syzbot

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bad length passed for symlink [/tmp/syz-imagegen2884317625/] (got 39, expected 29)
WARNING: CPU: 1 PID: 5831 at ./include/linux/fs.h:803 inode_set_cached_link+0xd0/0x110 include/linux/fs.h:802
Modules linked in:
CPU: 1 UID: 0 PID: 5831 Comm: syz-executor172 Not tainted 6.14.0-rc5-syzkaller-00218-g2a520073e74f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:inode_set_cached_link+0xd0/0x110 include/linux/fs.h:802
Code: 41 5f 5d e9 fd 25 91 fe e8 dd c3 42 ff c6 05 7e ee a7 0d 01 90 48 c7 c7 e0 eb 3d 8c 4c 89 f6 44 89 fa 89 e9 e8 71 80 02 ff 90 <0f> 0b 90 90 e9 6a ff ff ff 89 f9 80 e1 07 80 c1 03 38 c1 7c a1 e8
RSP: 0018:ffffc900030af698 EFLAGS: 00010246
RAX: 59c2b3f6420cfd00 RBX: ffff88807ac16fa8 RCX: ffff888049c53c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 000000000000001d R08: ffffffff81819e32 R09: 1ffff110170e519a
R10: dffffc0000000000 R11: ffffed10170e519b R12: ffff88807ac16fa8
R13: dffffc0000000000 R14: ffff88807ac16cf8 R15: 0000000000000027
FS:  00005555603d7380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd88229fc8 CR3: 000000007a49a000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __ext4_iget+0x2ea4/0x3f30 fs/ext4/inode.c:5012
 ext4_lookup+0x3e3/0x750 fs/ext4/namei.c:1813
 __lookup_slow+0x298/0x400 fs/namei.c:1793
 lookup_slow+0x53/0x70 fs/namei.c:1810
 walk_component+0x2e1/0x410 fs/namei.c:2114
 lookup_last fs/namei.c:2612 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2636
 filename_lookup+0x2a3/0x670 fs/namei.c:2665
 user_path_at+0x3a/0x60 fs/namei.c:3072
 ksys_umount fs/namespace.c:2071 [inline]
 __do_sys_umount fs/namespace.c:2079 [inline]
 __se_sys_umount fs/namespace.c:2077 [inline]
 __x64_sys_umount+0xf1/0x170 fs/namespace.c:2077
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9030e48507
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffd8822a228 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9030e48507
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd8822a2e0
RBP: 00007ffd8822a2e0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffd8822b3d0
R13: 00005555603e8740 R14: 431bde82d7b634db R15: 00007ffd8822d550
 </TASK>