Hi all,

Today's linux-next merge of the kspp tree got a conflict in:

  drivers/misc/lkdtm/Makefile

between commit:

  9cf51a6d1de0 ("Makefile: remove redundant tool coverage variables")

from the kbuild tree and commit:

  fb28a8862dc4 ("lkdtm: Disable CFI checking for perms functions")

from the kspp tree.

I fixed it up (see below) and can carry the fix as necessary. This
is now fixed as far as linux-next is concerned, but any non trivial
conflicts should be mentioned to your upstream maintainer when your tree
is submitted for merging.  You may also want to consider cooperating
with the maintainer of the conflicting tree to minimise any particularly
complex conflicts.

-- 
Cheers,
Stephen Rothwell

diff --cc drivers/misc/lkdtm/Makefile
index 33fe61152a15,b28701138b4b..000000000000
--- a/drivers/misc/lkdtm/Makefile
+++ b/drivers/misc/lkdtm/Makefile
@@@ -15,7 -15,11 +15,7 @@@ lkdtm-$(CONFIG_PPC_64S_HASH_MMU)	+= pow
  
  KASAN_SANITIZE_stackleak.o	:= n
  
- CFLAGS_REMOVE_rodata.o			+= $(CC_FLAGS_LTO) $(RETHUNK_CFLAGS)
 -KASAN_SANITIZE_rodata.o			:= n
 -KCSAN_SANITIZE_rodata.o			:= n
 -KCOV_INSTRUMENT_rodata.o		:= n
 -OBJECT_FILES_NON_STANDARD_rodata.o	:= y
+ CFLAGS_REMOVE_rodata.o			+= $(CC_FLAGS_LTO) $(RETHUNK_CFLAGS) $(CC_FLAGS_CFI)
  
  OBJCOPYFLAGS :=
  OBJCOPYFLAGS_rodata_objcopy.o	:= \

Hi all,

On Mon, 13 May 2024 15:13:16 +1000 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>
> Today's linux-next merge of the kspp tree got a conflict in:
> 
>   drivers/misc/lkdtm/Makefile
> 
> between commit:
> 
>   9cf51a6d1de0 ("Makefile: remove redundant tool coverage variables")
> 
> from the kbuild tree and commit:
> 
>   fb28a8862dc4 ("lkdtm: Disable CFI checking for perms functions")
> 
> from the kspp tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
> 
> 
> diff --cc drivers/misc/lkdtm/Makefile
> index 33fe61152a15,b28701138b4b..000000000000
> --- a/drivers/misc/lkdtm/Makefile
> +++ b/drivers/misc/lkdtm/Makefile
> @@@ -15,7 -15,11 +15,7 @@@ lkdtm-$(CONFIG_PPC_64S_HASH_MMU)	+= pow
>   
>   KASAN_SANITIZE_stackleak.o	:= n
>   
> - CFLAGS_REMOVE_rodata.o			+= $(CC_FLAGS_LTO) $(RETHUNK_CFLAGS)
>  -KASAN_SANITIZE_rodata.o			:= n
>  -KCSAN_SANITIZE_rodata.o			:= n
>  -KCOV_INSTRUMENT_rodata.o		:= n
>  -OBJECT_FILES_NON_STANDARD_rodata.o	:= y
> + CFLAGS_REMOVE_rodata.o			+= $(CC_FLAGS_LTO) $(RETHUNK_CFLAGS) $(CC_FLAGS_CFI)
>   
>   OBJCOPYFLAGS :=
>   OBJCOPYFLAGS_rodata_objcopy.o	:= \

This is now a conflict between the kbuild tree and Linus' tree.

-- 
Cheers,
Stephen Rothwell

On Mon, May 13, 2024 at 03:13:16PM +1000, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next merge of the kspp tree got a conflict in:
> 
>   drivers/misc/lkdtm/Makefile
> 
> between commit:
> 
>   9cf51a6d1de0 ("Makefile: remove redundant tool coverage variables")

Ah! Interesting. I have replied to that tread now:
https://lore.kernel.org/lkml/202405131136.73E766AA8@keescook/

> 
> from the kbuild tree and commit:
> 
>   fb28a8862dc4 ("lkdtm: Disable CFI checking for perms functions")
> 
> from the kspp tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This

Thanks, this looks correct to me.

-- 
Kees Cook