diff options
| author | DHE <[email protected]> | 2017-11-18 18:21:09 -0500 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2018-01-09 12:26:25 -0800 |
| commit | 460f239e6999195dbcf9b8443c029f07765b21e9 (patch) | |
| tree | 1fe4b79d770f19618a0933334bef6e6d82d570f4 /module/zfs | |
| parent | be54a13c3e7db423ffdb3f7983d4dd1141cc94a0 (diff) | |
Fix -fsanitize=address memory leak
kmem_alloc(0, ...) in userspace returns a leakable pointer.
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: DHE <[email protected]>
Issue #6941
Diffstat (limited to 'module/zfs')
| -rw-r--r-- | module/zfs/spa.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/module/zfs/spa.c b/module/zfs/spa.c index 8844b9f7b..75b928620 100644 --- a/module/zfs/spa.c +++ b/module/zfs/spa.c @@ -1563,7 +1563,7 @@ spa_load_spares(spa_t *spa) static void spa_load_l2cache(spa_t *spa) { - nvlist_t **l2cache; + nvlist_t **l2cache = NULL; uint_t nl2cache; int i, j, oldnvdevs; uint64_t guid; @@ -1647,7 +1647,9 @@ spa_load_l2cache(spa_t *spa) VERIFY(nvlist_remove(sav->sav_config, ZPOOL_CONFIG_L2CACHE, DATA_TYPE_NVLIST_ARRAY) == 0); - l2cache = kmem_alloc(sav->sav_count * sizeof (void *), KM_SLEEP); + if (sav->sav_count > 0) + l2cache = kmem_alloc(sav->sav_count * sizeof (void *), + KM_SLEEP); for (i = 0; i < sav->sav_count; i++) l2cache[i] = vdev_config_generate(spa, sav->sav_vdevs[i], B_TRUE, VDEV_CONFIG_L2CACHE); |