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Donenfeld" Subject: Re: [PATCH v6 1/7] treewide: use prandom_u32_max() when possible, part 1 Message-ID: References: <20221010230613.1076905-1-Jason@zx2c4.com> <20221010230613.1076905-2-Jason@zx2c4.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20221010230613.1076905-2-Jason@zx2c4.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: e2CZuGMXbt8P1Ahw-KHczcjQF2nFCX-z X-Proofpoint-ORIG-GUID: wAGriSa-6j8SChamwbK6r6GTq7mVMlOg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-10-11_03,2022-10-10_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 clxscore=1011 mlxscore=0 spamscore=0 mlxlogscore=427 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2210110053 X-Mailman-Approved-At: Tue, 11 Oct 2022 23:06:43 +1100 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-wireless@vger.kernel.org, Ulf Hansson , x86@kernel.org, Jan Kara , Vignesh Raghavendra , linux-doc@vger.kernel.org, Peter Zijlstra , Catalin Marinas , Dave Hansen , kernel-janitors@vger.kernel.org, KP Singh , dri-devel@lists.freedesktop.org, patches@lists.linux.dev, linux-mm@kvack.org, Eric Dumazet , netdev@vger.kernel.org, linux-mtd@lists.infradead.org, kasan-dev@googlegroups.com, "H . Peter Anvin" , Andreas Noever , WANG Xuerui , Will Deacon , Christoph Hellwig , linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, Mauro Carvalho Chehab , Herbert Xu , Daniel Borkmann , Jonathan Corbet , linux-rdma@vger.kernel.org, Helge Deller , Huacai Chen , Hugh Dickins , Russell King , Jozsef Kadlecsik , Jason Gunthorpe , "Darrick J . Wong" , Dave Airlie , Paolo Abeni , Pablo Neira Ayuso , linux-media@vger.kernel.org, Marco Elver , Kees Cook , Yury Norov , "James E . J . Bottomley" , linux-um@lists.infradead.org, linux-mips@vger.kernel.org, linux-block@vger.kernel.org, Richard Weinberger , Borislav Petkov , linux-nvme@lists.infradead.org, loongarch@lists.linux.dev, Jakub Kicinski , Thomas Gleixner , Andy Shevchenko , Johannes Berg , linux-arm-kernel@lists.infradead.org, Jens Axboe , linux-mmc@vger.kernel .org, Thomas Bogendoerfer , Theodore Ts'o , linux-parisc@vger.kernel.org, Greg Kroah-Hartman , linux-usb@vger.kernel.org, Florian Westphal , linux-kernel@vger.kernel.org, Christoph =?iso-8859-1?Q?B=F6hmwalder?= , linux-crypto@vger.kernel.org, Jan Kara , Thomas Graf , linux-fsdevel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S . Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Mon, Oct 10, 2022 at 05:06:07PM -0600, Jason A. Donenfeld wrote: > Rather than incurring a division or requesting too many random bytes for > the given range, use the prandom_u32_max() function, which only takes > the minimum required bytes from the RNG and avoids divisions. This was ... > Reviewed-by: Greg Kroah-Hartman > Reviewed-by: Kees Cook > Reviewed-by: Yury Norov > Reviewed-by: KP Singh > Reviewed-by: Jan Kara # for ext4 and sbitmap > Reviewed-by: Christoph Böhmwalder # for drbd > Acked-by: Ulf Hansson # for mmc > Acked-by: Darrick J. Wong # for xfs > Signed-off-by: Jason A. Donenfeld > --- > arch/s390/kernel/process.c | 2 +- > arch/s390/kernel/vdso.c | 2 +- For s390: Acked-by: Heiko Carstens