INFO: task syz.0.141:7713 blocked for more than 143 seconds.
      Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.141       state:D stack:0     pid:7713  tgid:7696  ppid:6554   task_flags:0x440140 flags:0x00000011
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x13b0/0x2864 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:7058
 __closure_sync+0x160/0x278 lib/closure.c:146
 closure_sync include/linux/closure.h:195 [inline]
 __bch2_wait_on_allocator+0x19c/0x214 fs/bcachefs/alloc_foreground.c:1682
 bch2_wait_on_allocator fs/bcachefs/alloc_foreground.h:315 [inline]
 __bch2_write+0x2874/0x2e78 fs/bcachefs/io_write.c:1593
 bch2_write+0x73c/0x106c fs/bcachefs/io_write.c:1722
 closure_queue include/linux/closure.h:270 [inline]
 closure_call include/linux/closure.h:432 [inline]
 bch2_writepage_do_io fs/bcachefs/fs-io-buffered.c:486 [inline]
 bch2_writepages+0x1e4/0x294 fs/bcachefs/fs-io-buffered.c:668
 do_writepages+0x270/0x468 mm/page-writeback.c:2634
 filemap_fdatawrite_wbc mm/filemap.c:386 [inline]
 __filemap_fdatawrite_range mm/filemap.c:419 [inline]
 file_write_and_wait_range+0x1d0/0x2c4 mm/filemap.c:794
 bch2_fsync+0x14c/0x3f4 fs/bcachefs/fs-io.c:245
 vfs_fsync_range+0x160/0x19c fs/sync.c:187
 generic_write_sync include/linux/fs.h:3042 [inline]
 bch2_write_iter+0x1fdc/0x2300 fs/bcachefs/fs-io-buffered.c:1089
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x540/0xa3c fs/read_write.c:686
 ksys_write+0x120/0x210 fs/read_write.c:738
 __do_sys_write fs/read_write.c:749 [inline]
 __se_sys_write fs/read_write.c:746 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:746
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffff80008f9a9060 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
2 locks held by kworker/u8:3/42:
2 locks held by getty/6312:
 #0: ffff0000d3a740a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff80009bbae2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa4 drivers/tty/n_tty.c:2222
2 locks held by syz.0.141/7713:
 #0: ffff0000cec709b8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x1fc/0x2a0 fs/file.c:1232
 #1: ffff0000d912c428 (sb_writers#19){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:3107 [inline]
 #1: ffff0000d912c428 (sb_writers#19){.+.+}-{0:0}, at: vfs_write+0x24c/0xa3c fs/read_write.c:682

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