diff options
| author | GeLiXin <[email protected]> | 2016-08-19 14:50:21 +0800 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2016-08-19 09:14:24 -0700 |
| commit | aeb9baa618beea1458ab3ab22cbc0f39213da6cf (patch) | |
| tree | ae81639be26d78b5a4d5651780001a6fbb8adf25 | |
| parent | 576865be20ce4a0d4365cd62a589edec070fe08c (diff) | |
Fix: handle NULL case in spl_kmem_free_track()
When DEBUG_KMEM_TRACKING is enabled in SPL, we keep tracking all
the buffers alloced by kmem_alloc() and kmem_zalloc(). If a NULL
pointer which indicates no track info in SPL is passed to
spl_kmem_free_track, we just ignore it.
Signed-off-by: GeLiXin <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue zfsonlinux/zfs#4967
Closes #567
| -rwxr-xr-x[-rw-r--r--] | module/spl/spl-kmem.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/module/spl/spl-kmem.c b/module/spl/spl-kmem.c index 0931fdfcf..2b68c297a 100644..100755 --- a/module/spl/spl-kmem.c +++ b/module/spl/spl-kmem.c @@ -383,6 +383,10 @@ spl_kmem_free_track(const void *ptr, size_t size) { kmem_debug_t *dptr; + /* Ignore NULL pointer since we haven't tracked it at all*/ + if (ptr == NULL) + return; + /* Must exist in hash due to kmem_alloc() */ dptr = kmem_del_init(&kmem_lock, kmem_table, KMEM_HASH_BITS, ptr); ASSERT3P(dptr, !=, NULL); |