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WARNING: CPU: 0 PID: 10278 at include/linux/cpumask.h:137 rcu_read_unlock include/linux/rcupdate.h:703 [inline]
WARNING: CPU: 0 PID: 10278 at include/linux/cpumask.h:137 ttwu_stat kernel/sched/core.c:2916 [inline]
WARNING: CPU: 0 PID: 10278 at include/linux/cpumask.h:137 try_to_wake_up+0xf72/0x13b0 kernel/sched/core.c:3459
Modules linked in:
CPU: 0 PID: 10278 Comm: io_wq_manager Not tainted 5.11.0-rc3-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 7c a0 0b 00 0f 84 f1 00 00 00 e8 c6 24 11 00 48 c7 c6 a5 e8 4e 81 48 c7 c7 20 39 37 8b e8 c3 dc 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:ffffc90001187d50 EFLAGS: 00010002
RAX: dffffc0000000000 RBX: 1ffff92000230faf RCX: ffff88806209c3b8
RDX: 1ffff1100c413876 RSI: ffffffff83beaa1b RDI: 0000000000000003
RBP: ffff88806209c000 R08: 0000000000000040 R09: ffffffff8d03a78f
R10: ffffffff83bea9d8 R11: 0000000000000000 R12: 0000000000000287
R13: ffff88806209c8a8 R14: 0000000000000008 R15: ffff88806209c3b0
FS:  0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe0157a7000 CR3: 0000000060e61000 CR4: 0000000000350ef0
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