linux-kernel - Re: [PATCH v2] certs: Fix wrong kconfig option used for x509_revocation

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Date:   Wed, 10 Mar 2021 21:44:07 +0200
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Eric Snowberg <eric.snowberg@...cle.com>
Cc:     rdunlap@...radead.org, dhowells@...hat.com, nathan@...nel.org,
        dwmw2@...radead.org, keyrings@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] certs: Fix wrong kconfig option used for
 x509_revocation_list

On Wed, Mar 10, 2021 at 09:43:33PM +0200, Jarkko Sakkinen wrote:
> On Thu, Mar 04, 2021 at 12:50:30PM -0500, Eric Snowberg wrote:
> > Fix a build issue when x509_revocation_list is not defined.
> > 
> > $ make ARCH=x86_64 O=build64 all
> > 
> >  EXTRACT_CERTS   ../
> > At main.c:154:
> > - SSL error:0909006C:PEM routines:get_name:no start line: crypto/pem/pem_lib.c:745
> > extract-cert: ../: Is a directory
> > make[2]: [../certs/Makefile:119: certs/x509_revocation_list] Error 1 (ignored)
> > 
> > When the new CONFIG_SYSTEM_REVOCATION_LIST was added [1], it was not carried
> > into the code for preloading the revocation certificates [2].  Change from
> > using the original CONFIG_SYSTEM_BLACKLIST_KEYRING  to the new
> > CONFIG_SYSTEM_REVOCATION_LIST.
> > 
> > [1] https://lore.kernel.org/keyrings/EDA280F9-F72D-4181-93C7-CDBE95976FF7@oracle.com/T/#m562c1b27bf402190e7bb573ad20eff5b6310d08f
> > [2] https://lore.kernel.org/keyrings/EDA280F9-F72D-4181-93C7-CDBE95976FF7@oracle.com/T/#m07e258bf019ccbac23820fad5192ceffa74fc6ab
> > 
> > Reported-by: Randy Dunlap <rdunlap@...radead.org>
> > Signed-off-by: Eric Snowberg <eric.snowberg@...cle.com>
> 
> Got my first ever chance to try out b4:
> 
> $ b4 am 20210304175030.184131-1-eric.snowberg@...cle.com
> Looking up https://lore.kernel.org/r/20210304175030.184131-1-eric.snowberg%40oracle.com
> Grabbing thread from lore.kernel.org/keyrings
> Analyzing 5 messages in the thread
> ---
> Writing ./v2_20210304_eric_snowberg_certs_fix_wrong_kconfig_option_used_for_x509_revocation_list.mbx
>   ✓ [PATCH v2] certs: Fix wrong kconfig option used for x509_revocation_list
>     + Tested-by: Nathan Chancellor <nathan@...nel.org> (✓ DKIM/kernel.org)
>   ---
>   ✓ Attestation-by: DKIM/oracle.com (From: eric.snowberg@...cle.com)
> ---
> Total patches: 1
> ---
>  Link: https://lore.kernel.org/r/20210304175030.184131-1-eric.snowberg@oracle.com
>  Base: not found
>        git am ./v2_20210304_eric_snowberg_certs_fix_wrong_kconfig_option_used_for_x509_revocation_list.mbx
> 
> Wondering tho, what "Base: not found" means?
> 
> > ---
> > v2 changes:
> >   Use the new config option for extract-cert
> >   Use the new config option when building revocation_certificates.o
> > ---
> >  certs/Makefile    | 5 +++--
> >  certs/blacklist.c | 4 ++++
> >  scripts/Makefile  | 2 +-
> >  3 files changed, 8 insertions(+), 3 deletions(-)
> > 
> > diff --git a/certs/Makefile b/certs/Makefile
> > index e3f4926fd21e..b6db52ebf0be 100644
> > --- a/certs/Makefile
> > +++ b/certs/Makefile
> > @@ -4,7 +4,8 @@
> >  #
> >  
> >  obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o
> > -obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o revocation_certificates.o common.o
> > +obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o
> > +obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o
> >  ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),"")
> >  obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o
> >  else
> > @@ -105,7 +106,7 @@ $(obj)/signing_key.x509: scripts/extract-cert $(X509_DEP) FORCE
> >  	$(call if_changed,extract_certs,$(MODULE_SIG_KEY_SRCPREFIX)$(CONFIG_MODULE_SIG_KEY))
> >  endif # CONFIG_MODULE_SIG
> >  
> > -ifeq ($(CONFIG_SYSTEM_BLACKLIST_KEYRING),y)
> > +ifeq ($(CONFIG_SYSTEM_REVOCATION_LIST),y)
> >  
> >  $(eval $(call config_filename,SYSTEM_REVOCATION_KEYS))
> >  
> > diff --git a/certs/blacklist.c b/certs/blacklist.c
> > index 723b19c96256..c9a435b15af4 100644
> > --- a/certs/blacklist.c
> > +++ b/certs/blacklist.c
> > @@ -21,8 +21,10 @@
> >  
> >  static struct key *blacklist_keyring;
> >  
> > +#ifdef CONFIG_SYSTEM_REVOCATION_LIST
> >  extern __initconst const u8 revocation_certificate_list[];
> >  extern __initconst const unsigned long revocation_certificate_list_size;
> > +#endif
> >  
> >  /*
> >   * The description must be a type prefix, a colon and then an even number of
> > @@ -225,6 +227,7 @@ static int __init blacklist_init(void)
> >   */
> >  device_initcall(blacklist_init);
> >  
> > +#ifdef CONFIG_SYSTEM_REVOCATION_LIST
> >  /*
> >   * Load the compiled-in list of revocation X.509 certificates.
> >   */
> > @@ -237,3 +240,4 @@ static __init int load_revocation_certificate_list(void)
> >  				     blacklist_keyring);
> >  }
> >  late_initcall(load_revocation_certificate_list);
> > +#endif
> > diff --git a/scripts/Makefile b/scripts/Makefile
> > index 983b785f13cb..bd0718f7c493 100644
> > --- a/scripts/Makefile
> > +++ b/scripts/Makefile
> > @@ -11,7 +11,7 @@ hostprogs-always-$(CONFIG_ASN1)				+= asn1_compiler
> >  hostprogs-always-$(CONFIG_MODULE_SIG_FORMAT)		+= sign-file
> >  hostprogs-always-$(CONFIG_SYSTEM_TRUSTED_KEYRING)	+= extract-cert
> >  hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE)	+= insert-sys-cert
> > - hostprogs-always-$(CONFIG_SYSTEM_BLACKLIST_KEYRING)	+= extract-cert
> > +hostprogs-always-$(CONFIG_SYSTEM_REVOCATION_LIST)	+= extract-cert
> >  
> >  HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include
> >  HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include
> > -- 
> > 2.18.4
> > 
> > 
> The patch does not apply:
> 
> $ git am -3 v2_20210304_eric_snowberg_certs_fix_wrong_kconfig_option_used_for_x509_revocation_list.mbx
> Applying: certs: Fix wrong kconfig option used for x509_revocation_list
> error: sha1 information is lacking or useless (certs/Makefile).
> error: could not build fake ancestor
> Patch failed at 0001 certs: Fix wrong kconfig option used for x509_revocation_list
> hint: Use 'git am --show-current-patch=diff' to see the failed patch
> When you have resolved this problem, run "git am --continue".
> If you prefer to skip this patch, run "git am --skip" instead.
> To restore the original branch and stop patching, run "git am --abort".

Tried to apply to Linus' tree 9b1ea29bc0d7b94d420f96a0f4121403efc3dd85

/Jarkko