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protocol error got as reply type byte #2829

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Open
protocol error got as reply type byte#2829
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michael-grunder

Description

@tillkruss
tillkruss
opened on Apr 20, 2026

For transparency and searchability.

[19-Apr-2026 01:06:04 UTC] protocol error, got 'O' as reply type byte
[19-Apr-2026 01:06:04 UTC] protocol error, got 'a' as reply type byte
[19-Apr-2026 01:06:04 UTC] protocol error, got '
[19-Apr-2026 01:06:04 UTC] protocol error, got '
[19-Apr-2026 01:06:04 UTC] protocol error, got 'm' as reply type byte

final class Kaboom {
    public function __wakeup(): void {
        global $redis;
        $redis->pipeline();
        $redis->mget(['payload']);
        $redis->exec();
    }
}

$redis = new Redis(['host' => 'localhost', 'port' => 6379]);
$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);

$redis->mset(['string:1' => 'foo', 'payload' => new Kaboom()]);
$redis->mget(['payload', 'string:1']);

Activity

  1. tillkruss commented on Apr 20, 2026

    @tillkruss
    tillkruss
    on Apr 20, 2026
    MemberAuthor

    Linked to woocommerce/woocommerce#64232

  2. michael-grunder
    self-assigned this
    on Apr 20, 2026

  3. michael-grunder commented on Apr 20, 2026

    @michael-grunder
    michael-grunder
    on Apr 20, 2026
    Member

    That's a great reproducer, how'd you come up with it? 😄

  4. tillkruss commented on Apr 20, 2026

    @tillkruss
    tillkruss
    on Apr 20, 2026
    MemberAuthor

    That's a great reproducer, how'd you come up with it? 😄

    Some 🧙‍♂️ in a random slack channel posted it.

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