INFO: task bch-reclaim/loo:7004 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc4-syzkaller-00286-gc435a4f487e8-dirty #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:bch-reclaim/loo state:D stack:22696 pid:7004  tgid:7004  ppid:2      task_flags:0x200040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x16f5/0x4d00
 schedule+0x165/0x360
 schedule_preempt_disabled+0x13/0x30
 __mutex_lock+0x724/0xe80
 bch2_journal_reclaim_thread+0x16b/0x4f0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/34:
 #0: ffffffff8e13ee20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
2 locks held by udevd/5262:
2 locks held by getty/5641:
 #0: ffff88801fbf80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
 #1: ffffc900025c62f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
6 locks held by syz-executor/6747:
 #0: ffff8881268860e0 (&type->s_umount_key#49){++++}-{4:4}, at: deactivate_super+0xa9/0xe0
 #1: ffff88803ab00278 (&c->state_lock){+.+.}-{4:4}, at: __bch2_fs_stop+0xf8/0x900
 #2: ffff88803ab4af68 (&j->reclaim_lock){+.+.}-{4:4}, at: journal_flush_done+0x86/0x810
 #3: ffff88803ab04398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7f4/0xd80
 #4: ffff88803ab04398 (&c->btree_trans_barrier){.+.+}-{0:0}, at: bch2_btree_key_cache_journal_flush+0x105/0xd30
 #5: ffff88803ab26710 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x542/0x1de0
1 lock held by bch-reclaim/loo/7004:
 #0: ffff88803ab4af68 (&j->reclaim_lock){+.+.}-{4:4}, at: bch2_journal_reclaim_thread+0x16b/0x4f0
1 lock held by syz.4.576/10696:
 #0: ffff8881268860e0 (&type->s_umount_key#49){++++}-{4:4}, at: super_lock+0x2a9/0x3b0
2 locks held by syz-executor/11044:
5 locks held by syz.0.670/12120:
2 locks held by syz.7.673/12125:
 #0: ffffffff8f510708 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x331/0x710
 #1: ffffffff8e144938 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x2f6/0x730

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

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted 6.16.0-rc4-syzkaller-00286-gc435a4f487e8-dirty #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+0xfee/0x1030
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15 Comm: ksoftirqd/0 Not tainted 6.16.0-rc4-syzkaller-00286-gc435a4f487e8-dirty #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:_raw_spin_unlock_irqrestore+0xa8/0x110
Code: 74 05 e8 5b 35 5e f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> e3 1e 27 f6 65 8b 05 9c 8a 33 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc900001279e0 EFLAGS: 00000206
RAX: 3ad58ef6c2d8e900 RBX: 0000000000000a06 RCX: 3ad58ef6c2d8e900
RDX: 0000000000000000 RSI: ffffffff8d982fb6 RDI: 0000000000000001
RBP: ffffc90000127a78 R08: ffffffff8fa115f7 R09: 1ffffffff1f422be
R10: dffffc0000000000 R11: fffffbfff1f422bf R12: dffffc0000000000
R13: ffff88802037acc8 R14: ffff88801ea5c000 R15: 1ffff92000024f3c
FS:  0000000000000000(0000) GS:ffff8880b864d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c4217ff CR3: 000000010a3a2000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 mq_flush_data_end_io+0x367/0x4e0
 __blk_mq_end_request+0x426/0x600
 blk_done_softirq+0x10a/0x160
 handle_softirqs+0x286/0x870
 run_ksoftirqd+0x9b/0x100
 smpboot_thread_fn+0x542/0xa60
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
