INFO: task kcompactd0:1626 blocked for more than 143 seconds.
      Not tainted 5.12.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kcompactd0      state:D stack:22168 pid: 1626 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0xb98/0x1120 kernel/sched/core.c:5147
 schedule+0x14b/0x200 kernel/sched/core.c:5226
 io_schedule+0x83/0x100 kernel/sched/core.c:7215
 wait_on_page_bit_common+0x97a/0x1030 mm/filemap.c:1274
 lock_page include/linux/pagemap.h:610 [inline]
 __unmap_and_move+0x924/0xca0 mm/migrate.c:1050
 unmap_and_move+0x29f/0xd10 mm/migrate.c:1200
 migrate_pages+0x502/0x16f0 mm/migrate.c:1472
 compact_zone+0x2bdc/0x3d50 mm/compaction.c:2365
 kcompactd_do_work mm/compaction.c:2775 [inline]
 kcompactd+0x8df/0x26c0 mm/compaction.c:2870
 kthread+0x39a/0x3c0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

Showing all locks held in the system:
2 locks held by kworker/0:2/8:
 #0: ffff8880b9a34cd8 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1334 [inline]
 #0: ffff8880b9a34cd8 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x144/0x1120 kernel/sched/core.c:5061
 #1: ffff8880b9a1f808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x4b3/0x7a0 kernel/sched/psi.c:863
1 lock held by khungtaskd/1622:
 #0: ffffffff8cd14580 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 arch/x86/pci/mmconfig_64.c:151
1 lock held by kswapd0/2120:
1 lock held by kswapd1/2121:
1 lock held by systemd-journal/4807: