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: 10793 Comm: syz-executor.0 Not tainted 5.7.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:memchr+0x29/0x80 lib/string.c:1034
Code: c3 55 48 89 f8 48 01 fa 48 bd 00 00 00 00 00 fc ff df 53 48 83 ec 18 eb 27 48 8d 58 01 48 89 c1 48 89 c7 48 c1 e9 03 83 e7 07 <0f> b6 0c 29 40 38 f9 7f 04 84 c9 75 17 40 3a 73 ff 74 0a 48 89 d8
RSP: 0018:ffffc9000a0a7d90 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 000000000000002c RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000001 R09: fffffbfff1c8730a
R10: ffffffff8e43984f R11: fffffbfff1c87309 R12: 0000000000000002
R13: ffff8880a30464d0 R14: ffffc9000a0a7e98 R15: ffff8880a30464c0
FS:  00007f5e95263700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005680c0 CR3: 00000000a46e4000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 memchr include/linux/string.h:432 [inline]
 legacy_parse_param+0x443/0x840 fs/fs_context.c:567
 vfs_parse_fs_param+0x240/0x5b0 fs/fs_context.c:147
 __do_sys_fsconfig fs/fsopen.c:439 [inline]
 __se_sys_fsconfig fs/fsopen.c:314 [inline]
 __x64_sys_fsconfig+0x4cc/0x5d0 fs/fsopen.c:314
 do_syscall_64+0x98/0x560 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x4665f9
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:00007f5e95263188 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9
RDX: 0000000020000080 RSI: 0000000000000001 RDI: 0000000000000003
RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffe300c5adf R14: 00007f5e95263300 R15: 0000000000022000
Modules linked in:
---[ end trace 911acd5879b8dc5e ]---
RIP: 0010:memchr+0x29/0x80 lib/string.c:1034
Code: c3 55 48 89 f8 48 01 fa 48 bd 00 00 00 00 00 fc ff df 53 48 83 ec 18 eb 27 48 8d 58 01 48 89 c1 48 89 c7 48 c1 e9 03 83 e7 07 <0f> b6 0c 29 40 38 f9 7f 04 84 c9 75 17 40 3a 73 ff 74 0a 48 89 d8
RSP: 0018:ffffc9000a0a7d90 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 000000000000002c RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000001 R09: fffffbfff1c8730a
R10: ffffffff8e43984f R11: fffffbfff1c87309 R12: 0000000000000002
R13: ffff8880a30464d0 R14: ffffc9000a0a7e98 R15: ffff8880a30464c0
FS:  00007f5e95263700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005680c0 CR3: 00000000a46e4000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c3                   	retq
   1:	55                   	push   %rbp
   2:	48 89 f8             	mov    %rdi,%rax
   5:	48 01 fa             	add    %rdi,%rdx
   8:	48 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbp
   f:	fc ff df
  12:	53                   	push   %rbx
  13:	48 83 ec 18          	sub    $0x18,%rsp
  17:	eb 27                	jmp    0x40
  19:	48 8d 58 01          	lea    0x1(%rax),%rbx
  1d:	48 89 c1             	mov    %rax,%rcx
  20:	48 89 c7             	mov    %rax,%rdi
  23:	48 c1 e9 03          	shr    $0x3,%rcx
  27:	83 e7 07             	and    $0x7,%edi
* 2a:	0f b6 0c 29          	movzbl (%rcx,%rbp,1),%ecx <-- trapping instruction
  2e:	40 38 f9             	cmp    %dil,%cl
  31:	7f 04                	jg     0x37
  33:	84 c9                	test   %cl,%cl
  35:	75 17                	jne    0x4e
  37:	40 3a 73 ff          	cmp    -0x1(%rbx),%sil
  3b:	74 0a                	je     0x47
  3d:	48 89 d8             	mov    %rbx,%rax