BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 103ba8067 P4D 103ba8067 PUD 103bd4067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 1838 Comm: syz-executor.0 Not tainted 6.5.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:io_uring_show_fdinfo+0x15c/0x6d0 io_uring/fdinfo.c:96
Code: 83 e0 01 89 44 24 28 45 31 ff 48 89 5c 24 30 48 89 6c 24 18 44 89 64 24 2c 41 8d 04 2f 49 8b 8d d0 00 00 00 8b 54 24 04 21 d0 <44> 8b 2c 81 41 39 d5 0f 87 ad 00 00 00 44 89 ed 8b 4c 24 28 d3 e5
RSP: 0018:ffffc90001977dc0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888104300000 RCX: 0000000000000000
RDX: 0000000000003fff RSI: ffffffff8210b865 RDI: ffff888101bd3099
RBP: 0000000000000000 R08: ffff0a00ffffff00 R09: 00000000ffff0a00
R10: 0000001000000000 R11: 0000000400000001 R12: 0000000000000001
R13: ffff88810aa70000 R14: ffff88810928c0e8 R15: 0000000000000000
FS:  00007fd8542af6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000103b92000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 seq_show+0x190/0x1d0 fs/proc/fd.c:70
 traverse+0x9d/0x1a0 fs/seq_file.c:111
 seq_lseek+0x5a/0xc0 fs/seq_file.c:323
 vfs_llseek fs/read_write.c:289 [inline]
 ksys_lseek fs/read_write.c:302 [inline]
 __do_sys_lseek fs/read_write.c:313 [inline]
 __se_sys_lseek fs/read_write.c:311 [inline]
 __x64_sys_lseek+0x54/0x90 fs/read_write.c:311
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd85472cae9
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:00007fd8542af0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000008
RAX: ffffffffffffffda RBX: 00007fd85484bf80 RCX: 00007fd85472cae9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005
RBP: 00007fd85477847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000006 R14: 00007fd85484bf80 R15: 00007ffc1f53e308
 </TASK>
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:io_uring_show_fdinfo+0x15c/0x6d0 io_uring/fdinfo.c:96
Code: 83 e0 01 89 44 24 28 45 31 ff 48 89 5c 24 30 48 89 6c 24 18 44 89 64 24 2c 41 8d 04 2f 49 8b 8d d0 00 00 00 8b 54 24 04 21 d0 <44> 8b 2c 81 41 39 d5 0f 87 ad 00 00 00 44 89 ed 8b 4c 24 28 d3 e5
RSP: 0018:ffffc90001977dc0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888104300000 RCX: 0000000000000000
RDX: 0000000000003fff RSI: ffffffff8210b865 RDI: ffff888101bd3099
RBP: 0000000000000000 R08: ffff0a00ffffff00 R09: 00000000ffff0a00
R10: 0000001000000000 R11: 0000000400000001 R12: 0000000000000001
R13: ffff88810aa70000 R14: ffff88810928c0e8 R15: 0000000000000000
FS:  00007fd8542af6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000103b92000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	83 e0 01             	and    $0x1,%eax
   3:	89 44 24 28          	mov    %eax,0x28(%rsp)
   7:	45 31 ff             	xor    %r15d,%r15d
   a:	48 89 5c 24 30       	mov    %rbx,0x30(%rsp)
   f:	48 89 6c 24 18       	mov    %rbp,0x18(%rsp)
  14:	44 89 64 24 2c       	mov    %r12d,0x2c(%rsp)
  19:	41 8d 04 2f          	lea    (%r15,%rbp,1),%eax
  1d:	49 8b 8d d0 00 00 00 	mov    0xd0(%r13),%rcx
  24:	8b 54 24 04          	mov    0x4(%rsp),%edx
  28:	21 d0                	and    %edx,%eax
* 2a:	44 8b 2c 81          	mov    (%rcx,%rax,4),%r13d <-- trapping instruction
  2e:	41 39 d5             	cmp    %edx,%r13d
  31:	0f 87 ad 00 00 00    	ja     0xe4
  37:	44 89 ed             	mov    %r13d,%ebp
  3a:	8b 4c 24 28          	mov    0x28(%rsp),%ecx
  3e:	d3 e5                	shl    %cl,%ebp