INFO: task syz.6.1228:15229 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1228 state:D stack:22912 pid:15229 tgid:15228 ppid:10728 task_flags:0x440140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x1553/0x5240 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
io_schedule+0x80/0xe0 kernel/sched/core.c:7832
folio_wait_bit_common+0x6dd/0xbc0 mm/filemap.c:1323
__folio_lock mm/filemap.c:1699 [inline]
folio_lock include/linux/pagemap.h:1170 [inline]
__filemap_get_folio_mpol+0x16d/0xa50 mm/filemap.c:1954
__filemap_get_folio include/linux/pagemap.h:774 [inline]
ntfs_lock_new_page+0x30/0x7b0 fs/ntfs3/frecord.c:1858
ni_read_folio_cmpr+0x63b/0xbb0 fs/ntfs3/frecord.c:1932
ntfs_read_folio+0x29e/0x460 fs/ntfs3/inode.c:693
read_pages+0x373/0x5a0 mm/readahead.c:173
page_cache_ra_unbounded+0x704/0x9b0 mm/readahead.c:304
do_page_cache_ra mm/readahead.c:334 [inline]
force_page_cache_ra+0x271/0x2e0 mm/readahead.c:364
filemap_get_pages+0x47c/0x1ea0 mm/filemap.c:2690
filemap_read+0x44a/0x1240 mm/filemap.c:2800
__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:480 [inline]
ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
ima_calc_file_hash+0x12cf/0x1800 security/integrity/ima/ima_crypto.c:568
ima_collect_measurement+0x491/0x930 security/integrity/ima/ima_api.c:295
process_measurement+0x12d9/0x1c90 security/integrity/ima/ima_main.c:407
ima_file_check+0xe1/0x130 security/integrity/ima/ima_main.c:667
security_file_post_open+0xb3/0x260 security/security.c:2652
do_open fs/namei.c:4673 [inline]
path_openat+0x2e88/0x38a0 fs/namei.c:4830
do_file_open+0x23e/0x4a0 fs/namei.c:4859
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: 0033:0x7fefeae3c799
RSP: 002b:00007fefe908e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fefeb0b5fa0 RCX: 00007fefeae3c799
RDX: 0000000000101042 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007fefeaed2bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fefeb0b6038 R14: 00007fefeb0b5fa0 R15: 00007fffddabc4e8
INFO: task syz.6.1228:15249 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1228 state:D stack:26680 pid:15249 tgid:15228 ppid:10728 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x1553/0x5240 kernel/sched/core.c:6908
__schedule_loop kernel/sched/core.c:6990 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7005
io_schedule+0x80/0xe0 kernel/sched/core.c:7832
folio_wait_bit_common+0x6dd/0xbc0 mm/filemap.c:1323
__folio_lock mm/filemap.c:1699 [inline]
folio_lock include/linux/pagemap.h:1170 [inline]
__filemap_get_folio_mpol+0x16d/0xa50 mm/filemap.c:1954
__filemap_get_folio include/linux/pagemap.h:774 [inline]
ntfs_get_frame_pages+0xc8/0x4b0 fs/ntfs3/file.c:951
ntfs_compress_write+0xfc5/0x1c80 fs/ntfs3/file.c:1104
ntfs_file_write_iter+0x517/0x990 fs/ntfs3/file.c:1275
do_iter_readv_writev+0x62b/0x8d0 fs/read_write.c:-1
vfs_writev+0x345/0x9a0 fs/read_write.c:1059
__se_sys_pwritev2+0x187/0[ 971.303745][ T39] do_pwritev fs/read_write.c:1155 [inline]
__se_sys_pwritev2+0x187/0[ 971.303745][ T39] __do_sys_pwritev2 fs/read_write.c:1213 [inline]
__se_sys_pwritev2+0x187/0[ 971.303745][ T39] __se_sys_pwritev2+0x187/0x2b0 fs/read_write.c:1204
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: 0033:0x7fefeae3c799
RSP: 002b:00007fefe904c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fefeb0b6180 RCX: 00007fefeae3c799
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000004
RBP: 00007fefeaed2bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000000
R13: 00007fefeb0b6218 R14: 00007fefeb0b6180 R15: 00007fffddabc4e8
Showing all locks held in the system:
1 lock held by khungtaskd/39:
#0: ffffffff8ddcd780 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
#0: ffffffff8ddcd780 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:850 [inline]
#0: ffffffff8ddcd780 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6775
5 locks held by kworker/u8:7/812:
#0: ffff88801aee1138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline]
#0: ffff88801aee1138 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358
#1: ffffc9000479fc40 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline]
#1: ffffc9000479fc40 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358
#2: ffffffff8f14d600 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf4/0x800 net/core/net_namespace.c:675
#3: ffff88803e6497b8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_destruct+0x116/0x310 drivers/net/wireguard/device.c:249
#4: ffff88803e648ea0 (&dev->lock){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2784 [inline]
#4: ffff88803e648ea0 (&dev->lock){+.+.}-{4:4}, at: __netif_napi_del include/linux/netdevice.h:2908 [inline]
#4: ffff88803e648ea0 (&dev->lock){+.+.}-{4:4}, at: netif_napi_del include/linux/netdevice.h:2927 [inline]
#4: ffff88803e648ea0 (&dev->lock){+.+.}-{4:4}, at: peer_remove_after_dead+0x119/0x210 drivers/net/wireguard/peer.c:124
2 locks held by kworker/u8:9/1132:
#0: ffff888019c44938 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline]
#0: ffff888019c44938 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358
#1: ffffc90005177c40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline]
#1: ffffc90005177c40 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358
3 locks held by udevd/5162:
2 locks held by dhcpcd/5456:
#0: ffffffff8f13d2f8 (vlan_ioctl_mutex){+.+.}-{4:4}, at: sock_ioctl+0x644/0x7f0 net/socket.c:1337
#1: ffffffff8f15bdb8 (rtnl_mutex){+.+.}-{4:4}, at: vlan_ioctl_handler+0xf0/0x630 net/8021q/vlan.c:579
2 locks held by getty/5547:
#0: ffff88803730f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90003e832e0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x462/0x13c0 drivers/tty/n_tty.c:2211
3 locks held by kworker/1:3/5806:
#0: ffff888019c03938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline]
#0: ffff888019c03938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358
#1: ffffc90004a9fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline]
#1: ffffc90004a9fc40 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358
#2: ffff888039262260 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x222/0x3e0 drivers/net/netdevsim/fib.c:1490
3 locks held by kworker/0:6/5882:
#0: ffff888019c03938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline]
#0: ffff888019c03938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358
#1: ffffc90005147c40 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline]
#1: ffffc90005147c40 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358
#2: ffffffff8f15bdb8 (rtnl_mutex){+.+.}-{4:4}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
3 locks held by kworker/u8:12/13443:
#0: ffff888031f17938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3250 [inline]
#0: ffff888031f17938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x9ea/0x1830 kernel/workqueue.c:3358
#1: ffffc9000ff7fc40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3251 [inline]
#1: ffffc9000ff7fc40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa25/0x1830 kernel/workqueue.c:3358
#2: ffffffff8f15bdb8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#2: ffffffff8f15bdb8 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x124/0x1680 net/ipv6/addrconf.c:4198
2 locks held by syz.6.1228/15229:
#0: ffff8880206b8e58 (&ima_iint_mutex_key[depth]){+.+.}-{4:4}, at: process_measurement+0x7fd/0x1c90 security/integrity/ima/ima_main.c:301
#1: ffff888040eef948 (mapping.invalidate_lock#15){.+.+}-{4:4}, at: filemap_invalidate_lock_shared include/linux/fs.h:1093 [inline]
#1: ffff888040eef948 (mapping.invalidate_lock#15){.+.+}-{4:4}, at: do_page_cache_ra mm/readahead.c:333 [inline]
#1: ffff888040eef948 (mapping.invalidate_lock#15){.+.+}-{4:4}, at: force_page_cache_ra+0x263/0x2e0 mm/readahead.c:364
2 locks held by syz.6.1228/15249:
#0: ffff88803b088480 (sb_writers#30){++++}-{0:0}, at: file_start_write include/linux/fs.h:2710 [inline]
#0: ffff88803b088480 (sb_writers#30){++++}-{0:0}, at: vfs_writev+0x2b0/0x9a0 fs/read_write.c:1057
#1: ffff888040eef778 (&sb->s_type->i_mutex_key#39){++++}-{4:4}, at: inode_trylock include/linux/fs.h:1058 [inline]
#1: ffff888040eef778 (&sb->s_type->i_mutex_key#39){++++}-{4:4}, at: ntfs_file_write_iter+0x76/0x990 fs/ntfs3/file.c:1238
10 locks held by syz-executor/16380:
2 locks held by syz-executor/16804:
2 locks held by syz-executor/16890:
#0: ffffffff8f14d600 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x4f7/0x730 net/core/net_namespace.c:577
#1: ffffffff8f15bdb8 (rtnl_mutex){+.+.}-{4:4}, at: ip_tunnel_init_net+0x2d7/0x840 net/ipv4/ip_tunnel.c:1146
1 lock held by syz.6.1440/16906:
1 lock held by modprobe/16915:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 39 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5162 Comm: udevd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:37 [inline]
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0x25/0x3d0 kernel/locking/lockdep.c:5879
Code: 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 30 49 89 f5 49 89 fe 65 48 8b 05 10 f0 ad 10 48 89 44 24 28 <0f> 1f 44 00 00 65 8b 05 13 f0 ad 10 83 f8 08 0f 83 56 02 00 00 89
RSP: 0018:ffffc90003fbfc00 EFLAGS: 00000286
RAX: 02a264170dbc5d00 RBX: ffffffff82645fec RCX: ffff88803940bd00
RDX: 0000000000000000 RSI: ffffffff82645fec RDI: ffffffff8ddcd780
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1004bb5fc3 R12: dffffc0000000000
R13: ffffffff82645fec R14: ffffffff8ddcd780 R15: ffff888025dad870
FS: 00007f4f63924880(0000) GS:ffff88812633d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff401e056b8 CR3: 00000000394f6000 CR4: 00000000003526f0
Call Trace:
rcu_lock_release include/linux/rcupdate.h:322 [inline]
rcu_read_unlock include/linux/rcupdate.h:881 [inline]
class_rcu_destructor include/linux/rcupdate.h:1193 [inline]
kernfs_root+0x1e5/0x230 fs/kernfs/kernfs-internal.h:80
kernfs_active fs/kernfs/dir.c:39 [inline]
kernfs_dir_pos+0x2ca/0x460 fs/kernfs/dir.c:1860
kernfs_dir_next_pos fs/kernfs/dir.c:1873 [inline]
kernfs_fop_readdir+0x5b2/0x8d0 fs/kernfs/dir.c:1905
iterate_dir+0x3a5/0x580 fs/readdir.c:108
__do_sys_getdents64 fs/readdir.c:412 [inline]
__se_sys_getdents64+0xf1/0x280 fs/readdir.c:397
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: 0033:0x7f4f63a5bd23
Code: 8b 05 d9 00 10 00 64 c7 00 16 00 00 00 31 c0 eb b0 66 0f 1f 44 00 00 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 a1 00 10 00 f7 d8
RSP: 002b:00007ffe2e0078a8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 0000562657ee04b0 RCX: 00007f4f63a5bd23
RDX: 0000000000008000 RSI: 0000562657ee04e0 RDI: 000000000000000d
RBP: 0000562657ee04b4 R08: 00007f4f63b5cac0 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000293 R12: 0000562657ee04e0
R13: fffffffffffffe68 R14: 0000000000000002 R15: 00007ffe2e007b50