Extracting prog: 5m11.765240222s
Minimizing prog: 18m28.751960443s
Simplifying prog options: 0s
Extracting C: 3m11.253910585s
Simplifying C: 29m12.445086408s


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:4 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:4 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:4 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:4 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:4 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$squashfs-execveat
program crashed: INFO: task hung in evict
simplifying C reproducer
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$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)="$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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
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
reproducing took 1h6m16.135851873s
repro crashed as (corrupted=false):
INFO: task syz-executor:5910 blocked 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:21800 pid:5910  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 io_schedule+0x80/0xd0 kernel/sched/core.c:9024
 folio_wait_bit_common+0x881/0xfa0 mm/filemap.c:1329
 __filemap_get_folio+0xbc/0xbe0 mm/filemap.c:1910
 truncate_inode_pages_range+0x425/0xea0 mm/truncate.c:401
 evict+0x4ca/0x8a0 fs/inode.c:707
 dispose_list fs/inode.c:738 [inline]
 evict_inodes+0x64a/0x6e0 fs/inode.c:792
 generic_shutdown_super+0x97/0x2b0 fs/super.c:672
 kill_block_super+0x44/0x90 fs/super.c:1668
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x3d7/0x460 fs/namespace.c:1259
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f126b99f397
RSP: 002b:00007ffddc343018 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f126ba3448b RCX: 00007f126b99f397
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffddc3430d0
RBP: 00007ffddc3430d0 R08: 00007ffddc3440d0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffddc344160
R13: 00007f126ba3448b R14: 0000000000028be2 R15: 00007ffddc3441a0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
 #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by kworker/u4:8/2903:
3 locks held by kworker/u4:11/2953:
 #0: ffff8880b8f3c258 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
 #1: ffff8880b8f28a00 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
 #1: ffff8880b8f28a00 (psi_seq){-.-.}-{0:0}, at: __schedule+0x21d3/0x4660 kernel/sched/core.c:6696
 #2: ffff8880b8f295d8 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x6cf/0xd60 kernel/time/timer.c:1112
2 locks held by getty/5537:
 #0: ffff88803149a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x428/0x1370 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/5910:
 #0: ffff8880772420e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff8880772420e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff8880772420e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
3 locks held by kworker/0:3/5950:
 #0: ffff888017c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #0: ffff888017c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #1: ffffc9000252fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #1: ffffc9000252fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #2: ffff8880594aa240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x285/0x32c0 drivers/net/netdevsim/fib.c:1491
1 lock held by syz-executor/5957:
 #0: ffff88802efb40e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88802efb40e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88802efb40e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5978:
 #0: ffff88807c27a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807c27a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807c27a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
3 locks held by kworker/u5:3/5981:
 #0: ffff888021031938 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #0: ffff888021031938 ((wq_completion)hci2){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #1: ffffc90003487d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #1: ffffc90003487d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #2: ffff88805fe40e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1cc/0x380 net/bluetooth/hci_sync.c:332
1 lock held by syz-executor/5994:
 #0: ffff88805e2520e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805e2520e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805e2520e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6009:
 #0: ffff888021bc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888021bc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff888021bc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6036:
 #0: ffff88805902e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805902e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805902e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6058:
 #0: ffff88805a26e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805a26e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805a26e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6078:
 #0: ffff888059b580e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888059b580e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff888059b580e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6105:

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf59/0xfa0 kernel/hung_task.c:379
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2953 Comm: kworker/u4:11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:check_prev_add kernel/locking/lockdep.c:3172 [inline]
RIP: 0010:check_prevs_add kernel/locking/lockdep.c:3253 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3869 [inline]
RIP: 0010:__lock_acquire+0x52d3/0x7d80 kernel/locking/lockdep.c:5137
Code: 42 77 c6 15 00 0f 84 b1 00 00 00 31 c0 48 83 c0 30 48 39 c3 0f 84 1b be ff ff 4c 8d 73 10 4c 89 f0 48 c1 e8 03 42 80 3c 00 00 <74> 12 4c 89 f7 e8 83 16 77 00 49 b8 00 00 00 00 00 fc ff df 4d 8b
RSP: 0018:ffffc9000b9c73c0 EFLAGS: 00000046
RAX: 1ffffffff27695c1 RBX: ffffffff93b4adf8 RCX: ffffffff8168ecf7
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff911ef500
RBP: ffffc9000b9c7608 R08: dffffc0000000000 R09: 1ffffffff223dea0
R10: dffffc0000000000 R11: fffffbfff223dea1 R12: 0000000000000000
R13: 0000000000000144 R14: ffffffff93b4ae08 R15: ffff88802bb5c780
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff125354e9c CR3: 000000000cf32000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754
 _raw_spin_lock_nested+0x32/0x50 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
 raw_spin_rq_lock kernel/sched/sched.h:1379 [inline]
 rq_lock kernel/sched/sched.h:1688 [inline]
 __schedule+0x338/0x4660 kernel/sched/core.c:6615
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868
 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:823 [inline]
 nsim_dev_trap_report_work+0x99c/0xa90 drivers/net/netdevsim/dev.c:851
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>

final repro crashed as (corrupted=false):
INFO: task syz-executor:5910 blocked 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:21800 pid:5910  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 io_schedule+0x80/0xd0 kernel/sched/core.c:9024
 folio_wait_bit_common+0x881/0xfa0 mm/filemap.c:1329
 __filemap_get_folio+0xbc/0xbe0 mm/filemap.c:1910
 truncate_inode_pages_range+0x425/0xea0 mm/truncate.c:401
 evict+0x4ca/0x8a0 fs/inode.c:707
 dispose_list fs/inode.c:738 [inline]
 evict_inodes+0x64a/0x6e0 fs/inode.c:792
 generic_shutdown_super+0x97/0x2b0 fs/super.c:672
 kill_block_super+0x44/0x90 fs/super.c:1668
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x3d7/0x460 fs/namespace.c:1259
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f126b99f397
RSP: 002b:00007ffddc343018 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f126ba3448b RCX: 00007f126b99f397
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffddc3430d0
RBP: 00007ffddc3430d0 R08: 00007ffddc3440d0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffddc344160
R13: 00007f126ba3448b R14: 0000000000028be2 R15: 00007ffddc3441a0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
 #0: ffffffff8d1320e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by kworker/u4:8/2903:
3 locks held by kworker/u4:11/2953:
 #0: ffff8880b8f3c258 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
 #1: ffff8880b8f28a00 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
 #1: ffff8880b8f28a00 (psi_seq){-.-.}-{0:0}, at: __schedule+0x21d3/0x4660 kernel/sched/core.c:6696
 #2: ffff8880b8f295d8 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x6cf/0xd60 kernel/time/timer.c:1112
2 locks held by getty/5537:
 #0: ffff88803149a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x428/0x1370 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/5910:
 #0: ffff8880772420e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff8880772420e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff8880772420e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
3 locks held by kworker/0:3/5950:
 #0: ffff888017c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #0: ffff888017c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #1: ffffc9000252fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #1: ffffc9000252fd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #2: ffff8880594aa240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x285/0x32c0 drivers/net/netdevsim/fib.c:1491
1 lock held by syz-executor/5957:
 #0: ffff88802efb40e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88802efb40e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88802efb40e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5978:
 #0: ffff88807c27a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807c27a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807c27a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
3 locks held by kworker/u5:3/5981:
 #0: ffff888021031938 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #0: ffff888021031938 ((wq_completion)hci2){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #1: ffffc90003487d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2632 [inline]
 #1: ffffc90003487d00 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_scheduled_works+0x975/0x1600 kernel/workqueue.c:2734
 #2: ffff88805fe40e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1cc/0x380 net/bluetooth/hci_sync.c:332
1 lock held by syz-executor/5994:
 #0: ffff88805e2520e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805e2520e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805e2520e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6009:
 #0: ffff888021bc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888021bc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff888021bc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6036:
 #0: ffff88805902e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805902e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805902e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6058:
 #0: ffff88805a26e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805a26e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805a26e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6078:
 #0: ffff888059b580e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888059b580e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff888059b580e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6105:

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xf59/0xfa0 kernel/hung_task.c:379
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2953 Comm: kworker/u4:11 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:check_prev_add kernel/locking/lockdep.c:3172 [inline]
RIP: 0010:check_prevs_add kernel/locking/lockdep.c:3253 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3869 [inline]
RIP: 0010:__lock_acquire+0x52d3/0x7d80 kernel/locking/lockdep.c:5137
Code: 42 77 c6 15 00 0f 84 b1 00 00 00 31 c0 48 83 c0 30 48 39 c3 0f 84 1b be ff ff 4c 8d 73 10 4c 89 f0 48 c1 e8 03 42 80 3c 00 00 <74> 12 4c 89 f7 e8 83 16 77 00 49 b8 00 00 00 00 00 fc ff df 4d 8b
RSP: 0018:ffffc9000b9c73c0 EFLAGS: 00000046
RAX: 1ffffffff27695c1 RBX: ffffffff93b4adf8 RCX: ffffffff8168ecf7
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff911ef500
RBP: ffffc9000b9c7608 R08: dffffc0000000000 R09: 1ffffffff223dea0
R10: dffffc0000000000 R11: fffffbfff223dea1 R12: 0000000000000000
R13: 0000000000000144 R14: ffffffff93b4ae08 R15: ffff88802bb5c780
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff125354e9c CR3: 000000000cf32000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 lock_acquire+0x19e/0x420 kernel/locking/lockdep.c:5754
 _raw_spin_lock_nested+0x32/0x50 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
 raw_spin_rq_lock kernel/sched/sched.h:1379 [inline]
 rq_lock kernel/sched/sched.h:1688 [inline]
 __schedule+0x338/0x4660 kernel/sched/core.c:6615
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868
 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:823 [inline]
 nsim_dev_trap_report_work+0x99c/0xa90 drivers/net/netdevsim/dev.c:851
 process_one_work kernel/workqueue.c:2657 [inline]
 process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734
 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>