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general protection fault, probably for non-canonical address 0xdffffc000000011d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000008e8-0x00000000000008ef]
CPU: 0 PID: 32331 Comm: syz-executor.2 Not tainted 6.5.0-syzkaller-12145-g4a0fc73da97e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:io_sqpoll_wq_cpu_affinity+0x81/0xc0 io_uring/sqpoll.c:433
Code: a8 00 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 0f 0e 1f f7 bb e8 08 00 00 49 03 1c 24 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 f0 0d 1f f7 48 8b 3b 4c 89 f6 e8
RSP: 0000:ffffc9000af17dc8 EFLAGS: 00010206
RAX: 000000000000011d RBX: 00000000000008e8 RCX: ffff88807b190000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: 0000000000000002 R08: ffff888055269813 R09: 1ffff1100aa4d302
R10: dffffc0000000000 R11: ffffed100aa4d303 R12: ffff8880552698a8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888055269800
FS:  00007f726995d6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffceb12eba8 CR3: 0000000026ad4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __io_register_iowq_aff+0x94/0xd0 io_uring/io_uring.c:4207
 io_unregister_iowq_aff io_uring/io_uring.c:4247 [inline]
 __io_uring_register io_uring/io_uring.c:4453 [inline]
 __do_sys_io_uring_register io_uring/io_uring.c:4539 [inline]
 __se_sys_io_uring_register+0xf30/0x1470 io_uring/io_uring.c:4499
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f726ae7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f726995d0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 00007f726af9c120 RCX: 00007f726ae7cae9
RDX: 0000000000000000 RSI: 0000000000000012 RDI: 0000000000000003
RBP: 00007f726aec847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f726af9c120 R15: 00007ffdfd138928
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:io_sqpoll_wq_cpu_affinity+0x81/0xc0 io_uring/sqpoll.c:433
Code: a8 00 00 00 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 0f 0e 1f f7 bb e8 08 00 00 49 03 1c 24 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 f0 0d 1f f7 48 8b 3b 4c 89 f6 e8
RSP: 0000:ffffc9000af17dc8 EFLAGS: 00010206
RAX: 000000000000011d RBX: 00000000000008e8 RCX: ffff88807b190000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: 0000000000000002 R08: ffff888055269813 R09: 1ffff1100aa4d302
R10: dffffc0000000000 R11: ffffed100aa4d303 R12: ffff8880552698a8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888055269800
FS:  00007f726995d6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f79b3975198 CR3: 0000000026ad4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	a8 00                	test   $0x0,%al
   2:	00 00                	add    %al,(%rax)
   4:	4c 89 e0             	mov    %r12,%rax
   7:	48 c1 e8 03          	shr    $0x3,%rax
   b:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  10:	74 08                	je     0x1a
  12:	4c 89 e7             	mov    %r12,%rdi
  15:	e8 0f 0e 1f f7       	call   0xf71f0e29
  1a:	bb e8 08 00 00       	mov    $0x8e8,%ebx
  1f:	49 03 1c 24          	add    (%r12),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 f0 0d 1f f7       	call   0xf71f0e29
  39:	48 8b 3b             	mov    (%rbx),%rdi
  3c:	4c 89 f6             	mov    %r14,%rsi
  3f:	e8                   	.byte 0xe8