Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH 11/11] efi: Check krealloc return value | Date | Thu, 31 Oct 2013 17:25:09 +0100 |
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From: Borislav Petkov <bp@suse.de>
Check it just in case. We might just as well panic there because runtime won't be functioning anyway.
Signed-off-by: Borislav Petkov <bp@suse.de> --- arch/x86/platform/efi/efi.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index b453069236fd..3fac4dee492f 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -860,6 +860,9 @@ void __init efi_enter_virtual_mode(void) new_memmap = krealloc(new_memmap, (count + 1) * memmap.desc_size, GFP_KERNEL); + if (!new_memmap) + goto err_out; + memcpy(new_memmap + (count * memmap.desc_size), md, memmap.desc_size); count++; @@ -914,6 +917,11 @@ void __init efi_enter_virtual_mode(void) EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS, 0, NULL); + + return; + + err_out: + pr_err("Error reallocating memory, EFI runtime non-functional!\n"); } /* -- 1.8.4
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