INFO: task syz.8.652:10338 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.652 state:D stack:24824 pid:10338 tgid:10338 ppid:9230 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x1681/0x54c0 kernel/sched/core.c:7188
__schedule_loop kernel/sched/core.c:7267 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7563
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+0x328/0x680 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_fault+0xc1c/0x1310 mm/filemap.c:3647
__do_fault+0x138/0x2a0 mm/memory.c:5458
do_shared_fault mm/memory.c:5957 [inline]
do_fault mm/memory.c:6031 [inline]
do_pte_missing+0x65b/0x2950 mm/memory.c:4550
handle_pte_fault mm/memory.c:6411 [inline]
__handle_mm_fault mm/memory.c:6549 [inline]
handle_mm_fault+0xd0a/0x13c0 mm/memory.c:6718
do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334
handle_page_fault arch/x86/mm/fault.c:1474 [inline]
exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fa8fcefbc98
RSP: 002b:00007ffd2ebcad28 EFLAGS: 00010246
RAX: 0000200000000180 RBX: 0000000000000004 RCX: 0031656c69662f2e
RDX: 0000000000000008 RSI: 0031656c69662f2e RDI: 0000200000000180
RBP: fffffffffffffffe R08: 0000001b2cb20000 R09: 0000000000000001
R10: 7ffffffffffffff7 R11: 0000000000000009 R12: 00007ffd2ebcae50
R13: 00007fa8fd1a618c R14: 0000000000089ef7 R15: 00007ffd2ebcae30
INFO: task syz.8.652:10342 blocked in I/O wait for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.652 state:D stack:25592 pid:10342 tgid:10338 ppid:9230 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x1681/0x54c0 kernel/sched/core.c:7188
__schedule_loop kernel/sched/core.c:7267 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7282
io_schedule+0x80/0xe0 kernel/sched/core.c:8109
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_force_nonresident+0x163/0x1f0 fs/ntfs3/attrib.c:2770
ntfs_fallocate+0x788/0x1230 fs/ntfs3/file.c:609
vfs_fallocate+0x672/0x7f0 fs/open.c:338
ksys_fallocate fs/open.c:362 [inline]
__do_sys_fallocate fs/open.c:367 [inline]
__se_sys_fallocate fs/open.c:365 [inline]
__x64_sys_fallocate+0xc0/0x110 fs/open.c:365
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa8fcf2cdd9
RSP: 002b:00007fa8fb15d028 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa8fd1a6090 RCX: 00007fa8fcf2cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007fa8fcfc2d69 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000008ffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa8fd1a6128 R14: 00007fa8fd1a6090 R15: 00007ffd2ebcabc8
INFO: task syz.8.652:10347 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.652 state:D stack:28920 pid:10347 tgid:10338 ppid:9230 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x1681/0x54c0 kernel/sched/core.c:7188
__schedule_loop kernel/sched/core.c:7267 [inline]
rt_mutex_schedule+0x76/0xf0 kernel/sched/core.c:7563
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
rt_mutex_slowlock+0xbd/0x170 kernel/locking/rtmutex.c:1819
__rt_mutex_lock kernel/locking/rtmutex.c:1834 [inline]
rwbase_write_lock+0x14d/0x730 kernel/locking/rwbase_rt.c:245
inode_lock include/linux/fs.h:1029 [inline]
ntfs_fallocate+0x2e7/0x1230 fs/ntfs3/file.c:486
vfs_fallocate+0x672/0x7f0 fs/open.c:338
ksys_fallocate fs/open.c:362 [inline]
__do_sys_fallocate fs/open.c:367 [inline]
__se_sys_fallocate fs/open.c:365 [inline]
__x64_sys_fallocate+0xc0/0x110 fs/open.c:365
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa8fcf2cdd9
RSP: 002b:00007fa8fb13c028 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fa8fd1a6180 RCX: 00007fa8fcf2cdd9
RDX: 0000000000004000 RSI: 0000000000000008 RDI: 0000000000000004
RBP: 00007fa8fcfc2d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa8fd1a6218 R14: 00007fa8fd1a6180 R15: 00007ffd2ebcabc8
Showing all locks held in the system:
7 locks held by kworker/u8:1/13:
#0: ffff88801b290938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3277 [inline]
#0: ffff88801b290938 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860 kernel/workqueue.c:3385
#1: ffffc90000127c40 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3278 [inline]
#1: ffffc90000127c40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860 kernel/workqueue.c:3385
#2: ffffffff8f347140 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x800 net/core/net_namespace.c:673
#3: ffff88806b201160 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1040 [inline]
#3: ffff88806b201160 (&dev->mutex){....}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:124 [inline]
#3: ffff88806b201160 (&dev->mutex){....}-{4:4}, at: devlink_pernet_pre_exit+0x129/0x420 net/devlink/core.c:555
#4: ffff88802ce70310 (&devlink->lock_key#31){+.+.}-{4:4}, at: devl_lock net/devlink/core.c:292 [inline]
#4: ffff88802ce70310 (&devlink->lock_key#31){+.+.}-{4:4}, at: devl_dev_lock net/devlink/devl_internal.h:125 [inline]
#4: ffff88802ce70310 (&devlink->lock_key#31){+.+.}-{4:4}, at: devlink_pernet_pre_exit+0x142/0x420 net/devlink/core.c:555
#5: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: nsim_destroy+0x13a/0x830 drivers/net/netdevsim/netdev.c:1187
#6: ffff888024d0cf78 (&dev_instance_lock_key#23){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2818 [inline]
#6: ffff888024d0cf78 (&dev_instance_lock_key#23){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x588/0x22b0 net/core/dev.c:12378
1 lock held by khungtaskd/38:
#0: ffffffff8dfc8140 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffffffff8dfc8140 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8dfc8140 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
3 locks held by kworker/u8:9/1389:
#0: ffff88801a074138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3277 [inline]
#0: ffff88801a074138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0xa35/0x1860 kernel/workqueue.c:3385
#1: ffffc9000692fc40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3278 [inline]
#1: ffffc9000692fc40 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0xa70/0x1860 kernel/workqueue.c:3385
#2: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:313
2 locks held by dhcpcd/5259:
#0: ffff888066cb0928 (nlk_cb_mutex-ROUTE){+.+.}-{4:4}, at: netlink_dump+0xe2/0xe10 net/netlink/af_netlink.c:2267
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dumpit+0x92/0x200 net/core/rtnetlink.c:6863
2 locks held by getty/5349:
#0: ffff88823bf900a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90003cbe2e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13a0 drivers/tty/n_tty.c:2211
2 locks held by syz.8.652/10338:
#0: ffff88806bdbd168 (mapping.invalidate_lock#5){++++}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1094 [inline]
#0: ffff88806bdbd168 (mapping.invalidate_lock#5){++++}-{4:4}, at: filemap_fault+0x96a/0x1310 mm/filemap.c:3562
#1: ffff88806bdbcd80 (&ni->file.run_lock#3){++++}-{4:4}, at: attr_data_get_block+0xc5/0x310 fs/ntfs3/attrib.c:964
4 locks held by syz.8.652/10342:
#0: ffff888062a48480 (sb_writers#13){++++}-{0:0}, at: file_start_write include/linux/fs.h:2724 [inline]
#0: ffff888062a48480 (sb_writers#13){++++}-{0:0}, at: vfs_fallocate+0x5f9/0x7f0 fs/open.c:337
#1: ffff88806bdbcf98 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline]
#1: ffff88806bdbcf98 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: ntfs_fallocate+0x2e7/0x1230 fs/ntfs3/file.c:486
#2: ffff88806bdbcce0 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ni_lock fs/ntfs3/ntfs_fs.h:1212 [inline]
#2: ffff88806bdbcce0 (&ni->ni_lock#2/5){+.+.}-{4:4}, at: ntfs_fallocate+0x780/0x1230 fs/ntfs3/file.c:608
#3: ffff88806bdbcd80 (&ni->file.run_lock#3){++++}-{4:4}, at: attr_force_nonresident+0x13f/0x1f0 fs/ntfs3/attrib.c:2769
2 locks held by syz.8.652/10347:
#0: ffff888062a48480 (sb_writers#13){++++}-{0:0}, at: file_start_write include/linux/fs.h:2724 [inline]
#0: ffff888062a48480 (sb_writers#13){++++}-{0:0}, at: vfs_fallocate+0x5f9/0x7f0 fs/open.c:337
#1: ffff88806bdbcf98 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1029 [inline]
#1: ffff88806bdbcf98 (&sb->s_type->i_mutex_key#28){+.+.}-{4:4}, at: ntfs_fallocate+0x2e7/0x1230 fs/ntfs3/file.c:486
2 locks held by syz-executor/11443:
#0: ffffffff8f8aaa58 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffffffff8f8aaa58 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8f8aaa58 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x883/0x1bb0 net/core/rtnetlink.c:4108
2 locks held by syz-executor/11468:
#0: ffffffff8eabeec8 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#0: ffffffff8eabeec8 (&ops->srcu#2){.+.+}-{0:0}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8eabeec8 (&ops->srcu#2){.+.+}-{0:0}, at: rtnl_link_ops_get+0x23/0x250 net/core/rtnetlink.c:570
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x883/0x1bb0 net/core/rtnetlink.c:4108
1 lock held by syz-executor/11484:
#0: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#0: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x883/0x1bb0 net/core/rtnetlink.c:4108
2 locks held by syz-executor/11683:
#0: ffffffff8f347140 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x4f7/0x730 net/core/net_namespace.c:575
#1: ffffffff8f355e78 (rtnl_mutex){+.+.}-{4:4}, at: ip_tunnel_init_net+0x2d7/0x840 net/ipv4/ip_tunnel.c:1146
1 lock held by syz.7.753/11713:
#0: ffff888035b080d0 (&type->s_umount_key#59/1){+.+.}-{4:4}, at: alloc_super+0x28c/0xac0 fs/super.c:345
2 locks held by syz.7.753/11716:
=============================================
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 04/18/2026
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: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
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 11716 Comm: syz.7.753 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:const_folio_flags include/linux/page-flags.h:345 [inline]
RIP: 0010:folio_test_active include/linux/page-flags.h:554 [inline]
RIP: 0010:folio_lru_list include/linux/mm_inline.h:86 [inline]
RIP: 0010:lruvec_add_folio include/linux/mm_inline.h:349 [inline]
RIP: 0010:lru_add+0x4af/0xdb0 mm/swap.c:154
Code: ff eb 1e e8 e3 c1 be ff 4c 8b 64 24 08 eb 12 e8 d7 c1 be ff 48 8b 44 24 18 65 48 01 05 da d0 65 10 48 8b 04 24 42 80 3c 28 00 <74> 08 4c 89 e7 e8 27 cb 25 00 4d 8b 34 24 4c 89 f6 48 83 e6 01 31
RSP: 0000:ffffc90004107928 EFLAGS: 00000246
RAX: 1ffffd4000209699 RBX: ffffea000104b4c0 RCX: 0000000000080000
RDX: ffffc90016721000 RSI: 0000000000004b40 RDI: 0000000000004b41
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff94000209699 R12: ffffea000104b4c8
R13: dffffc0000000000 R14: 0000000000000001 R15: 1ffffd4000209698
FS: 00007fd3fd4bd6c0(0000) GS:ffff88812627d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3f50db000 CR3: 000000006576e000 CR4: 00000000003526f0
Call Trace:
folio_batch_move_lru+0x287/0x4c0 mm/swap.c:172
__folio_batch_add_and_move+0x446/0xa90 mm/swap.c:196
folio_add_lru_vma+0x196/0x210 mm/swap.c:536
map_anon_folio_pte_nopf+0x2ee/0x5e0 mm/memory.c:5301
map_anon_folio_pte_pf+0xbe/0x220 mm/memory.c:5311
do_anonymous_page mm/memory.c:5413 [inline]
do_pte_missing+0x2822/0x2950 mm/memory.c:4548
handle_pte_fault mm/memory.c:6411 [inline]
__handle_mm_fault mm/memory.c:6549 [inline]
handle_mm_fault+0xd0a/0x13c0 mm/memory.c:6718
do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334
handle_page_fault arch/x86/mm/fault.c:1474 [inline]
exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fd3ff143f18
Code: 85 ed 74 3b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 47 0f b6 0c 08 45 84 c9 74 08 <45> 88 0c 00 49 8b 47 10 48 83 c0 01 49 89 47 10 83 e9 01 73 d3 41
RSP: 002b:00007fd3fd4bc470 EFLAGS: 00010202
RAX: 000000000003e000 RBX: 00007fd3fd4bc530 RCX: 0000000000000029
RDX: 0000000000000fff RSI: 0000000000002000 RDI: 00007fd3fd4bc5d0
RBP: 000000000000002b R08: 00007fd3f509d000 R09: 0000000000000046
R10: 000020000003e3c2 R11: 000000000001f1ba R12: 0000000000001801
R13: 00007fd3ff342900 R14: 0000000000000019 R15: 00007fd3fd4bc5d0