INFO: task syz.9.436:9169 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.436 state:D stack:25152 pid:9169 tgid:9167 ppid:8049 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0x1553/0x5240 kernel/sched/core.c:6911
__schedule_loop kernel/sched/core.c:6993 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7008
io_schedule+0x80/0xe0 kernel/sched/core.c:7835
folio_wait_bit_common+0x6dd/0xbc0 mm/filemap.c:1323
__folio_lock mm/filemap.c:1704 [inline]
folio_lock include/linux/pagemap.h:1159 [inline]
__filemap_get_folio_mpol+0x16d/0xa50 mm/filemap.c:1959
__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:466 [inline]
ntfs_set_size+0x169/0x240 fs/ntfs3/inode.c:743
ntfs_extend+0x13e/0x550 fs/ntfs3/file.c:370
ntfs_setattr+0x2eb/0x9a0 fs/ntfs3/file.c:756
notify_change+0xc18/0xf60 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
vfs_truncate+0x4b7/0x540 fs/open.c:118
do_sys_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+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f94d487c819
RSP: 002b:00007f94d2ad6028 EFLAGS: 00000246 ORIG_RAX: 000000000000004c
RAX: ffffffffffffffda RBX: 00007f94d4af5fa0 RCX: 00007f94d487c819
RDX: 0000000000000000 RSI: 0000000000008da6 RDI: 0000200000000940
RBP: 00007f94d4912c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f94d4af6038 R14: 00007f94d4af5fa0 R15: 00007fff8b679048
INFO: task syz.9.436:9176 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.436 state:D stack:26600 pid:9176 tgid:9167 ppid:8049 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0x1553/0x5240 kernel/sched/core.c:6911
__schedule_loop kernel/sched/core.c:6993 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7289
rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline]
__rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
__rt_mutex_slowlock_locked+0x1f8f/0x25c0 kernel/locking/rtmutex.c:1760
__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:1466 [inline]
down_read+0x132/0x200 kernel/locking/rwsem.c:1539
attr_data_get_block+0xc5/0x310 fs/ntfs3/attrib.c:964
ntfs_iomap_begin+0x56c/0xfc0 fs/ntfs3/inode.c:818
iomap_iter+0x600/0x1020 fs/iomap/iter.c:110
iomap_read_folio+0x32c/0x690 fs/iomap/buffered-io.c:600
ntfs_read_folio+0x3b5/0x460 fs/ntfs3/inode.c:697
filemap_read_folio+0x137/0x3b0 mm/filemap.c:2501
filemap_create_folio mm/filemap.c:2639 [inline]
filemap_get_pages+0xc4e/0x1ea0 mm/filemap.c:2701
filemap_read+0x44a/0x1240 mm/filemap.c:2805
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x58b/0xa80 fs/read_write.c:574
ksys_read+0x156/0x270 fs/read_write.c:717
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f94d487c819
RSP: 002b:00007f94d2ab5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f94d4af6090 RCX: 00007f94d487c819
RDX: 0000000000001000 RSI: 0000200000001400 RDI: 0000000000000005
RBP: 00007f94d4912c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f94d4af6128 R14: 00007f94d4af6090 R15: 00007fff8b679048
INFO: task syz.9.436:9178 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.9.436 state:D stack:27624 pid:9178 tgid:9167 ppid:8049 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0x1553/0x5240 kernel/sched/core.c:6911
__schedule_loop kernel/sched/core.c:6993 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7289
rt_mutex_slowlock_block kernel/locking/rtmutex.c:1647 [inline]
__rt_mutex_slowlock kernel/locking/rtmutex.c:1721 [inline]
__rt_mutex_slowlock_locked+0x1f8f/0x25c0 kernel/locking/rtmutex.c:1760
rt_mutex_slowlock+0xbd/0x170 kernel/locking/rtmutex.c:1800
__rt_mutex_lock kernel/locking/rtmutex.c:1815 [inline]
rwbase_write_lock+0x14d/0x730 kernel/locking/rwbase_rt.c:244
inode_lock include/linux/fs.h:1028 [inline]
process_measurement+0x457/0x1c90 security/integrity/ima/ima_main.c:282
ima_file_check+0xe1/0x130 security/integrity/ima/ima_main.c:667
security_file_post_open+0xb3/0x260 security/security.c:2653
do_open fs/namei.c:4679 [inline]
path_openat+0x2e88/0x38a0 fs/namei.c:4836
do_file_open+0x23e/0x4a0 fs/namei.c:4865
do_sys_openat2+0x113/0x200 fs/open.c:1366
do_sys_open fs/open.c:1372 [inline]
__do_sys_openat fs/open.c:1388 [inline]
__se_sys_openat fs/open.c:1383 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1383
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f94d487c819
RSP: 002b:00007f94d2a94028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f94d4af6180 RCX: 00007f94d487c819
RDX: 00000000001c1242 RSI: 0000200000000100 RDI: ffffffffffffff9c
RBP: 00007f94d4912c91 R08: 0000000000000000 R09: 0000000000000000
R10: 836d9fb164f926b1 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f94d4af6218 R14: 00007f94d4af6180 R15: 00007fff8b679048
Showing all locks held in the system:
1 lock held by khungtaskd/38:
#0: ffffffff8ddcb980 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
#0: ffffffff8ddcb980 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline]
#0: ffffffff8ddcb980 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
2 locks held by getty/5551:
#0: ffff8880371880a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90003e8b2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13c0 drivers/tty/n_tty.c:2211
4 locks held by syz.9.436/9169:
#0: ffff88805b05a480 (sb_writers#16){++++}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
#1: ffff888061642290 (&sb->s_type->i_mutex_key#28){++++}-{4:4}, at: inode_lock_killable include/linux/fs.h:1033 [inline]
#1: ffff888061642290 (&sb->s_type->i_mutex_key#28){++++}-{4:4}, at: do_truncate+0x18f/0x250 fs/open.c:63
#2: ffff888061641fd0 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1217 [inline]
#2: ffff888061641fd0 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_set_size+0x134/0x240 fs/ntfs3/inode.c:740
#3: ffff888061642070 (&ni->file.run_lock#3){++++}-{4:4}, at: ntfs_set_size+0x143/0x240 fs/ntfs3/inode.c:741
3 locks held by syz.9.436/9176:
#0: ffff8880310f0d28 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x252/0x320 fs/file.c:1261
#1: ffff888061642460 (mapping.invalidate_lock#4){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1093 [inline]
#1: ffff888061642460 (mapping.invalidate_lock#4){.+.+}-{4:4}, at: filemap_create_folio mm/filemap.c:2630 [inline]
#1: ffff888061642460 (mapping.invalidate_lock#4){.+.+}-{4:4}, at: filemap_get_pages+0xb39/0x1ea0 mm/filemap.c:2701
#2: ffff888061642070 (&ni->file.run_lock#3){++++}-{4:4}, at: attr_data_get_block+0xc5/0x310 fs/ntfs3/attrib.c:964
2 locks held by syz.9.436/9178:
#0: ffff88805b05a480 (sb_writers#16){++++}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:493
#1: ffff888061642290 (&sb->s_type->i_mutex_key#28){++++}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
#1: ffff888061642290 (&sb->s_type->i_mutex_key#28){++++}-{4:4}, at: process_measurement+0x457/0x1c90 security/integrity/ima/ima_main.c:282
3 locks held by kworker/u8:16/10434:
1 lock held by syz.6.596/10598:
2 locks held by syz.5.599/10614:
4 locks held by syz.7.597/10613:
2 locks held by sed/10632:
5 locks held by syz.4.600/10634:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
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:161 [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+0xfd9/0x1030 kernel/hung_task.c:515
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 10634 Comm: syz.4.600 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:hlock_class kernel/locking/lockdep.c:234 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4879 [inline]
RIP: 0010:__lock_acquire+0x524/0x2cf0 kernel/locking/lockdep.c:5187
Code: 00 48 83 c3 28 41 89 c4 49 39 cf 0f 8d c7 00 00 00 49 83 ff 31 0f 83 83 00 00 00 8b 03 25 ff 1f 00 00 48 0f a3 05 6c 69 b6 11 <73> 10 48 69 c0 c8 00 00 00 48 8d 88 f0 a3 f7 92 eb 32 83 3d 73 f9
RSP: 0018:ffffc90004137198 EFLAGS: 00000007
RAX: 0000000000000056 RBX: ffff8880362e67a8 RCX: 0000000000000004
RDX: 0000000000000003 RSI: 0000000000000004 RDI: 0000000000000000
RBP: ffff8880362e67d8 R08: ffffffff82321b4a R09: ffffffff8ddcba40
R10: dffffc0000000000 R11: fffff940003e3bd1 R12: 0000000000000003
R13: ffff8880362e67d8 R14: ffff8880362e5b80 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff888126432000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f632c77fff8 CR3: 0000000065208000 CR4: 00000000003526f0
Call Trace:
lock_acquire+0xf0/0x2e0 kernel/locking/lockdep.c:5868
rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:948 [inline]
pfn_valid+0xd6/0x480 include/linux/mmzone.h:2197
page_table_check_clear+0x21/0x5f0 mm/page_table_check.c:70
ptep_get_and_clear_full arch/x86/include/asm/jump_label.h:-1 [inline]
get_and_clear_full_ptes include/linux/pgtable.h:846 [inline]
zap_present_folio_ptes mm/memory.c:1643 [inline]
zap_present_ptes mm/memory.c:1725 [inline]
do_zap_pte_range mm/memory.c:1827 [inline]
zap_pte_range mm/memory.c:1929 [inline]
zap_pmd_range mm/memory.c:2021 [inline]
zap_pud_range mm/memory.c:2049 [inline]
zap_p4d_range mm/memory.c:2070 [inline]
unmap_page_range+0x3015/0x4540 mm/memory.c:2091
unmap_single_vma mm/memory.c:2133 [inline]
unmap_vmas+0x48f/0x6a0 mm/memory.c:2171
exit_mmap+0x280/0xa10 mm/mmap.c:1302
__mmput+0xcb/0x3d0 kernel/fork.c:1175
exit_mm+0x168/0x220 kernel/exit.c:581
do_exit+0x6a2/0x23c0 kernel/exit.c:964
do_group_exit+0x21b/0x2d0 kernel/exit.c:1118
get_signal+0x125c/0x1310 kernel/signal.c:3034
arch_do_signal_or_restart+0xbc/0x830 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x176/0x620 kernel/entry/common.c:219
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f281a9c3b8e
Code: Unable to access opcode bytes at 0x7f281a9c3b64.
RSP: 002b:00007f2818d5d470 EFLAGS: 00010206
RAX: 000000000009a001 RBX: 00007f2818d5d530 RCX: 000000000000000f
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007f2818d5d5d0
RBP: 0000000000000102 R08: 00007f281091d000 R09: 000000000009a000
R10: 0000000000000000 R11: 00007f2818d5d540 R12: 0000000000000001
R13: 00007f281abc2600 R14: 0000000000000000 R15: 00007f2818d5d5d0