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[94.189.140.39]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-442d67d5c7bsm176462675e9.4.2025.05.13.09.43.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 13 May 2025 09:43:59 -0700 (PDT) Message-ID: <53a86990-0aa5-4816-a252-43287f3451b8@gmail.com> Date: Tue, 13 May 2025 18:43:56 +0200 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 v8 0/1] kasan: Avoid sleepable page allocation from atomic context To: Alexander Gordeev , Andrew Morton , Daniel Axtens , Harry Yoo Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, kasan-dev@googlegroups.com, linux-s390@vger.kernel.org, stable@vger.kernel.org References: Content-Language: en-US From: Andrey Ryabinin In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 5/13/25 5:21 PM, Alexander Gordeev wrote: > Hi All, > > Chages since v7: > - drop "unnecessary free pages" optimization > - fix error path page leak > > Chages since v6: > - do not unnecessary free pages across iterations > Have you looked at boot failure report from kernel test robot ? https://lkml.kernel.org/r/202505121313.806a632c-lkp@intel.com I think the report is for v6 version, but I don't see evidence that it was addressed, so the v8 is probably affected as well? > Chages since v5: > - full error message included into commit description > > Chages since v4: > - unused pages leak is avoided > > Chages since v3: > - pfn_to_virt() changed to page_to_virt() due to compile error > > Chages since v2: > - page allocation moved out of the atomic context > > Chages since v1: > - Fixes: and -stable tags added to the patch description > > Thanks! > > Alexander Gordeev (1): > kasan: Avoid sleepable page allocation from atomic context > > mm/kasan/shadow.c | 77 ++++++++++++++++++++++++++++++++++++++--------- > 1 file changed, 63 insertions(+), 14 deletions(-) >