efi/cper: use stack buffer for error record decoding
commit b3a72ca8 upstream. Joe reports that using a statically allocated buffer for converting CPER error records into human readable text is probably a bad idea. Even though we are not aware of any actual issues, a stack buffer is clearly a better choice here anyway, so let's move the buffer into the stack frames of the two functions that refer to it. Cc: <stable@vger.kernel.org> Reported-by: Joe Perches <joe@perches.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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