From patchwork Thu Nov 17 20:29:03 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Jason A. Donenfeld" X-Patchwork-Id: 13047249 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0E40AC4167E for ; Thu, 17 Nov 2022 20:29:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239577AbiKQU3i (ORCPT ); Thu, 17 Nov 2022 15:29:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230287AbiKQU3a (ORCPT ); Thu, 17 Nov 2022 15:29:30 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A54F5112E; Thu, 17 Nov 2022 12:29:28 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 3544EB821F5; Thu, 17 Nov 2022 20:29:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7432BC433C1; Thu, 17 Nov 2022 20:29:22 +0000 (UTC) Authentication-Results: smtp.kernel.org; dkim=pass (1024-bit key) header.d=zx2c4.com header.i=@zx2c4.com header.b="IWVZIkww" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=zx2c4.com; s=20210105; t=1668716959; h=from:from: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jxSBEAA2kkiqo7SIyMfmVBoggp8Ul86vERwZDj3FKZI=; b=IWVZIkwwRl0KXw4dTU+fczN5OEKZ1AhRDZ84brT6zM8QlvF9OHC1qCF+Xu6tjDTEa7zPfy m/c7MQ3/QXPqaHT3/L0iOV7WmGV7fUovSVwfmuhXgV50hSgQmpGez6v1/6hLUDujfPywrX AU8UtocYg6LsZbrhFcsdqrtqFJ66jbs= Received: by mail.zx2c4.com (ZX2C4 Mail Server) with ESMTPSA id 0c0ae169 (TLSv1.3:TLS_AES_256_GCM_SHA384:256:NO); Thu, 17 Nov 2022 20:29:19 +0000 (UTC) From: "Jason A. Donenfeld" To: linux-kernel@vger.kernel.org, patches@lists.linux.dev Cc: "Jason A. Donenfeld" , Kees Cook , Greg Kroah-Hartman , Jakub Kicinski , Russell King , Catalin Marinas , Thomas Bogendoerfer , Heiko Carstens , Herbert Xu , =?utf-8?q?Christoph_B=C3=B6hmwalder?= , Jani Nikula , Jason Gunthorpe , Sakari Ailus , "Martin K . Petersen" , Theodore Ts'o , Andreas Dilger , Jaegeuk Kim , Richard Weinberger , "Darrick J . Wong" , SeongJae Park , Thomas Gleixner , Andrew Morton , Michael Ellerman , Helge Deller , netdev@vger.kernel.org, linux-crypto@vger.kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mmc@vger.kernel.org, linux-parisc@vger.kernel.org Subject: [PATCH v3 0/3] convert tree to get_random_u32_{below,above,inclusive}() Date: Thu, 17 Nov 2022 21:29:03 +0100 Message-Id: <20221117202906.2312482-1-Jason@zx2c4.com> In-Reply-To: <20221114164558.1180362-1-Jason@zx2c4.com> References: <20221114164558.1180362-1-Jason@zx2c4.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hey everyone, [Changes v2->v3: rename get_random_u32_between() to get_random_u32_inclusive(), and implement with closed interval.] This series is the second tranche of tree-wide conversions to get random integer handling a bit tamer. It's another Coccinelle-based patchset. First we s/prandom_u32_max/get_random_u32_below/, since the former is just a deprecated alias for the latter. Then later, we can remove prandom_u32_max all together. I'm quite happy about finally being able to do that. It means that prandom.h is now only for deterministic and repeatable randomness, not non-deterministic/cryptographic randomness. That line is no longer blurred. In order to clean up a bunch of inefficient patterns, we use two simple helper functions built on top of get_random_u32_below: get_random_u32_above and get_random_u32_inclusive. The next two patches convert some gnarly open-coded number juggling to use these helpers. I've used Coccinelle for these three treewide patches, so hopefully review is rather uneventful. I didn't accept all of the changes that Coccinelle proposed, though, as these tend to be somewhat context-specific. I erred on the side of just going with the most obvious cases, at least this time through. And then we can address more complicated cases through actual maintainer trees. Since get_random_u32_below() and others sits in my random.git tree, these patches too will flow through that same tree. Regards, Jason Cc: Kees Cook Cc: Greg Kroah-Hartman Cc: Jakub Kicinski Cc: Russell King Cc: Catalin Marinas Cc: Thomas Bogendoerfer Cc: Heiko Carstens Cc: Herbert Xu Cc: Christoph Böhmwalder Cc: Jani Nikula Cc: Jason Gunthorpe Cc: Sakari Ailus Cc: Martin K. Petersen Cc: Theodore Ts'o Cc: Andreas Dilger Cc: Jaegeuk Kim Cc: Richard Weinberger Cc: Darrick J. Wong Cc: SeongJae Park Cc: Thomas Gleixner Cc: Andrew Morton Cc: Michael Ellerman Cc: Helge Deller Cc: netdev@vger.kernel.org Cc: linux-crypto@vger.kernel.org Cc: linux-block@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: loongarch@lists.linux.dev Cc: linux-mips@vger.kernel.org Cc: linuxppc-dev@lists.ozlabs.org Cc: linux-mmc@vger.kernel.org Cc: linux-parisc@vger.kernel.org Jason A. Donenfeld (3): treewide: use get_random_u32_below() instead of deprecated function treewide: use get_random_u32_{above,below}() instead of manual loop treewide: use get_random_u32_inclusive() when possible arch/arm/kernel/process.c | 2 +- arch/arm64/kernel/process.c | 2 +- arch/loongarch/kernel/process.c | 2 +- arch/loongarch/kernel/vdso.c | 2 +- arch/mips/kernel/process.c | 2 +- arch/mips/kernel/vdso.c | 2 +- arch/parisc/kernel/vdso.c | 2 +- arch/powerpc/crypto/crc-vpmsum_test.c | 4 +- arch/powerpc/kernel/process.c | 2 +- arch/s390/kernel/process.c | 2 +- arch/s390/kernel/vdso.c | 2 +- arch/sparc/vdso/vma.c | 2 +- arch/um/kernel/process.c | 2 +- arch/x86/entry/vdso/vma.c | 2 +- arch/x86/kernel/module.c | 2 +- arch/x86/kernel/process.c | 2 +- arch/x86/mm/pat/cpa-test.c | 4 +- crypto/rsa-pkcs1pad.c | 2 +- crypto/testmgr.c | 86 +++++++++---------- drivers/block/drbd/drbd_receiver.c | 4 +- drivers/bus/mhi/host/internal.h | 2 +- drivers/dma-buf/st-dma-fence-chain.c | 6 +- .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 2 +- .../drm/i915/gt/intel_execlists_submission.c | 2 +- drivers/gpu/drm/i915/intel_memory_region.c | 4 +- drivers/infiniband/core/cma.c | 2 +- drivers/infiniband/hw/cxgb4/id_table.c | 4 +- drivers/infiniband/hw/hns/hns_roce_ah.c | 5 +- drivers/infiniband/ulp/rtrs/rtrs-clt.c | 2 +- drivers/md/bcache/request.c | 2 +- drivers/media/common/v4l2-tpg/v4l2-tpg-core.c | 8 +- .../media/test-drivers/vidtv/vidtv_demod.c | 8 +- .../test-drivers/vivid/vivid-kthread-cap.c | 2 +- .../test-drivers/vivid/vivid-kthread-out.c | 2 +- .../media/test-drivers/vivid/vivid-radio-rx.c | 4 +- .../media/test-drivers/vivid/vivid-sdr-cap.c | 2 +- .../test-drivers/vivid/vivid-touch-cap.c | 2 +- drivers/mmc/core/core.c | 4 +- drivers/mmc/host/dw_mmc.c | 2 +- drivers/mtd/nand/raw/nandsim.c | 4 +- drivers/mtd/tests/mtd_nandecctest.c | 10 +-- drivers/mtd/tests/stresstest.c | 8 +- drivers/mtd/ubi/debug.c | 2 +- drivers/mtd/ubi/debug.h | 6 +- drivers/net/ethernet/broadcom/cnic.c | 2 +- .../chelsio/inline_crypto/chtls/chtls_io.c | 4 +- drivers/net/phy/at803x.c | 2 +- drivers/net/team/team_mode_random.c | 2 +- drivers/net/wireguard/selftest/allowedips.c | 20 ++--- drivers/net/wireguard/timers.c | 4 +- .../broadcom/brcm80211/brcmfmac/p2p.c | 2 +- .../net/wireless/intel/iwlwifi/mvm/mac-ctxt.c | 2 +- drivers/pci/p2pdma.c | 2 +- drivers/s390/scsi/zfcp_fc.c | 2 +- drivers/scsi/fcoe/fcoe_ctlr.c | 4 +- drivers/scsi/qedi/qedi_main.c | 2 +- drivers/scsi/scsi_debug.c | 6 +- fs/ceph/inode.c | 2 +- fs/ceph/mdsmap.c | 2 +- fs/ext2/ialloc.c | 2 +- fs/ext4/ialloc.c | 2 +- fs/ext4/mmp.c | 8 +- fs/ext4/super.c | 5 +- fs/f2fs/gc.c | 2 +- fs/f2fs/segment.c | 8 +- fs/ubifs/debug.c | 8 +- fs/ubifs/lpt_commit.c | 14 +-- fs/ubifs/tnc_commit.c | 2 +- fs/xfs/libxfs/xfs_alloc.c | 2 +- fs/xfs/libxfs/xfs_ialloc.c | 2 +- fs/xfs/xfs_error.c | 2 +- include/linux/damon.h | 2 +- include/linux/nodemask.h | 2 +- kernel/bpf/core.c | 4 +- kernel/kcsan/selftest.c | 4 +- kernel/locking/test-ww_mutex.c | 4 +- kernel/time/clocksource.c | 2 +- lib/fault-inject.c | 2 +- lib/find_bit_benchmark.c | 4 +- lib/kobject.c | 2 +- lib/reed_solomon/test_rslib.c | 6 +- lib/sbitmap.c | 4 +- lib/test-string_helpers.c | 2 +- lib/test_fprobe.c | 5 +- lib/test_hexdump.c | 10 +-- lib/test_kprobes.c | 5 +- lib/test_list_sort.c | 2 +- lib/test_printf.c | 2 +- lib/test_rhashtable.c | 6 +- lib/test_vmalloc.c | 8 +- mm/kasan/kasan_test.c | 6 +- mm/kfence/core.c | 4 +- mm/kfence/kfence_test.c | 4 +- mm/slub.c | 2 +- mm/swapfile.c | 5 +- net/802/garp.c | 2 +- net/802/mrp.c | 2 +- net/batman-adv/bat_iv_ogm.c | 4 +- net/batman-adv/bat_v_elp.c | 2 +- net/batman-adv/bat_v_ogm.c | 4 +- net/batman-adv/network-coding.c | 2 +- net/bluetooth/mgmt.c | 5 +- net/can/j1939/socket.c | 2 +- net/can/j1939/transport.c | 2 +- net/ceph/mon_client.c | 2 +- net/ceph/osd_client.c | 2 +- net/core/neighbour.c | 4 +- net/core/pktgen.c | 37 ++++---- net/core/stream.c | 2 +- net/ipv4/icmp.c | 2 +- net/ipv4/igmp.c | 6 +- net/ipv4/inet_connection_sock.c | 2 +- net/ipv4/inet_hashtables.c | 2 +- net/ipv4/route.c | 4 +- net/ipv4/tcp_bbr.c | 2 +- net/ipv4/tcp_input.c | 3 +- net/ipv6/addrconf.c | 8 +- net/ipv6/mcast.c | 10 +-- net/ipv6/output_core.c | 8 +- net/ipv6/route.c | 2 +- net/netfilter/ipvs/ip_vs_twos.c | 4 +- net/netfilter/nf_conntrack_core.c | 4 +- net/netfilter/nf_nat_helper.c | 2 +- net/netlink/af_netlink.c | 2 +- net/packet/af_packet.c | 4 +- net/sched/act_gact.c | 2 +- net/sched/act_sample.c | 2 +- net/sched/sch_choke.c | 2 +- net/sched/sch_netem.c | 4 +- net/sctp/socket.c | 2 +- net/sctp/transport.c | 2 +- net/sunrpc/cache.c | 2 +- net/sunrpc/xprtsock.c | 2 +- net/tipc/socket.c | 2 +- net/vmw_vsock/af_vsock.c | 3 +- net/xfrm/xfrm_state.c | 2 +- 136 files changed, 286 insertions(+), 313 deletions(-)