INFO: task syz.3.736:7818 blocked in I/O wait fo
INFO: task syz.3.736:7818 blocked in I/O wait for more than 143 seconds.
      Tainted: G             L      syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.736       state:D stack:0     pid:7818  tgid:7817  ppid:4714   task_flags:0x400040 flags:0x04000011
Call trace:
 __switch_to+0x2b0/0x6e0 arch/arm64/kernel/process.c:775 (T)
 context_switch kernel/sched/core.c:5510 [inline]
 __schedule+0x1370/0x2d80 kernel/sched/core.c:7234
 __schedule_loop kernel/sched/core.c:7311 [inline]
 schedule+0x13c/0x20c kernel/sched/core.c:7326
 io_schedule+0x1c/0xe0 kernel/sched/core.c:8154
 folio_wait_bit_common+0x6b8/0xa30 mm/filemap.c:1323
 __folio_lock+0x2c/0x3c mm/filemap.c:1704
 folio_lock include/linux/pagemap.h:1157 [inline]
 migrate_folio_unmap mm/migrate.c:1250 [inline]
 migrate_pages_batch+0xb6c/0x2abc mm/migrate.c:1907
 migrate_pages_sync mm/migrate.c:2051 [inline]
 migrate_pages+0x1e24/0x2a5c mm/migrate.c:2133
 compact_zone+0x2064/0x3c98 mm/compaction.c:2668
 compact_node+0x190/0x3cc mm/compaction.c:2937
 compact_nodes mm/compaction.c:2959 [inline]
 sysctl_compaction_handler+0x10c/0x200 mm/compaction.c:3010
 proc_sys_call_handler+0x2c4/0x48c fs/proc/proc_sysctl.c:600
 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:626
 iter_file_splice_write+0x750/0xd50 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0xec/0x150 fs/splice.c:1159
 splice_direct_to_actor+0x2a0/0x7a8 fs/splice.c:1103
 do_splice_direct_actor+0x140/0x228 fs/splice.c:1202
 do_splice_direct+0x58/0x70 fs/splice.c:1228
 do_sendfile+0x40c/0x6c0 fs/read_write.c:1371
 __do_sys_sendfile64 fs/read_write.c:1426 [inline]
 __se_sys_sendfile64 fs/read_write.c:1418 [inline]
 __arm64_sys_sendfile64+0x138/0x28c fs/read_write.c:1418
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140
 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0x48/0x148 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594

Showing all locks held in the system:
1 lock held by khungtaskd/31:
 #0: ffff800088cf7020 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
 #0: ffff800088cf7020 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
 #0: ffff800088cf7020 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x4c/0x188 kernel/locking/lockdep.c:6775
2 locks held by kworker/u8:2/39:
 #0: ffff0000c478f940 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #0: ffff0000c478f940 ((wq_completion)iou_exit){+.+.}-{0:0}, at: process_scheduled_works+0x734/0x10b8 kernel/workqueue.c:3405
 #1: ffff800090197c40 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
 #1: ffff800090197c40 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_scheduled_works+0x73c/0x10b8 kernel/workqueue.c:3405
2 locks held by pr/ttyAMA-1/41:
2 locks held by getty/4495:
 #0: ffff0000d170a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff8000924cb2e8 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x348/0xf78 drivers/tty/n_tty.c:2211
1 lock held by udevd/5039:
 #0: ffff0000c5d34350 (&disk->open_mutex){+.+.}-{4:4}, at: bdev_open+0xc4/0x880 block/bdev.c:948
1 lock held by syz.3.736/7818:
 #0: ffff0000c92ba450 (sb_writers#4){.+.+}-{0:0}, at: direct_splice_actor+0x54/0x150 fs/splice.c:1158
1 lock held by syz.8.1264/9806:
 #0: ffff0000c5d34350 (&disk->open_mutex){+.+.}-{4:4}, at: sync_bdevs+0x214/0x3d4 block/bdev.c:1297

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