[PATCH 1/2] word-at-a-time: check the first byte in load_unaligned_zeropad()

[Qiliang Yuan]

On Tue, 20 Oct 2026 12:58:54 -0400, Andrey Ryabinin wrote:
>> +	/* open-coded instrument_read(addr, 1), as in read_word_at_a_time() */
>
> Why it's open-coded ?

For the same reason as read_word_at_a_time(): commit ece69af2ede1
("rwonce: handle KCSAN like KASAN in read_word_at_a_time()") open-coded
it "to avoid having to pull the entire instrumented.h header into
rwonce.h". I kept the six asm/word-at-a-time.h headers to the same two
small headers, kasan-checks.h and kcsan-checks.h, rather than pulling in
instrumented.h with linux/bug.h and kmsan-checks.h.

Thanks,
Qiliang