[Buildroot] [PATCH 1/1] board/arcturus/ppc-ucp1020 new gcc-6.x Linux kernel build fix

Thomas Petazzoni thomas.petazzoni at free-electrons.com
Thu Jul 13 17:30:59 UTC 2017


Hello,

On Thu, 13 Jul 2017 12:38:17 -0400, Oleksandr Zhadan wrote:
> Add the Linux-3.18 patch "powerpc/ptrace: Fix out of bounds array access warning" to the board/arcturus/ppc-ucp1020 BSP
> 
> " 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: Oleksandr Zhadan <oleks at arcturusnetworks.com>

Do you have a good reason to stick with the 4.1 Linux kernel in this
defconfig, instead of upgrading to a newer kernel version that has
commit 1e407ee3b21f981140491d5b8a36422979ca246f ? For example, using
Linux 4.9 would solve this.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com



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