6.1-stable review patch. If anyone has any objections, please let me know.
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From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
[ Upstream commit 56c16d5459d5c050a97a138a00a82b105a8e0a66 ]
Comments and brief description of function enum_rstbl added.
Fixes: b46acd6a6a62 ("fs/ntfs3: Add NTFS journal") Reported-by: Dan Carpenter dan.carpenter@linaro.org Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/fslog.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c index 8e23bd6cd0f2f..339ce5aa3c75b 100644 --- a/fs/ntfs3/fslog.c +++ b/fs/ntfs3/fslog.c @@ -609,14 +609,29 @@ static inline void add_client(struct CLIENT_REC *ca, u16 index, __le16 *head) *head = cpu_to_le16(index); }
+/* + * Enumerate restart table. + * + * @t - table to enumerate. + * @c - current enumerated element. + * + * enumeration starts with @c == NULL + * returns next element or NULL + */ static inline void *enum_rstbl(struct RESTART_TABLE *t, void *c) { __le32 *e; u32 bprt; - u16 rsize = t ? le16_to_cpu(t->size) : 0; + u16 rsize; + + if (!t) + return NULL; + + rsize = le16_to_cpu(t->size);
if (!c) { - if (!t || !t->total) + /* start enumeration. */ + if (!t->total) return NULL; e = Add2Ptr(t, sizeof(struct RESTART_TABLE)); } else {