INFO: task syz-executor:9869 blocked for more than 143 seconds.
      Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21400 pid:9869  tgid:9869  ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 v9fs_evict_inode+0x170/0x320
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 shrink_dcache_for_umount+0xa0/0x170
 generic_shutdown_super+0x67/0x2c0
 kill_anon_super+0x3b/0x70
 v9fs_kill_super+0x4c/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2fd7d8ff17
RSP: 002b:00007ffd3efd6e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f2fd7e11c05 RCX: 00007f2fd7d8ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd3efd6f20
RBP: 00007ffd3efd6f20 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd3efd7fb0
R13: 00007f2fd7e11c05 R14: 0000000000032fe0 R15: 00007ffd3efd7ff0
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e139ee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by kworker/u10:5/1090:
 #0: ffff88801f3aa948 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0
 #1: ffffc90007027bc0 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0
2 locks held by getty/5675:
 #0: ffff888021c1f0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900029062f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
1 lock held by syz-executor/9869:
 #0: ffff888033bf80e0 (&type->s_umount_key#88){+.+.}-{4:4}, at: deactivate_super+0xa9/0xe0
2 locks held by syz.3.3913/15948:
4 locks held by syz.3.3913/15951:
3 locks held by syz.0.3914/15950:
2 locks held by dhcpcd/15971:
 #0: ffff888033252258 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x32/0xcd0
 #1: ffffffff8e13f978 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730

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

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 15951 Comm: syz.3.3913 Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:page_table_check_set+0x71/0x730
Code: bd 8d 48 c1 e8 03 80 3c 08 00 74 0c 48 c7 c7 78 34 bd 8d e8 41 ca f4 ff 48 8b 05 62 e8 8e 0b 48 c1 e3 06 48 89 c5 4c 8d 24 18 <49> 83 c4 08 4d 89 e6 49 c1 ee 03 48 b8 00 00 00 00 00 fc ff df 41
RSP: 0018:ffffc900047ef020 EFLAGS: 00000206
RAX: ffffea0000000000 RBX: 00000000004a8f00 RCX: dffffc0000000000
RDX: ffff8881076a5640 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffea0000000000 R08: 0000000000000000 R09: ffffffff822e5b0a
R10: dffffc0000000000 R11: ffffed1021e69679 R12: ffffea00004a8f00
R13: 0000000000000000 R14: ffff88810f34ab00 R15: 0000000000000001
FS:  00007fd8906a36c0(0000) GS:ffff8881a3c24000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000b7f000 CR3: 000000002a7a6000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 set_ptes+0x231/0x240
 __handle_mm_fault+0x3a51/0x5440
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0x764/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 <f3> 48 a5 89 c1 85 c9 75 91 c3 cc cc cc cc 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc900047ef4d8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88812c6e00e8 RCX: 0000000000000b9e
RDX: 0000000000000001 RSI: 0000200000b7f000 RDI: ffff88812c6ea5c8
RBP: ffffc900047ef630 R08: ffff88812c6f02b7 R09: 1ffff110258de056
R10: dffffc0000000000 R11: ffffed10258de057 R12: 1ffff920008fdfbf
R13: 0000200000b74b20 R14: ffffc900047efe08 R15: 00000000000101d0
 _copy_from_iter+0x24c/0x16f0
 tipc_msg_build+0x458/0xcf0
 __tipc_sendstream+0x8ac/0x1290
 tipc_sendstream+0x55/0x70
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd88f78ebe9
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:00007fd8906a3038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd88f9b6090 RCX: 00007fd88f78ebe9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000004
RBP: 00007fd88f811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd88f9b6128 R14: 00007fd88f9b6090 R15: 00007fff3cd13778
 </TASK>
