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Wed, 19 Feb 2025 21:11:06 +0100 Message-ID: <8923aaae-becd-489a-bfe1-8c1c569d8d48@web.de> Date: Wed, 19 Feb 2025 21:10:53 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: Josh Don , kernel-janitors@vger.kernel.org, Ingo Molnar , Juri Lelli , Peter Zijlstra , Vincent Guittot Cc: LKML , Ben Segall , Chengming Zhou , Daniel Bristot de Oliveira , Dietmar Eggemann , K Prateek Nayak , Mel Gorman , Steven Rostedt , Valentin Schneider References: <20250210195117.1074569-1-joshdon@google.com> Subject: Re: [PATCH] sched: fix potential use-after-free with cfs bandwidth Content-Language: en-GB From: Markus Elfring In-Reply-To: <20250210195117.1074569-1-joshdon@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:X3d0E9WrjagRkba4BQm0pfUD+YOsvBTW2m2USxRtZE4oOAsiyi/ n8JSJAmZ+gc5ElVU0TBeloHmbm0LEk5tfjHFdNr4DddiSWCz0F0osNqophwlK/1cs1w84ka ow40DtBp4665Y94uxzt5Q+aQjEtJJO8Usu+xGhxKLyPPY94Nu9Ptc7Nh/1p8nOsmbb9ArvG ybxx5xNdhE2aGllDcVyyQ== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:MAC5JS6jmxM=;mXe69x3zsDUjeVuwGYCr1umOBbN EYoBsIrLDJVE0kx5f08ZH2ujWwi3HFKVAjaQ7C9JGE/82OO8yn5QY17EuYHl8xD3pHclp5ZAd Xv0odmOgC8Xn9XXIHPDxEXOiv4oVwHjzgrNxAI9ViEkUCNfOBxSNHqSocxyMLbQTcb+RXwK24 kT5+BEmv6MGkvpUODd1TPHIExeZ0jJ0uIKhvnqh4qwQ1eh2ntgOkBkpxjrK7clmT7yQ5rBllS ykbHazLRVEP+UevlridiRj+P1bUZWaNZm9Or9GrC7GYtJhxMm07wIqvHGppfHRiTUuFgKn9Bn fuqD26bEh/2PmqKh63VUit91Z6OV78D1AyvymppuA4c/x5rZHaVFewuz8CSzcSu6lERqMafL4 f8F7eoUhIk753QL185elJKmzgKS39+sAoknJ8p4xIRU1Ch5BH1byuZLAwX6toSiUliawyfQjd t6aGlFMIgGtteK+Om4HyYHSwXxzgSECmcBMpenYOc/8G5Mem3M42SAarvFJ3oX4iCM4D5NyHg qemFJL/UCNTO19X0oaBgoJtEfvzqGIO1m5dRyxgRlmmWm+4HFHgDR3+NSficsrtnry3T1h7/g rQCsJLJqPJ1Fy98at0NE2Werl6iJF5eNe7cWjKvB9Vy3S0vBGPUUP9Re1wWMtZv5RXlxoqpwL 2/o7f6sN8ywA5c4OPsZJ7trsz4XBUxsOZ0u6qhS8mkslPsL8ilZWEXVK7DC+NjRqj15FbI9Jv gjlrDEwgfBUq8GeSxWFtRy/ou3ATf3ZkGxWPjxZtii5yRgKthjgl9Y87WFAp4iXbKBTy2cMeB 9Nw+Aga0dfiqoFlSekloCImBiDy3EJhinpt4Qf8EGVnBUNg80Tolq35hYCmBO17G1hxMg4HWj Z53uCHnjaF8xrcBHq1GpHj8ryrevxHCB+IxvrjQl791dLdaJfNutrOXUw5qVjay83oOgw3MaY +JCW14aPH86s5MfiY/1pbo0IKFQrLbTld7+e/dJWCwpwZy/KY1Tmw5Wgc5MxkL8xMl3Iy9ROn hc8G0kauWQGHxVgMPDf+2r3BOV6BL/lVNuiu0pBS0EkEYdKBOyezTom7XrSRMaCzWmQWhM7nC ekoQeIR2L8MyXEvm2PoKZYgdthXb7iC95p+0j2CRaXodv5LaJDRGborB+nTsbWjrbSxjidb6H H7/6ud+hxw+RkhO/y2WcTZyTJR3SGGTde9vJxff/O/1Nr5ZZmseXzSce9FbykciWGVyBQUVu0 ib9HntGxx6iA2n2DNYYcz7VaEWnnYSlDh7hLjx+1Hu5Q4kd0JHM82k3yFZ3yNm4ti1RCU2QVO XQwprT1NLkU1l0im+sbbAQYUguO0cQFtxL73cvnzjRgdqXdr1Gg4X2v61YLW2MnrW0I0RR2CZ Mq9z6FrknGJuBWWtTkKLFd1nZ5NjkDCR89nC2bQFoVQo4/ZOpYIzNWYdyxnpuUbo3N6Bd38Zx el/SSb9+RU1CgjulB6UGYQWWvITU= =E2=80=A6 > For full correctness, we should avoid removal from the list until after > we're done unthrottling in __cfsb_csd_unthrottle(). =E2=80=A6 How do you think about to add any tags (like =E2=80=9CFixes=E2=80=9D and = =E2=80=9CCc=E2=80=9D) accordingly? https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Do= cumentation/process/submitting-patches.rst?h=3Dv6.14-rc3#n145 Regards, Markus