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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>
This commit is contained in:
Dan Williams 2009-09-16 21:03:29 -07:00
parent 376ec37667
commit 1b6df69309
1 changed files with 1 additions and 2 deletions
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3
crypto/async_tx/raid6test.c
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@ -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 char disk_type(int d, int disks)
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_disks(int i, int j, int disks)
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;