general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 9904 Comm: syz-executor.2 Not tainted 6.1.0-rc1-next-20221021 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:_parse_integer_fixup_radix+0x60/0x2a0
Code: 02 00 00 41 8b 2c 24 31 ff 89 ee e8 3a fa 36 ff 85 ed 75 66 e8 01 fe 36 ff 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 e6 01 00 00
RSP: 0018:ffff888044b27a40 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900059f8000
RDX: 0000000000000000 RSI: ffffffff821119af RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888044b27a90
R13: ffff888044b27bd8 R14: 000000007fffffff R15: ffff888043184cd0
FS:  00007f1fb6fd6700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fb6fd7000 CR3: 000000000e6ca000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 simple_strntoull+0x88/0x180
 memparse+0x72/0x210
 shmem_parse_one+0x6c6/0xb70
 vfs_parse_fs_param+0x204/0x3d0
 vfs_parse_fs_string+0xdb/0x190
 shmem_parse_options+0x160/0x260
 path_mount+0x12c8/0x1e30
 __x64_sys_mount+0x282/0x310
 do_syscall_64+0x3b/0xa0
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f1fb9a6204a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f1fb6fd5fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1fb9a6204a
RDX: 0000000020001880 RSI: 0000000020004180 RDI: 0000000000000000
RBP: 00007f1fb6fd6040 R08: 00007f1fb6fd6040 R09: 0000000020001880
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020001880
R13: 0000000020004180 R14: 00007f1fb6fd6000 R15: 00000000200044c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_parse_integer_fixup_radix+0x60/0x2a0
Code: 02 00 00 41 8b 2c 24 31 ff 89 ee e8 3a fa 36 ff 85 ed 75 66 e8 01 fe 36 ff 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 48 89 da 83 e2 07 38 d0 7f 08 84 c0 0f 85 e6 01 00 00
RSP: 0018:ffff888044b27a40 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900059f8000
RDX: 0000000000000000 RSI: ffffffff821119af RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888044b27a90
9pnet: Could not find request transport: rdma
R13: ffff888044b27bd8 R14: 000000007fffffff R15: ffff888043184cd0
FS:  00007f1fb6fd6700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fb6fd7000 CR3: 000000000e6ca000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.4'.
----------------
Code disassembly (best guess):
   0:	02 00                	add    (%rax),%al
   2:	00 41 8b             	add    %al,-0x75(%rcx)
   5:	2c 24                	sub    $0x24,%al
   7:	31 ff                	xor    %edi,%edi
   9:	89 ee                	mov    %ebp,%esi
   b:	e8 3a fa 36 ff       	callq  0xff36fa4a
  10:	85 ed                	test   %ebp,%ebp
  12:	75 66                	jne    0x7a
  14:	e8 01 fe 36 ff       	callq  0xff36fe1a
  19:	48 89 da             	mov    %rbx,%rdx
  1c:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  23:	fc ff df
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax <-- trapping instruction
  2e:	48 89 da             	mov    %rbx,%rdx
  31:	83 e2 07             	and    $0x7,%edx
  34:	38 d0                	cmp    %dl,%al
  36:	7f 08                	jg     0x40
  38:	84 c0                	test   %al,%al
  3a:	0f 85 e6 01 00 00    	jne    0x226