EXT4-fs (loop0): 1 truncate cleaned up
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
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: 431 Comm: syz-executor.0 Not tainted 5.10.136-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:ext4_xattr_set_entry+0x1e20/0x3ed0 fs/ext4/xattr.c:1586
Code: 00 00 fc ff df 48 89 df 48 c1 ef 03 80 3c 07 00 0f 85 04 1f 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 2b 4c 89 ef 48 c1 ef 03 <0f> b6 3c 07 4c 89 e8 83 e0 07 83 c0 03 40 38 f8 7c 09 40 84 ff 0f
RSP: 0018:ffffc900008671c8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc90000867530 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffc3 RDI: 0000000000000000
RBP: ffffc900008673d0 R08: 0000000000000001 R09: ffff88811c0f4577
R10: 00000000ffffffc3 R11: 00000000ffffffc3 R12: ffffc900008674a0
R13: 0000000000000000 R14: 000000000000001a R15: 0000000000000000
FS:  00007f07da5db700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f07dab84000 CR3: 0000000108bde000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_xattr_ibody_set+0x67/0x270 fs/ext4/xattr.c:2227
 ext4_xattr_set_handle+0x7ec/0x1140 fs/ext4/xattr.c:2384
 ext4_initxattrs+0xa3/0x100 fs/ext4/xattr_security.c:43
 security_inode_init_security+0x18f/0x2d0 security/security.c:1069
 ext4_init_security+0x1c/0x20 fs/ext4/xattr_security.c:57
 __ext4_new_inode+0x3649/0x43a0 fs/ext4/ialloc.c:1319
 ext4_create+0x267/0x450 fs/ext4/namei.c:2671
 lookup_open fs/namei.c:3101 [inline]
 open_last_lookups fs/namei.c:3171 [inline]
 path_openat+0x23dd/0x38e0 fs/namei.c:3361
 do_filp_open+0x17d/0x3b0 fs/namei.c:3391
 do_sys_openat2+0x120/0x3c0 fs/open.c:1180
 do_sys_open fs/open.c:1196 [inline]
 __do_sys_creat fs/open.c:1270 [inline]
 __se_sys_creat fs/open.c:1264 [inline]
 __x64_sys_creat+0xd4/0x130 fs/open.c:1264
 do_syscall_64+0x32/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f07daa68169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f07da5db168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f07dab87f80 RCX: 00007f07daa68169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0
RBP: 00007f07daac3ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff4fea1a0f R14: 00007f07da5db300 R15: 0000000000022000
Modules linked in:
---[ end trace 70dbd12e74199636 ]---
RIP: 0010:ext4_xattr_set_entry+0x1e20/0x3ed0 fs/ext4/xattr.c:1586
Code: 00 00 fc ff df 48 89 df 48 c1 ef 03 80 3c 07 00 0f 85 04 1f 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 2b 4c 89 ef 48 c1 ef 03 <0f> b6 3c 07 4c 89 e8 83 e0 07 83 c0 03 40 38 f8 7c 09 40 84 ff 0f
RSP: 0018:ffffc900008671c8 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffffc90000867530 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffc3 RDI: 0000000000000000
RBP: ffffc900008673d0 R08: 0000000000000001 R09: ffff88811c0f4577
R10: 00000000ffffffc3 R11: 00000000ffffffc3 R12: ffffc900008674a0
R13: 0000000000000000 R14: 000000000000001a R15: 0000000000000000
FS:  00007f07da5db700(0000) GS:ffff8881f7200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f07dab84000 CR3: 0000000108bde000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 4 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	df 48 c1             	fisttps -0x3f(%rax)
   6:	ef                   	out    %eax,(%dx)
   7:	03 80 3c 07 00 0f    	add    0xf00073c(%rax),%eax
   d:	85 04 1f             	test   %eax,(%rdi,%rbx,1)
  10:	00 00                	add    %al,(%rax)
  12:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  19:	fc ff df
  1c:	4c 8b 2b             	mov    (%rbx),%r13
  1f:	4c 89 ef             	mov    %r13,%rdi
  22:	48 c1 ef 03          	shr    $0x3,%rdi
* 26:	0f b6 3c 07          	movzbl (%rdi,%rax,1),%edi <-- trapping instruction
  2a:	4c 89 e8             	mov    %r13,%rax
  2d:	83 e0 07             	and    $0x7,%eax
  30:	83 c0 03             	add    $0x3,%eax
  33:	40 38 f8             	cmp    %dil,%al
  36:	7c 09                	jl     0x41
  38:	40 84 ff             	test   %dil,%dil
  3b:	0f                   	.byte 0xf