Warning: Permanently added '10.128.15.206' (ECDSA) to the list of known hosts. executing program executing program [ 477.727445][ T6827] block nbd0: shutting down sockets [ 508.234349][ T2456] block nbd0: Possible stuck request 00000000d5c76108: control (read@0,4096B). Runtime 30 seconds [ 538.310891][ T2456] block nbd0: Possible stuck request 00000000d5c76108: control (read@0,4096B). Runtime 60 seconds [ 568.387898][ T2456] block nbd0: Possible stuck request 00000000d5c76108: control (read@0,4096B). Runtime 90 seconds [ 598.465127][ T2456] block nbd0: Possible stuck request 00000000d5c76108: control (read@0,4096B). Runtime 120 seconds [ 628.542740][ T2456] block nbd0: Possible stuck request 00000000d5c76108: control (read@0,4096B). Runtime 150 seconds [ 636.862156][ T1172] INFO: task syz-executor453:6836 blocked for more than 143 seconds. [ 636.870409][ T1172] Not tainted 5.9.0-rc3-syzkaller #0 [ 636.878217][ T1172] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 636.887428][ T1172] task:syz-executor453 state:D stack:27632 pid: 6836 ppid: 6825 flags:0x00004004 [ 636.897196][ T1172] Call Trace: [ 636.900618][ T1172] __schedule+0xea9/0x2230 [ 636.905764][ T1172] ? io_schedule_timeout+0x140/0x140 [ 636.911119][ T1172] ? mark_held_locks+0x9f/0xe0 [ 636.916755][ T1172] ? wait_on_page_bit_common+0x52c/0xca0 [ 636.922895][ T1172] schedule+0xd0/0x2a0 [ 636.926957][ T1172] io_schedule+0xb5/0x120 [ 636.931265][ T1172] wait_on_page_bit_common+0x52c/0xca0 [ 636.937691][ T1172] ? replace_page_cache_page+0x1620/0x1620 [ 636.943953][ T1172] ? filemap_fdatawait_keep_errors+0xe0/0xe0 [ 636.949922][ T1172] ? pagecache_get_page+0x22b/0xf70 [ 636.955827][ T1172] do_read_cache_page+0x257/0x1390 [ 636.961041][ T1172] read_part_sector+0xf6/0x5af [ 636.966564][ T1172] ? adfspart_check_ADFS+0x7f0/0x7f0 [ 636.971842][ T1172] adfspart_check_ICS+0x9d/0xc90 [ 636.977551][ T1172] ? pointer+0x970/0x970 [ 636.981845][ T1172] ? rcu_read_lock_sched_held+0x3a/0xb0 [ 636.988133][ T1172] ? adfspart_check_ADFS+0x7f0/0x7f0 [ 636.993893][ T1172] ? snprintf+0xbb/0xf0 [ 636.998038][ T1172] ? vsprintf+0x30/0x30 [ 637.003449][ T1172] ? adfspart_check_ADFS+0x7f0/0x7f0 [ 637.008826][ T1172] blk_add_partitions+0x44b/0xe10 [ 637.015270][ T1172] bdev_disk_changed+0x1ea/0x370 [ 637.020205][ T1172] __blkdev_get+0xee4/0x1aa0 [ 637.025486][ T1172] ? freeze_bdev+0x250/0x250 [ 637.030129][ T1172] ? do_raw_spin_unlock+0x171/0x230 [ 637.036057][ T1172] blkdev_open+0x227/0x300 [ 637.040546][ T1172] do_dentry_open+0x4b9/0x11b0 [ 637.046010][ T1172] ? blkdev_get_by_path+0x100/0x100 [ 637.051248][ T1172] path_openat+0x1b9a/0x2730 [ 637.056526][ T1172] ? path_lookupat+0x830/0x830 [ 637.061282][ T1172] ? lock_is_held_type+0xbb/0xf0 [ 637.066908][ T1172] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 637.073304][ T1172] ? lock_is_held_type+0xbb/0xf0 [ 637.078233][ T1172] do_filp_open+0x17e/0x3c0 [ 637.083412][ T1172] ? may_open_dev+0xf0/0xf0 [ 637.087917][ T1172] ? do_raw_spin_lock+0x120/0x2b0 [ 637.093664][ T1172] ? rwlock_bug.part.0+0x90/0x90 [ 637.098597][ T1172] ? _raw_spin_unlock+0x24/0x40 [ 637.104801][ T1172] ? __alloc_fd+0x28d/0x600 [ 637.109298][ T1172] do_sys_openat2+0x16d/0x420 [ 637.114680][ T1172] ? build_open_flags+0x650/0x650 [ 637.119704][ T1172] __x64_sys_open+0x119/0x1c0 [ 637.125057][ T1172] ? do_sys_open+0x140/0x140 [ 637.129641][ T1172] ? check_preemption_disabled+0x50/0x130 [ 637.136705][ T1172] ? syscall_enter_from_user_mode+0x20/0x290 [ 637.143204][ T1172] ? lockdep_hardirqs_on+0x53/0x100 [ 637.148407][ T1172] do_syscall_64+0x2d/0x70 [ 637.153492][ T1172] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 637.159371][ T1172] RIP: 0033:0x4057a1 [ 637.163974][ T1172] Code: Bad RIP value. [ 637.168042][ T1172] RSP: 002b:00007fc7fd2ee980 EFLAGS: 00000293 ORIG_RAX: 0000000000000002 [ 637.177134][ T1172] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004057a1 [ 637.185686][ T1172] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fc7fd2ee990 [ 637.194083][ T1172] RBP: 6666666666666667 R08: 000000000000000f R09: 00007fc7fd2ef700 [ 637.202577][ T1172] R10: 00007fc7fd2ef9d0 R11: 0000000000000293 R12: 00000000006dbc2c [ 637.210553][ T1172] R13: 00007ffe05d2c11f R14: 00007fc7fd2ef9c0 R15: 20c49ba5e353f7cf [ 637.219274][ T1172] [ 637.219274][ T1172] Showing all locks held in the system: [ 637.227545][ T1172] 1 lock held by khungtaskd/1172: [ 637.233009][ T1172] #0: ffffffff89bd6a40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 637.243999][ T1172] 1 lock held by in:imklog/6627: [ 637.248934][ T1172] #0: ffff8880a1db7670 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 637.258714][ T1172] 1 lock held by syz-executor453/6836: [ 637.265214][ T1172] #0: ffff88808aad0340 (&bdev->bd_mutex){+.+.}-{3:3}, at: __blkdev_get+0x4b8/0x1aa0 [ 637.275128][ T1172] [ 637.277451][ T1172] ============================================= [ 637.277451][ T1172] [ 637.287073][ T1172] NMI backtrace for cpu 1 [ 637.291395][ T1172] CPU: 1 PID: 1172 Comm: khungtaskd Not tainted 5.9.0-rc3-syzkaller #0 [ 637.299611][ T1172] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.309902][ T1172] Call Trace: [ 637.313230][ T1172] dump_stack+0x198/0x1fd [ 637.317539][ T1172] nmi_cpu_backtrace.cold+0x70/0xb1 [ 637.322770][ T1172] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 637.328408][ T1172] nmi_trigger_cpumask_backtrace+0x1b3/0x223 [ 637.334425][ T1172] watchdog+0xd7d/0x1000 [ 637.338661][ T1172] ? reset_hung_task_detector+0x30/0x30 [ 637.344223][ T1172] kthread+0x3b5/0x4a0 [ 637.348288][ T1172] ? __kthread_bind_mask+0xc0/0xc0 [ 637.353460][ T1172] ret_from_fork+0x1f/0x30 [ 637.358175][ T1172] Sending NMI from CPU 1 to CPUs 0: [ 637.363836][ C0] NMI backtrace for cpu 0 [ 637.363842][ C0] CPU: 0 PID: 3900 Comm: systemd-journal Not tainted 5.9.0-rc3-syzkaller #0 [ 637.363849][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.363853][ C0] RIP: 0010:___cache_free+0x3e5/0x730 [ 637.363865][ C0] Code: c7 48 b8 00 00 00 00 00 ea ff ff 48 c1 e7 06 48 01 c7 48 8b 17 48 83 fa ff 0f 84 ef 01 00 00 48 c1 ea 3a 65 8b 05 fb 42 4f 7e <39> c2 0f 84 91 fe ff ff 4c 8d 6c 24 18 48 98 4c 89 64 24 10 48 63 [ 637.363870][ C0] RSP: 0018:ffffc900055f7cf8 EFLAGS: 00000046 [ 637.363877][ C0] RAX: 0000000000000000 RBX: ffff8880ae63fba8 RCX: ffffffff8134b990 [ 637.363883][ C0] RDX: 0000000000000000 RSI: ffffffff8134b99a RDI: ffffea00024b9280 [ 637.363888][ C0] RBP: ffff8880aa040900 R08: 0000000000000001 R09: 0000000000000001 [ 637.363893][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888092e4a000 [ 637.363899][ C0] R13: ffffea00024b9280 R14: 0000000000000200 R15: dffffc0000000000 [ 637.363904][ C0] FS: 00007f7e855108c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 637.363909][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 637.363920][ C0] CR2: 00007f7e828b2020 CR3: 00000000932cd000 CR4: 00000000001506f0 [ 637.363925][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 637.363930][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 637.363933][ C0] Call Trace: [ 637.363937][ C0] ? lockdep_hardirqs_off+0x96/0xd0 [ 637.363940][ C0] qlist_free_all+0x98/0x170 [ 637.363944][ C0] quarantine_reduce+0x17e/0x200 [ 637.363947][ C0] __kasan_kmalloc.constprop.0+0x9e/0xd0 [ 637.363951][ C0] ? kmem_cache_alloc+0x269/0x3a0 [ 637.363954][ C0] kmem_cache_alloc+0x13a/0x3a0 [ 637.363958][ C0] prepare_creds+0x39/0x6c0 [ 637.363961][ C0] do_faccessat+0x3d7/0x820 [ 637.363964][ C0] ? stream_open+0x60/0x60 [ 637.363968][ C0] ? __secure_computing+0x104/0x360 [ 637.363971][ C0] do_syscall_64+0x2d/0x70 [ 637.363976][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 637.363979][ C0] RIP: 0033:0x7f7e847cc9c7 [ 637.363991][ C0] Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 [ 637.363995][ C0] RSP: 002b:00007ffd455eb1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 637.364004][ C0] RAX: ffffffffffffffda RBX: 00007ffd455ee0d0 RCX: 00007f7e847cc9c7 [ 637.364009][ C0] RDX: 00007f7e8523da00 RSI: 0000000000000000 RDI: 0000557d3179b9a3 [ 637.364015][ C0] RBP: 00007ffd455eb1f0 R08: 0000000000000000 R09: 0000000000000000 [ 637.364020][ C0] R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 [ 637.364025][ C0] R13: 0000000000000000 R14: 00007ffd455ee0d0 R15: 00007ffd455eb6e0 [ 637.364440][ T1172] Kernel panic - not syncing: hung_task: blocked tasks [ 637.638932][ T1172] CPU: 1 PID: 1172 Comm: khungtaskd Not tainted 5.9.0-rc3-syzkaller #0 [ 637.647156][ T1172] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 637.657209][ T1172] Call Trace: [ 637.660517][ T1172] dump_stack+0x198/0x1fd [ 637.664929][ T1172] panic+0x347/0x7c0 [ 637.668802][ T1172] ? __warn_printk+0xf3/0xf3 [ 637.673373][ T1172] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 637.678993][ T1172] ? preempt_schedule_thunk+0x16/0x18 [ 637.684360][ T1172] ? watchdog.cold+0x5/0x16b [ 637.688944][ T1172] ? watchdog+0xa82/0x1000 [ 637.693337][ T1172] watchdog.cold+0x16/0x16b [ 637.697832][ T1172] ? reset_hung_task_detector+0x30/0x30 [ 637.703367][ T1172] kthread+0x3b5/0x4a0 [ 637.707425][ T1172] ? __kthread_bind_mask+0xc0/0xc0 [ 637.712513][ T1172] ret_from_fork+0x1f/0x30 [ 637.718450][ T1172] Kernel Offset: disabled [ 637.722796][ T1172] Rebooting in 86400 seconds..