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x86/efi: Check krealloc return value

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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>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
This commit is contained in:
Borislav Petkov 2013-10-31 17:25:09 +01:00 committed by Matt Fleming
parent d2f7cbe7b2
commit ee41143027
1 changed files with 8 additions and 0 deletions
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8
arch/x86/platform/efi/efi.c
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@ -860,6 +860,9 @@ void __init efi_enter_virtual_mode(void)
new_memmap = krealloc(new_memmap, new_memmap = krealloc(new_memmap,
(count + 1) * memmap.desc_size, (count + 1) * memmap.desc_size,
GFP_KERNEL); GFP_KERNEL);
if (!new_memmap)
goto err_out;
memcpy(new_memmap + (count * memmap.desc_size), md, memcpy(new_memmap + (count * memmap.desc_size), md,
memmap.desc_size); memmap.desc_size);
count++; count++;
@ -914,6 +917,11 @@ void __init efi_enter_virtual_mode(void)
EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_RUNTIME_ACCESS, EFI_VARIABLE_RUNTIME_ACCESS,
0, NULL); 0, NULL);
return;
err_out:
pr_err("Error reallocating memory, EFI runtime non-functional!\n");
} }
/* /*