linux-hardening - Re: [PATCH v2] riscv/purgatory: Do not use fortified string functions

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Date:   Thu, 01 Jun 2023 13:17:03 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     keescook@...omium.org
CC:     keescook@...omium.org, Paul Walmsley <paul.walmsley@...ive.com>,
        ndesaulniers@...gle.com, linux-kernel@...r.kernel.org,
        gustavoars@...nel.org, linux@...mhuis.info,
        heiko.stuebner@...ll.eu, linux-hardening@...r.kernel.org,
        aou@...s.berkeley.edu, linux-riscv@...ts.infradead.org,
        joanbrugueram@...il.com, masahiroy@...nel.org,
        Conor Dooley <conor.dooley@...rochip.com>,
        ajones@...tanamicro.com, hi@...ssa.is
Subject:     Re: [PATCH v2] riscv/purgatory: Do not use fortified string functions

On Thu, 01 Jun 2023 11:27:03 PDT (-0700), keescook@...omium.org wrote:
> On Thu, 1 Jun 2023 09:00:28 -0700, Kees Cook wrote:
>> With the addition of -fstrict-flex-arrays=3, struct sha256_state's
>> trailing array is no longer ignored by CONFIG_FORTIFY_SOURCE:
>>
>> struct sha256_state {
>>         u32 state[SHA256_DIGEST_SIZE / 4];
>>         u64 count;
>>         u8 buf[SHA256_BLOCK_SIZE];
>> };
>>
>> [...]
>
> Applied to for-next/hardening, thanks!
>
> [1/1] riscv/purgatory: Do not use fortified string functions
>       https://git.kernel.org/kees/c/ca2ca08f479d

Sorry, I'd just applied this to riscv/fixes as well.  I can drop it if 
you want?  I was going to send a PR tomorrow, just LMK.