[PATCH v2 0/3] convert tree to get_random_u32_{below,above,between}()
Jason A. Donenfeld
Jason at zx2c4.com
Tue Nov 15 03:45:55 AEDT 2022
Hey everyone,
[Changes v1->v2: Jakub asked me to send a v2 around now in the current
cycle to minimize potential conflicts with the net tree. So this is
rebased and stripped down to just the treewide parts. As well, the
removal function is deferred until the end of 6.2 in a separate pull so
that we don't have merge issues.]
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_between. 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 <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 (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_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 +-
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(-)
--
2.38.1
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