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: 404 Comm: syz-executor.0 Not tainted 5.10.144-syzkaller-987214-g7474313da8d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2022
RIP: 0010:ext4_xattr_set_entry+0x4a7/0x3820 fs/ext4/xattr.c:1586
Code: 00 00 48 89 d8 48 c1 e8 03 48 89 84 24 28 01 00 00 42 80 3c 20 00 74 08 48 89 df e8 23 8b ba ff 4c 8b 33 4c 89 f0 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 8f 2d 00 00 4c 89 f8 48 2b 44 24 18 48 89
RSP: 0018:ffffc900009ff3a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc900009ff7a0 RCX: ffff888106bc3b40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc900009ff638 R08: ffffffff81ec6b09 R09: ffffed1021cefb1e
R10: ffffed1021cefb1e R11: 1ffff11021cefb1d R12: dffffc0000000000
R13: 1ffff9200013feee R14: 0000000000000000 R15: 0000000000000000
FS:  0000555556d3b400(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556d4cb78 CR3: 000000010a758000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_xattr_ibody_set+0x7c/0x2a0 fs/ext4/xattr.c:2227
 ext4_xattr_set_handle+0xc5d/0x15a0 fs/ext4/xattr.c:2384
 ext4_initxattrs+0xb2/0x120 fs/ext4/xattr_security.c:43
 security_inode_init_security+0x26c/0x3c0 security/security.c:1033
 ext4_init_security+0x34/0x40 fs/ext4/xattr_security.c:57
 __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: 0033:0x7f09e2f59387
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:00007ffde6f51928 EFLAGS: 00000206 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ffde6f519b0 RCX: 00007f09e2f59387
RDX: 00000000000001ff RSI: 00007ffde6f519b0 RDI: 00000000ffffff9c
RBP: 00007ffde6f5198c R08: 0000000000000000 R09: 0000000000000003
R10: 00007ffde6f516c7 R11: 0000000000000206 R12: 0000000000000032
R13: 00000000000092a2 R14: 0000000000000003 R15: 00007ffde6f519f0
Modules linked in:
---[ end trace 149b36506e04c517 ]---
RIP: 0010:ext4_xattr_set_entry+0x4a7/0x3820 fs/ext4/xattr.c:1586
Code: 00 00 48 89 d8 48 c1 e8 03 48 89 84 24 28 01 00 00 42 80 3c 20 00 74 08 48 89 df e8 23 8b ba ff 4c 8b 33 4c 89 f0 48 c1 e8 03 <42> 8a 04 20 84 c0 0f 85 8f 2d 00 00 4c 89 f8 48 2b 44 24 18 48 89
RSP: 0018:ffffc900009ff3a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc900009ff7a0 RCX: ffff888106bc3b40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc900009ff638 R08: ffffffff81ec6b09 R09: ffffed1021cefb1e
R10: ffffed1021cefb1e R11: 1ffff11021cefb1d R12: dffffc0000000000
R13: 1ffff9200013feee R14: 0000000000000000 R15: 0000000000000000
FS:  0000555556d3b400(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556d4cb78 CR3: 000000010a758000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	48 89 d8             	mov    %rbx,%rax
   5:	48 c1 e8 03          	shr    $0x3,%rax
   9:	48 89 84 24 28 01 00 	mov    %rax,0x128(%rsp)
  10:	00
  11:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1)
  16:	74 08                	je     0x20
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 23 8b ba ff       	callq  0xffba8b43
  20:	4c 8b 33             	mov    (%rbx),%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 8a 04 20          	mov    (%rax,%r12,1),%al <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 8f 2d 00 00    	jne    0x2dc5
  36:	4c 89 f8             	mov    %r15,%rax
  39:	48 2b 44 24 18       	sub    0x18(%rsp),%rax
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89