INFO: task hung in TXN_SLEEP_DROP

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-5.15	INFO: task hung in TXN_SLEEP_DROP_LOCK (2)	1				1	185d	185d	0/3	auto-obsoleted due to no activity on 2026/01/23 13:59
linux-5.15	INFO: task hung in TXN_SLEEP_DROP_LOCK	1				2	578d	597d	0/3	auto-obsoleted due to no activity on 2024/12/27 03:10

INFO: task kworker/u8:22:5948 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:22   state:D stack:0     pid:5948  tgid:5948  ppid:2      task_flags:0x4208060 flags:0x00000010
Workqueue: writeback wb_workfn (flush-7:1)
Call trace:
 __switch_to+0x418/0x87c arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5256 [inline]
 __schedule+0x1250/0x2a7c kernel/sched/core.c:6863
 __schedule_loop kernel/sched/core.c:6945 [inline]
 schedule+0xb4/0x230 kernel/sched/core.c:6960
 io_schedule+0x84/0xf4 kernel/sched/core.c:7789
 TXN_SLEEP_DROP_LOCK+0x114/0x1a0 fs/jfs/jfs_txnmgr.c:125
 txBegin+0x108/0x590 fs/jfs/jfs_txnmgr.c:-1
 jfs_commit_inode+0x188/0x498 fs/jfs/inode.c:107
 jfs_write_inode+0x128/0x1f8 fs/jfs/inode.c:138
 write_inode fs/fs-writeback.c:1582 [inline]
 __writeback_single_inode+0x6b0/0x16b8 fs/fs-writeback.c:1802
 writeback_sb_inodes+0x73c/0x16b4 fs/fs-writeback.c:2030
 __writeback_inodes_wb+0xec/0x228 fs/fs-writeback.c:2107
 wb_writeback+0x3c8/0xd70 fs/fs-writeback.c:2218
 wb_check_old_data_flush fs/fs-writeback.c:2322 [inline]
 wb_do_writeback fs/fs-writeback.c:2375 [inline]
 wb_workfn+0xa08/0xdc0 fs/fs-writeback.c:2403
 process_one_work+0x7c0/0x1558 kernel/workqueue.c:3257
 process_scheduled_works kernel/workqueue.c:3340 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3421
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844

Showing all locks held in the system:
1 lock held by khungtaskd/32:
 #0: ffff80008fa5b520 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
2 locks held by pr/ttyAMA-1/43:
3 locks held by kworker/u8:22/5948:
 #0: ffff0000c1ff3148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x63c/0x1558 kernel/workqueue.c:3231
 #1: ffff8000a4417be0 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x6d0/0x1558 kernel/workqueue.c:3231
 #2: ffff0000e222c0e0 (&type->s_umount_key#89){.+.+}-{4:4}, at: super_trylock_shared+0x24/0xdc fs/super.c:563
1 lock held by klogd/6204:
2 locks held by getty/6357:
 #0: ffff0000d5f350a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800099f1e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfc8 drivers/tty/n_tty.c:2211
4 locks held by syz.1.38/6846:

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