BUG: sleeping function called from invalid context at mm/util.c:761 in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1661, name: kcompactd0 1 lock held by kcompactd0/1661: #0: ffff88801aa87d70 (&mapping->private_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:359 [inline] #0: ffff88801aa87d70 (&mapping->private_lock){+.+.}-{2:2}, at: __buffer_migrate_page+0x3a8/0xa80 mm/migrate.c:722 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 1 PID: 1661 Comm: kcompactd0 Not tainted 5.14.0-rc2-next-20210722-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 ___might_sleep.cold+0x1f3/0x239 kernel/sched/core.c:9182 folio_copy+0x10c/0x1a0 mm/util.c:761 folio_migrate_copy+0x19/0x30 mm/migrate.c:619 __buffer_migrate_page+0x820/0xa80 mm/migrate.c:757 move_to_new_page+0x339/0xf00 mm/migrate.c:904 __unmap_and_move mm/migrate.c:1069 [inline] unmap_and_move mm/migrate.c:1210 [inline] migrate_pages+0x2867/0x3890 mm/migrate.c:1487 compact_zone+0x1abb/0x3860 mm/compaction.c:2393 kcompactd_do_work+0x2c9/0x730 mm/compaction.c:2808 kcompactd+0x262/0xd10 mm/compaction.c:2903 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 BUG: sleeping function called from invalid context at mm/util.c:761 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 1661, name: kcompactd0 3 locks held by kcompactd0/1661: #0: ffff88803af7ac90 (&mapping->private_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:359 [inline] #0: ffff88803af7ac90 (&mapping->private_lock){+.+.}-{2:2}, at: aio_migratepage+0x48/0xa00 fs/aio.c:394 #1: ffff88802c42b0e8 (&ctx->ring_lock){+.+.}-{3:3}, at: aio_migratepage+0x8e/0xa00 fs/aio.c:405 #2: ffff88802c42b1a0 (&ctx->completion_lock){....}-{2:2}, at: aio_migratepage+0x3df/0xa00 fs/aio.c:435 irq event stamp: 76492 hardirqs last enabled at (76491): [] folio_migrate_mapping+0xcd1/0x1920 mm/migrate.c:499 hardirqs last disabled at (76492): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (76492): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:159 softirqs last enabled at (73052): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last enabled at (73052): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 softirqs last disabled at (73035): [] invoke_softirq kernel/softirq.c:432 [inline] softirqs last disabled at (73035): [] __irq_exit_rcu+0x16e/0x1c0 kernel/softirq.c:636 Preemption disabled at: [<0000000000000000>] 0x0 CPU: 0 PID: 1661 Comm: kcompactd0 Tainted: G W 5.14.0-rc2-next-20210722-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 ___might_sleep.cold+0x1f3/0x239 kernel/sched/core.c:9182 folio_copy+0x10c/0x1a0 mm/util.c:761 folio_migrate_copy+0x19/0x30 mm/migrate.c:619 aio_migratepage+0x3f0/0xa00 fs/aio.c:436 move_to_new_page+0x339/0xf00 mm/migrate.c:904 __unmap_and_move mm/migrate.c:1069 [inline] unmap_and_move mm/migrate.c:1210 [inline] migrate_pages+0x2867/0x3890 mm/migrate.c:1487 compact_zone+0x1abb/0x3860 mm/compaction.c:2393 kcompactd_do_work+0x2c9/0x730 mm/compaction.c:2808 kcompactd+0x262/0xd10 mm/compaction.c:2903 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295