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Fix up r300385

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I accidentally glossed over the fact that tmp is manipulated via strchr, so
if we tried to free `tmp` after r300385, it would have crashed.

Create a separate pointer (tmp2) to track the original allocation of `tmp`,
and free `tmp2` if `p->nc_lookups` can't be malloced

MFC after: 4 days
X-MFC with: r300385
Reported by: Coverity
CID: 1356026
Sponsored by: EMC / Isilon Storage Division
This commit is contained in:
Enji Cooper 2016-05-24 19:52:05 +00:00
parent 0e38422096
commit 8f5cc69027
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=300624
1 changed files with 3 additions and 2 deletions
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5
lib/libc/rpc/getnetconfig.c
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@ -692,7 +692,7 @@ static struct netconfig *
dup_ncp(struct netconfig *ncp)
{
struct netconfig *p;
char *tmp;
char *tmp, *tmp2;
u_int i;
if ((tmp=malloc(MAXNETCONFIGLINE)) == NULL)
@ -701,6 +701,7 @@ dup_ncp(struct netconfig *ncp)
free(tmp);
return(NULL);
}
tmp2 = tmp;
/*
* First we dup all the data from matched netconfig buffer. Then we
* adjust some of the member pointer to a pre-allocated buffer where
@ -722,7 +723,7 @@ dup_ncp(struct netconfig *ncp)
if (p->nc_lookups == NULL) {
free(p->nc_netid);
free(p);
free(tmp);
free(tmp2);
return(NULL);
}
for (i=0; i < p->nc_nlookups; i++) {