INFO: task syz.7.4717:3720 blocked for more than 143 seconds.
      Not tainted 6.12.0-rc7-syzkaller-00125-gcfaaa7d010d1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.4717      state:D stack:27344 pid:3720  tgid:3717  ppid:3345   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0xe55/0x5740 kernel/sched/core.c:6693
 __schedule_loop kernel/sched/core.c:6770 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6785
 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2591
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
 wait_for_common kernel/sched/completion.c:127 [inline]
 wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
 coredump_wait fs/coredump.c:418 [inline]
 do_coredump+0x82f/0x4160 fs/coredump.c:575
 get_signal+0x237c/0x26d0 kernel/signal.c:2903
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faf8737e719
RSP: 002b:00007faf881c60e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007faf87536060 RCX: 00007faf8737e719
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007faf87536064
RBP: 00007faf87536058 R08: 00007faf881e8080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007faf87536064
R13: 0000000000000000 R14: 00007ffe34601500 R15: 00007ffe346015e8
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #0: ffffffff8ddb7800 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6720
2 locks held by getty/5596:
 #0: ffff88814db740a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz.1.1257/12330:
1 lock held by syz.1.1257/12333:
2 locks held by kworker/u8:39/30742:
1 lock held by syz-executor/446:
4 locks held by syz-executor/3544:
 #0: ffff88803c6e4d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:481
 #1: ffff88803c6e4078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x34c/0x1260 net/bluetooth/hci_sync.c:5193
 #2: ffffffff8fd2b1c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1972 [inline]
 #2: ffffffff8fd2b1c8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2592
 #3: ffffffff8ddc30f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:329
1 lock held by syz.7.4717/3718:
1 lock held by syz-executor/3987:
 #0: ffffffff8fac5768 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
 #0: ffffffff8fac5768 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x38/0x230 drivers/net/tun.c:3517
1 lock held by rm/5894:

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc7-syzkaller-00125-gcfaaa7d010d1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xf0c/0x1240 kernel/hung_task.c:379
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 3718 Comm: syz.7.4717 Not tainted 6.12.0-rc7-syzkaller-00125-gcfaaa7d010d1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:rcu_lockdep_current_cpu_online+0xb/0x150 kernel/rcu/tree.c:4771
Code: ab 92 46 03 e9 6a ff ff ff 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 8b 15 2d d7 90 7e <81> e2 00 00 f0 00 b8 01 00 00 00 75 0a 8b 15 b2 f2 a9 0e 85 d2 75
RSP: 0018:ffffc900044f7060 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc900044f7110 RCX: ffffc9000de31000
RDX: 0000000080000000 RSI: ffffffff8bb13960 RDI: ffffffff8d81db88
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc900044f7128 R14: ffff888069f34228 R15: 0000000000000002
FS:  00007faf881e76c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559ec7119950 CR3: 000000006f23e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
 rcu_read_lock_held+0x27/0x50 kernel/rcu/update.c:349
 xa_head include/linux/xarray.h:1204 [inline]
 xas_start+0x241/0x790 lib/xarray.c:190
 xas_load+0x22/0x5b0 lib/xarray.c:238
 filemap_get_entry+0x10a/0x3c0 mm/filemap.c:1842
 __filemap_get_folio+0x59/0xaf0 mm/filemap.c:1887
 filemap_lock_folio include/linux/pagemap.h:788 [inline]
 filemap_lock_hugetlb_folio include/linux/hugetlb.h:795 [inline]
 hugetlbfs_read_iter+0x3d6/0x8d0 fs/hugetlbfs/inode.c:342
 __kernel_read+0x3f1/0xb50 fs/read_write.c:527
 integrity_kernel_read+0x7f/0xb0 security/integrity/iint.c:28
 ima_calc_file_hash_tfm+0x2c9/0x3e0 security/integrity/ima/ima_crypto.c:480
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline]
 ima_calc_file_hash+0x1ba/0x490 security/integrity/ima/ima_crypto.c:568
 ima_collect_measurement+0x8a7/0xa10 security/integrity/ima/ima_api.c:293
 process_measurement+0x1271/0x2370 security/integrity/ima/ima_main.c:372
 ima_file_mmap+0x1b1/0x1d0 security/integrity/ima/ima_main.c:462
 security_mmap_file+0x8bd/0x990 security/security.c:2979
 vm_mmap_pgoff+0xdb/0x360 mm/util.c:584
 ksys_mmap_pgoff+0x1c8/0x5c0 mm/mmap.c:542
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:86 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:79 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:79
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faf8737e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faf881e7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007faf87535f80 RCX: 00007faf8737e719
RDX: 00004000000000df RSI: 0800000000000002 RDI: 0000000000008a87
RBP: 00007faf873f175e R08: 0000000000000401 R09: 0000000000000000
R10: 0000000000040eb1 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007faf87535f80 R15: 00007ffe346015e8
 </TASK>