diff options
| author | tuxoko <[email protected]> | 2015-10-30 14:34:22 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2015-11-19 16:01:47 -0800 |
| commit | d0c614ecf9eb0b5f5c5d75316c2faeff63e03c4e (patch) | |
| tree | 89bf3c17a4bb93d5986e9c65a70fac535ebba966 | |
| parent | d287880afd843bd8c0cbcabe514b65083d1a0090 (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
| -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 06fb72b60..c1e0bfbba 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]); |