[PATCH v1 0/5] convert tree to get_random_u32_{below,above,between}()
Jason A. Donenfeld
Jason at zx2c4.com
Sat Oct 22 12:43:58 AEDT 2022
Hey everyone,
Here's the second and final tranche of tree-wide conversions to get
random integer handling a bit tamer. It's predominantly 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 in the next commit 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.
Then, in order to clean up a bunch of inefficient patterns, we introduce
two trivial static inline helper functions built on top of
get_random_u32_below: get_random_u32_above and get_random_u32_between.
These are pretty straight forward to use and understand. Then the final
two patches convert some gnarly open-coded number juggling to use these
helpers.
I've used Coccinelle for all the 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() sits in my random.git tree, these patches
too will flow through that same tree.
Regards,
Jason
Cc: Kees Cook <keescook at chromium.org>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: Jakub Kicinski <kuba at kernel.org>
Cc: Russell King <linux at armlinux.org.uk>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Thomas Bogendoerfer <tsbogend at alpha.franken.de>
Cc: Heiko Carstens <hca at linux.ibm.com>
Cc: Herbert Xu <herbert at gondor.apana.org.au>
Cc: Christoph Böhmwalder <christoph.boehmwalder at linbit.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: Jason Gunthorpe <jgg at nvidia.com>
Cc: Sakari Ailus <sakari.ailus at linux.intel.com>
Cc: Martin K. Petersen <martin.petersen at oracle.com>
Cc: Theodore Ts'o <tytso at mit.edu>
Cc: Andreas Dilger <adilger.kernel at dilger.ca>
Cc: Jaegeuk Kim <jaegeuk at kernel.org>
Cc: Richard Weinberger <richard at nod.at>
Cc: Darrick J. Wong <djwong at kernel.org>
Cc: SeongJae Park <sj at kernel.org>
Cc: Thomas Gleixner <tglx at linutronix.de>
Cc: Andrew Morton <akpm at linux-foundation.org>
Cc: Michael Ellerman <mpe at ellerman.id.au>
Cc: Helge Deller <deller at gmx.de>
Cc: netdev at vger.kernel.org
Cc: linux-crypto at vger.kernel.org
Cc: linux-block at vger.kernel.org
Cc: linux-fsdevel at vger.kernel.org
Cc: linux-media at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: loongarch at lists.linux.dev
Cc: linux-mips at vger.kernel.org
Cc: linuxppc-dev at lists.ozlabs.org
Cc: linux-mmc at vger.kernel.org
Cc: linux-parisc at vger.kernel.org
Jason A. Donenfeld (5):
treewide: use get_random_u32_below() instead of deprecated function
prandom: remove prandom_u32_max()
random: add helpers for random numbers with given floor or range
treewide: use get_random_u32_{above,below}() instead of manual loop
treewide: use get_random_u32_between() 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 +-
include/linux/prandom.h | 6 --
include/linux/random.h | 24 ++++++
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 | 4 +-
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 +-
138 files changed, 309 insertions(+), 318 deletions(-)
--
2.38.1
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