Extracting prog: 5m33.83717782s
Minimizing prog: 18m27.934116482s
Simplifying prog options: 0s
Extracting C: 3m12.604808991s
Simplifying C: 24m15.689420616s


extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
detailed listing:
executing program 0:
syz_mount_image$squashfs(&(0x7f0000000180), &(0x7f00000001c0)='./file0\x00', 0x800, &(0x7f0000001180)=ANY=[], 0x1, 0x17c, &(0x7f0000000380)="$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")
execveat(0xffffffffffffff9c, &(0x7f0000000280)='./file2\x00', 0x0, 0x0, 0x0)

program crashed: INFO: task hung in evict
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs
detailed listing:
executing program 0:
syz_mount_image$squashfs(&(0x7f0000000180), &(0x7f00000001c0)='./file0\x00', 0x800, &(0x7f0000001180)=ANY=[], 0x1, 0x17c, &(0x7f0000000380)="$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")

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): execveat
detailed listing:
executing program 0:
execveat(0xffffffffffffff9c, &(0x7f0000000280)='./file2\x00', 0x0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
detailed listing:
executing program 0:
syz_mount_image$squashfs(&(0x7f0000000180), &(0x7f00000001c0)='./file0\x00', 0x800, &(0x7f0000001180)=ANY=[], 0x1, 0x17c, &(0x7f0000000380)="$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")
execveat(0xffffffffffffff9c, 0x0, 0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: INFO: task hung in evict
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: INFO: task hung in evict
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: INFO: task hung in evict
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: INFO: task hung in evict
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: INFO: task hung in evict
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: INFO: task hung in evict
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
program crashed: INFO: task hung in evict
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
detailed listing:
executing program 0:
syz_mount_image$squashfs(&(0x7f0000000180), &(0x7f00000001c0)='./file0\x00', 0x800, &(0x7f0000001180)=ANY=[], 0x1, 0x17c, &(0x7f0000000380)="$eJzskr9OAkEQxr+9O/5oFDWxooGC+KdQjkONnZbY29lI4ETiocKRKITijDEUFsbSJ+A1THwBLYwPQE1BrM2ZvZ3bLL6C+yvu2/l2ZnZ2c+d+208B+JkOajhEhIkMPhiDBSDHhDcxhD6TfpI+CcE75R2Rf0+a9Xv9JAC+nceKMC6qnud28gC+I09a/sGdgUnU6ms6qPHFKYAwDEPu1QGejgUlxwTQVnKyFrAaXSKUORYNsA6g2G1dF/1ef6vZqjbchnvpmOU9e8e2d53iWdNzbfFlyhF0FXDdBJBKQ8L3EwAeKJ7HLEwZjfbZHE5kbTJ+www9IExZayi1sTK8yrlSSsUx1sDHugmWFLcQdbEQXakCBpOCkqXMJ85KRxvbtSuvPgQDi8tGsGSP0hgJGThqUN4PsChaDallgbRCOiIdk+b+/DJWwL+PFG0EQBK31W63U+KPJFYsXjnSc5YD9cH4qS/G7OXeDGg0Go1Go9FoNBrNf+c3AAD//8PfdhM=")
execveat(0xffffffffffffff9c, &(0x7f0000000280)='./file2\x00', 0x0, 0x0, 0x0)

program crashed: INFO: task hung in evict
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
detailed listing:
executing program 0:
syz_mount_image$squashfs(&(0x7f0000000180), &(0x7f00000001c0)='./file0\x00', 0x800, &(0x7f0000001180)=ANY=[], 0x1, 0x17c, &(0x7f0000000380)="$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")
execveat(0xffffffffffffff9c, &(0x7f0000000280)='./file2\x00', 0x0, 0x0, 0x0)

program crashed: INFO: task hung in evict
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$squashfs-execveat
detailed listing:
executing program 0:
syz_mount_image$squashfs(&(0x7f0000000180), &(0x7f00000001c0)='./file0\x00', 0x800, &(0x7f0000001180)=ANY=[], 0x1, 0x17c, &(0x7f0000000380)="$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")
execveat(0xffffffffffffff9c, &(0x7f0000000280)='./file2\x00', 0x0, 0x0, 0x0)

program crashed: INFO: task hung in evict
validation run: crashed=true
reproducing took 1h5m15.301523787s
repro crashed as (corrupted=false):
INFO: task syz-executor:5816 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21320 pid:5816  tgid:5816  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x1709/0x5530 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7326
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8154
 folio_wait_bit_common+0x83c/0xbc0 mm/filemap.c:1323
 __folio_lock mm/filemap.c:1704 [inline]
 folio_lock include/linux/pagemap.h:1157 [inline]
 __filemap_get_folio_mpol+0x16d/0xf50 mm/filemap.c:1960
 __filemap_get_folio include/linux/pagemap.h:761 [inline]
 truncate_inode_pages_range+0x470/0xd80 mm/truncate.c:413
 evict+0x638/0xb50 fs/inode.c:827
 dispose_list fs/inode.c:867 [inline]
 evict_inodes+0x7e3/0x870 fs/inode.c:921
 generic_shutdown_super+0xaa/0x2d0 fs/super.c:633
 kill_block_super+0x44/0x90 fs/super.c:1665
 deactivate_locked_super+0xbc/0x130 fs/super.c:477
 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66f569e097
RSP: 002b:00007ffcee00a7e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f66f57322ca RCX: 00007f66f569e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcee00a8a0
RBP: 00007ffcee00a8a0 R08: 00007ffcee00b8a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcee00b930
R13: 00007f66f57322ca R14: 000000000001eaa3 R15: 00007ffcee00b970
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/38:
 #0: ffffffff8dfc3040 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8dfc3040 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8dfc3040 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6777
3 locks held by kworker/u8:13/1489:
 #0: ffff8880310cf938 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work+0x8cd/0x12b0 kernel/workqueue.c:3301
 #1: ffffc9000611fc60 ((work_completion)(&(&bat_priv->dat.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8cd/0x12b0 kernel/workqueue.c:3301
 #2: ffffffff8de591a0 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
2 locks held by getty/5368:
 #0: ffff8880370650a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90003cbe2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5816:
 #0: ffff88803a11c0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88803a11c0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88803a11c0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/5978:
 #0: ffff88803c1d60d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88803c1d60d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88803c1d60d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6016:
 #0: ffff8880363d80d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880363d80d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff8880363d80d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6053:
 #0: ffff888025d480d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888025d480d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff888025d480d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6095:
 #0: ffff88804df420d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88804df420d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88804df420d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6138:
 #0: ffff88804120e0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88804120e0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88804120e0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6181:
 #0: ffff88805d54a0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88805d54a0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88805d54a0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6231:
 #0: ffff88805fa660d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88805fa660d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88805fa660d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122
 nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: db 5f 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 22 19 00 fb f4 <e9> cc cc 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8dc07de0 EFLAGS: 00000246
RAX: 00000000000d6355 RBX: ffffffff819957c0 RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8d6561b0 RDI: ffffffff8baa4a80
RBP: ffffffff8dc07eb8 R08: ffff8880b8633d5b R09: 1ffff110170c67ab
R10: dffffc0000000000 R11: ffffed10170c67ac R12: 0000000000000000
R13: 1ffffffff1b9ede8 R14: 1ffffffff1b80fc4 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125ed3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd05229fe0 CR3: 000000000ddb0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/kernel/process.c:767 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:768
 default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x2e0/0x540 kernel/sched/idle.c:355
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
 rest_init+0x2de/0x300 init/main.c:717
 start_kernel+0x392/0x3e0 init/main.c:1175
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x157
 </TASK>

final repro crashed as (corrupted=false):
INFO: task syz-executor:5816 blocked in I/O wait for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21320 pid:5816  tgid:5816  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x1709/0x5530 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x164/0x2b0 kernel/sched/core.c:7326
 io_schedule+0x7f/0xd0 kernel/sched/core.c:8154
 folio_wait_bit_common+0x83c/0xbc0 mm/filemap.c:1323
 __folio_lock mm/filemap.c:1704 [inline]
 folio_lock include/linux/pagemap.h:1157 [inline]
 __filemap_get_folio_mpol+0x16d/0xf50 mm/filemap.c:1960
 __filemap_get_folio include/linux/pagemap.h:761 [inline]
 truncate_inode_pages_range+0x470/0xd80 mm/truncate.c:413
 evict+0x638/0xb50 fs/inode.c:827
 dispose_list fs/inode.c:867 [inline]
 evict_inodes+0x7e3/0x870 fs/inode.c:921
 generic_shutdown_super+0xaa/0x2d0 fs/super.c:633
 kill_block_super+0x44/0x90 fs/super.c:1665
 deactivate_locked_super+0xbc/0x130 fs/super.c:477
 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66f569e097
RSP: 002b:00007ffcee00a7e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f66f57322ca RCX: 00007f66f569e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcee00a8a0
RBP: 00007ffcee00a8a0 R08: 00007ffcee00b8a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcee00b930
R13: 00007f66f57322ca R14: 000000000001eaa3 R15: 00007ffcee00b970
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/38:
 #0: ffffffff8dfc3040 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffffffff8dfc3040 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffffffff8dfc3040 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6777
3 locks held by kworker/u8:13/1489:
 #0: ffff8880310cf938 ((wq_completion)bat_events){+.+.}-{0:0}, at: process_one_work+0x8cd/0x12b0 kernel/workqueue.c:3301
 #1: ffffc9000611fc60 ((work_completion)(&(&bat_priv->dat.work)->work)){+.+.}-{0:0}, at: process_one_work+0x8cd/0x12b0 kernel/workqueue.c:3301
 #2: ffffffff8de591a0 (local_bh){.+.+}-{1:3}, at: __local_bh_disable_ip+0x3c/0x420 kernel/softirq.c:163
2 locks held by getty/5368:
 #0: ffff8880370650a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90003cbe2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x460/0x1360 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5816:
 #0: ffff88803a11c0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88803a11c0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88803a11c0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/5978:
 #0: ffff88803c1d60d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88803c1d60d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88803c1d60d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6016:
 #0: ffff8880363d80d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff8880363d80d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff8880363d80d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6053:
 #0: ffff888025d480d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff888025d480d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff888025d480d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6095:
 #0: ffff88804df420d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88804df420d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88804df420d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6138:
 #0: ffff88804120e0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88804120e0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88804120e0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6181:
 #0: ffff88805d54a0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88805d54a0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88805d54a0d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509
1 lock held by syz-executor/6231:
 #0: ffff88805fa660d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock fs/super.c:58 [inline]
 #0: ffff88805fa660d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: __super_lock_excl fs/super.c:73 [inline]
 #0: ffff88805fa660d0 (&type->s_umount_key#55){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:509

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122
 nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 __sys_info lib/sys_info.c:157 [inline]
 sys_info+0x135/0x170 lib/sys_info.c:165
 check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
 watchdog+0xfd7/0x1030 kernel/hung_task.c:561
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: db 5f 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 22 19 00 fb f4 <e9> cc cc 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffffff8dc07de0 EFLAGS: 00000246
RAX: 00000000000d6355 RBX: ffffffff819957c0 RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8d6561b0 RDI: ffffffff8baa4a80
RBP: ffffffff8dc07eb8 R08: ffff8880b8633d5b R09: 1ffff110170c67ab
R10: dffffc0000000000 R11: ffffed10170c67ac R12: 0000000000000000
R13: 1ffffffff1b9ede8 R14: 1ffffffff1b80fc4 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125ed3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd05229fe0 CR3: 000000000ddb0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/kernel/process.c:767 [inline]
 default_idle+0x9/0x20 arch/x86/kernel/process.c:768
 default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:199 [inline]
 do_idle+0x2e0/0x540 kernel/sched/idle.c:355
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
 rest_init+0x2de/0x300 init/main.c:717
 start_kernel+0x392/0x3e0 init/main.c:1175
 x86_64_start_reservations+0x24/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x137/0x1b0 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x157
 </TASK>