INFO: task syz.3.518:8600 blocked for more than 143 seconds.
      Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.518       state:D stack:0     pid:8600  tgid:8599  ppid:6389   flags:0x0000000d
Call trace:
 __switch_to+0x314/0x560 arch/arm64/kernel/process.c:553
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x14ac/0x24d8 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0xbc/0x238 kernel/sched/core.c:6837
 __closure_sync+0x198/0x29c lib/closure.c:146
 closure_sync include/linux/closure.h:194 [inline]
 __bch2_write+0x41d8/0x47f4 fs/bcachefs/io_write.c:1506
 bch2_write+0x8bc/0x153c fs/bcachefs/io_write.c:1634
 closure_queue include/linux/closure.h:269 [inline]
 closure_call include/linux/closure.h:425 [inline]
 bch2_writepage_do_io fs/bcachefs/fs-io-buffered.c:460 [inline]
 __bch2_writepage+0xf24/0x1ea0 fs/bcachefs/fs-io-buffered.c:607
 write_cache_pages+0xc8/0x20c mm/page-writeback.c:2613
 bch2_writepages+0x13c/0x304 fs/bcachefs/fs-io-buffered.c:650
 do_writepages+0x2f8/0x7c4 mm/page-writeback.c:2656
 filemap_fdatawrite_wbc+0x124/0x174 mm/filemap.c:397
 __filemap_fdatawrite_range mm/filemap.c:430 [inline]
 file_write_and_wait_range+0x178/0x260 mm/filemap.c:788
 bch2_fsync+0x94/0x144 fs/bcachefs/fs-io.c:197
 vfs_fsync_range+0x168/0x188 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2794 [inline]
 bch2_buffered_write fs/bcachefs/fs-io-buffered.c:1128 [inline]
 bch2_write_iter+0x2990/0x2d24 fs/bcachefs/fs-io-buffered.c:1136
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0x8f8/0xc38 fs/read_write.c:590
 ksys_write+0x15c/0x26c fs/read_write.c:643
 __do_sys_write fs/read_write.c:655 [inline]
 __se_sys_write fs/read_write.c:652 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:652
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffff80008f4b7be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:328
3 locks held by kworker/u8:3/43:
 #0: ffff0000c20de148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x624/0x15b8 kernel/workqueue.c:3222
 #1: ffff800094897c20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6a0/0x15b8 kernel/workqueue.c:3222
 #2: ffff0000f09a00e0 (&type->s_umount_key#69){++++}-{3:3}, at: super_trylock_shared+0x28/0xe4 fs/super.c:562
1 lock held by klogd/5983:
2 locks held by getty/6137:
 #0: ffff0000d29ba0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff8000980ee2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41c/0x1228 drivers/tty/n_tty.c:2211
2 locks held by syz.3.518/8600:
 #0: ffff0000d6631248 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x218/0x2a4 fs/file.c:1191
 #1: ffff0000f09a0420 (sb_writers#17){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2854 [inline]
 #1: ffff0000f09a0420 (sb_writers#17){.+.+}-{0:0}, at: vfs_write+0x2e8/0xc38 fs/read_write.c:586

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