------------[ cut here ]------------
WARNING: CPU: 0 PID: 5391 at include/linux/cpumask.h:135 cpu_max_bits_warn include/linux/cpumask.h:135 [inline]
WARNING: CPU: 0 PID: 5391 at include/linux/cpumask.h:135 cpumask_check include/linux/cpumask.h:142 [inline]
WARNING: CPU: 0 PID: 5391 at include/linux/cpumask.h:135 cpumask_test_cpu include/linux/cpumask.h:562 [inline]
WARNING: CPU: 0 PID: 5391 at include/linux/cpumask.h:135 io_sq_offload_create+0xd2f/0xfd0 io_uring/sqpoll.c:469
Modules linked in:
CPU: 0 UID: 0 PID: 5391 Comm: syz.2.31 Not tainted 6.11.0-syzkaller-02520-gadfc3ded5c33 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:cpu_max_bits_warn include/linux/cpumask.h:135 [inline]
RIP: 0010:cpumask_check include/linux/cpumask.h:142 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:562 [inline]
RIP: 0010:io_sq_offload_create+0xd2f/0xfd0 io_uring/sqpoll.c:469
Code: 42 f6 e9 57 f4 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c a2 f3 ff ff 48 89 df e8 5c 19 42 f6 e9 95 f3 ff ff e8 b2 d4 da f5 90 <0f> 0b 90 e9 f3 fc ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 4c
RSP: 0018:ffffc90003b77c20 EFLAGS: 00010283
RAX: ffffffff8bb8d1ee RBX: ffffc90003b77dec RCX: 0000000000040000
RDX: ffffc9000938a000 RSI: 0000000000002b7f RDI: 0000000000002b80
RBP: ffffc90003b77d20 R08: ffffffff8bb8cedb R09: 1ffffffff2030c95
R10: dffffc0000000000 R11: fffffbfff2030c96 R12: ffff88802f190000
R13: 0000000000010000 R14: 1ffff9200076ef90 R15: ffffc90003b77ca0
FS:  0000000000000000(0000) GS:ffff8880b8800000(0063) knlGS:00000000f5716b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7455008 CR3: 0000000064ffa000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 io_uring_create+0x792/0x1360 io_uring/io_uring.c:3617
 io_uring_setup io_uring/io_uring.c:3726 [inline]
 __do_sys_io_uring_setup io_uring/io_uring.c:3753 [inline]
 __se_sys_io_uring_setup+0x2ba/0x330 io_uring/io_uring.c:3747
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf742d579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f571656c EFLAGS: 00000206 ORIG_RAX: 00000000000001a9
RAX: ffffffffffffffda RBX: 0000000000006501 RCX: 0000000020001300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	90                   	nop
  31:	90                   	nop
  32:	90                   	nop
  33:	90                   	nop
  34:	90                   	nop
  35:	90                   	nop
  36:	90                   	nop
  37:	90                   	nop
  38:	90                   	nop
  39:	90                   	nop
  3a:	90                   	nop
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop