[OE-core] [PATCH 22/42] linux-yocto: Fix build on ppc with gcc-6

[Bruce Ashfield]

On Wed, May 11, 2016 at 5:30 PM, Khem Raj <raj.khem at gmail.com> wrote:

> On Wed, May 11, 2016 at 2:27 PM, Bruce Ashfield
> <bruce.ashfield at gmail.com> wrote:
> >
> >
> > On Wed, May 11, 2016 at 1:35 PM, Khem Raj <raj.khem at gmail.com> wrote:
> >>
> >> Signed-off-by: Khem Raj <raj.khem at gmail.com>
> >
> >
> >
> > These shouldn't be carried out of tree. So can you drop the linux-yocto
> > changes from the
> > series, and I'll look at getting them integrated later.
>
> I could but, this series switches to using gcc6 which will start to fail.
>

I can coordinate the fix. We just don't carry patches like this for linux
yocto. As you
can see, your series will no longer apply with the consolidated pull
requests that
I just sent.

Bruce


>
> >
> > Bruce
> >
> >>
> >> ---
> >>  ...ace-Fix-out-of-bounds-array-access-warnin.patch | 50
> >> ++++++++++++++++++++++
> >>  meta/recipes-kernel/linux/linux-yocto_4.4.bb       |  4 +-
> >>  2 files changed, 53 insertions(+), 1 deletion(-)
> >>  create mode 100644
> >>
> meta/recipes-kernel/linux/linux-yocto/0001-powerpc-ptrace-Fix-out-of-bounds-array-access-warnin.patch
> >>
> >> diff --git
> >>
> a/meta/recipes-kernel/linux/linux-yocto/0001-powerpc-ptrace-Fix-out-of-bounds-array-access-warnin.patch
> >>
> b/meta/recipes-kernel/linux/linux-yocto/0001-powerpc-ptrace-Fix-out-of-bounds-array-access-warnin.patch
> >> new file mode 100644
> >> index 0000000..05315ed
> >> --- /dev/null
> >> +++
> >>
> b/meta/recipes-kernel/linux/linux-yocto/0001-powerpc-ptrace-Fix-out-of-bounds-array-access-warnin.patch
> >> @@ -0,0 +1,50 @@
> >> +From 32acc1d9a5738b02e8815047af8886978aa40ead Mon Sep 17 00:00:00 2001
> >> +From: Khem Raj <raj.khem at gmail.com>
> >> +Date: Mon, 25 Apr 2016 05:47:01 +0000
> >> +Subject: [PATCH V2] powerpc/ptrace: Fix out of bounds array access
> >> warning
> >> +
> >> +gcc-6 correctly warns about a out of bounds access
> >> +
> >> +arch/powerpc/kernel/ptrace.c:407:24: warning: index 32 denotes an
> offset
> >> greater than size of 'u64[32][1] {aka long long unsigned int[32][1]}'
> >> [-Warray-bounds]
> >> +        offsetof(struct thread_fp_state, fpr[32][0]));
> >> +                        ^
> >> +
> >> +check the end of array instead of beginning of next element to fix this
> >> +
> >> +Signed-off-by: Khem Raj <raj.khem at gmail.com>
> >> +Cc: Kees Cook <keescook at chromium.org>
> >> +Cc: Michael Ellerman <mpe at ellerman.id.au>
> >> +Cc: Segher Boessenkool <segher at kernel.crashing.org>
> >> +---
> >> +Changes from v1 to v2:
> >> +
> >> +- Check for fpr[32] instead of fpr[31][1]
> >> +
> >> + arch/powerpc/kernel/ptrace.c | 4 ++--
> >> + 1 file changed, 2 insertions(+), 2 deletions(-)
> >> +
> >> +diff --git a/arch/powerpc/kernel/ptrace.c
> b/arch/powerpc/kernel/ptrace.c
> >> +index 737c0d0..b38fd08 100644
> >> +--- a/arch/powerpc/kernel/ptrace.c
> >> ++++ b/arch/powerpc/kernel/ptrace.c
> >> +@@ -376,7 +376,7 @@ static int fpr_get(struct task_struct *target,
> const
> >> struct user_regset *regset,
> >> +
> >> + #else
> >> +       BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
> >> +-                   offsetof(struct thread_fp_state, fpr[32][0]));
> >> ++                   offsetof(struct thread_fp_state, fpr[32]));
> >> +
> >> +       return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
> >> +                                  &target->thread.fp_state, 0, -1);
> >> +@@ -404,7 +404,7 @@ static int fpr_set(struct task_struct *target,
> const
> >> struct user_regset *regset,
> >> +       return 0;
> >> + #else
> >> +       BUILD_BUG_ON(offsetof(struct thread_fp_state, fpscr) !=
> >> +-                   offsetof(struct thread_fp_state, fpr[32][0]));
> >> ++                   offsetof(struct thread_fp_state, fpr[32]));
> >> +
> >> +       return user_regset_copyin(&pos, &count, &kbuf, &ubuf,
> >> +                                 &target->thread.fp_state, 0, -1);
> >> +--
> >> +1.9.1
> >> +
> >> diff --git a/meta/recipes-kernel/linux/linux-yocto_4.4.bb
> >> b/meta/recipes-kernel/linux/linux-yocto_4.4.bb
> >> index b74903e..fbb592a 100644
> >> --- a/meta/recipes-kernel/linux/linux-yocto_4.4.bb
> >> +++ b/meta/recipes-kernel/linux/linux-yocto_4.4.bb
> >> @@ -22,7 +22,9 @@ SRCREV_machine ?=
> >> "b18090556c1d1b449233cd555c27a04d38272d6d"
> >>  SRCREV_meta ?= "9ab4787fe2aea2ae0fcc31a5e067eaba19ef64c8"
> >>
> >>  SRC_URI =
> >> "git://
> git.yoctoproject.org/linux-yocto-4.4.git;name=machine;branch=${KBRANCH};
> >> \
> >> -
> >> git://
> git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-4.4;destsuffix=${KMETA}
> "
> >> +
> >> git://
> git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-4.4;destsuffix=${KMETA}
> >> \
> >> +
> >> file://0001-powerpc-ptrace-Fix-out-of-bounds-array-access-warnin.patch \
> >> +"
> >>
> >>  LINUX_VERSION ?= "4.4.3"
> >>
> >> --
> >> 2.8.2
> >>
> >> --
> >> _______________________________________________
> >> Openembedded-core mailing list
> >> Openembedded-core at lists.openembedded.org
> >> http://lists.openembedded.org/mailman/listinfo/openembedded-core
> >
> >
> >
> >
> > --
> > "Thou shalt not follow the NULL pointer, for chaos and madness await
> thee at
> > its end"
>



-- 
"Thou shalt not follow the NULL pointer, for chaos and madness await thee
at its end"
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