raid6test: fix stack overflow
Testing on x86_64 with NDISKS=255 yields:
do_IRQ: modprobe near stack overflow (cur:ffff88007d19c000,sp:ffff88007d19c128)
...and eventually
general protection fault: 0000 [#1]
Moving the scribble buffers off the stack allows the test to complete
successfully.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/crypto/async_tx/raid6test.c b/crypto/async_tx/raid6test.c
index 98c83ca..3ec27c7 100644
--- a/crypto/async_tx/raid6test.c
+++ b/crypto/async_tx/raid6test.c
@@ -28,6 +28,7 @@
#define NDISKS 16 /* Including P and Q */
static struct page *dataptrs[NDISKS];
+static addr_conv_t addr_conv[NDISKS];
static struct page *data[NDISKS+3];
static struct page *spare;
static struct page *recovi;
@@ -69,7 +70,6 @@
static void raid6_dual_recov(int disks, size_t bytes, int faila, int failb, struct page **ptrs)
{
struct async_submit_ctl submit;
- addr_conv_t addr_conv[disks];
struct completion cmp;
struct dma_async_tx_descriptor *tx = NULL;
enum sum_check_flags result = ~0;
@@ -156,7 +156,6 @@
static int test(int disks, int *tests)
{
- addr_conv_t addr_conv[disks];
struct dma_async_tx_descriptor *tx;
struct async_submit_ctl submit;
struct completion cmp;
