Extracting prog: 4m57.906757363s
Minimizing prog: 18m28.536774505s
Simplifying prog options: 0s
Extracting C: 3m12.158963479s
Simplifying C: 26m14.699829862s


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)="$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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 1h2m48.396122665s
repro crashed as (corrupted=false):
INFO: task syz-executor:5909 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:21736 pid:5909  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1553/0x45a0 kernel/sched/core.c:6700
 schedule+0xbd/0x170 kernel/sched/core.c:6774
 io_schedule+0x80/0xd0 kernel/sched/core.c:9023
 folio_wait_bit_common+0x714/0xfa0 mm/filemap.c:1329
 __filemap_get_folio+0xbc/0xbb0 mm/filemap.c:1910
 truncate_inode_pages_range+0x46b/0xfb0 mm/truncate.c:401
 evict+0x4dd/0x8d0 fs/inode.c:707
 dispose_list fs/inode.c:738 [inline]
 evict_inodes+0x606/0x6a0 fs/inode.c:792
 generic_shutdown_super+0x97/0x2b0 fs/super.c:672
 kill_block_super+0x44/0x90 fs/super.c:1660
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x43b/0x4d0 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: 0033:0x7f3001f9e097
RSP: 002b:00007ffdd3aa9ef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f30020321ca RCX: 00007f3001f9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdd3aa9fb0
RBP: 00007ffdd3aa9fb0 R08: 00007ffdd3aaafb0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdd3aab040
R13: 00007f30020321ca R14: 000000000002cc6f R15: 00007ffdd3aab080
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 #0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
 #0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by getty/5532:
 #0: ffff88802d91f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x433/0x1390 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/5909:
 #0: ffff8880792a60e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff8880792a60e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff8880792a60e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5959:
 #0: ffff88807efba0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807efba0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807efba0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5976:
 #0: ffff88807a6860e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807a6860e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807a6860e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5992:
 #0: ffff888030b400e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888030b400e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff888030b400e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6014:
 #0: ffff88807c49e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807c49e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807c49e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6035:
 #0: ffff88807855a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807855a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807855a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6056:
 #0: ffff88805b0200e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805b0200e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805b0200e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6083:
 #0: ffff88802fbc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88802fbc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88802fbc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513

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

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 04/18/2026
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+0xf3d/0xf80 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: 60 Comm: kworker/u4:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: bat_events batadv_nc_worker
RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
RIP: 0010:do_raw_spin_lock+0x69/0x2c0 kernel/locking/spinlock_debug.c:114
Code: 41 48 c7 44 24 28 c0 a2 98 8c 48 c7 44 24 30 f0 82 69 81 4c 8d 64 24 20 49 c1 ec 03 48 b8 f1 f1 f1 f1 f8 f3 f3 f3 4b 89 04 2c <4c> 8d 77 04 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 c3 01
RSP: 0018:ffffc900015b7a00 EFLAGS: 00000a06
RAX: f3f3f3f8f1f1f1f1 RBX: ffff88801b315080 RCX: f259e69612348100
RDX: 0000000000000000 RSI: ffffffff8acadd60 RDI: ffff88801b315080
RBP: ffffc900015b7ab8 R08: dffffc0000000000 R09: 1ffffffff22398bd
R10: dffffc0000000000 R11: fffffbfff22398be R12: 1ffff920002b6f44
R13: dffffc0000000000 R14: ffff88802e3da300 R15: ffff88802e3da310
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564400da7d88 CR3: 000000000cf32000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 batadv_nc_purge_paths+0xe7/0x3a0 net/batman-adv/network-coding.c:442
 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2730
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2811
 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:5909 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:21736 pid:5909  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5381 [inline]
 __schedule+0x1553/0x45a0 kernel/sched/core.c:6700
 schedule+0xbd/0x170 kernel/sched/core.c:6774
 io_schedule+0x80/0xd0 kernel/sched/core.c:9023
 folio_wait_bit_common+0x714/0xfa0 mm/filemap.c:1329
 __filemap_get_folio+0xbc/0xbb0 mm/filemap.c:1910
 truncate_inode_pages_range+0x46b/0xfb0 mm/truncate.c:401
 evict+0x4dd/0x8d0 fs/inode.c:707
 dispose_list fs/inode.c:738 [inline]
 evict_inodes+0x606/0x6a0 fs/inode.c:792
 generic_shutdown_super+0x97/0x2b0 fs/super.c:672
 kill_block_super+0x44/0x90 fs/super.c:1660
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x43b/0x4d0 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: 0033:0x7f3001f9e097
RSP: 002b:00007ffdd3aa9ef8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f30020321ca RCX: 00007f3001f9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdd3aa9fb0
RBP: 00007ffdd3aa9fb0 R08: 00007ffdd3aaafb0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdd3aab040
R13: 00007f30020321ca R14: 000000000002cc6f R15: 00007ffdd3aab080
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 #0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
 #0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by getty/5532:
 #0: ffff88802d91f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x433/0x1390 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/5909:
 #0: ffff8880792a60e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff8880792a60e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff8880792a60e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5959:
 #0: ffff88807efba0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807efba0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807efba0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5976:
 #0: ffff88807a6860e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807a6860e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807a6860e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5992:
 #0: ffff888030b400e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff888030b400e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff888030b400e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6014:
 #0: ffff88807c49e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807c49e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807c49e0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6035:
 #0: ffff88807855a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88807855a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88807855a0e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6056:
 #0: ffff88805b0200e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88805b0200e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88805b0200e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6083:
 #0: ffff88802fbc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
 #0: ffff88802fbc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
 #0: ffff88802fbc80e0 (&type->s_umount_key#56){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513

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

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 04/18/2026
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+0xf3d/0xf80 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: 60 Comm: kworker/u4:5 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: bat_events batadv_nc_worker
RIP: 0010:debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
RIP: 0010:do_raw_spin_lock+0x69/0x2c0 kernel/locking/spinlock_debug.c:114
Code: 41 48 c7 44 24 28 c0 a2 98 8c 48 c7 44 24 30 f0 82 69 81 4c 8d 64 24 20 49 c1 ec 03 48 b8 f1 f1 f1 f1 f8 f3 f3 f3 4b 89 04 2c <4c> 8d 77 04 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 c3 01
RSP: 0018:ffffc900015b7a00 EFLAGS: 00000a06
RAX: f3f3f3f8f1f1f1f1 RBX: ffff88801b315080 RCX: f259e69612348100
RDX: 0000000000000000 RSI: ffffffff8acadd60 RDI: ffff88801b315080
RBP: ffffc900015b7ab8 R08: dffffc0000000000 R09: 1ffffffff22398bd
R10: dffffc0000000000 R11: fffffbfff22398be R12: 1ffff920002b6f44
R13: dffffc0000000000 R14: ffff88802e3da300 R15: ffff88802e3da310
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564400da7d88 CR3: 000000000cf32000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 batadv_nc_purge_paths+0xe7/0x3a0 net/batman-adv/network-coding.c:442
 batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
 process_one_work kernel/workqueue.c:2653 [inline]
 process_scheduled_works+0xa5d/0x15d0 kernel/workqueue.c:2730
 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2811
 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>