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Fix using mbuf after returning it to mbuf free list for redis mset. #461

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2 changes: 1 addition & 1 deletion .travis.yml
Original file line number Diff line number Diff line change
@@ -1,3 +1,3 @@
language: c
script: bash ./travis.sh

sudo: required
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@andyqzb andyqzb Aug 26, 2016

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What is the intention of this line?

8 changes: 6 additions & 2 deletions src/proto/nc_redis.c
Original file line number Diff line number Diff line change
Expand Up @@ -2293,6 +2293,7 @@ redis_copy_bulk(struct msg *dst, struct msg *src)
struct mbuf *mbuf, *nbuf;
uint8_t *p;
uint32_t len = 0;
uint32_t mlen = 0;
uint32_t bytes = 0;
rstatus_t status;

Expand Down Expand Up @@ -2328,13 +2329,16 @@ redis_copy_bulk(struct msg *dst, struct msg *src)

/* copy len bytes to dst */
for (; mbuf;) {
if (mbuf_length(mbuf) <= len) { /* steal this buf from src to dst */
mlen = mbuf_length(mbuf);
if (mlen <= len) { /* steal this buf from src to dst */
nbuf = STAILQ_NEXT(mbuf, next);
mbuf_remove(&src->mhdr, mbuf);
if (dst != NULL) {
mbuf_insert(&dst->mhdr, mbuf);
} else {
mbuf_put(mbuf);
}
len -= mbuf_length(mbuf);
len -= mlen;
mbuf = nbuf;
} else { /* split it */
if (dst != NULL) {
Expand Down