libceph: fix off-by-one bug in ceph_encode_filepath()
There is a BUG_ON() call that doesn't account for the single byte
structure version at the start of an encoded filepath in
ceph_encode_filepath(). Fix that.
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
diff --git a/include/linux/ceph/decode.h b/include/linux/ceph/decode.h
index d8615de..bcbd66c 100644
--- a/include/linux/ceph/decode.h
+++ b/include/linux/ceph/decode.h
@@ -151,7 +151,7 @@
u64 ino, const char *path)
{
u32 len = path ? strlen(path) : 0;
- BUG_ON(*p + sizeof(ino) + sizeof(len) + len > end);
+ BUG_ON(*p + 1 + sizeof(ino) + sizeof(len) + len > end);
ceph_encode_8(p, 1);
ceph_encode_64(p, ino);
ceph_encode_32(p, len);