RDX: 0000000000000000 RSI: 0000000000005c33 RDI: 0000000000000005
RBP: 00007f4b4984b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe14b5ce4f R14: 00007f4b4984b300 R15: 0000000000022000
general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 9073 Comm: syz-executor.1 Not tainted 5.10.173 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:io_arm_poll_handler io_uring/io_uring.c:5795 [inline]
RIP: 0010:__io_queue_sqe+0x69f/0xa60 io_uring/io_uring.c:7043
Code: 0f 85 24 03 00 00 48 8b 3d d6 8a da 02 ba 48 00 00 00 be 20 0a 00 00 e8 cf ce 7d ff 48 8d 78 14 49 89 c5 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffff8880479dfb28 EFLAGS: 00010213
RAX: 0000000000000002 RBX: 1ffff11008f3bf6b RCX: 0000000000000000
RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000014
RBP: ffff8880463b6dc0 R08: 0000000000000000 R09: ffffffff8509e133
R10: fffffbfff0a13c26 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880463b6e18 R15: ffff8880463b6e08
FS:  00007f4b4984b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cf23000 CR3: 00000000495a2000 CR4: 0000000000350ee0
Call Trace:
 io_queue_sqe io_uring/io_uring.c:7071 [inline]
 io_submit_sqe io_uring/io_uring.c:7248 [inline]
 io_submit_sqes+0x4484/0x86e0 io_uring/io_uring.c:7354
 __do_sys_io_uring_enter+0x6b5/0x17b0 io_uring/io_uring.c:10083
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f4b4c2d5b19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4b4984b188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f4b4c3e8f60 RCX: 00007f4b4c2d5b19
RDX: 0000000000000000 RSI: 0000000000005c33 RDI: 0000000000000005
RBP: 00007f4b4984b1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffe14b5ce4f R14: 00007f4b4984b300 R15: 0000000000022000
Modules linked in:
---[ end trace f6d34c5b15b9d367 ]---
RIP: 0010:io_arm_poll_handler io_uring/io_uring.c:5795 [inline]
RIP: 0010:__io_queue_sqe+0x69f/0xa60 io_uring/io_uring.c:7043
Code: 0f 85 24 03 00 00 48 8b 3d d6 8a da 02 ba 48 00 00 00 be 20 0a 00 00 e8 cf ce 7d ff 48 8d 78 14 49 89 c5 48 89 f8 48 c1 e8 03 <42> 0f b6 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85
RSP: 0018:ffff8880479dfb28 EFLAGS: 00010213
RAX: 0000000000000002 RBX: 1ffff11008f3bf6b RCX: 0000000000000000
RDX: 0000000000000048 RSI: 0000000000000000 RDI: 0000000000000014
RBP: ffff8880463b6dc0 R08: 0000000000000000 R09: ffffffff8509e133
R10: fffffbfff0a13c26 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff8880463b6e18 R15: ffff8880463b6e08
FS:  00007f4b4984b700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2cf23000 CR3: 00000000495a2000 CR4: 0000000000350ee0
FAT-fs (loop7): bogus number of reserved sectors
FAT-fs (loop7): Can't find a valid FAT filesystem
FAT-fs (loop7): bogus number of reserved sectors
FAT-fs (loop7): Can't find a valid FAT filesystem
FAT-fs (loop7): bogus number of reserved sectors
FAT-fs (loop7): Can't find a valid FAT filesystem
----------------
Code disassembly (best guess):
   0:	0f 85 24 03 00 00    	jne    0x32a
   6:	48 8b 3d d6 8a da 02 	mov    0x2da8ad6(%rip),%rdi        # 0x2da8ae3
   d:	ba 48 00 00 00       	mov    $0x48,%edx
  12:	be 20 0a 00 00       	mov    $0xa20,%esi
  17:	e8 cf ce 7d ff       	callq  0xff7dceeb
  1c:	48 8d 78 14          	lea    0x14(%rax),%rdi
  20:	49 89 c5             	mov    %rax,%r13
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 14 20       	movzbl (%rax,%r12,1),%edx <-- trapping instruction
  2f:	48 89 f8             	mov    %rdi,%rax
  32:	83 e0 07             	and    $0x7,%eax
  35:	83 c0 03             	add    $0x3,%eax
  38:	38 d0                	cmp    %dl,%al
  3a:	7c 08                	jl     0x44
  3c:	84 d2                	test   %dl,%dl
  3e:	0f                   	.byte 0xf
  3f:	85                   	.byte 0x85