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: 1173 Comm: syz-executor.2 Not tainted 5.10.177-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
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 e2 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:ffffc90000bb6960 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000bb6d60 RCX: ffff88810f6713c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc90000bb6c00 R08: ffffffff81ecc504 R09: ffffed102ccfed55
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000001c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97fdad5dc0 CR3: 0000000117bb7000 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_page_fault+0x33d/0x5b0 arch/x86/mm/fault.c:1521
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:571
RIP: 0033:0x7f98070fef37
Code: 38 5d 41 5c c3 48 8d 3d a5 eb 0b 00 e8 72 f8 ff ff 48 8d 3d a7 eb 0b 00 e8 66 f8 ff ff 66 0f 1f 44 00 00 55 89 fd 48 83 ec 10 <64> 8b 04 25 b4 ff ff ff 85 c0 74 2a 89 fe 31 c0 bf 3c 00 00 00 e8
RSP: 002b:00007f97fdad61a0 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 00007f9807283050 RCX: 00007f9807163169
RDX: 00007f97fdad61c0 RSI: 00007f97fdad62f0 RDI: 000000000000000b
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000058
R10: 00007f97fdaf5050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007fffe402ddbf R14: 00007f97fdaf5300 R15: 0000000000022000
Modules linked in:
---[ end trace 37540c2fab54ed75 ]---
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 e2 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:ffffc90000bb6960 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffc90000bb6d60 RCX: ffff88810f6713c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000001c
RBP: ffffc90000bb6c00 R08: ffffffff81ecc504 R09: ffffed102ccfed55
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 000000000000001c R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31622000 CR3: 0000000117bb7000 CR4: 00000000003526b0
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 e2 b3 ba ff       	callq  0xffbab402
  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