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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id h129-20020a625387000000b00561ed54aa53sm4353776pfb.97.2022.10.08.20.41.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Oct 2022 20:41:15 -0700 (PDT) Date: Sat, 8 Oct 2022 20:41:14 -0700 From: Kees Cook To: "Jason A. Donenfeld" Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev, Andreas Noever , Andrew Morton , Andy Shevchenko , Borislav Petkov , Catalin Marinas , Christoph =?iso-8859-1?Q?B=F6hmwalder?= , Christoph Hellwig , Christophe Leroy , Daniel Borkmann , Dave Airlie , Dave Hansen , "David S . Miller" , Eric Dumazet , Florian Westphal , Greg Kroah-Hartman , "H . Peter Anvin" , Heiko Carstens , Helge Deller , Herbert Xu , Huacai Chen , Hugh Dickins , Jakub Kicinski , "James E . J . Bottomley" , Jan Kara , Jason Gunthorpe , Jens Axboe , Johannes Berg , Jonathan Corbet , Jozsef Kadlecsik , KP Singh , Marco Elver , Mauro Carvalho Chehab , Michael Ellerman , Pablo Neira Ayuso , Paolo Abeni , Peter Zijlstra , Richard Weinberger , Russell King , Theodore Ts'o , Thomas Bogendoerfer , Thomas Gleixner , Thomas Graf , Ulf Hansson , Vignesh Raghavendra , WANG Xuerui , Will Deacon , Yury Norov , dri-devel@lists.freedesktop.org, kasan-dev@googlegroups.com, kernel-janitors@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-crypto@vger.kernel.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-media@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, linux-nvme@lists.infradead.org, linux-parisc@vger.kernel.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, loongarch@lists.linux.dev, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH v5 0/7] treewide cleanup of random integer usage Message-ID: <202210082028.692DFA21@keescook> References: <20221008055359.286426-1-Jason@zx2c4.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20221008055359.286426-1-Jason@zx2c4.com> ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1665286877; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Jc9wqi9hH7sDAuXmZMPHByefEvgO0MbR3+ZEqDB7Wuk=; b=GCwdVaAxDxhv2mI9Iv5E7lMpK5RqJ6Dv2XD9QifJos8JErJ9jA8hNPNZFeF4noEO1FBwDi vaTrBpL8EChtP5Cn3uoOGLdd67/+3ATSOAl5wIOB70AZnPgoUHCgdMjCFCf/8nxZ59Pehe ZnUyIyEXsdB4nA1OcXwk7RvIS//39U0= ARC-Authentication-Results: i=1; imf29.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=ZhbF7auk; spf=pass (imf29.hostedemail.com: domain of keescook@chromium.org designates 209.85.215.178 as permitted sender) smtp.mailfrom=keescook@chromium.org; dmarc=pass (policy=none) header.from=chromium.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1665286877; a=rsa-sha256; cv=none; b=TCMhijAQDhKsbmwq7hmKicC1d4SEQoqH5iicTF9nvA+P0/WhmyUOXgiACfJGoNng5t0R7Q m9EuixvlkYeztbyxANbfRu2cwHSWshCsquGZ67QsnMNe6EpIGhasweeTMsE7ild3uXbvVC QwfURC2WC7OyxOvOKsrGzr3erLkHf+k= Authentication-Results: imf29.hostedemail.com; dkim=pass header.d=chromium.org header.s=google header.b=ZhbF7auk; spf=pass (imf29.hostedemail.com: domain of keescook@chromium.org designates 209.85.215.178 as permitted sender) smtp.mailfrom=keescook@chromium.org; dmarc=pass (policy=none) header.from=chromium.org X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: q7us8ekf18oc5a8qyo1koqkyg41agagg X-Rspamd-Queue-Id: 9C93A120026 X-HE-Tag: 1665286877-305341 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Oct 07, 2022 at 11:53:52PM -0600, Jason A. Donenfeld wrote: > This is a five part treewide cleanup of random integer handling. The > rules for random integers are: Reviewing the delta between of my .cocci rules and your v5, everything matches, except for get_random_int() conversions for files not in your tree: diff --git a/drivers/gpu/drm/tests/drm_buddy_test.c b/drivers/gpu/drm/tests/drm_buddy_test.c index 7a2b2d6bc3fe..62f69589a72d 100644 --- a/drivers/gpu/drm/tests/drm_buddy_test.c +++ b/drivers/gpu/drm/tests/drm_buddy_test.c @@ -729,7 +729,7 @@ static void drm_test_buddy_alloc_limit(struct kunit *test) static int drm_buddy_init_test(struct kunit *test) { while (!random_seed) - random_seed = get_random_int(); + random_seed = get_random_u32(); return 0; } diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c index 659d1af4dca7..c4b66eeae203 100644 --- a/drivers/gpu/drm/tests/drm_mm_test.c +++ b/drivers/gpu/drm/tests/drm_mm_test.c @@ -2212,7 +2212,7 @@ static void drm_test_mm_color_evict_range(struct kunit *test) static int drm_mm_init_test(struct kunit *test) { while (!random_seed) - random_seed = get_random_int(); + random_seed = get_random_u32(); return 0; } So, I guess I mean to say that "prandom: remove unused functions" is going to cause some pain. :) Perhaps don't push that to -next, and do a final pass next merge window to catch any new stuff, and then send those updates and the removal before -rc1 closes? -- Kees Cook