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1af424b154
Restore the dependency of the architecture-optimized Poly1305 code on !KMSAN. It was dropped by commitb646b782e5("lib/crypto: poly1305: Consolidate into single module"). Unlike the other hash algorithms in lib/crypto/ (e.g., SHA-512), the way the architecture-optimized Poly1305 code is integrated results in assembly code initializing memory, for several different architectures. Thus, it generates false positive KMSAN warnings. These could be suppressed with kmsan_unpoison_memory(), but it would be needed in quite a few places. For now let's just restore the dependency on !KMSAN. Note: this should have been caught by running poly1305_kunit with CONFIG_KMSAN=y, which I did. However, due to an unrelated KMSAN bug (https://lore.kernel.org/r/20251022030213.GA35717@sol/), KMSAN currently isn't working reliably. Thus, the warning wasn't noticed until later. Fixes:b646b782e5("lib/crypto: poly1305: Consolidate into single module") Reported-by: syzbot+01fcd39a0d90cdb0e3df@syzkaller.appspotmail.com Closes: https://lore.kernel.org/r/68f6a48f.050a0220.91a22.0452.GAE@google.com/ Reported-by: Pei Xiao <xiaopei01@kylinos.cn> Closes: https://lore.kernel.org/r/751b3d80293a6f599bb07770afcef24f623c7da0.1761026343.git.xiaopei01@kylinos.cn/ Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20251022033405.64761-1-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>