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btrfs-progs: tests: fix fssum ASAN memory leak reports 

Free memory after errors in sum(), this is reported by gcc 13 on the CI.

This was reproduced by:

$ make D=asan TEST=019-receive-clones-on-mounted-subvol test-misc

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2024-06-19 04:48:57 +02:00
parent ca9398c406
commit 7e13075c3d
1 changed files with 24 additions and 9 deletions
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33
tests/fssum.c
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@ -524,6 +524,7 @@ sum(int dirfd, int level, sum_t *dircs, char *path_prefix, char *path_in)
int ret;
int fd;
int excl;
int error = 0;
sum_file_data_t sum_file_data = flags[FLAG_STRUCTURE] ?
sum_file_data_strict : sum_file_data_permissive;
struct stat dir_st;
@ -542,18 +543,22 @@ sum(int dirfd, int level, sum_t *dircs, char *path_prefix, char *path_in)
if (!strcmp(de->d_name, ".") || !strcmp(de->d_name, ".."))
continue;
if (entries == alloclen) {
void *tmp;
alloclen += CHUNKS;
namelist = realloc(namelist,
alloclen * sizeof(*namelist));
if (!namelist) {
fprintf(stderr, "malloc failed\n");
exit(-1);
tmp = realloc(namelist, alloclen * sizeof(*namelist));
if (!tmp) {
fprintf(stderr, "realloc failed\n");
error = 1;
goto free_namelist;
}
namelist = tmp;
}
namelist[entries] = strdup(de->d_name);
if (!namelist[entries]) {
fprintf(stderr, "malloc failed\n");
exit(-1);
fprintf(stderr, "stdup failed\n");
error = 1;
goto free_namelist;
}
++entries;
}
@ -577,13 +582,15 @@ sum(int dirfd, int level, sum_t *dircs, char *path_prefix, char *path_in)
ret = fchdir(dirfd);
if (ret == -1) {
perror("fchdir");
exit(-1);
error = 1;
goto free_namelist;
}
ret = lstat(namelist[i], &st);
if (ret) {
fprintf(stderr, "stat failed for %s/%s: %m\n",
path_prefix, path);
exit(-1);
error = 1;
goto free_namelist;
}
/* We are crossing into a different subvol, skip this subtree. */
@ -704,6 +711,14 @@ sum(int dirfd, int level, sum_t *dircs, char *path_prefix, char *path_in)
next:
free(path);
}
free_namelist:
closedir(d);
for (i = 0; i < entries; i++)
free(namelist[i]);
free(namelist);
if (error)
exit(-1);
}
int