On Tue, Jun 23, 2015 at 05:00:07PM +0200, Laszlo Ersek wrote:
> On 06/23/15 16:16, Long, Qin wrote:
> > Reviewed-by: Qin Long <qin.l...@intel.com>
> 
> Thanks for the reviews. Since this issue breaks secure boot builds,
> generally speaking, and because the pkg maintainer reviewed the patch, I
> committed it at once: SVN r17689.
> 
> I hope that Gary won't mind my doing that before his feedback. (In
> retrospect the fix should be quite non-controversial; it just restores
> two earlier hunks, with changed pathnames.)
Not at all :)
I'm lucky because you caught this bug before I merge the code into shim.

Thanks,

Gary Lin
> 
> Thanks!
> Laszlo
> 
> > Best Regards & Thanks,
> > LONG, Qin
> > 
> > -----Original Message-----
> > From: Long, Qin [mailto:qin.l...@intel.com] 
> > Sent: Tuesday, June 23, 2015 10:12 PM
> > To: Ard Biesheuvel; Laszlo Ersek
> > Cc: edk2-devel@lists.sourceforge.net
> > Subject: Re: [edk2] [PATCH] CryptoPkg: OpensslLib: reintroduce EFIAPI for 
> > ERR_add_error_data()
> > 
> > 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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> 

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