INFO: task syz.5.370:7723 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.370       state:D stack:25752 pid:7723  tgid:7723  ppid:7290   task_flags:0x400040 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x14bc/0x5000 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
 ima_check_last_writer security/integrity/ima/ima_main.c:192 [inline]
 ima_file_free+0x16c/0x460 security/integrity/ima/ima_main.c:233
 security_file_release+0x93/0x150 security/security.c:2398
 __fput+0x3b3/0xa70 fs/file_table.c:462
 task_work_run+0x1d4/0x260 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:44 [inline]
 exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2e3/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf47d8f749
RSP: 002b:00007ffe67c4bf68 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fcf47fe7da0 RCX: 00007fcf47d8f749
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fcf47fe7da0 R08: 0000000000000200 R09: 0000001e67c4c25f
R10: 00007fcf47fe7cb0 R11: 0000000000000246 R12: 000000000003477a
R13: 00007fcf47fe6270 R14: ffffffffffffffff R15: 00007ffe67c4c080
 </TASK>
INFO: task syz.5.370:7724 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.370       state:D stack:23192 pid:7724  tgid:7723  ppid:7290   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x14bc/0x5000 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7017
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x7e6/0x1350 kernel/locking/mutex.c:776
 ni_lock fs/ntfs3/ntfs_fs.h:1127 [inline]
 ntfs_read_folio+0xba/0x200 fs/ntfs3/inode.c:728
 filemap_read_folio+0x117/0x380 mm/filemap.c:2496
 filemap_create_folio mm/filemap.c:2634 [inline]
 filemap_get_pages+0xc22/0x1dc0 mm/filemap.c:2696
 filemap_read+0x3f6/0x11a0 mm/filemap.c:2800
 __kernel_read+0x4cf/0x960 fs/read_write.c:530
 integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline]
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
 ima_calc_file_hash+0x85e/0x16f0 security/integrity/ima/ima_crypto.c:568
 ima_collect_measurement+0x428/0x8f0 security/integrity/ima/ima_api.c:293
 process_measurement+0x111e/0x1a70 security/integrity/ima/ima_main.c:406
 ima_file_check+0xd9/0x130 security/integrity/ima/ima_main.c:663
 security_file_post_open+0xbb/0x290 security/security.c:2652
 do_open fs/namei.c:4630 [inline]
 path_openat+0x3456/0x3dd0 fs/namei.c:4787
 do_filp_open+0x1fa/0x410 fs/namei.c:4814
 do_sys_openat2+0x121/0x200 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_open fs/open.c:1444 [inline]
 __se_sys_open fs/open.c:1440 [inline]
 __x64_sys_open+0x11e/0x150 fs/open.c:1440
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf47d8f749
RSP: 002b:00007fcf48bfc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fcf47fe5fa0 RCX: 00007fcf47d8f749
RDX: 0000000000000020 RSI: 0000000000000080 RDI: 0000200000000000
RBP: 00007fcf47e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcf47fe6038 R14: 00007fcf47fe5fa0 R15: 00007ffe67c4be08
 </TASK>
INFO: task syz.5.370:7727 blocked for more than 144 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.370       state:D stack:26264 pid:7727  tgid:7723  ppid:7290   task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x14bc/0x5000 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 io_schedule+0x80/0xd0 kernel/sched/core.c:7792
 folio_wait_bit_common+0x6b0/0xb80 mm/filemap.c:1323
 __folio_lock mm/filemap.c:1699 [inline]
 folio_lock include/linux/pagemap.h:1159 [inline]
 __filemap_get_folio_mpol+0x13e/0xb00 mm/filemap.c:1954
 __filemap_get_folio include/linux/pagemap.h:763 [inline]
 attr_make_nonresident+0x87f/0xbe0 fs/ntfs3/attrib.c:294
 attr_set_size_res fs/ntfs3/attrib.c:373 [inline]
 attr_set_size+0x1f9f/0x2c70 fs/ntfs3/attrib.c:434
 ntfs_set_size+0x164/0x200 fs/ntfs3/inode.c:863
 ntfs_extend+0x1d9/0x970 fs/ntfs3/file.c:434
 ntfs_setattr+0x2e8/0xbe0 fs/ntfs3/file.c:853
 notify_change+0xc1a/0xf40 fs/attr.c:546
 do_truncate+0x1a4/0x220 fs/open.c:68
 vfs_truncate+0x493/0x520 fs/open.c:118
 do_sys_truncate+0xdb/0x190 fs/open.c:141
 __do_sys_truncate fs/open.c:153 [inline]
 __se_sys_truncate fs/open.c:151 [inline]
 __x64_sys_truncate+0x5b/0x70 fs/open.c:151
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcf47d8f749
RSP: 002b:00007fcf48bdb038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007fcf47fe6090 RCX: 00007fcf47d8f749
RDX: 0000000000000000 RSI: 0000000003000000 RDI: 0000200000000900
RBP: 00007fcf47e13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcf47fe6128 R14: 00007fcf47fe6090 R15: 00007ffe67c4be08
 </TASK>

Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
1 lock held by khungtaskd/31:
 #0: ffffffff8df419e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #0: ffffffff8df419e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline]
 #0: ffffffff8df419e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
3 locks held by kworker/u8:10/2993:
 #0: ffff88813fe69948 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x841/0x15a0 kernel/workqueue.c:3236
 #1: ffffc9000b807b80 ((work_completion)(&map->work)){+.+.}-{0:0}, at: process_one_work+0x868/0x15a0 kernel/workqueue.c:3237
 #2: ffffffff8df47538 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:311 [inline]
 #2: ffffffff8df47538 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730 kernel/rcu/tree_exp.h:956
2 locks held by getty/5583:
 #0: ffff88814d1a00a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x449/0x1460 drivers/tty/n_tty.c:2211
1 lock held by syz.5.370/7723:
 #0: ffff88807e56cb08 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: ima_check_last_writer security/integrity/ima/ima_main.c:192 [inline]
 #0: ffff88807e56cb08 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: ima_file_free+0x16c/0x460 security/integrity/ima/ima_main.c:233
3 locks held by syz.5.370/7724:
 #0: ffff88807e56cb08 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: process_measurement+0x74e/0x1a70 security/integrity/ima/ima_main.c:300
 #1: ffff8880562ff270 (mapping.invalidate_lock#8){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1092 [inline]
 #1: ffff8880562ff270 (mapping.invalidate_lock#8){.+.+}-{4:4}, at: filemap_create_folio mm/filemap.c:2625 [inline]
 #1: ffff8880562ff270 (mapping.invalidate_lock#8){.+.+}-{4:4}, at: filemap_get_pages+0xadf/0x1dc0 mm/filemap.c:2696
 #2: ffff8880562fee38 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1127 [inline]
 #2: ffff8880562fee38 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_read_folio+0xba/0x200 fs/ntfs3/inode.c:728
4 locks held by syz.5.370/7727:
 #0: ffff888076f32420 (sb_writers#22){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:499
 #1: ffff8880562ff0d0 (&sb->s_type->i_mutex_key#36){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:1032 [inline]
 #1: ffff8880562ff0d0 (&sb->s_type->i_mutex_key#36){+.+.}-{4:4}, at: do_truncate+0x171/0x220 fs/open.c:63
 #2: ffff8880562fee38 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1127 [inline]
 #2: ffff8880562fee38 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_set_size+0x131/0x200 fs/ntfs3/inode.c:860
 #3: ffff8880562feee8 (&ni->file.run_lock#3){++++}-{4:4}, at: ntfs_set_size+0x140/0x200 fs/ntfs3/inode.c:861
1 lock held by syz-executor/7954:
 #0: ffffffff8df47538 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:343 [inline]
 #0: ffffffff8df47538 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b9/0x730 kernel/rcu/tree_exp.h:956

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [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:346 [inline]
 watchdog+0xf95/0xfe0 kernel/hung_task.c:515
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x599/0xb30 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5814 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:194 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 kernel/kcov.c:217
Code: 08 70 7d 92 65 8b 15 e8 bc bb 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 6c 16 00 00 00 74 2c 8b 91 48 16 00 00 <83> fa 02 75 21 48 8b 91 50 16 00 00 48 8b 32 48 8d 7e 01 8b 89 4c
RSP: 0018:ffffc9000405f7b8 EFLAGS: 00000046
RAX: ffffffff8165d490 RBX: dffffc0000000000 RCX: ffff88803282db80
RDX: 0000000040000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000405f990 R08: ffff88801cec5b87 R09: 1ffff110039d8b70
R10: dffffc0000000000 R11: ffffed10039d8b71 R12: ffff88801cec7476
R13: ffff88803282db80 R14: ffff88801cec5b80 R15: ffff88803282dba0
FS:  000055556e69b500(0000) GS:ffff888125e49000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc3463ab28 CR3: 0000000031256000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 _static_cpu_has arch/x86/include/asm/cpufeature.h:101 [inline]
 update_task_stack arch/x86/include/asm/switch_to.h:75 [inline]
 __switch_to+0xd70/0x1670 arch/x86/kernel/process_64.c:674
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x14bc/0x5000 kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6960
 do_nanosleep+0x1c5/0x610 kernel/time/hrtimer.c:2116
 hrtimer_nanosleep+0x169/0x360 kernel/time/hrtimer.c:2163
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1398 [inline]
 __se_sys_clock_nanosleep+0x339/0x390 kernel/time/posix-timers.c:1375
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f87f5fc1fc3
Code: 1f 84 00 00 00 00 00 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d 9e 95 1f 00 00 74 14 b8 e6 00 00 00 0f 05 <f7> d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10
RSP: 002b:00007ffd93f1ddd8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f87f5fc1fc3
RDX: 00007ffd93f1ddf0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 7fffffffffffffff R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd93f1e240
R13: 0000000000000004 R14: 00007ffd93f1de2c R15: 00007ffd93f1dec0
 </TASK>