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cxl/test: Add check after kzalloc() memory in alloc_mock_res()

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alloc_mock_res() calls kzalloc() without checking the return value.
Add scope based resource management to deal with the allocated memory
cleanly.

Reported-by: sashiko-bot
Fixes: 67dcdd4d3b ("tools/testing/cxl: Introduce a mocked-up CXL port hierarchy")
Reviewed-by: Alison Schofield <alison.schofield@intel.com>
Link: https://patch.msgid.link/20260611230305.197390-1-dave.jiang@intel.com
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
This commit is contained in:
Dave Jiang 2026-06-11 16:03:05 -07:00
parent 50cc34be04
commit dfe28c8592
1 changed files with 6 additions and 2 deletions
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8
tools/testing/cxl/test/cxl.c
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@ -433,12 +433,16 @@ static void depopulate_all_mock_resources(void)
static struct cxl_mock_res *alloc_mock_res(resource_size_t size, int align)
{
struct cxl_mock_res *res = kzalloc(sizeof(*res), GFP_KERNEL);
struct genpool_data_align data = {
.align = align,
};
unsigned long phys;
struct cxl_mock_res *res __free(kfree) = kzalloc(sizeof(*res),
GFP_KERNEL);
if (!res)
return NULL;
INIT_LIST_HEAD(&res->list);
phys = gen_pool_alloc_algo(cxl_mock_pool, size,
gen_pool_first_fit_align, &data);
@ -453,7 +457,7 @@ static struct cxl_mock_res *alloc_mock_res(resource_size_t size, int align)
list_add(&res->list, &mock_res);
mutex_unlock(&mock_res_lock);
return res;
return no_free_ptr(res);
}
/* Only update CFMWS0 as this is used by the auto region. */