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nvlist leaked in zpool_find_config()

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In `zpool_find_config()`, the `pools` nvlist is leaked.  Part of it (a
sub-nvlist) is returned in `*configp`, but the callers also leak that.

Additionally, in `zdb.c:main()`, the `searchdirs` is leaked.

The leaks were detected by ASAN (`configure --enable-asan`).

This commit resolves the leaks.

Reviewed-by: Igor Kozhukhov <igor@dilos.org>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #11396
This commit is contained in:
Matthew Ahrens 2020-12-23 09:52:24 -08:00 committed by Brian Behlendorf
parent 40ab927ae8
commit b6722b871b
4 changed files with 16 additions and 3 deletions
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10
cmd/zdb/zdb.c
View File

@ -8435,6 +8435,11 @@ main(int argc, char **argv)
} }
} }
if (searchdirs != NULL) {
umem_free(searchdirs, nsearch * sizeof (char *));
searchdirs = NULL;
}
/* /*
* import_checkpointed_state makes the assumption that the * import_checkpointed_state makes the assumption that the
* target pool that we pass it is already part of the spa * target pool that we pass it is already part of the spa
@ -8453,6 +8458,11 @@ main(int argc, char **argv)
target = checkpoint_target; target = checkpoint_target;
} }
if (cfg != NULL) {
nvlist_free(cfg);
cfg = NULL;
}
if (target_pool != target) if (target_pool != target)
free(target_pool); free(target_pool);

1
cmd/zhack/zhack.c
View File

@ -150,6 +150,7 @@ zhack_import(char *target, boolean_t readonly)
zfeature_checks_disable = B_TRUE; zfeature_checks_disable = B_TRUE;
error = spa_import(target, config, props, error = spa_import(target, config, props,
(readonly ? ZFS_IMPORT_SKIP_MMP : ZFS_IMPORT_NORMAL)); (readonly ? ZFS_IMPORT_SKIP_MMP : ZFS_IMPORT_NORMAL));
fnvlist_free(config);
zfeature_checks_disable = B_FALSE; zfeature_checks_disable = B_FALSE;
if (error == EEXIST) if (error == EEXIST)
error = 0; error = 0;

1
cmd/ztest/ztest.c
View File

@ -7153,6 +7153,7 @@ ztest_import_impl(ztest_shared_t *zs)
VERIFY0(zpool_find_config(NULL, ztest_opts.zo_pool, &cfg, &args, VERIFY0(zpool_find_config(NULL, ztest_opts.zo_pool, &cfg, &args,
&libzpool_config_ops)); &libzpool_config_ops));
VERIFY0(spa_import(ztest_opts.zo_pool, cfg, NULL, flags)); VERIFY0(spa_import(ztest_opts.zo_pool, cfg, NULL, flags));
fnvlist_free(cfg);
} }
/* /*

7
lib/libzutil/zutil_import.c
View File

@ -1539,7 +1539,7 @@ zpool_find_config(void *hdl, const char *target, nvlist_t **configp,
nvlist_t *pools; nvlist_t *pools;
nvlist_t *match = NULL; nvlist_t *match = NULL;
nvlist_t *config = NULL; nvlist_t *config = NULL;
char *name = NULL, *sepp = NULL; char *sepp = NULL;
char sep = '\0'; char sep = '\0';
int count = 0; int count = 0;
char *targetdup = strdup(target); char *targetdup = strdup(target);
@ -1563,11 +1563,11 @@ zpool_find_config(void *hdl, const char *target, nvlist_t **configp,
/* multiple matches found */ /* multiple matches found */
continue; continue;
} else { } else {
match = config; match = fnvlist_dup(config);
name = nvpair_name(elem);
} }
} }
} }
fnvlist_free(pools);
} }
if (count == 0) { if (count == 0) {
@ -1577,6 +1577,7 @@ zpool_find_config(void *hdl, const char *target, nvlist_t **configp,
if (count > 1) { if (count > 1) {
free(targetdup); free(targetdup);
fnvlist_free(match);
return (EINVAL); return (EINVAL);
} }