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X-CSE-ConnectionGUID: KukVjSHcQXO1WSCyoIB3Rg== X-CSE-MsgGUID: R1bO/+RrSAeUbAHVt5v3OQ== X-IronPort-AV: E=McAfee;i="6800,10657,11574"; a="72225952" X-IronPort-AV: E=Sophos;i="6.18,320,1751266800"; d="scan'208";a="72225952" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by orvoesa103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Oct 2025 15:22:44 -0700 X-CSE-ConnectionGUID: Bt/dy22rSqeuMX6KlTBusw== X-CSE-MsgGUID: m4abq4raROmTD4NL1tV3/g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,320,1751266800"; d="scan'208";a="179260015" Received: from spandruv-mobl4.amr.corp.intel.com (HELO [10.125.110.101]) ([10.125.110.101]) by orviesa010-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Oct 2025 15:22:43 -0700 Message-ID: Date: Mon, 6 Oct 2025 15:22:42 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] x86/mm: fix overflow in __cpa_addr To: Rik van Riel , syzbot Cc: bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, kas@kernel.org, kevin.brodsky@arm.com, linux-kernel@vger.kernel.org, luto@kernel.org, mingo@redhat.com, peterz@infradead.org, rppt@kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, wei.liu@kernel.org, x86@kernel.org, yu-cheng.yu@intel.com References: <68e2ff90.050a0220.2c17c1.0038.GAE@google.com> <20251005234805.6fedaccb@fangorn> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 10/5/25 20:48, Rik van Riel wrote: > Signed-off-by: Rik van Riel > Cc: stable@kernel.org > Reported-by: syzbot+afec6555eef563c66c97@syzkaller.appspotmail.com > Fixes: 86e6815b316e ("x86/mm: Change cpa_flush() to call flush_kernel_range() directly") Hi Folks, Thanks for the quick fix here! But this doesn't need to go to stable, right? I think it just went to Linus during the merge window last week so it never made it to a release, so won't need a stable backport.