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| author |   Borislav Petkov <bp@suse.de> | 2013-10-31 17:25:09 +0100 |
|---|---|---|
| committer |   Matt Fleming <matt.fleming@intel.com> | 2013-11-02 11:09:36 +0000 |
| commit | ee41143027706d9f342dfe05487a00b20887fde7 (patch) | |
| tree | 2e4a0bf717d2e171b562b177f5571c5b8659d48b | |
| parent | x86/efi: Runtime services virtual mapping (diff) | |
| download | linux-dev-ee41143027706d9f342dfe05487a00b20887fde7.tar.xz linux-dev-ee41143027706d9f342dfe05487a00b20887fde7.zip | |
x86/efi: Check krealloc return value
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>
| -rw-r--r-- | arch/x86/platform/efi/efi.c | 8 |
1 files changed, 8 insertions, 0 deletions
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"); } /* |