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: 20517 Comm: syz-executor.4 Not tainted 5.10.178-syzkaller-00127-g43c801dc3325 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:ext4_xattr_set_entry+0x498/0x3960 fs/ext4/xattr.c:1616
Code: 24 78 48 89 d8 48 c1 e8 03 48 89 84 24 28 01 00 00 42 80 3c 38 00 74 08 48 89 df e8 12 b3 ba ff 4c 8b 23 4c 89 e0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 d1 2e 00 00 4c 89 e8 48 2b 44 24 20 48
RSP: 0000:ffffc900033368a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90003336ca0 RCX: ffff888115e92780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc90003336b40 R08: ffffffff81eccc44 R09: ffffed102e87676d
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000001c R15: dffffc0000000000
FS:  00007fe60bdd2700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ffffcc0 CR3: 000000010f822000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_xattr_ibody_set+0x7c/0x2b0 fs/ext4/xattr.c:2253
 ext4_xattr_set_handle+0xc26/0x14e0 fs/ext4/xattr.c:2410
 ext4_initxattrs+0xa7/0x120 fs/ext4/xattr_security.c:43
 security_inode_init_security+0x252/0x390 security/security.c:1033
 ext4_init_security+0x34/0x40 fs/ext4/xattr_security.c:57
 __ext4_new_inode+0x3159/0x3f70 fs/ext4/ialloc.c:1319
 ext4_create+0x267/0x530 fs/ext4/namei.c:2770
 lookup_open fs/namei.c:3253 [inline]
 open_last_lookups fs/namei.c:3323 [inline]
 path_openat+0x1377/0x3000 fs/namei.c:3512
 do_filp_open+0x21c/0x460 fs/namei.c:3542
 file_open_name fs/open.c:1142 [inline]
 filp_open+0x25d/0x2c0 fs/open.c:1162
 do_coredump+0x267c/0x2d60 fs/coredump.c:763
 get_signal+0x102c/0x1410 kernel/signal.c:2768
 arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
 handle_signal_work kernel/entry/common.c:145 [inline]
 exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
 irqentry_exit_to_user_mode+0x55/0x80 kernel/entry/common.c:287
 irqentry_exit+0x12/0x60 kernel/entry/common.c:375
 exc_general_protection+0x415/0x490 arch/x86/kernel/traps.c:557
 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:565
RIP: 0033:0x7fe60d05f171
Code: 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 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000200000c0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fe60d17ef80 RCX: 00007fe60d05f169
RDX: 0000000020000100 RSI: 00000000200000c0 RDI: 0000000040000000
RBP: 00007fe60d0baca1 R08: 0000000020000180 R09: 0000000020000180
R10: 0000000020000140 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffdf1fdb16f R14: 00007fe60bdd2300 R15: 0000000000022000
Modules linked in:
---[ end trace d232e1f827bfc2ff ]---
RIP: 0010:ext4_xattr_set_entry+0x498/0x3960 fs/ext4/xattr.c:1616
Code: 24 78 48 89 d8 48 c1 e8 03 48 89 84 24 28 01 00 00 42 80 3c 38 00 74 08 48 89 df e8 12 b3 ba ff 4c 8b 23 4c 89 e0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 d1 2e 00 00 4c 89 e8 48 2b 44 24 20 48
RSP: 0000:ffffc900033368a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90003336ca0 RCX: ffff888115e92780
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc90003336b40 R08: ffffffff81eccc44 R09: ffffed102e87676d
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000001c R15: dffffc0000000000
FS:  00007fe60bdd2700(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000010f822000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	24 78                	and    $0x78,%al
   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 38 00       	cmpb   $0x0,(%rax,%r15,1)
  16:	74 08                	je     0x20
  18:	48 89 df             	mov    %rbx,%rdi
  1b:	e8 12 b3 ba ff       	callq  0xffbab332
  20:	4c 8b 23             	mov    (%rbx),%r12
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 d1 2e 00 00    	jne    0x2f08
  37:	4c 89 e8             	mov    %r13,%rax
  3a:	48 2b 44 24 20       	sub    0x20(%rsp),%rax
  3f:	48                   	rex.W