------------[ cut here ]------------
WARNING: CPU: 1 PID: 1qemu-system-x86_64: warning: guest updated active QH
Modules linked in:
CPU: 1 PID: 11115 Comm: io_wq_manager Not tainted 5.11.0-rc1-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:137 [inline]
RIP: 0010:cpumask_check include/linux/cpumask.h:144 [inline]
RIP: 0010:cpumask_check include/linux/cpumask.h:142 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:373 [inline]
RIP: 0010:is_cpu_allowed kernel/sched/core.c:1799 [inline]
RIP: 0010:select_task_rq kernel/sched/core.c:2822 [inline]
RIP: 0010:try_to_wake_up+0xf72/0x13b0 kernel/sched/core.c:3439
Code: 80 3d f6 87 8c 0b 00 0f 84 f1 00 00 00 e8 96 14 11 00 48 c7 c6 85 b2 4e 81 48 c7 c7 60 38 36 8b e8 d3 d3 09 00 e9 43 f9 ff ff <0f> 0b e9 23 f4 ff ff 4c 89 ff 48 89 4c 24 08 e8 5a 35 ff ff 48 8b
RSP: 0018:ffffc90001ec7d50 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 1ffff920003d8faf RCX: ffff8880735a4738
RDX: 1ffff1100e6b48e6 RSI: ffffffff83bbec8b RDI: 0000000000000003
RBP: ffff8880735a4380 R08: 0000000000000040 R09: ffffffff8cef7b4f
R10: ffffffff83bbec48 R11: 0000000000000000 R12: 0000000000000206
R13: ffff8880735a4c28 R14: 0000000000000008 R15: ffff8880735a4730
FS:  0000000000000000(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000008a0d10 CR3: 000000005abf6000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 create_io_worker+0x590/0x8d0 fs/io-wq.c:713
 io_wq_manager+0x16b/0xb80 fs/io-wq.c:772
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296