INFO: task syz.3.191:6522 blocked in I/O wait for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kerne[ 576.688556][ T37] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.191 state:D stack:23608 pid:6522 tgid:6520 ppid:5792 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x16ec/0x5620 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
io_schedule+0x7f/0xd0 kernel/sched/core.c:8110
folio_wait_bit_common+0x6dd/0xbc0 mm/filemap.c:1324
__folio_lock mm/filemap.c:1705 [inline]
folio_lock include/linux/pagemap.h:1159 [inline]
__filemap_get_folio_mpol+0x16d/0xa50 mm/filemap.c:1960
__filemap_get_folio include/linux/pagemap.h:763 [inline]
attr_make_nonresident+0x87e/0xbc0 fs/ntfs3/attrib.c:322
attr_set_size_res fs/ntfs3/attrib.c:401 [inline]
attr_set_size_ex+0x20db/0x2e50 fs/ntfs3/attrib.c:466
attr_set_size fs/ntfs3/ntfs_fs.h:463 [inline]
ntfs_set_size+0x169/0x240 fs/ntfs3/inode.c:699
ntfs_extend+0x13e/0x540 fs/ntfs3/file.c:370
ntfs_setattr+0x2eb/0x9a0 fs/ntfs3/file.c:753
notify_change+0xc18/0xf60 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
vfs_truncate+0x4b7/0x540 fs/open.c:118
ksys_truncate+0xf3/0x1c0 fs/open.c:142
__do_sys_truncate fs/open.c:154 [inline]
__se_sys_truncate fs/open.c:152 [inline]
__x64_sys_truncate+0x5b/0x70 fs/open.c:152
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0x560 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8aaa04ce59
RSP: 002b:00007f8aa96ae028 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f8aaa2c5fa0 RCX: 00007f8aaa04ce59
RDX: 0000000000000000 RSI: 0000000000008da6 RDI: 0000200000000940
RBP: 00007f8aaa0e2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8aaa2c6038 R14: 00007f8aaa2c5fa0 R15: 00007ffe497fe3d8
</TASK>
INFO: task syz.3.191:6530 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.191 state:D stack:22160 pid:6530 tgid:6520 ppid:5792 task_flags:0x400140 flags:0x00080002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x16ec/0x5620 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7564
rt_mutex_slowlock_block kernel/locking/rtmutex.c:1662 [inline]
__rt_mutex_slowlock kernel/locking/rtmutex.c:1739 [inline]
__rt_mutex_slowlock_locked+0x1f28/0x2550 kernel/locking/rtmutex.c:1779
__rwbase_read_lock+0xc3/0x180 kernel/locking/rwbase_rt.c:114
rwbase_read_lock kernel/locking/rwbase_rt.c:147 [inline]
__down_read kernel/locking/rwsem.c:1496 [inline]
down_read+0x132/0x200 kernel/locking/rwsem.c:1570
attr_data_get_block+0xc5/0x310 fs/ntfs3/attrib.c:964
ntfs_iomap_begin+0x55b/0xfd0 fs/ntfs3/inode.c:774
iomap_iter+0x600/0xf90 fs/iomap/iter.c:110
iomap_read_folio+0x361/0x680 fs/iomap/buffered-io.c:600
ntfs_read_folio+0x3f0/0x4b0 fs/ntfs3/inode.c:653
filemap_read_folio+0x137/0x3b0 mm/filemap.c:2502
filemap_create_folio mm/filemap.c:2640 [inline]
filemap_get_pages+0xc4e/0x1e70 mm/filemap.c:2702
filemap_read+0x44a/0x1240 mm/filemap.c:2806
__kernel_read+0x50d/0x9c0 fs/read_write.c:532
integrity_kernel_read+0x89/0xd0 security/integrity/iint.c:28
ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:222 [inline]
ima_calc_file_hash+0x452/0x870 security/integrity/ima/ima_crypto.c:280
ima_collect_measurement+0x523/0x9d0 security/integrity/ima/ima_api.c:300
process_measurement+0x12d9/0x1c90 security/integrity/ima/ima_main.c:425
ima_file_check+0xe1/0x130 security/integrity/ima/ima_main.c:685
security_file_post_open+0xb3/0x260 security/security.c:2755
do_open fs/namei.c:4701 [inline]
path_openat+0x2e88/0x38a0 fs/namei.c:4858
do_file_open+0x23e/0x4a0 fs/namei.c:4887
do_sys_openat2+0x113/0x200 fs/open.c:1364
do_sys_open fs/open.c:1370 [inline]
__do_sys_openat fs/open.c:1386 [inline]
__se_sys_openat fs/open.c:1381 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1381
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0x560 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8aaa04ce59
RSP: 002b:00007f8aa966c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8aaa2c6180 RCX: 00007f8aaa04ce59
RDX: 0000000000000042 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f8aaa0e2d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8aaa2c6218 R14: 00007f8aaa2c6180 R15: 00007ffe497fe3d8
</TASK>
Showing all locks held in the system:
1 lock held by khungtaskd/37:
#0: ffffffff8dfc80c0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffffffff8dfc80c0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8dfc80c0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by kworker/1:2/821:
2 locks held by getty/5350:
#0: ffff8880294be0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90003cb62e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13a0 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5783:
#0: ffff88805a6da480 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
1 lock held by udevd/5884:
#0: ffff888025b44480 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
4 locks held by udevd/6066:
1 lock held by udevd/6089:
#0: ffff888025b44480 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
6 locks held by kworker/u8:11/6125:
4 locks held by syz.3.191/6522:
#0: ffff88803fc8a480 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
#1: ffff888045ffb8d0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock_killable include/linux/fs.h:1034 [inline]
#1: ffff888045ffb8d0 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: do_truncate+0x18f/0x250 fs/open.c:63
#2: ffff888045ffb618 (&ni->ni_lock/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1212 [inline]
#2: ffff888045ffb618 (&ni->ni_lock/5){+.+.}-{4:4}, at: ntfs_set_size+0x134/0x240 fs/ntfs3/inode.c:696
#3: ffff888045ffb6b8 (&ni->file.run_lock#3){++++}-{4:4}, at: ntfs_set_size+0x143/0x240 fs/ntfs3/inode.c:697
3 locks held by syz.3.191/6530:
#0: ffff88802d48e558 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: process_measurement+0x7fd/0x1c90 security/integrity/ima/ima_main.c:319
#1: ffff888045ffbaa0 (mapping.invalidate_lock#3){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1094 [inline]
#1: ffff888045ffbaa0 (mapping.invalidate_lock#3){++++}-{4:4}, at: filemap_create_folio mm/filemap.c:2631 [inline]
#1: ffff888045ffbaa0 (mapping.invalidate_lock#3){++++}-{4:4}, at: filemap_get_pages+0xb39/0x1e70 mm/filemap.c:2702
#2: ffff888045ffb6b8 (&ni->file.run_lock#3){++++}-{4:4}, at: attr_data_get_block+0xc5/0x310 fs/ntfs3/attrib.c:964
1 lock held by udevd/6655:
#0: ffff888025b44480 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
5 locks held by udevd/6658:
1 lock held by syz.4.832/8056:
1 lock held by syz.0.835/8065:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 37 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
<TASK>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
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+0xfd3/0x1030 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 821 Comm: kworker/1:2 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:reacquire_held_locks+0xbf/0x190 kernel/locking/lockdep.c:5386
Code: 77 af fd 02 85 c0 74 1c 83 3d f0 8b e8 0d 00 75 13 48 8d 3d 63 ab eb 0d 48 c7 c6 b3 b7 71 8d 67 48 0f b9 3a 90 31 c0 4c 89 e7 <8b> 70 58 41 8b 46 fc 89 c2 c1 ea 0f 83 e2 01 89 c1 c1 e9 10 83 e1
RSP: 0000:ffffc9000536f9b8 EFLAGS: 00000002
RAX: ffffffff9313cbc8 RBX: ffffc9000536fa0c RCX: ffffc9000536fa0c
RDX: 0000000000000003 RSI: 0000000000000004 RDI: ffffffff8dfc80c0
RBP: 00000000ffffffff R08: ffffffff8b1fd920 R09: ffffffff8dfc80c0
R10: dffffc0000000000 R11: fffffbfff1f1223f R12: 0000000000000003
R13: 0000000000000003 R14: ffff888025fb8c94 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888126270000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3589994000 CR3: 000000005ba8c000 CR4: 00000000003526f0
Call Trace:
<TASK>
__lock_release kernel/locking/lockdep.c:5574 [inline]
lock_release+0x199/0x3c0 kernel/locking/lockdep.c:5889
rt_spin_unlock+0x29/0x200 kernel/locking/spinlock_rt.c:80
spin_unlock include/linux/spinlock_rt.h:109 [inline]
wg_ratelimiter_gc_entries+0x3a8/0x480 drivers/net/wireguard/ratelimiter.c:76
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
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>