EXT4-fs (sda1): Unrecognized mount option "euid>00000000000000000000" or missing value
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #18216: comm syz-executor.4: corrupted xattr entries
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BUG: KASAN: use-after-free in ext4_xattr_set_entry+0x2e28/0x2f00 fs/ext4/xattr.c:1602
Read of size 4 at addr ffff88819689c084 by task syz-executor.5/27010

CPU: 1 PID: 27010 Comm: syz-executor.5 Not tainted 4.14.146+ #0
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0xca/0x134 lib/dump_stack.c:53
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16581: comm syz-executor.4: corrupted xattr entries
 print_address_description+0x60/0x226 mm/kasan/report.c:187
 __kasan_report.cold+0x1a/0x41 mm/kasan/report.c:316
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16581: comm syz-executor.0: corrupted xattr entries
 ext4_xattr_set_entry+0x2e28/0x2f00 fs/ext4/xattr.c:1602
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16581: comm syz-executor.1: corrupted xattr entries
 ext4_xattr_ibody_set+0x73/0x280 fs/ext4/xattr.c:2238
 ext4_xattr_set_handle+0x508/0xdd0 fs/ext4/xattr.c:2394
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16545: comm syz-executor.1: corrupted xattr entries
 ext4_initxattrs+0xb5/0x110 fs/ext4/xattr_security.c:43
 security_inode_init_security security/security.c:493 [inline]
 security_inode_init_security+0x246/0x330 security/security.c:466
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16545: comm syz-executor.1: corrupted xattr entries
 __ext4_new_inode+0x336f/0x4850 fs/ext4/ialloc.c:1166
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16502: comm syz-executor.1: corrupted xattr entries
 ext4_symlink+0x352/0xa30 fs/ext4/namei.c:3152
 vfs_symlink2+0x32a/0x560 fs/namei.c:4292
 SYSC_symlinkat fs/namei.c:4325 [inline]
 SyS_symlinkat+0x116/0x1e0 fs/namei.c:4305
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16502: comm syz-executor.1: corrupted xattr entries
 do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
EXT4-fs error (device sda1): ext4_xattr_set_entry:1605: inode #16502: comm syz-executor.1: corrupted xattr entries
RIP: 0033:0x459757
RSP: 002b:00007fffc8848e18 EFLAGS: 00000206 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000459757
RDX: 00007fffc8848eb3 RSI: 00000000004bf293 RDI: 00007fffc8848ea0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000013
R10: 0000000000000075 R11: 0000000000000206 R12: 0000000000000001
R13: 00007fffc8848e50 R14: 0000000000000000 R15: 00007fffc8848e60

The buggy address belongs to the page:
page:ffffea00065a2700 count:0 mapcount:0 mapping:          (null) index:0x1
flags: 0x4000000000000000()
raw: 4000000000000000 0000000000000000 0000000000000001 00000000ffffffff
raw: ffffea0006ba6420 ffffea00065b13a0 0000000000000000 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88819689bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88819689c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88819689c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                   ^
 ffff88819689c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88819689c180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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