Laszlo,

Yes, the EFIAPI definition for ERR_add_error_data() was missed in this updated 
patch file.
It's cool. Thanks for catching this. 


Best Regards & Thanks,
LONG, Qin

-----Original Message-----
From: Ard Biesheuvel [mailto:ard.biesheu...@linaro.org] 
Sent: Tuesday, June 23, 2015 10:07 PM
To: Laszlo Ersek
Cc: edk2-devel@lists.sourceforge.net; Long, Qin; Gary Ching-Pang Lin; Peter 
Jones
Subject: Re: [PATCH] CryptoPkg: OpensslLib: reintroduce EFIAPI for 
ERR_add_error_data()

On 23 June 2015 at 15:34, Laszlo Ersek <ler...@redhat.com> wrote:
>
> Git commit f93f78ea70 (SVN r17633), with subject "CryptoPkg: Update 
> openssl patch file from 0.9.8zf to 1.0.2c", replaced the file
>
>   CryptoPkg/Library/OpensslLib/EDKII_openssl-0.9.8zf.patch
>
> with
>
>   CryptoPkg/Library/OpensslLib/EDKII_openssl-1.0.2c.patch
>
> In the process, two hunks were lost that used to add EFIAPI to the 
> declaration of the variadic function ERR_add_error_data().
>
> The VA_START() macro, from "MdePkg/Include/Base.h", expands to an 
> EFIAPI-dependent implementation when
>
>   !defined(__CC_ARM) && (!defined(__GNUC__) ||
>                          defined(NO_BUILTIN_VA_FUNCS))
>
> Under such circumstances, the va_start() macro invocation in
> ERR_add_error_data() -- which is translated to VA_START() by 
> "CryptoPkg/Include/OpenSslSupport.h" -- results in EFIAPI-dependent 
> code, but callers of the function pass the arguments incorrectly, 
> because the declaration doesn't state EFIAPI.
>
> This leads to crashes when ERR_add_error_vdata(), called by 
> ERR_add_error_data(), tries to access the arguments forwarded to it.
>
> Restore the missing hunk from before SVN r17633.
>
> Cc: Qin Long <qin.l...@intel.com>
> Cc: Ard Biesheuvel <ard.biesheu...@linaro.org>
> Cc: Gary Ching-Pang Lin <g...@suse.com>
> Cc: Peter Jones <pjo...@redhat.com>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Laszlo Ersek <ler...@redhat.com>

Great that you were able to track this down. It also explains why I didn't see 
any of this on AArch64, since we don't have this EFIAPI issue, fortunately.

Acked-by: Ard Biesheuvel <ard.biesheu...@linaro.org>


> ---
>  .../Library/OpensslLib/EDKII_openssl-1.0.2c.patch  | 34 
> ++++++++++++++++++++++
>  1 file changed, 34 insertions(+)
>
> diff --git a/CryptoPkg/Library/OpensslLib/EDKII_openssl-1.0.2c.patch 
> b/CryptoPkg/Library/OpensslLib/EDKII_openssl-1.0.2c.patch
> index 54e14d8..0d9575e 100644
> --- a/CryptoPkg/Library/OpensslLib/EDKII_openssl-1.0.2c.patch
> +++ b/CryptoPkg/Library/OpensslLib/EDKII_openssl-1.0.2c.patch
> @@ -344,3 +344,37 @@ diff U3 crypto/opensslconf.h crypto/opensslconf.h
>   #endif
>
>   #if defined(HEADER_RC4_LOCL_H) && !defined(CONFIG_HEADER_RC4_LOCL_H)
> +diff U3 crypto/err/err.c crypto/err/err.c
> +--- crypto/err/err.c
> ++++ crypto/err/err.c
> +@@ -1072,7 +1072,12 @@ void ERR_set_error_data(char *data, int flags)
> +     es->err_data_flags[i] = flags;
> + }
> +
> ++/* Add EFIAPI for UEFI version. */
> ++#if defined(OPENSSL_SYS_UEFI)
> ++void EFIAPI ERR_add_error_data(int num, ...) #else
> + void ERR_add_error_data(int num, ...)
> ++#endif
> + {
> +     va_list args;
> +     va_start(args, num);
> +diff U3 crypto/err/err.h crypto/err/err.h
> +--- crypto/err/err.h
> ++++ crypto/err/err.h
> +@@ -344,7 +344,14 @@ void ERR_print_errors_fp(FILE *fp);  # ifndef 
> +OPENSSL_NO_BIO  void ERR_print_errors(BIO *bp);  # endif
> ++
> ++/* Add EFIAPI for UEFI version. */
> ++#if defined(OPENSSL_SYS_UEFI)
> ++void EFIAPI ERR_add_error_data(int num, ...); #else
> + void ERR_add_error_data(int num, ...);
> ++#endif
> ++
> + void ERR_add_error_vdata(int num, va_list args); void 
> + ERR_load_strings(int lib, ERR_STRING_DATA str[]); void 
> + ERR_unload_strings(int lib, ERR_STRING_DATA str[]);
> --
> 1.8.3.1
>
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