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module/decompress: Avoid open-coded kvrealloc()

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Replace open-coded allocate/copy with kvrealloc().

Signed-off-by: Kees Cook <kees@kernel.org>
Reviewed-by: Petr Pavlu <petr.pavlu@suse.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This commit is contained in:
Kees Cook
2025-11-19 14:54:43 -08:00
committed by Sami Tolvanen
parent ddc54f912a
commit 68e8555858
1 changed files with 5 additions and 5 deletions
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10
kernel/module/decompress.c
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@@ -17,16 +17,16 @@
static int module_extend_max_pages(struct load_info *info, unsigned int extent)
{
struct page **new_pages;
unsigned int new_max = info->max_pages + extent;
new_pages = kvmalloc_array(info->max_pages + extent,
sizeof(info->pages), GFP_KERNEL);
new_pages = kvrealloc(info->pages,
size_mul(new_max, sizeof(*info->pages)),
GFP_KERNEL);
if (!new_pages)
return -ENOMEM;
memcpy(new_pages, info->pages, info->max_pages * sizeof(info->pages));
kvfree(info->pages);
info->pages = new_pages;
info->max_pages += extent;
info->max_pages = new_max;
return 0;
}