task syz-executor264:6887 can't die for more than 143 seconds.
[ 595.790662][ T1149] task:syz-executor264 state:D stack:27392 pid: 6887 ppid: 6876 flags:0x00004004
[ 595.800742][ T1149] Call Trace:
[ 595.804283][ T1149] __schedule+0xea9/0x2230
[ 595.808722][ T1149] ? io_schedule_timeout+0x140/0x140
[ 595.814193][ T1149] ? mark_held_locks+0x9f/0xe0
[ 595.819037][ T1149] ? wait_on_page_bit_common+0x52c/0xca0
[ 595.824896][ T1149] schedule+0xd0/0x2a0
[ 595.828970][ T1149] io_schedule+0xb5/0x120
[ 595.833361][ T1149] wait_on_page_bit_common+0x52c/0xca0
[ 595.838848][ T1149] ? replace_page_cache_page+0x1620/0x1620
[ 595.844729][ T1149] ? filemap_fdatawait_keep_errors+0xe0/0xe0
[ 595.850724][ T1149] ? pagecache_get_page+0x22b/0xf70
[ 595.855992][ T1149] do_read_cache_page+0x257/0x1390
[ 595.861202][ T1149] read_part_sector+0xf6/0x5af
[ 595.866031][ T1149] ? adfspart_check_ADFS+0x7f0/0x7f0
[ 595.871324][ T1149] adfspart_check_ICS+0x9d/0xc90
[ 595.876424][ T1149] ? pointer+0x970/0x970
[ 595.880721][ T1149] ? rcu_read_lock_sched_held+0x3a/0xb0
[ 595.886325][ T1149] ? adfspart_check_ADFS+0x7f0/0x7f0
[ 595.891661][ T1149] ? snprintf+0xbb/0xf0
[ 595.895897][ T1149] ? vsprintf+0x30/0x30
[ 595.900100][ T1149] ? adfspart_check_ADFS+0x7f0/0x7f0
[ 595.905470][ T1149] blk_add_partitions+0x445/0xe00
[ 595.910585][ T1149] bdev_disk_changed+0x208/0x390
[ 595.915614][ T1149] __blkdev_get+0xee4/0x1870
[ 595.920217][ T1149] ? lock_downgrade+0x830/0x830
[ 595.925116][ T1149] ? freeze_bdev+0x250/0x250
[ 595.929819][ T1149] ? devcgroup_check_permission+0x1a8/0x420
[ 595.935779][ T1149] blkdev_get+0xd1/0x240
[ 595.940038][ T1149] blkdev_open+0x21d/0x2b0
[ 595.944579][ T1149] do_dentry_open+0x4b9/0x11b0
[ 595.949358][ T1149] ? blkdev_get_by_dev+0x70/0x70
[ 595.954472][ T1149] path_openat+0x1b9a/0x2730
[ 595.959088][ T1149] ? path_lookupat+0x830/0x830
[ 595.963907][ T1149] ? lockdep_hardirqs_on_prepare+0x530/0x530
[ 595.969898][ T1149] ? lock_is_held_type+0xbb/0xf0
[ 595.974889][ T1149] do_filp_open+0x17e/0x3c0
[ 595.979399][ T1149] ? may_open_dev+0xf0/0xf0
[ 595.983968][ T1149] ? do_raw_spin_lock+0x120/0x2b0
[ 595.989004][ T1149] ? rwlock_bug.part.0+0x90/0x90
[ 595.994035][ T1149] ? _raw_spin_unlock+0x24/0x40
[ 595.998934][ T1149] ? __alloc_fd+0x28d/0x600
[ 596.003530][ T1149] do_sys_openat2+0x16d/0x420
[ 596.008228][ T1149] ? build_open_flags+0x650/0x650
[ 596.013319][ T1149] __x64_sys_open+0x119/0x1c0
[ 596.018011][ T1149] ? do_sys_open+0x140/0x140
[ 596.022669][ T1149] ? check_preemption_disabled+0x50/0x130
[ 596.028411][ T1149] ? syscall_enter_from_user_mode+0x20/0x290
[ 596.034621][ T1149] ? lockdep_hardirqs_on+0x53/0x100
[ 596.039900][ T1149] do_syscall_64+0x2d/0x70
[ 596.044382][ T1149] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 596.050283][ T1149] RIP: 0033:0x4057a1
[ 596.054239][ T1149] Code: Bad RIP value.
[ 596.058301][ T1149] RSP: 002b:00007f8e5f71f980 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
[ 596.066781][ T1149] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004057a1
[ 596.074838][ T1149] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f8e5f71f990
[ 596.082884][ T1149] RBP: 6666666666666667 R08: 000000000000000f R09: 00007f8e5f720700
[ 596.090855][ T1149] R10: 00007f8e5f7209d0 R11: 0000000000000293 R12: 00000000006dbc2c
[ 596.098868][ T1149] R13: 00007fff7140521f R14: 00007f8e5f7209c0 R15: 20c49ba5e353f7cf
[ 596.106946][ T1149] INFO: task syz-executor264:6887 blocked for more than 143 seconds.
[ 596.115066][ T1149] Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.122140][ T1149] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 596.130811][ T1149] task:syz-executor264 state:D stack:27392 pid: 6887 ppid: 6876 flags:0x00004004
[ 596.140072][ T1149] Call Trace:
[ 596.143448][ T1149] __schedule+0xea9/0x2230
[ 596.147875][ T1149] ? io_schedule_timeout+0x140/0x140
[ 596.153213][ T1149] ? mark_held_locks+0x9f/0xe0
[ 596.157994][ T1149] ? wait_on_page_bit_common+0x52c/0xca0
[ 596.163672][ T1149] schedule+0xd0/0x2a0
[ 596.167768][ T1149] io_schedule+0xb5/0x120
[ 596.172165][ T1149] wait_on_page_bit_common+0x52c/0xca0
[ 596.177637][ T1149] ? replace_page_cache_page+0x1620/0x1620
[ 596.183590][ T1149] ? filemap_fdatawait_keep_errors+0xe0/0xe0
[ 596.189700][ T1149] ? pagecache_get_page+0x22b/0xf70
[ 596.194979][ T1149] do_read_cache_page+0x257/0x1390
[ 596.200119][ T1149] read_part_sector+0xf6/0x5af
[ 596.204971][ T1149] ? adfspart_check_ADFS+0x7f0/0x7f0
[ 596.210275][ T1149] adfspart_check_ICS+0x9d/0xc90
[ 596.215280][ T1149] ? pointer+0x970/0x970
[ 596.219527][ T1149] ? rcu_read_lock_sched_held+0x3a/0xb0
[ 596.225159][ T1149] ? adfspart_check_ADFS+0x7f0/0x7f0
[ 596.230457][ T1149] ? snprintf+0xbb/0xf0
[ 596.234681][ T1149] ? vsprintf+0x30/0x30
[ 596.238844][ T1149] ? adfspart_check_ADFS+0x7f0/0x7f0
[ 596.244370][ T1149] blk_add_partitions+0x445/0xe00
[ 596.249414][ T1149] bdev_disk_changed+0x208/0x390
[ 596.254436][ T1149] __blkdev_get+0xee4/0x1870
[ 596.259045][ T1149] ? lock_downgrade+0x830/0x830
[ 596.263958][ T1149] ? freeze_bdev+0x250/0x250
[ 596.268558][ T1149] ? devcgroup_check_permission+0x1a8/0x420
[ 596.274527][ T1149] blkdev_get+0xd1/0x240
[ 596.278826][ T1149] blkdev_open+0x21d/0x2b0
[ 596.283303][ T1149] do_dentry_open+0x4b9/0x11b0
[ 596.288077][ T1149] ? blkdev_get_by_dev+0x70/0x70
[ 596.293078][ T1149] path_openat+0x1b9a/0x2730
[ 596.297788][ T1149] ? path_lookupat+0x830/0x830
[ 596.302625][ T1149] ? lockdep_hardirqs_on_prepare+0x530/0x530
[ 596.308615][ T1149] ? lock_is_held_type+0xbb/0xf0
[ 596.313650][ T1149] do_filp_open+0x17e/0x3c0
[ 596.318164][ T1149] ? may_open_dev+0xf0/0xf0
[ 596.322738][ T1149] ? do_raw_spin_lock+0x120/0x2b0
[ 596.327765][ T1149] ? rwlock_bug.part.0+0x90/0x90
[ 596.332762][ T1149] ? _raw_spin_unlock+0x24/0x40
[ 596.337624][ T1149] ? __alloc_fd+0x28d/0x600
[ 596.342201][ T1149] do_sys_openat2+0x16d/0x420
[ 596.346901][ T1149] ? build_open_flags+0x650/0x650
[ 596.352034][ T1149] __x64_sys_open+0x119/0x1c0
[ 596.356732][ T1149] ? do_sys_open+0x140/0x140
[ 596.361322][ T1149] ? check_preemption_disabled+0x50/0x130
[ 596.367111][ T1149] ? syscall_enter_from_user_mode+0x20/0x290
[ 596.373172][ T1149] ? lockdep_hardirqs_on+0x53/0x100
[ 596.378374][ T1149] do_syscall_64+0x2d/0x70
[ 596.382838][ T1149] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 596.388748][ T1149] RIP: 0033:0x4057a1
[ 596.392680][ T1149] Code: Bad RIP value.
[ 596.396755][ T1149] RSP: 002b:00007f8e5f71f980 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
[ 596.405242][ T1149] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004057a1
[ 596.413283][ T1149] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007f8e5f71f990
[ 596.421280][ T1149] RBP: 6666666666666667 R08: 000000000000000f R09: 00007f8e5f720700
[ 596.429311][ T1149] R10: 00007f8e5f7209d0 R11: 0000000000000293 R12: 00000000006dbc2c
[ 596.437353][ T1149] R13: 00007fff7140521f R14: 00007f8e5f7209c0 R15: 20c49ba5e353f7cf
[ 596.445414][ T1149]
[ 596.445414][ T1149] Showing all locks held in the system:
[ 596.453341][ T1149] 1 lock held by khungtaskd/1149:
[ 596.458339][ T1149] #0: ffffffff89c67500 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[ 596.468277][ T1149] 1 lock held by syz-executor264/6887:
[ 596.473804][ T1149] #0: ffff88808a7748c0 (&bdev->bd_mutex){+.+.}-{3:3}, at: __blkdev_get+0x457/0x1870
[ 596.483371][ T1149]
[ 596.485705][ T1149] =============================================
[ 596.485705][ T1149]
[ 596.494151][ T1149] NMI backtrace for cpu 0
[ 596.498477][ T1149] CPU: 0 PID: 1149 Comm: khungtaskd Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.507904][ T1149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 596.517947][ T1149] Call Trace:
[ 596.521221][ T1149] dump_stack+0x198/0x1fd
[ 596.525542][ T1149] nmi_cpu_backtrace.cold+0x44/0xd7
[ 596.530806][ T1149] ? lapic_can_unplug_cpu.cold+0x38/0x38
[ 596.536447][ T1149] nmi_trigger_cpumask_backtrace+0x1b3/0x223
[ 596.542526][ T1149] watchdog+0xd89/0xf30
[ 596.546678][ T1149] ? trace_sched_process_hang+0x2e0/0x2e0
[ 596.552416][ T1149] kthread+0x3b5/0x4a0
[ 596.556472][ T1149] ? __kthread_bind_mask+0xc0/0xc0
[ 596.561605][ T1149] ret_from_fork+0x1f/0x30
[ 596.566149][ T1149] Sending NMI from CPU 0 to CPUs 1:
[ 596.571944][ C1] NMI backtrace for cpu 1
[ 596.571953][ C1] CPU: 1 PID: 3900 Comm: systemd-journal Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.571960][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 596.571965][ C1] RIP: 0010:qlist_free_all+0xb4/0x170
[ 596.571976][ C1] Code: 48 c1 e8 03 42 c6 04 38 fb e8 18 7f ff ff 4d 85 f6 0f 85 85 00 00 00 48 83 3d af df 00 08 00 0f 84 8a 00 00 00 48 89 df 57 9d <0f> 1f 44 00 00 4d 85 e4 74 7d 48 85 ed 4c 89 e6 48 89 ef 0f 85 69
[ 596.571980][ C1] RSP: 0018:ffffc90001627c60 EFLAGS: 00000286
[ 596.571990][ C1] RAX: 00000000000b80e3 RBX: 0000000000000286 RCX: 1ffffffff1578f39
[ 596.571996][ C1] RDX: ffff888093be6340 RSI: 0000000000000000 RDI: 0000000000000286
[ 596.572002][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
[ 596.572008][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888094050b60
[ 596.572013][ C1] R13: ffffc90001627ca8 R14: 0000000000000200 R15: dffffc0000000000
[ 596.572020][ C1] FS: 00007f7c5d5898c0(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[ 596.572025][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 596.572031][ C1] CR2: 00007f7c5a934000 CR3: 0000000093409000 CR4: 00000000001506e0
[ 596.572036][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 596.572042][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 596.572046][ C1] Call Trace:
[ 596.572050][ C1] quarantine_reduce+0x17e/0x200
[ 596.572054][ C1] __kasan_kmalloc.constprop.0+0x9e/0xd0
[ 596.572059][ C1] ? kmem_cache_alloc+0x269/0x3a0
[ 596.572063][ C1] kmem_cache_alloc+0x13a/0x3a0
[ 596.572067][ C1] getname_flags.part.0+0x50/0x4f0
[ 596.572072][ C1] ? __sanitizer_cov_trace_switch+0x45/0x70
[ 596.572076][ C1] getname+0x8e/0xd0
[ 596.572080][ C1] do_sys_openat2+0xf5/0x420
[ 596.572084][ C1] ? seccomp_notify_ioctl+0xd90/0xd90
[ 596.572088][ C1] ? strncpy_from_user+0x2bf/0x3e0
[ 596.572093][ C1] ? build_open_flags+0x650/0x650
[ 596.572097][ C1] ? getname_flags.part.0+0x1dd/0x4f0
[ 596.572101][ C1] __x64_sys_open+0x119/0x1c0
[ 596.572105][ C1] ? do_sys_open+0x140/0x140
[ 596.572110][ C1] ? __secure_computing+0x104/0x360
[ 596.572114][ C1] do_syscall_64+0x2d/0x70
[ 596.572118][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 596.572122][ C1] RIP: 0033:0x7f7c5cb19840
[ 596.572134][ C1] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24
[ 596.572138][ C1] RSP: 002b:00007ffcfb22ca08 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[ 596.572148][ C1] RAX: ffffffffffffffda RBX: 00007ffcfb22cd10 RCX: 00007f7c5cb19840
[ 596.572153][ C1] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055dc4a8d1260
[ 596.572159][ C1] RBP: 000000000000000d R08: 00000000000001c0 R09: 00000000ffffffff
[ 596.572165][ C1] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
[ 596.572170][ C1] R13: 000055dc4a8c5040 R14: 00007ffcfb22ccd0 R15: 000055dc4a8d0fe0
[ 596.572445][ T1149] Kernel panic - not syncing: hung_task: blocked tasks
[ 596.874277][ T1149] CPU: 0 PID: 1149 Comm: khungtaskd Not tainted 5.9.0-rc3-next-20200903-syzkaller #0
[ 596.883704][ T1149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 596.893734][ T1149] Call Trace:
[ 596.897015][ T1149] dump_stack+0x198/0x1fd
[ 596.901415][ T1149] panic+0x347/0x7c0
[ 596.905320][ T1149] ? __warn_printk+0xf3/0xf3
[ 596.909901][ T1149] ? lapic_can_unplug_cpu.cold+0x38/0x38
[ 596.915531][ T1149] ? preempt_schedule_thunk+0x16/0x18
[ 596.920890][ T1149] ? watchdog.cold+0x22d/0x24b
[ 596.925631][ T1149] ? watchdog+0xc59/0xf30
[ 596.929949][ T1149] watchdog.cold+0x23e/0x24b
[ 596.934527][ T1149] ? trace_sched_process_hang+0x2e0/0x2e0
[ 596.940234][ T1149] kthread+0x3b5/0x4a0
[ 596.944281][ T1149] ? __kthread_bind_mask+0xc0/0xc0
[ 596.949371][ T1149] ret_from_fork+0x1f/0x30
[ 596.955132][ T1149] Kernel Offset: disabled
[ 596.959468][ T1149] Rebooting in 86400 seconds..