diff options
| author | tuxoko <[email protected]> | 2015-10-30 14:34:22 -0700 |
|---|---|---|
| committer | Ned Bass <[email protected]> | 2015-12-23 17:29:35 -0800 |
| commit | becc31dda7a310dc69b39d7a177c55c04f1f5c9b (patch) | |
| tree | 759bb8877fcd5b65ea8c3fc9b36f5aafb2caaa35 /module | |
| parent | d8ac2b39c93f4e6b2bf2dad6ac6ce581a71ac45d (diff) | |
Fix null pointer in arc_kmem_reap_now on 32-bit
On 32 bit system, zio_buf_cache is limit to 1M. Larger than that is all NULL.
So we need to avoid reaping them.
Signed-off-by: Chunwei Chen <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Issue #3973
Diffstat (limited to 'module')
| -rw-r--r-- | module/zfs/arc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/module/zfs/arc.c b/module/zfs/arc.c index b759e6483..ec9b46b02 100644 --- a/module/zfs/arc.c +++ b/module/zfs/arc.c @@ -3373,6 +3373,11 @@ arc_kmem_reap_now(void) } for (i = 0; i < SPA_MAXBLOCKSIZE >> SPA_MINBLOCKSHIFT; i++) { +#ifdef _ILP32 + /* reach upper limit of cache size on 32-bit */ + if (zio_buf_cache[i] == NULL) + break; +#endif if (zio_buf_cache[i] != prev_cache) { prev_cache = zio_buf_cache[i]; kmem_cache_reap_now(zio_buf_cache[i]); |