general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 3683 Comm: iou-wrk-3682 Not tainted 5.18.0-rc6-next-20220512-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid+0x47/0xa0 lib/list_debug.c:26
Code: fa 48 c1 ea 03 80 3c 02 00 75 50 49 8b 54 24 08 48 39 f2 0f 85 56 73 43 05 48 b8 00 00 00 00 00 fc ff df 48 89 f2 48 c1 ea 03 <80> 3c 02 00 75 3a 48 8b 16 4c 39 e2 0f 85 5b 73 43 05 48 39 f5 0f
RSP: 0018:ffffc90002fd7ae8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888023ed0000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801ef405c8
RBP: ffff888023ed0000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81f05205 R11: 0000000000000000 R12: ffff88801ef405c0
R13: ffff88801ef405c8 R14: ffff88807a30f1e0 R15: ffff888023ed0020
FS:  000055555604c300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2aed5d7b08 CR3: 0000000023ed5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __list_add include/linux/list.h:69 [inline]
 list_add_tail include/linux/list.h:102 [inline]
 list_move_tail include/linux/list.h:230 [inline]
 io_add_buffers fs/io_uring.c:5596 [inline]
 io_provide_buffers fs/io_uring.c:5655 [inline]
 io_issue_sqe+0x2b72/0xa140 fs/io_uring.c:8174
 io_wq_submit_work+0x22a/0x600 fs/io_uring.c:8286
 io_worker_handle_work+0xb1c/0x1ab0 fs/io-wq.c:597
 io_wqe_worker+0x637/0xdb0 fs/io-wq.c:644
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:297
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__list_add_valid+0x47/0xa0 lib/list_debug.c:26
Code: fa 48 c1 ea 03 80 3c 02 00 75 50 49 8b 54 24 08 48 39 f2 0f 85 56 73 43 05 48 b8 00 00 00 00 00 fc ff df 48 89 f2 48 c1 ea 03 <80> 3c 02 00 75 3a 48 8b 16 4c 39 e2 0f 85 5b 73 43 05 48 39 f5 0f
RSP: 0018:ffffc90002fd7ae8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888023ed0000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88801ef405c8
RBP: ffff888023ed0000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff81f05205 R11: 0000000000000000 R12: ffff88801ef405c0
R13: ffff88801ef405c8 R14: ffff88807a30f1e0 R15: ffff888023ed0020
FS:  000055555604c300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2aed5d7b08 CR3: 0000000023ed5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	fa                   	cli
   1:	48 c1 ea 03          	shr    $0x3,%rdx
   5:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1)
   9:	75 50                	jne    0x5b
   b:	49 8b 54 24 08       	mov    0x8(%r12),%rdx
  10:	48 39 f2             	cmp    %rsi,%rdx
  13:	0f 85 56 73 43 05    	jne    0x543736f
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 f2             	mov    %rsi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	75 3a                	jne    0x6a
  30:	48 8b 16             	mov    (%rsi),%rdx
  33:	4c 39 e2             	cmp    %r12,%rdx
  36:	0f 85 5b 73 43 05    	jne    0x5437397
  3c:	48 39 f5             	cmp    %rsi,%rbp
  3f:	0f                   	.byte 0xf