Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [ 498.750264][ T8424] loop0: detected capacity change from 0 to 16383
[ 498.760325][ T8424] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 498.778287][ T8424] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
executing program
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[ 498.845301][ T8431] loop0: detected capacity change from 0 to 16383
[ 498.852864][ T8431] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 498.878163][ T8431] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
executing program
[ 498.944932][ T8440] loop0: detected capacity change from 0 to 16383
[ 498.952806][ T8440] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 498.967522][ T8440] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
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executing program
[ 499.032013][ T8446] loop0: detected capacity change from 0 to 16383
[ 499.040679][ T8446] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 499.070414][ T8446] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
executing program
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executing program
[ 499.120747][ T8453] loop0: detected capacity change from 0 to 16383
[ 499.128257][ T8453] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 499.147633][ T8453] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
[ 499.219388][ T8462] loop0: detected capacity change from 0 to 16383
[ 499.228248][ T8462] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 499.247607][ T8462] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
[ 499.307487][ T8469] loop0: detected capacity change from 0 to 16383
[ 499.318669][ T8469] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 499.329171][ T8469] EXT4-fs warning (device loop0): ext4_multi_mount_protect:320: MMP interval 79690 higher than expected, please wait.
[ 499.329171][ T8469]
[ 504.293288][ T8469] EXT4-fs warning (device loop0): ext4_multi_mount_protect:324: MMP startup interrupted, failing mount
[ 504.293288][ T8469]
executing program
executing program
executing program
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executing program
[ 504.434189][ T8476] loop0: detected capacity change from 0 to 16383
[ 504.442253][ T8476] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 504.457628][ T8476] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
executing program
[ 504.555946][ T8484] loop0: detected capacity change from 0 to 16383
[ 504.564060][ T8484] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 504.577611][ T8484] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
executing program
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[ 504.639332][ T8491] loop0: detected capacity change from 0 to 16383
[ 504.648068][ T8491] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 504.667571][ T8491] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
[ 504.749210][ T8500] loop0: detected capacity change from 0 to 16383
[ 504.758275][ T8500] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 504.777904][ T8500] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
[ 504.846126][ T8508] loop0: detected capacity change from 0 to 16383
[ 504.859372][ T8508] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 504.870428][ T8508] EXT4-fs warning (device loop0): ext4_multi_mount_protect:320: MMP interval 79690 higher than expected, please wait.
[ 504.870428][ T8508]
[ 509.833261][ T8508] EXT4-fs warning (device loop0): ext4_multi_mount_protect:324: MMP startup interrupted, failing mount
[ 509.833261][ T8508]
executing program
[ 509.921553][ T8515] loop0: detected capacity change from 0 to 16383
[ 509.930362][ T8515] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 509.957237][ T8515] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
executing program
[ 510.042031][ T8521] loop0: detected capacity change from 0 to 16383
[ 510.049886][ T8521] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 510.067629][ T8521] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
[ 510.116176][ T8527] loop0: detected capacity change from 0 to 16383
[ 510.124146][ T8527] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 510.134252][ T8527] EXT4-fs warning (device loop0): ext4_multi_mount_protect:320: MMP interval 79690 higher than expected, please wait.
[ 510.134252][ T8527]
[ 515.105364][ T8527] EXT4-fs warning (device loop0): ext4_multi_mount_protect:324: MMP startup interrupted, failing mount
[ 515.105364][ T8527]
executing program
[ 515.242499][ T8535] loop0: detected capacity change from 0 to 16383
[ 515.250898][ T8535] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 515.277115][ T8535] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
[ 515.358645][ T8541] loop0: detected capacity change from 0 to 16383
[ 515.366207][ T8541] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 515.376271][ T8541] EXT4-fs warning (device loop0): ext4_multi_mount_protect:320: MMP interval 79690 higher than expected, please wait.
[ 515.376271][ T8541]
[ 520.345266][ T8541] EXT4-fs warning (device loop0): ext4_multi_mount_protect:324: MMP startup interrupted, failing mount
[ 520.345266][ T8541]
executing program
[ 520.471883][ T8548] loop0: detected capacity change from 0 to 16383
[ 520.480300][ T8548] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 520.507180][ T8548] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
executing program
[ 520.570581][ T8554] loop0: detected capacity change from 0 to 16383
[ 520.579614][ T8554] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 520.589718][ T8554] EXT4-fs warning (device loop0): ext4_multi_mount_protect:320: MMP interval 79690 higher than expected, please wait.
[ 520.589718][ T8554]
[ 525.554916][ T8554] EXT4-fs warning (device loop0): ext4_multi_mount_protect:324: MMP startup interrupted, failing mount
[ 525.554916][ T8554]
executing program
executing program
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[ 525.692197][ T8561] loop0: detected capacity change from 0 to 16383
[ 525.700306][ T8561] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 525.717808][ T8561] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
[ 525.778724][ T8567] loop0: detected capacity change from 0 to 16383
[ 525.786889][ T8567] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended
[ 525.808186][ T8567] EXT4-fs (loop0): can't mount with journal_checksum, fs mounted w/o journal
[ 715.687308][ T1636] INFO: task syz-executor768:8567 blocked for more than 143 seconds.
[ 715.696421][ T1636] Not tainted 5.13.0-rc5-syzkaller #0
[ 715.702912][ T1636] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 715.711652][ T1636] task:syz-executor768 state:D stack:27544 pid: 8567 ppid: 8423 flags:0x00004004
[ 715.720909][ T1636] Call Trace:
[ 715.724185][ T1636] __schedule+0x916/0x23e0
[ 715.728680][ T1636] ? io_schedule_timeout+0x140/0x140
[ 715.733975][ T1636] ? lock_chain_count+0x20/0x20
[ 715.738872][ T1636] schedule+0xcf/0x270
[ 715.743027][ T1636] schedule_timeout+0x1db/0x250
[ 715.748197][ T1636] ? usleep_range+0x170/0x170
[ 715.752977][ T1636] ? wait_for_completion+0x160/0x270
[ 715.759098][ T1636] ? mark_held_locks+0x9f/0xe0
[ 715.763936][ T1636] ? rwlock_bug.part.0+0x90/0x90
[ 715.769347][ T1636] ? _raw_spin_unlock_irq+0x1f/0x40
[ 715.774977][ T1636] wait_for_completion+0x168/0x270
[ 715.780903][ T1636] ? bit_wait_io_timeout+0x160/0x160
[ 715.786394][ T1636] kthread_stop+0x17a/0x720
[ 715.791121][ T1636] ext4_fill_super+0x87ac/0xdfa0
[ 715.796077][ T1636] ? ext4_calculate_overhead+0x13a0/0x13a0
[ 715.801923][ T1636] ? __sanitizer_cov_trace_cmp4+0x1c/0x70
[ 715.807951][ T1636] ? set_blocksize+0x1c1/0x3b0
[ 715.812711][ T1636] mount_bdev+0x34d/0x410
[ 715.817025][ T1636] ? ext4_calculate_overhead+0x13a0/0x13a0
[ 715.822946][ T1636] ? rcu_read_unlock+0xa0/0xa0
[ 715.828007][ T1636] legacy_get_tree+0x105/0x220
[ 715.832855][ T1636] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[ 715.839318][ T1636] vfs_get_tree+0x89/0x2f0
[ 715.843751][ T1636] path_mount+0x132a/0x1fa0
[ 715.848388][ T1636] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70
[ 715.854905][ T1636] ? strncpy_from_user+0x2a0/0x3e0
[ 715.860079][ T1636] ? finish_automount+0xad0/0xad0
[ 715.865365][ T1636] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[ 715.871650][ T1636] ? getname_flags.part.0+0x1dd/0x4f0
[ 715.877045][ T1636] __x64_sys_mount+0x27f/0x300
[ 715.881859][ T1636] ? copy_mnt_ns+0xae0/0xae0
[ 715.886466][ T1636] ? syscall_enter_from_user_mode+0x27/0x70
[ 715.893116][ T1636] do_syscall_64+0x3a/0xb0
[ 715.897835][ T1636] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 715.903733][ T1636] RIP: 0033:0x445b2a
[ 715.907832][ T1636] RSP: 002b:00007ffc5efbf598 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[ 715.916248][ T1636] RAX: ffffffffffffffda RBX: 00007ffc5efbf5f0 RCX: 0000000000445b2a
[ 715.924253][ T1636] RDX: 0000000020000000 RSI: 00000000200000c0 RDI: 00007ffc5efbf5b0
[ 715.932468][ T1636] RBP: 00007ffc5efbf5b0 R08: 00007ffc5efbf5f0 R09: 0000000000000000
[ 715.940587][ T1636] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000200003f8
[ 715.948641][ T1636] R13: 0000000000000003 R14: 0000000000000004 R15: 0000000000000005
[ 715.956701][ T1636]
[ 715.956701][ T1636] Showing all locks held in the system:
[ 715.964697][ T1636] 1 lock held by khungtaskd/1636:
[ 715.969813][ T1636] #0: ffffffff8bf79620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260
[ 715.979856][ T1636] 2 locks held by in:imklog/8117:
[ 715.984870][ T1636] #0: ffff888015be9770 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100
[ 715.994046][ T1636] #1: ffff888021bc3958 (&mm->mmap_lock#2){++++}-{3:3}, at: aa_file_perm+0x119/0x1170
[ 716.003703][ T1636] 1 lock held by syz-executor768/8567:
[ 716.009207][ T1636] #0: ffff88802ac340e0 (&type->s_umount_key#27/1){+.+.}-{3:3}, at: alloc_super+0x1dd/0xab0
[ 716.019941][ T1636]
[ 716.022262][ T1636] =============================================
[ 716.022262][ T1636]
[ 716.030956][ T1636] NMI backtrace for cpu 0
[ 716.035286][ T1636] CPU: 0 PID: 1636 Comm: khungtaskd Not tainted 5.13.0-rc5-syzkaller #0
[ 716.043606][ T1636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 716.053639][ T1636] Call Trace:
[ 716.056898][ T1636] dump_stack+0x141/0x1d7
[ 716.061210][ T1636] nmi_cpu_backtrace.cold+0x44/0xd7
[ 716.066390][ T1636] ? lapic_can_unplug_cpu+0x80/0x80
[ 716.071569][ T1636] nmi_trigger_cpumask_backtrace+0x1b3/0x230
[ 716.077546][ T1636] watchdog+0xd48/0xfb0
[ 716.081685][ T1636] ? reset_hung_task_detector+0x30/0x30
[ 716.087215][ T1636] kthread+0x3b1/0x4a0
[ 716.091281][ T1636] ? __kthread_bind_mask+0xc0/0xc0
[ 716.096388][ T1636] ret_from_fork+0x1f/0x30
[ 716.100925][ T1636] Sending NMI from CPU 0 to CPUs 1:
[ 716.106179][ C1] NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1c9/0x250
[ 716.115180][ T1636] Kernel panic - not syncing: hung_task: blocked tasks
[ 716.122281][ T1636] CPU: 0 PID: 1636 Comm: khungtaskd Not tainted 5.13.0-rc5-syzkaller #0
[ 716.130849][ T1636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 716.140992][ T1636] Call Trace:
[ 716.144251][ T1636] dump_stack+0x141/0x1d7
[ 716.148566][ T1636] panic+0x306/0x73d
[ 716.152723][ T1636] ? __warn_printk+0xf3/0xf3
[ 716.157402][ T1636] ? lapic_can_unplug_cpu+0x80/0x80
[ 716.162845][ T1636] ? preempt_schedule_thunk+0x16/0x18
[ 716.168311][ T1636] ? nmi_trigger_cpumask_backtrace+0x196/0x230
[ 716.174448][ T1636] ? watchdog.cold+0x5/0x158
[ 716.179105][ T1636] watchdog.cold+0x16/0x158
[ 716.183587][ T1636] ? reset_hung_task_detector+0x30/0x30
[ 716.189114][ T1636] kthread+0x3b1/0x4a0
[ 716.193160][ T1636] ? __kthread_bind_mask+0xc0/0xc0
[ 716.198255][ T1636] ret_from_fork+0x1f/0x30
[ 716.209908][ T1636] Kernel Offset: disabled
[ 716.214239][ T1636] Rebooting in 86400 seconds..