[syzbot] [autofs?] memory leak in autofs_new_ino

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    8d3ae59288f1 Linux 7.2
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1784b6c6580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=11ad91fcc8fa7933
dashboard link: https://syzkaller.appspot.com/bug?extid=df1db6e034b3953e19f5
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11dc9a25580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1670b949580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/735a458674ac/disk-8d3ae592.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fbf50adb0745/vmlinux-8d3ae592.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6effa5f7f690/bzImage-8d3ae592.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+df1db6e034b3953e19f5@xxxxxxxxxxxxxxxxxxxxxxxxx

BUG: memory leak
unreferenced object 0xffff8881146ebc00 (size 192):
  comm "syz.0.20", pid 5969, jiffies 4294943196
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 55e8e63e):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4597 [inline]
    slab_alloc_node mm/slub.c:4917 [inline]
    __kmalloc_cache_noprof+0x356/0x440 mm/slub.c:5485
    _kmalloc_noprof include/linux/slab.h:988 [inline]
    _kzalloc_noprof include/linux/slab.h:1309 [inline]
    autofs_new_ino+0x24/0x80 fs/autofs/inode.c:16
    autofs_fill_super+0x66/0x1d0 fs/autofs/inode.c:321
    vfs_get_super fs/super.c:1273 [inline]
    get_tree_nodev+0x91/0xf0 fs/super.c:1292
    autofs_get_tree+0xbc/0x120 fs/autofs/inode.c:378
    vfs_get_tree+0x30/0x120 fs/super.c:1700
    vfs_cmd_create+0x7d/0x120 fs/fsopen.c:231
    vfs_fsconfig_locked fs/fsopen.c:295 [inline]
    __do_sys_fsconfig+0x492/0x9e0 fs/fsopen.c:463
    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
    do_syscall_64+0xf8/0x610 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF


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