INFO: task syz-executor:5790 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21448 pid:5790 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5380 [inline]
__schedule+0x14d2/0x44d0 kernel/sched/core.c:6699
schedule+0xbd/0x170 kernel/sched/core.c:6773
io_schedule+0x80/0xd0 kernel/sched/core.c:9022
folio_wait_bit_common+0x6eb/0xf70 mm/filemap.c:1329
__filemap_get_folio+0xbc/0xbc0 mm/filemap.c:1910
truncate_inode_pages_range+0x40a/0xf00 mm/truncate.c:376
evict+0x499/0x870 fs/inode.c:707
dispose_list fs/inode.c:738 [inline]
evict_inodes+0x5fe/0x690 fs/inode.c:792
generic_shutdown_super+0x97/0x2b0 fs/super.c:672
kill_block_super+0x44/0x90 fs/super.c:1660
deactivate_locked_super+0x97/0x100 fs/super.c:481
cleanup_mnt+0x429/0x4c0 fs/namespace.c:1250
task_work_run+0x1ce/0x250 kernel/task_work.c:239
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f19cb78ff17
RSP: 002b:00007ffceb5acda8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f19cb811c05 RCX: 00007f19cb78ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffceb5ace60
RBP: 00007ffceb5ace60 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffceb5adef0
R13: 00007f19cb811c05 R14: 00000000000321e2 R15: 00007ffceb5adf30
Showing all locks held in the system:
3 locks held by kworker/0:0/8:
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: __schedule+0x20ee/0x44d0 kernel/sched/core.c:6694
#2: ffff888041564d60 (&r->consumer_lock#2){+.+.}-{2:2}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
#2: ffff888041564d60 (&r->consumer_lock#2){+.+.}-{2:2}, at: ptr_ring_consume_bh include/linux/ptr_ring.h:365 [inline]
#2: ffff888041564d60 (&r->consumer_lock#2){+.+.}-{2:2}, at: wg_packet_encrypt_worker+0x11f1/0x1520 drivers/net/wireguard/send.c:293
1 lock held by khungtaskd/29:
#0: ffffffff8cd2fbe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8cd2fbe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8cd2fbe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
2 locks held by getty/5554:
#0: ffff88802ca6b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x425/0x1380 drivers/tty/n_tty.c:2217
1 lock held by syz-executor/5792:
#0: ffff88802f6b60e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802f6b60e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802f6b60e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/5790:
#0: ffff88807c2440e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807c2440e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807c2440e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
2 locks held by kworker/1:6/5851:
3 locks held by kworker/1:9/5882:
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#0: ffff888017870938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#1: ffffc90004aefd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2609 [inline]
#1: ffffc90004aefd00 ((work_completion)(&data->fib_event_work)){+.+.}-{0:0}, at: process_scheduled_works+0x957/0x15b0 kernel/workqueue.c:2711
#2: ffff888025007240 (&data->fib_lock){+.+.}-{3:3}, at: nsim_fib_event_work+0x26c/0x3170 drivers/net/netdevsim/fib.c:1491
1 lock held by syz-executor/6268:
#0: ffff88802d19a0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802d19a0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802d19a0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/6463:
#0: ffff88807e7cc0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807e7cc0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807e7cc0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/7106:
#0: ffff88802a4ca0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802a4ca0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802a4ca0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/7574:
#0: ffff88807e4020e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807e4020e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807e4020e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/7778:
#0: ffff88804e77e0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88804e77e0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88804e77e0e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/7994:
#0: ffff88802f2700e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88802f2700e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88802f2700e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
1 lock held by syz-executor/8112:
#0: ffff8880415300e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880415300e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880415300e0 (&type->s_umount_key#113){+.+.}-{3:3}, at: deactivate_super+0xa4/0xe0 fs/super.c:513
5 locks held by syz-executor/8528:
#0: ffff888073f0ce70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:521 [inline]
#0: ffff888073f0ce70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x212/0x510 net/bluetooth/hci_core.c:2709
#1: ffff888073f0c0b8 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x4c9/0xfb0 net/bluetooth/hci_sync.c:5259
#2: ffffffff8e129a48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1982 [inline]
#2: ffffffff8e129a48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa1/0x220 net/bluetooth/hci_conn.c:2540
#3: ffff88807d408b38 (&conn->lock#2){+.+.}-{3:3}, at: l2cap_conn_del+0x70/0x660 net/bluetooth/l2cap_core.c:1762
#4: ffffffff8cd35bb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#4: ffffffff8cd35bb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x448/0x830 kernel/rcu/tree_exp.h:1004
3 locks held by syz-executor/8634:
#0: ffff888073f08e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:521 [inline]
#0: ffff888073f08e70 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x212/0x510 net/bluetooth/hci_core.c:2709
#1: ffff888073f080b8 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x4c9/0xfb0 net/bluetooth/hci_sync.c:5259
#2: ffffffff8e129a48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1982 [inline]
#2: ffffffff8e129a48 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa1/0x220 net/bluetooth/hci_conn.c:2540
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
nmi_cpu_backtrace+0x39b/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf41/0xf80 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5151 Comm: klogd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:xstate_op_valid arch/x86/kernel/fpu/xstate.c:1421 [inline]
RIP: 0010:xfd_validate_state+0x58/0x150 arch/x86/kernel/fpu/xstate.c:1465
Code: e8 5d 87 3c 09 65 4c 8b 3d 55 f7 d0 7e 4d 8d 66 18 4c 89 e0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 e7 e8 cc 4d ab 00 4d 8b 24 24 <4c> 89 e7 4c 89 fe e8 8d 09 54 00 4d 39 fc 75 0a e8 73 07 54 00 e9
RSP: 0018:ffffc90003277e50 EFLAGS: 00000046
RAX: 1ffff1100faf0ab3 RBX: 0000000000000007 RCX: c9c41387bc557900
RDX: 0000000000000000 RSI: ffffffff8aa59bc0 RDI: ffffffff8afc7040
RBP: dffffc0000000000 R08: ffff88807d783c07 R09: 1ffff1100faf0780
R10: dffffc0000000000 R11: ffffed100faf0781 R12: 0000000000000000
R13: 0000000000000001 R14: ffff88807d785580 R15: 0000000000000000
FS: 00007f664a9c7c80(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f78bf954feb CR3: 000000007d653000 CR4: 00000000003506e0
Call Trace:
os_xrstor arch/x86/kernel/fpu/xstate.h:210 [inline]
restore_fpregs_from_fpstate+0x55/0x140 arch/x86/kernel/fpu/core.c:181
fpregs_restore_userregs arch/x86/kernel/fpu/context.h:74 [inline]
switch_fpu_return+0xdb/0x180 arch/x86/kernel/fpu/core.c:787
arch_exit_to_user_mode_prepare arch/x86/include/asm/entry-common.h:58 [inline]
exit_to_user_mode_prepare+0xd5/0x140 kernel/entry/common.c:212
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f664ab91a37
Code: 73 01 c3 48 8b 0d c1 f3 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 f3 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffc14badc48 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: 00000000000003ec RBX: 00007f664ad31490 RCX: 00007f664ab91a37
RDX: 00000000000003ff RSI: 00007f664ad31490 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f664ad31490
R13: 00007f664ad0edfe R14: 00007f664ad3150e R15: 00007f664ad3150e