From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr2-f35.google.com (mail-wr2-f35.google.com [74.125.225.99]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D7B5B242D88 for ; Sun, 27 Sep 2026 18:35:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.225.99 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790534122; cv=none; b=u3JNg/hmnpkpk6E0Jq1FdR4XfG8FH9eEaJYWyW76m6e0Q1rTp+IT/vVcQC+LdLU2TD8EPjw0YBjgFgZDVt9QVHXip5v2QnBXU+q3WY/TUxWJ8PXpkCOJYnH90Il0Tr5GAthHwMLzFcJ6ueOvhH9LmGU30a0Y2LvTvEtezxFiAGo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790534122; c=relaxed/simple; bh=EXX7jqvZYLnEQMm8FZbzal6MRrKj4Q6wzO3n8gCmvYE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=p6OlYhT1dHuxw0lyXTjhzUYT88xiVuviLRL+oyNvpqIXWJkoJUOKnWa23VKIZpzL2qoo+EXY0hhRuG/r3mQmhiJ7Rbpcwljh5Lo0wBKGaGs8FJYzWW2U566Q3VVVCYQJkg1kSBEeuP8/LoxVJqoE6SeEotXwggU4FkT7Wc5LhfM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Jaf/9ODd; arc=none smtp.client-ip=74.125.225.99 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Jaf/9ODd" Received: by mail-wr2-f35.google.com with SMTP id ffacd0b85a97d-4887f690df6so1556179f8f.1 for ; Sun, 27 Sep 2026 11:35:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1790534119; x=1791138919; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=d3btJEsbUCZDnVE9CRXhr6o73+2IGPLa/zULNpIdkJ4=; b=Jaf/9ODd+5ToflEFjmTC7DjCtFGBQXtdJlQKT5EIoQXbZvZMbij7Mrl4emaIuhJfLM CeJqNoiH2nQY2LOnsqg8mt83NK/vZBLeP6Jyav3809orvMkfURhphdIvJyJviSHdAj14 jKeuG9uEOrvStAe9J7rdV4ystmNUvw+OHWefw9m3dbDwM0N17KT3xnagNjFCBvv4KZAu Ep8l7HcDc3KcxPdXGitSHJGlKXtZ5NdH/7akZ3xa1lOllw2PMynr3HB12T3Db+dbI8oX QUQ1PKNpbQSF5cJ1BUB12rz8kmhz/BaQ6g8ZnAe3opclAuLbzJDncI2U5wWr69BdzHdM FkDg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790534119; x=1791138919; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=d3btJEsbUCZDnVE9CRXhr6o73+2IGPLa/zULNpIdkJ4=; b=Y47G2hLLoG+SU1Te6QCcdpSRvvLmgfSgN7r2U7OgdmxP1WcYx64qa6g+idMvCLG2xp lWYSJu/W1PZj4wCAZ/6yO/E48qoruWv9nS2isdeLjcIee38DnJTnlMNOJQTzMK2AhEc/ hQSvXjCNpKKuM4jcyr494tWNFKyV3t4BcXkDAw6zs3ZLaatNfqq0Yzm9cLYZhbvoPmec jAtAGaZ+jYF1kzbeBo3xtvhlHsX+omLjspLkvwqdYK8V/GaocgzDsLCePdwM8gtZg67O h7VYoLcdTa3Z5mcjsfXRO+1W90OA8bbjR/1UlOLULYG3jkTRB4cjcaqxMa4GfX4fzD86 pTZA== X-Forwarded-Encrypted: i=1; AKwUvBwpPiqswHTgMhQHqYSahw3HxG6TsXfgf8OtmevNmy2oNA5jaRjSNLT2cX6HhDuAdXsIh16IPJPwsQ==@vger.kernel.org X-Gm-Message-State: AFq9FYKvqlQdLS7IS9q4aWItfn61AhSJGgcOuAK581fVpdBJN+hBChmG 9HYS9WZ5vPf/3TtcFUwp0kTlTsBoB4wAu4K59fdJou35Fv1PWET7mBuH X-Gm-Gg: AYBFou2LiWrdGINrkotlcz4iXXYu5mx9+GyeDcKK52TtX9pcZBnU+cC00uCZpM3VaaP 3qbMYITjXiQhwk7FAkztUomcfI8Q8gi0FzXQMa81f/tzaZtoTifNKWnni2PZjDpo4atzfK4YIXw raGp5i5mK85ArMxHToeOl/o6LtjWuzY4x76W7nGSNkm9oZUbwhgh6fGKA4Dexi+/+VrcUe5a7oA gZBQnJKEgFUJLxL13Yh0BgGddW0sdHvGgRTyCneo+dgjD0WszGF6Mj9eWhJFl1pxqSAqImEqXsw w9uQhnqPI8YNkNv3olG4pr7mGsTARPZGp+z2l0bMX/v4YOflQhAkJnH06EuuUN1FGMAe5EZJUt0 Amrql8QTRk+Q5RkPRTVjI62fOMYky+RlL9J/RkE2rHGURHF/oeagsa7jDwMfJt0ktUFCe8P1K8B o5fpILUwpjDmiwt3TaEnEQi0uaGicXJSTDg0fQpQfCfZEXOS7ptQ/z2CWznwtKw3cEaifzLPkRn MToshD2U2DzrMjHD9VsHgggl4XVbzxYAd8U58Cq2wX1zEFBntDssyeGB8bjYdWZV3KM+q6S2T4a /iDeKuwPBS0tqCMowPk2XTas47mnwjw1fArOQ6vctFhnwl/JrWOAqDC5cwl4R5Ddan9s7QsxHpa ilDA= X-Received: by 2002:a05:6000:490b:b0:487:27f6:a4ce with SMTP id ffacd0b85a97d-488828c8ad6mr10111964f8f.30.1790534118745; Sun, 27 Sep 2026 11:35:18 -0700 (PDT) Received: from unknown748F3CBA5068 (dynamic-2a02-3100-b2e6-5301-2072-0420-f831-ed4e.310.pool.telefonica.de. [2a02:3100:b2e6:5301:2072:420:f831:ed4e]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-489bd7b1df0sm1001928f8f.31.2026.09.27.11.35.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Sep 2026 11:35:18 -0700 (PDT) Date: Sun, 27 Sep 2026 20:35:16 +0200 From: Karl Mehltretter To: John Paul Adrian Glaubitz Cc: Yoshinori Sato , Rich Felker , linux-sh@vger.kernel.org, Muchun Song , Oscar Salvador , David Hildenbrand , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] sh: mm: fix hugetlb on SH-4 Message-ID: References: <20260926183904.76186-1-kmehltretter@gmail.com> <9b75aa51e19f9c0f5c97ac02cfc0948ab5bbf279.camel@physik.fu-berlin.de> Precedence: bulk X-Mailing-List: linux-sh@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9b75aa51e19f9c0f5c97ac02cfc0948ab5bbf279.camel@physik.fu-berlin.de> On Sat, Sep 26, 2026 at 08:43:45PM +0100, John Paul Adrian Glaubitz wrote: > Thanks for the patch! This should definitely be tested on real hardware > and I think it's a good reason to test this on my SH7785LCR which wouldn't > boot on anything newer than 6.5.0. > Hi Adrian, Testing with real hardware is very cool! Maybe I will get some SH hardware myself one day. For now you've motivated me to do a QEMU SuperH fork with more features, with a lot of help from my LLM agent: https://github.com/kmehltretter82/qemu-superh I will send some bug fix patches based on it soon, hopefully also fixing your 6.5 problem. I believe it is an old heap overflow in the SH intc code that only started to crash when sh7785lcr_defconfig switched from SLAB to SLUB in 6.5. Karl