!!!ext4_initxattrs set hndl name selinux 
general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 405 Comm: syz-executor.0 Not tainted 5.10.144-syzkaller-987214-g7474313da8d6-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2022
RIP: 0010:ext4_xattr_set_entry+0x983/0x2290 fs/ext4/xattr.c:1584
Code: 03 48 89 84 24 c0 00 00 00 42 80 3c 28 00 4c 8d b4 24 00 01 00 00 74 08 4c 89 ff e8 47 86 ba ff 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 dd 15 00 00 44 0f b6 03 41 83 c0 13 41 83
RSP: 0018:ffffc900009ef4a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88810c432780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc900009ef638 R08: ffffffff81ec6ae8 R09: ffffed10241015f3
R10: ffffed10241015f3 R11: 1ffff110241015f2 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc900009ef5a0 R15: ffffc900009ef7a0
FS:  000055555602d400(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555603eb78 CR3: 000000010c556000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_xattr_ibody_set+0x7c/0x2a0 fs/ext4/xattr.c:2230
 ext4_xattr_set_handle+0xc5d/0x15a0 fs/ext4/xattr.c:2387
 ext4_initxattrs+0xcd/0x140 fs/ext4/xattr_security.c:44
 security_inode_init_security+0x26c/0x3c0 security/security.c:1033
 ext4_init_security+0x34/0x40 fs/ext4/xattr_security.c:58
 __ext4_new_inode+0x3648/0x4530 fs/ext4/ialloc.c:1322
 ext4_mkdir+0x3b3/0xbb0 fs/ext4/namei.c:2947
 vfs_mkdir+0x435/0x610 fs/namei.c:3729
 do_mkdirat+0x1b6/0x2d0 fs/namei.c:3752
 __do_sys_mkdirat fs/namei.c:3763 [inline]
 __se_sys_mkdirat fs/namei.c:3761 [inline]
 __x64_sys_mkdirat+0x7b/0x90 fs/namei.c:3761
 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f7237736387
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 02 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd5bebc528 EFLAGS: 00000206 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ffd5bebc5b0 RCX: 00007f7237736387
RDX: 00000000000001ff RSI: 00007ffd5bebc5b0 RDI: 00000000ffffff9c
RBP: 00007ffd5bebc58c R08: 0000000000000000 R09: 0000000000000003
R10: 00007ffd5bebc2c7 R11: 0000000000000206 R12: 0000000000000032
R13: 0000000000009ae8 R14: 0000000000000003 R15: 00007ffd5bebc5f0
Modules linked in:
---[ end trace 6102385bb86d719d ]---
RIP: 0010:ext4_xattr_set_entry+0x983/0x2290 fs/ext4/xattr.c:1584
Code: 03 48 89 84 24 c0 00 00 00 42 80 3c 28 00 4c 8d b4 24 00 01 00 00 74 08 4c 89 ff e8 47 86 ba ff 49 8b 1f 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 dd 15 00 00 44 0f b6 03 41 83 c0 13 41 83
RSP: 0018:ffffc900009ef4a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88810c432780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc900009ef638 R08: ffffffff81ec6ae8 R09: ffffed10241015f3
R10: ffffed10241015f3 R11: 1ffff110241015f2 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc900009ef5a0 R15: ffffc900009ef7a0
FS:  000055555602d400(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555603eb78 CR3: 000000010c556000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	03 48 89             	add    -0x77(%rax),%ecx
   3:	84 24 c0             	test   %ah,(%rax,%rax,8)
   6:	00 00                	add    %al,(%rax)
   8:	00 42 80             	add    %al,-0x80(%rdx)
   b:	3c 28                	cmp    $0x28,%al
   d:	00 4c 8d b4          	add    %cl,-0x4c(%rbp,%rcx,4)
  11:	24 00                	and    $0x0,%al
  13:	01 00                	add    %eax,(%rax)
  15:	00 74 08 4c          	add    %dh,0x4c(%rax,%rcx,1)
  19:	89 ff                	mov    %edi,%edi
  1b:	e8 47 86 ba ff       	callq  0xffba8667
  20:	49 8b 1f             	mov    (%r15),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 8a 04 28          	mov    (%rax,%r13,1),%al <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 dd 15 00 00    	jne    0x1613
  36:	44 0f b6 03          	movzbl (%rbx),%r8d
  3a:	41 83 c0 13          	add    $0x13,%r8d
  3e:	41                   	rex.B
  3f:	83                   	.byte 0x83