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libceph: fix off-by-one bug in ceph_encode_filepath()
[firefly-linux-kernel-4.4.55.git]
/
include
/
linux
/
ceph
/
decode.h
diff --git
a/include/linux/ceph/decode.h
b/include/linux/ceph/decode.h
index d8615dee5808d3f55c93a38c6fdb66113f09a691..bcbd66c84890086c3d9219286fb9a689d64b70b0 100644
(file)
--- a/
include/linux/ceph/decode.h
+++ b/
include/linux/ceph/decode.h
@@
-151,7
+151,7
@@
static inline void ceph_encode_filepath(void **p, void *end,
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);