diff options
| author |   Yang Yingliang <yangyingliang@huawei.com> | 2022-04-11 19:12:13 +0800 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2022-04-11 17:58:52 +0200 |
| commit | e50abbf788c239d529f9ab81e325f8e8f8432c9d (patch) | |
| tree | c9b84f157369ad9c3bc5ff0845790461ca3c651a /drivers/virt/coco | |
| parent | x86/sev-es: Replace open-coded hlt-loop with sev_es_terminate() (diff) | |
| download | linux-dev-e50abbf788c239d529f9ab81e325f8e8f8432c9d.tar.xz linux-dev-e50abbf788c239d529f9ab81e325f8e8f8432c9d.zip | |
virt: sevguest: Fix return value check in alloc_shared_pages()
If alloc_pages() fails, it returns a NULL pointer. Replace the wrong
IS_ERR() check with the proper NULL pointer check.
Fixes: fce96cf04430 ("virt: Add SEV-SNP guest driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
Link: https://lore.kernel.org/r/20220411111213.1477853-1-yangyingliang@huawei.com
Diffstat (limited to 'drivers/virt/coco')
| -rw-r--r-- | drivers/virt/coco/sevguest/sevguest.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/virt/coco/sevguest/sevguest.c b/drivers/virt/coco/sevguest/sevguest.c index 15afb6ce8d19..aaa6134d1d40 100644 --- a/drivers/virt/coco/sevguest/sevguest.c +++ b/drivers/virt/coco/sevguest/sevguest.c @@ -581,7 +581,7 @@ static void *alloc_shared_pages(size_t sz) int ret; page = alloc_pages(GFP_KERNEL_ACCOUNT, get_order(sz)); - if (IS_ERR(page)) + if (!page) return NULL; ret = set_memory_decrypted((unsigned long)page_address(page), npages); |