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[TIPC]: Prevent name table corruption if no room for new publication

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Now exits cleanly if attempt to allocate larger array of subsequences fails,
without losing track of pointer to existing array.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Allan Stephens 2006-06-25 23:37:24 -07:00 committed by David S. Miller
parent 5e3c8854c1
commit 9ab230f82f
1 changed files with 9 additions and 9 deletions
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18
net/tipc/name_table.c
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@ -284,18 +284,18 @@ static struct publication *tipc_nameseq_insert_publ(struct name_seq *nseq,
/* Ensure there is space for new sub-sequence */
if (nseq->first_free == nseq->alloc) {
struct sub_seq *sseqs = nseq->sseqs;
nseq->sseqs = tipc_subseq_alloc(nseq->alloc * 2);
if (nseq->sseqs != NULL) {
memcpy(nseq->sseqs, sseqs,
nseq->alloc * sizeof (struct sub_seq));
kfree(sseqs);
dbg("Allocated %u sseqs\n", nseq->alloc);
nseq->alloc *= 2;
} else {
struct sub_seq *sseqs = tipc_subseq_alloc(nseq->alloc * 2);
if (!sseqs) {
warn("Memory squeeze; failed to create sub-sequence\n");
return NULL;
}
dbg("Allocated %u more sseqs\n", nseq->alloc);
memcpy(sseqs, nseq->sseqs,
nseq->alloc * sizeof(struct sub_seq));
kfree(nseq->sseqs);
nseq->sseqs = sseqs;
nseq->alloc *= 2;
}
dbg("Have %u sseqs for type %u\n", nseq->alloc, type);