| Message ID | 20221006165346.73159-5-Jason@zx2c4.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | treewide cleanup of random integer usage | expand |
Le 06/10/2022 à 18:53, Jason A. Donenfeld a écrit : > The prandom_bytes() function has been a deprecated inline wrapper around > get_random_bytes() for several releases now, and compiles down to the > exact same code. Replace the deprecated wrapper with a direct call to > the real function. > > Reviewed-by: Kees Cook <keescook@chromium.org> > Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> (Powerpc part) > --- > arch/powerpc/crypto/crc-vpmsum_test.c | 2 +- > > diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c > index c1c1ef9457fb..273c527868db 100644 > --- a/arch/powerpc/crypto/crc-vpmsum_test.c > +++ b/arch/powerpc/crypto/crc-vpmsum_test.c > @@ -82,7 +82,7 @@ static int __init crc_test_init(void) > > if (len <= offset) > continue; > - prandom_bytes(data, len); > + get_random_bytes(data, len); > len -= offset; > > crypto_shash_update(crct10dif_shash, data+offset, len);
On 10/6/22 23:53, Jason A. Donenfeld wrote: > The prandom_bytes() function has been a deprecated inline wrapper around > get_random_bytes() for several releases now, and compiles down to the > exact same code. Replace the deprecated wrapper with a direct call to > the real function. > > Reviewed-by: Kees Cook <keescook@chromium.org> > Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> > --- > arch/powerpc/crypto/crc-vpmsum_test.c | 2 +- > block/blk-crypto-fallback.c | 2 +- > crypto/async_tx/raid6test.c | 2 +- > drivers/dma/dmatest.c | 2 +- > drivers/mtd/nand/raw/nandsim.c | 2 +- > drivers/mtd/tests/mtd_nandecctest.c | 2 +- > drivers/mtd/tests/speedtest.c | 2 +- > drivers/mtd/tests/stresstest.c | 2 +- > drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- > drivers/net/ethernet/rocker/rocker_main.c | 2 +- > drivers/net/wireguard/selftest/allowedips.c | 12 ++++++------ > fs/ubifs/debug.c | 2 +- > kernel/kcsan/selftest.c | 2 +- > lib/random32.c | 2 +- > lib/test_objagg.c | 2 +- > lib/uuid.c | 2 +- > net/ipv4/route.c | 2 +- > net/mac80211/rc80211_minstrel_ht.c | 2 +- > net/sched/sch_pie.c | 2 +- > 19 files changed, 24 insertions(+), 24 deletions(-) > > diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c > index c1c1ef9457fb..273c527868db 100644 > --- a/arch/powerpc/crypto/crc-vpmsum_test.c > +++ b/arch/powerpc/crypto/crc-vpmsum_test.c > @@ -82,7 +82,7 @@ static int __init crc_test_init(void) > > if (len <= offset) > continue; > - prandom_bytes(data, len); > + get_random_bytes(data, len); > len -= offset; > > crypto_shash_update(crct10dif_shash, data+offset, len); > diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c > index 621abd1b0e4d..ad9844c5b40c 100644 > --- a/block/blk-crypto-fallback.c > +++ b/block/blk-crypto-fallback.c > @@ -539,7 +539,7 @@ static int blk_crypto_fallback_init(void) > if (blk_crypto_fallback_inited) > return 0; > > - prandom_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE); > + get_random_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE); > > err = bioset_init(&crypto_bio_split, 64, 0, 0); > if (err) > diff --git a/crypto/async_tx/raid6test.c b/crypto/async_tx/raid6test.c > index c9d218e53bcb..f74505f2baf0 100644 > --- a/crypto/async_tx/raid6test.c > +++ b/crypto/async_tx/raid6test.c > @@ -37,7 +37,7 @@ static void makedata(int disks) > int i; > > for (i = 0; i < disks; i++) { > - prandom_bytes(page_address(data[i]), PAGE_SIZE); > + get_random_bytes(page_address(data[i]), PAGE_SIZE); > dataptrs[i] = data[i]; > dataoffs[i] = 0; > } > diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c > index 9fe2ae794316..ffe621695e47 100644 > --- a/drivers/dma/dmatest.c > +++ b/drivers/dma/dmatest.c > @@ -312,7 +312,7 @@ static unsigned long dmatest_random(void) > { > unsigned long buf; > > - prandom_bytes(&buf, sizeof(buf)); > + get_random_bytes(&buf, sizeof(buf)); > return buf; > } > > diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c > index 4bdaf4aa7007..c941a5a41ea6 100644 > --- a/drivers/mtd/nand/raw/nandsim.c > +++ b/drivers/mtd/nand/raw/nandsim.c > @@ -1393,7 +1393,7 @@ static int ns_do_read_error(struct nandsim *ns, int num) > unsigned int page_no = ns->regs.row; > > if (ns_read_error(page_no)) { > - prandom_bytes(ns->buf.byte, num); > + get_random_bytes(ns->buf.byte, num); > NS_WARN("simulating read error in page %u\n", page_no); > return 1; > } > diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c > index 1c7201b0f372..440988562cfd 100644 > --- a/drivers/mtd/tests/mtd_nandecctest.c > +++ b/drivers/mtd/tests/mtd_nandecctest.c > @@ -266,7 +266,7 @@ static int nand_ecc_test_run(const size_t size) > goto error; > } > > - prandom_bytes(correct_data, size); > + get_random_bytes(correct_data, size); > ecc_sw_hamming_calculate(correct_data, size, correct_ecc, sm_order); > for (i = 0; i < ARRAY_SIZE(nand_ecc_test); i++) { > nand_ecc_test[i].prepare(error_data, error_ecc, > diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c > index c9ec7086bfa1..075bce32caa5 100644 > --- a/drivers/mtd/tests/speedtest.c > +++ b/drivers/mtd/tests/speedtest.c > @@ -223,7 +223,7 @@ static int __init mtd_speedtest_init(void) > if (!iobuf) > goto out; > > - prandom_bytes(iobuf, mtd->erasesize); > + get_random_bytes(iobuf, mtd->erasesize); > > bbt = kzalloc(ebcnt, GFP_KERNEL); > if (!bbt) > diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c > index d2faaca7f19d..75b6ddc5dc4d 100644 > --- a/drivers/mtd/tests/stresstest.c > +++ b/drivers/mtd/tests/stresstest.c > @@ -183,7 +183,7 @@ static int __init mtd_stresstest_init(void) > goto out; > for (i = 0; i < ebcnt; i++) > offsets[i] = mtd->erasesize; > - prandom_bytes(writebuf, bufsize); > + get_random_bytes(writebuf, bufsize); > > bbt = kzalloc(ebcnt, GFP_KERNEL); > if (!bbt) > diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c > index 96da0ba3d507..354953df46a1 100644 > --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c > +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c > @@ -3874,7 +3874,7 @@ static void bnxt_init_vnics(struct bnxt *bp) > > if (bp->vnic_info[i].rss_hash_key) { > if (i == 0) > - prandom_bytes(vnic->rss_hash_key, > + get_random_bytes(vnic->rss_hash_key, > HW_HASH_KEY_SIZE); > else > memcpy(vnic->rss_hash_key, > diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c > index 8c3bbafabb07..cd4488efe0a4 100644 > --- a/drivers/net/ethernet/rocker/rocker_main.c > +++ b/drivers/net/ethernet/rocker/rocker_main.c > @@ -224,7 +224,7 @@ static int rocker_dma_test_offset(const struct rocker *rocker, > if (err) > goto unmap; > > - prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); > + get_random_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); > for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) > expect[i] = ~buf[i]; > err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, > diff --git a/drivers/net/wireguard/selftest/allowedips.c b/drivers/net/wireguard/selftest/allowedips.c > index dd897c0740a2..19eac00b2381 100644 > --- a/drivers/net/wireguard/selftest/allowedips.c > +++ b/drivers/net/wireguard/selftest/allowedips.c > @@ -284,7 +284,7 @@ static __init bool randomized_test(void) > mutex_lock(&mutex); > > for (i = 0; i < NUM_RAND_ROUTES; ++i) { > - prandom_bytes(ip, 4); > + get_random_bytes(ip, 4); > cidr = prandom_u32_max(32) + 1; > peer = peers[prandom_u32_max(NUM_PEERS)]; > if (wg_allowedips_insert_v4(&t, (struct in_addr *)ip, cidr, > @@ -299,7 +299,7 @@ static __init bool randomized_test(void) > } > for (j = 0; j < NUM_MUTATED_ROUTES; ++j) { > memcpy(mutated, ip, 4); > - prandom_bytes(mutate_mask, 4); > + get_random_bytes(mutate_mask, 4); > mutate_amount = prandom_u32_max(32); > for (k = 0; k < mutate_amount / 8; ++k) > mutate_mask[k] = 0xff; > @@ -328,7 +328,7 @@ static __init bool randomized_test(void) > } > > for (i = 0; i < NUM_RAND_ROUTES; ++i) { > - prandom_bytes(ip, 16); > + get_random_bytes(ip, 16); > cidr = prandom_u32_max(128) + 1; > peer = peers[prandom_u32_max(NUM_PEERS)]; > if (wg_allowedips_insert_v6(&t, (struct in6_addr *)ip, cidr, > @@ -343,7 +343,7 @@ static __init bool randomized_test(void) > } > for (j = 0; j < NUM_MUTATED_ROUTES; ++j) { > memcpy(mutated, ip, 16); > - prandom_bytes(mutate_mask, 16); > + get_random_bytes(mutate_mask, 16); > mutate_amount = prandom_u32_max(128); > for (k = 0; k < mutate_amount / 8; ++k) > mutate_mask[k] = 0xff; > @@ -381,13 +381,13 @@ static __init bool randomized_test(void) > > for (j = 0;; ++j) { > for (i = 0; i < NUM_QUERIES; ++i) { > - prandom_bytes(ip, 4); > + get_random_bytes(ip, 4); > if (lookup(t.root4, 32, ip) != horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip)) { > horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip); > pr_err("allowedips random v4 self-test: FAIL\n"); > goto free; > } > - prandom_bytes(ip, 16); > + get_random_bytes(ip, 16); > if (lookup(t.root6, 128, ip) != horrible_allowedips_lookup_v6(&h, (struct in6_addr *)ip)) { > pr_err("allowedips random v6 self-test: FAIL\n"); > goto free; > diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c > index f4d3b568aa64..3f128b9fdfbb 100644 > --- a/fs/ubifs/debug.c > +++ b/fs/ubifs/debug.c > @@ -2581,7 +2581,7 @@ static int corrupt_data(const struct ubifs_info *c, const void *buf, > if (ffs) > memset(p + from, 0xFF, to - from); > else > - prandom_bytes(p + from, to - from); > + get_random_bytes(p + from, to - from); > > return to; > } > diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c > index 58b94deae5c0..00cdf8fa5693 100644 > --- a/kernel/kcsan/selftest.c > +++ b/kernel/kcsan/selftest.c > @@ -46,7 +46,7 @@ static bool __init test_encode_decode(void) > unsigned long addr; > size_t verif_size; > > - prandom_bytes(&addr, sizeof(addr)); > + get_random_bytes(&addr, sizeof(addr)); > if (addr < PAGE_SIZE) > addr = PAGE_SIZE; > > diff --git a/lib/random32.c b/lib/random32.c > index d4f19e1a69d4..32060b852668 100644 > --- a/lib/random32.c > +++ b/lib/random32.c > @@ -69,7 +69,7 @@ EXPORT_SYMBOL(prandom_u32_state); > * @bytes: the requested number of bytes > * > * This is used for pseudo-randomness with no outside seeding. > - * For more random results, use prandom_bytes(). > + * For more random results, use get_random_bytes(). > */ > void prandom_bytes_state(struct rnd_state *state, void *buf, size_t bytes) > { > diff --git a/lib/test_objagg.c b/lib/test_objagg.c > index da137939a410..c0c957c50635 100644 > --- a/lib/test_objagg.c > +++ b/lib/test_objagg.c > @@ -157,7 +157,7 @@ static int test_nodelta_obj_get(struct world *world, struct objagg *objagg, > int err; > > if (should_create_root) > - prandom_bytes(world->next_root_buf, > + get_random_bytes(world->next_root_buf, > sizeof(world->next_root_buf)); > > objagg_obj = world_obj_get(world, objagg, key_id); > diff --git a/lib/uuid.c b/lib/uuid.c > index 562d53977cab..e309b4c5be3d 100644 > --- a/lib/uuid.c > +++ b/lib/uuid.c > @@ -52,7 +52,7 @@ EXPORT_SYMBOL(generate_random_guid); > > static void __uuid_gen_common(__u8 b[16]) > { > - prandom_bytes(b, 16); > + get_random_bytes(b, 16); > /* reversion 0b10 */ > b[8] = (b[8] & 0x3F) | 0x80; > } > diff --git a/net/ipv4/route.c b/net/ipv4/route.c > index 1a37a07c7163..cd1fa9f70f1a 100644 > --- a/net/ipv4/route.c > +++ b/net/ipv4/route.c > @@ -3719,7 +3719,7 @@ int __init ip_rt_init(void) > > ip_idents = idents_hash; > > - prandom_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents)); > + get_random_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents)); > > ip_tstamps = idents_hash + (ip_idents_mask + 1) * sizeof(*ip_idents); > > diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c > index 5f27e6746762..39fb4e2d141a 100644 > --- a/net/mac80211/rc80211_minstrel_ht.c > +++ b/net/mac80211/rc80211_minstrel_ht.c > @@ -2033,7 +2033,7 @@ static void __init init_sample_table(void) > > memset(sample_table, 0xff, sizeof(sample_table)); > for (col = 0; col < SAMPLE_COLUMNS; col++) { > - prandom_bytes(rnd, sizeof(rnd)); > + get_random_bytes(rnd, sizeof(rnd)); > for (i = 0; i < MCS_GROUP_RATES; i++) { > new_idx = (i + rnd[i]) % MCS_GROUP_RATES; > while (sample_table[col][new_idx] != 0xff) > diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c > index 5a457ff61acd..66b2b23e8cd1 100644 > --- a/net/sched/sch_pie.c > +++ b/net/sched/sch_pie.c > @@ -72,7 +72,7 @@ bool pie_drop_early(struct Qdisc *sch, struct pie_params *params, > if (vars->accu_prob >= (MAX_PROB / 2) * 17) > return true; > > - prandom_bytes(&rnd, 8); > + get_random_bytes(&rnd, 8); > if ((rnd >> BITS_PER_BYTE) < local_prob) { > vars->accu_prob = 0; > return true; Are there cases where calling get_random_bytes() is not possible?
On 10/6/22, Bagas Sanjaya <bagasdotme@gmail.com> wrote: > On 10/6/22 23:53, Jason A. Donenfeld wrote: >> The prandom_bytes() function has been a deprecated inline wrapper around >> get_random_bytes() for several releases now, and compiles down to the >> exact same code. Replace the deprecated wrapper with a direct call to >> the real function. >> >> Reviewed-by: Kees Cook <keescook@chromium.org> >> Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> >> --- >> arch/powerpc/crypto/crc-vpmsum_test.c | 2 +- >> block/blk-crypto-fallback.c | 2 +- >> crypto/async_tx/raid6test.c | 2 +- >> drivers/dma/dmatest.c | 2 +- >> drivers/mtd/nand/raw/nandsim.c | 2 +- >> drivers/mtd/tests/mtd_nandecctest.c | 2 +- >> drivers/mtd/tests/speedtest.c | 2 +- >> drivers/mtd/tests/stresstest.c | 2 +- >> drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +- >> drivers/net/ethernet/rocker/rocker_main.c | 2 +- >> drivers/net/wireguard/selftest/allowedips.c | 12 ++++++------ >> fs/ubifs/debug.c | 2 +- >> kernel/kcsan/selftest.c | 2 +- >> lib/random32.c | 2 +- >> lib/test_objagg.c | 2 +- >> lib/uuid.c | 2 +- >> net/ipv4/route.c | 2 +- >> net/mac80211/rc80211_minstrel_ht.c | 2 +- >> net/sched/sch_pie.c | 2 +- >> 19 files changed, 24 insertions(+), 24 deletions(-) >> >> diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c >> b/arch/powerpc/crypto/crc-vpmsum_test.c >> index c1c1ef9457fb..273c527868db 100644 >> --- a/arch/powerpc/crypto/crc-vpmsum_test.c >> +++ b/arch/powerpc/crypto/crc-vpmsum_test.c >> @@ -82,7 +82,7 @@ static int __init crc_test_init(void) >> >> if (len <= offset) >> continue; >> - prandom_bytes(data, len); >> + get_random_bytes(data, len); >> len -= offset; >> >> crypto_shash_update(crct10dif_shash, data+offset, len); >> diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c >> index 621abd1b0e4d..ad9844c5b40c 100644 >> --- a/block/blk-crypto-fallback.c >> +++ b/block/blk-crypto-fallback.c >> @@ -539,7 +539,7 @@ static int blk_crypto_fallback_init(void) >> if (blk_crypto_fallback_inited) >> return 0; >> >> - prandom_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE); >> + get_random_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE); >> >> err = bioset_init(&crypto_bio_split, 64, 0, 0); >> if (err) >> diff --git a/crypto/async_tx/raid6test.c b/crypto/async_tx/raid6test.c >> index c9d218e53bcb..f74505f2baf0 100644 >> --- a/crypto/async_tx/raid6test.c >> +++ b/crypto/async_tx/raid6test.c >> @@ -37,7 +37,7 @@ static void makedata(int disks) >> int i; >> >> for (i = 0; i < disks; i++) { >> - prandom_bytes(page_address(data[i]), PAGE_SIZE); >> + get_random_bytes(page_address(data[i]), PAGE_SIZE); >> dataptrs[i] = data[i]; >> dataoffs[i] = 0; >> } >> diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c >> index 9fe2ae794316..ffe621695e47 100644 >> --- a/drivers/dma/dmatest.c >> +++ b/drivers/dma/dmatest.c >> @@ -312,7 +312,7 @@ static unsigned long dmatest_random(void) >> { >> unsigned long buf; >> >> - prandom_bytes(&buf, sizeof(buf)); >> + get_random_bytes(&buf, sizeof(buf)); >> return buf; >> } >> >> diff --git a/drivers/mtd/nand/raw/nandsim.c >> b/drivers/mtd/nand/raw/nandsim.c >> index 4bdaf4aa7007..c941a5a41ea6 100644 >> --- a/drivers/mtd/nand/raw/nandsim.c >> +++ b/drivers/mtd/nand/raw/nandsim.c >> @@ -1393,7 +1393,7 @@ static int ns_do_read_error(struct nandsim *ns, int >> num) >> unsigned int page_no = ns->regs.row; >> >> if (ns_read_error(page_no)) { >> - prandom_bytes(ns->buf.byte, num); >> + get_random_bytes(ns->buf.byte, num); >> NS_WARN("simulating read error in page %u\n", page_no); >> return 1; >> } >> diff --git a/drivers/mtd/tests/mtd_nandecctest.c >> b/drivers/mtd/tests/mtd_nandecctest.c >> index 1c7201b0f372..440988562cfd 100644 >> --- a/drivers/mtd/tests/mtd_nandecctest.c >> +++ b/drivers/mtd/tests/mtd_nandecctest.c >> @@ -266,7 +266,7 @@ static int nand_ecc_test_run(const size_t size) >> goto error; >> } >> >> - prandom_bytes(correct_data, size); >> + get_random_bytes(correct_data, size); >> ecc_sw_hamming_calculate(correct_data, size, correct_ecc, sm_order); >> for (i = 0; i < ARRAY_SIZE(nand_ecc_test); i++) { >> nand_ecc_test[i].prepare(error_data, error_ecc, >> diff --git a/drivers/mtd/tests/speedtest.c >> b/drivers/mtd/tests/speedtest.c >> index c9ec7086bfa1..075bce32caa5 100644 >> --- a/drivers/mtd/tests/speedtest.c >> +++ b/drivers/mtd/tests/speedtest.c >> @@ -223,7 +223,7 @@ static int __init mtd_speedtest_init(void) >> if (!iobuf) >> goto out; >> >> - prandom_bytes(iobuf, mtd->erasesize); >> + get_random_bytes(iobuf, mtd->erasesize); >> >> bbt = kzalloc(ebcnt, GFP_KERNEL); >> if (!bbt) >> diff --git a/drivers/mtd/tests/stresstest.c >> b/drivers/mtd/tests/stresstest.c >> index d2faaca7f19d..75b6ddc5dc4d 100644 >> --- a/drivers/mtd/tests/stresstest.c >> +++ b/drivers/mtd/tests/stresstest.c >> @@ -183,7 +183,7 @@ static int __init mtd_stresstest_init(void) >> goto out; >> for (i = 0; i < ebcnt; i++) >> offsets[i] = mtd->erasesize; >> - prandom_bytes(writebuf, bufsize); >> + get_random_bytes(writebuf, bufsize); >> >> bbt = kzalloc(ebcnt, GFP_KERNEL); >> if (!bbt) >> diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c >> b/drivers/net/ethernet/broadcom/bnxt/bnxt.c >> index 96da0ba3d507..354953df46a1 100644 >> --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c >> +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c >> @@ -3874,7 +3874,7 @@ static void bnxt_init_vnics(struct bnxt *bp) >> >> if (bp->vnic_info[i].rss_hash_key) { >> if (i == 0) >> - prandom_bytes(vnic->rss_hash_key, >> + get_random_bytes(vnic->rss_hash_key, >> HW_HASH_KEY_SIZE); >> else >> memcpy(vnic->rss_hash_key, >> diff --git a/drivers/net/ethernet/rocker/rocker_main.c >> b/drivers/net/ethernet/rocker/rocker_main.c >> index 8c3bbafabb07..cd4488efe0a4 100644 >> --- a/drivers/net/ethernet/rocker/rocker_main.c >> +++ b/drivers/net/ethernet/rocker/rocker_main.c >> @@ -224,7 +224,7 @@ static int rocker_dma_test_offset(const struct rocker >> *rocker, >> if (err) >> goto unmap; >> >> - prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); >> + get_random_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); >> for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) >> expect[i] = ~buf[i]; >> err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, >> diff --git a/drivers/net/wireguard/selftest/allowedips.c >> b/drivers/net/wireguard/selftest/allowedips.c >> index dd897c0740a2..19eac00b2381 100644 >> --- a/drivers/net/wireguard/selftest/allowedips.c >> +++ b/drivers/net/wireguard/selftest/allowedips.c >> @@ -284,7 +284,7 @@ static __init bool randomized_test(void) >> mutex_lock(&mutex); >> >> for (i = 0; i < NUM_RAND_ROUTES; ++i) { >> - prandom_bytes(ip, 4); >> + get_random_bytes(ip, 4); >> cidr = prandom_u32_max(32) + 1; >> peer = peers[prandom_u32_max(NUM_PEERS)]; >> if (wg_allowedips_insert_v4(&t, (struct in_addr *)ip, cidr, >> @@ -299,7 +299,7 @@ static __init bool randomized_test(void) >> } >> for (j = 0; j < NUM_MUTATED_ROUTES; ++j) { >> memcpy(mutated, ip, 4); >> - prandom_bytes(mutate_mask, 4); >> + get_random_bytes(mutate_mask, 4); >> mutate_amount = prandom_u32_max(32); >> for (k = 0; k < mutate_amount / 8; ++k) >> mutate_mask[k] = 0xff; >> @@ -328,7 +328,7 @@ static __init bool randomized_test(void) >> } >> >> for (i = 0; i < NUM_RAND_ROUTES; ++i) { >> - prandom_bytes(ip, 16); >> + get_random_bytes(ip, 16); >> cidr = prandom_u32_max(128) + 1; >> peer = peers[prandom_u32_max(NUM_PEERS)]; >> if (wg_allowedips_insert_v6(&t, (struct in6_addr *)ip, cidr, >> @@ -343,7 +343,7 @@ static __init bool randomized_test(void) >> } >> for (j = 0; j < NUM_MUTATED_ROUTES; ++j) { >> memcpy(mutated, ip, 16); >> - prandom_bytes(mutate_mask, 16); >> + get_random_bytes(mutate_mask, 16); >> mutate_amount = prandom_u32_max(128); >> for (k = 0; k < mutate_amount / 8; ++k) >> mutate_mask[k] = 0xff; >> @@ -381,13 +381,13 @@ static __init bool randomized_test(void) >> >> for (j = 0;; ++j) { >> for (i = 0; i < NUM_QUERIES; ++i) { >> - prandom_bytes(ip, 4); >> + get_random_bytes(ip, 4); >> if (lookup(t.root4, 32, ip) != horrible_allowedips_lookup_v4(&h, >> (struct in_addr *)ip)) { >> horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip); >> pr_err("allowedips random v4 self-test: FAIL\n"); >> goto free; >> } >> - prandom_bytes(ip, 16); >> + get_random_bytes(ip, 16); >> if (lookup(t.root6, 128, ip) != horrible_allowedips_lookup_v6(&h, >> (struct in6_addr *)ip)) { >> pr_err("allowedips random v6 self-test: FAIL\n"); >> goto free; >> diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c >> index f4d3b568aa64..3f128b9fdfbb 100644 >> --- a/fs/ubifs/debug.c >> +++ b/fs/ubifs/debug.c >> @@ -2581,7 +2581,7 @@ static int corrupt_data(const struct ubifs_info *c, >> const void *buf, >> if (ffs) >> memset(p + from, 0xFF, to - from); >> else >> - prandom_bytes(p + from, to - from); >> + get_random_bytes(p + from, to - from); >> >> return to; >> } >> diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c >> index 58b94deae5c0..00cdf8fa5693 100644 >> --- a/kernel/kcsan/selftest.c >> +++ b/kernel/kcsan/selftest.c >> @@ -46,7 +46,7 @@ static bool __init test_encode_decode(void) >> unsigned long addr; >> size_t verif_size; >> >> - prandom_bytes(&addr, sizeof(addr)); >> + get_random_bytes(&addr, sizeof(addr)); >> if (addr < PAGE_SIZE) >> addr = PAGE_SIZE; >> >> diff --git a/lib/random32.c b/lib/random32.c >> index d4f19e1a69d4..32060b852668 100644 >> --- a/lib/random32.c >> +++ b/lib/random32.c >> @@ -69,7 +69,7 @@ EXPORT_SYMBOL(prandom_u32_state); >> * @bytes: the requested number of bytes >> * >> * This is used for pseudo-randomness with no outside seeding. >> - * For more random results, use prandom_bytes(). >> + * For more random results, use get_random_bytes(). >> */ >> void prandom_bytes_state(struct rnd_state *state, void *buf, size_t >> bytes) >> { >> diff --git a/lib/test_objagg.c b/lib/test_objagg.c >> index da137939a410..c0c957c50635 100644 >> --- a/lib/test_objagg.c >> +++ b/lib/test_objagg.c >> @@ -157,7 +157,7 @@ static int test_nodelta_obj_get(struct world *world, >> struct objagg *objagg, >> int err; >> >> if (should_create_root) >> - prandom_bytes(world->next_root_buf, >> + get_random_bytes(world->next_root_buf, >> sizeof(world->next_root_buf)); >> >> objagg_obj = world_obj_get(world, objagg, key_id); >> diff --git a/lib/uuid.c b/lib/uuid.c >> index 562d53977cab..e309b4c5be3d 100644 >> --- a/lib/uuid.c >> +++ b/lib/uuid.c >> @@ -52,7 +52,7 @@ EXPORT_SYMBOL(generate_random_guid); >> >> static void __uuid_gen_common(__u8 b[16]) >> { >> - prandom_bytes(b, 16); >> + get_random_bytes(b, 16); >> /* reversion 0b10 */ >> b[8] = (b[8] & 0x3F) | 0x80; >> } >> diff --git a/net/ipv4/route.c b/net/ipv4/route.c >> index 1a37a07c7163..cd1fa9f70f1a 100644 >> --- a/net/ipv4/route.c >> +++ b/net/ipv4/route.c >> @@ -3719,7 +3719,7 @@ int __init ip_rt_init(void) >> >> ip_idents = idents_hash; >> >> - prandom_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents)); >> + get_random_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents)); >> >> ip_tstamps = idents_hash + (ip_idents_mask + 1) * sizeof(*ip_idents); >> >> diff --git a/net/mac80211/rc80211_minstrel_ht.c >> b/net/mac80211/rc80211_minstrel_ht.c >> index 5f27e6746762..39fb4e2d141a 100644 >> --- a/net/mac80211/rc80211_minstrel_ht.c >> +++ b/net/mac80211/rc80211_minstrel_ht.c >> @@ -2033,7 +2033,7 @@ static void __init init_sample_table(void) >> >> memset(sample_table, 0xff, sizeof(sample_table)); >> for (col = 0; col < SAMPLE_COLUMNS; col++) { >> - prandom_bytes(rnd, sizeof(rnd)); >> + get_random_bytes(rnd, sizeof(rnd)); >> for (i = 0; i < MCS_GROUP_RATES; i++) { >> new_idx = (i + rnd[i]) % MCS_GROUP_RATES; >> while (sample_table[col][new_idx] != 0xff) >> diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c >> index 5a457ff61acd..66b2b23e8cd1 100644 >> --- a/net/sched/sch_pie.c >> +++ b/net/sched/sch_pie.c >> @@ -72,7 +72,7 @@ bool pie_drop_early(struct Qdisc *sch, struct pie_params >> *params, >> if (vars->accu_prob >= (MAX_PROB / 2) * 17) >> return true; >> >> - prandom_bytes(&rnd, 8); >> + get_random_bytes(&rnd, 8); >> if ((rnd >> BITS_PER_BYTE) < local_prob) { >> vars->accu_prob = 0; >> return true; > > Are there cases where calling get_random_bytes() is not possible? Yes, but that has absolutely zero bearing whatsoever on this patch 4/5, considering the code this generates is identical. If you have serious questions about contexts the rng can operate in, please start another thread, where you can flesh out that inquiry a but more. Jason
diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c index c1c1ef9457fb..273c527868db 100644 --- a/arch/powerpc/crypto/crc-vpmsum_test.c +++ b/arch/powerpc/crypto/crc-vpmsum_test.c @@ -82,7 +82,7 @@ static int __init crc_test_init(void) if (len <= offset) continue; - prandom_bytes(data, len); + get_random_bytes(data, len); len -= offset; crypto_shash_update(crct10dif_shash, data+offset, len); diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c index 621abd1b0e4d..ad9844c5b40c 100644 --- a/block/blk-crypto-fallback.c +++ b/block/blk-crypto-fallback.c @@ -539,7 +539,7 @@ static int blk_crypto_fallback_init(void) if (blk_crypto_fallback_inited) return 0; - prandom_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE); + get_random_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE); err = bioset_init(&crypto_bio_split, 64, 0, 0); if (err) diff --git a/crypto/async_tx/raid6test.c b/crypto/async_tx/raid6test.c index c9d218e53bcb..f74505f2baf0 100644 --- a/crypto/async_tx/raid6test.c +++ b/crypto/async_tx/raid6test.c @@ -37,7 +37,7 @@ static void makedata(int disks) int i; for (i = 0; i < disks; i++) { - prandom_bytes(page_address(data[i]), PAGE_SIZE); + get_random_bytes(page_address(data[i]), PAGE_SIZE); dataptrs[i] = data[i]; dataoffs[i] = 0; } diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c index 9fe2ae794316..ffe621695e47 100644 --- a/drivers/dma/dmatest.c +++ b/drivers/dma/dmatest.c @@ -312,7 +312,7 @@ static unsigned long dmatest_random(void) { unsigned long buf; - prandom_bytes(&buf, sizeof(buf)); + get_random_bytes(&buf, sizeof(buf)); return buf; } diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c index 4bdaf4aa7007..c941a5a41ea6 100644 --- a/drivers/mtd/nand/raw/nandsim.c +++ b/drivers/mtd/nand/raw/nandsim.c @@ -1393,7 +1393,7 @@ static int ns_do_read_error(struct nandsim *ns, int num) unsigned int page_no = ns->regs.row; if (ns_read_error(page_no)) { - prandom_bytes(ns->buf.byte, num); + get_random_bytes(ns->buf.byte, num); NS_WARN("simulating read error in page %u\n", page_no); return 1; } diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c index 1c7201b0f372..440988562cfd 100644 --- a/drivers/mtd/tests/mtd_nandecctest.c +++ b/drivers/mtd/tests/mtd_nandecctest.c @@ -266,7 +266,7 @@ static int nand_ecc_test_run(const size_t size) goto error; } - prandom_bytes(correct_data, size); + get_random_bytes(correct_data, size); ecc_sw_hamming_calculate(correct_data, size, correct_ecc, sm_order); for (i = 0; i < ARRAY_SIZE(nand_ecc_test); i++) { nand_ecc_test[i].prepare(error_data, error_ecc, diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c index c9ec7086bfa1..075bce32caa5 100644 --- a/drivers/mtd/tests/speedtest.c +++ b/drivers/mtd/tests/speedtest.c @@ -223,7 +223,7 @@ static int __init mtd_speedtest_init(void) if (!iobuf) goto out; - prandom_bytes(iobuf, mtd->erasesize); + get_random_bytes(iobuf, mtd->erasesize); bbt = kzalloc(ebcnt, GFP_KERNEL); if (!bbt) diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c index d2faaca7f19d..75b6ddc5dc4d 100644 --- a/drivers/mtd/tests/stresstest.c +++ b/drivers/mtd/tests/stresstest.c @@ -183,7 +183,7 @@ static int __init mtd_stresstest_init(void) goto out; for (i = 0; i < ebcnt; i++) offsets[i] = mtd->erasesize; - prandom_bytes(writebuf, bufsize); + get_random_bytes(writebuf, bufsize); bbt = kzalloc(ebcnt, GFP_KERNEL); if (!bbt) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 96da0ba3d507..354953df46a1 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -3874,7 +3874,7 @@ static void bnxt_init_vnics(struct bnxt *bp) if (bp->vnic_info[i].rss_hash_key) { if (i == 0) - prandom_bytes(vnic->rss_hash_key, + get_random_bytes(vnic->rss_hash_key, HW_HASH_KEY_SIZE); else memcpy(vnic->rss_hash_key, diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c index 8c3bbafabb07..cd4488efe0a4 100644 --- a/drivers/net/ethernet/rocker/rocker_main.c +++ b/drivers/net/ethernet/rocker/rocker_main.c @@ -224,7 +224,7 @@ static int rocker_dma_test_offset(const struct rocker *rocker, if (err) goto unmap; - prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); + get_random_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE); for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++) expect[i] = ~buf[i]; err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT, diff --git a/drivers/net/wireguard/selftest/allowedips.c b/drivers/net/wireguard/selftest/allowedips.c index dd897c0740a2..19eac00b2381 100644 --- a/drivers/net/wireguard/selftest/allowedips.c +++ b/drivers/net/wireguard/selftest/allowedips.c @@ -284,7 +284,7 @@ static __init bool randomized_test(void) mutex_lock(&mutex); for (i = 0; i < NUM_RAND_ROUTES; ++i) { - prandom_bytes(ip, 4); + get_random_bytes(ip, 4); cidr = prandom_u32_max(32) + 1; peer = peers[prandom_u32_max(NUM_PEERS)]; if (wg_allowedips_insert_v4(&t, (struct in_addr *)ip, cidr, @@ -299,7 +299,7 @@ static __init bool randomized_test(void) } for (j = 0; j < NUM_MUTATED_ROUTES; ++j) { memcpy(mutated, ip, 4); - prandom_bytes(mutate_mask, 4); + get_random_bytes(mutate_mask, 4); mutate_amount = prandom_u32_max(32); for (k = 0; k < mutate_amount / 8; ++k) mutate_mask[k] = 0xff; @@ -328,7 +328,7 @@ static __init bool randomized_test(void) } for (i = 0; i < NUM_RAND_ROUTES; ++i) { - prandom_bytes(ip, 16); + get_random_bytes(ip, 16); cidr = prandom_u32_max(128) + 1; peer = peers[prandom_u32_max(NUM_PEERS)]; if (wg_allowedips_insert_v6(&t, (struct in6_addr *)ip, cidr, @@ -343,7 +343,7 @@ static __init bool randomized_test(void) } for (j = 0; j < NUM_MUTATED_ROUTES; ++j) { memcpy(mutated, ip, 16); - prandom_bytes(mutate_mask, 16); + get_random_bytes(mutate_mask, 16); mutate_amount = prandom_u32_max(128); for (k = 0; k < mutate_amount / 8; ++k) mutate_mask[k] = 0xff; @@ -381,13 +381,13 @@ static __init bool randomized_test(void) for (j = 0;; ++j) { for (i = 0; i < NUM_QUERIES; ++i) { - prandom_bytes(ip, 4); + get_random_bytes(ip, 4); if (lookup(t.root4, 32, ip) != horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip)) { horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip); pr_err("allowedips random v4 self-test: FAIL\n"); goto free; } - prandom_bytes(ip, 16); + get_random_bytes(ip, 16); if (lookup(t.root6, 128, ip) != horrible_allowedips_lookup_v6(&h, (struct in6_addr *)ip)) { pr_err("allowedips random v6 self-test: FAIL\n"); goto free; diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index f4d3b568aa64..3f128b9fdfbb 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -2581,7 +2581,7 @@ static int corrupt_data(const struct ubifs_info *c, const void *buf, if (ffs) memset(p + from, 0xFF, to - from); else - prandom_bytes(p + from, to - from); + get_random_bytes(p + from, to - from); return to; } diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c index 58b94deae5c0..00cdf8fa5693 100644 --- a/kernel/kcsan/selftest.c +++ b/kernel/kcsan/selftest.c @@ -46,7 +46,7 @@ static bool __init test_encode_decode(void) unsigned long addr; size_t verif_size; - prandom_bytes(&addr, sizeof(addr)); + get_random_bytes(&addr, sizeof(addr)); if (addr < PAGE_SIZE) addr = PAGE_SIZE; diff --git a/lib/random32.c b/lib/random32.c index d4f19e1a69d4..32060b852668 100644 --- a/lib/random32.c +++ b/lib/random32.c @@ -69,7 +69,7 @@ EXPORT_SYMBOL(prandom_u32_state); * @bytes: the requested number of bytes * * This is used for pseudo-randomness with no outside seeding. - * For more random results, use prandom_bytes(). + * For more random results, use get_random_bytes(). */ void prandom_bytes_state(struct rnd_state *state, void *buf, size_t bytes) { diff --git a/lib/test_objagg.c b/lib/test_objagg.c index da137939a410..c0c957c50635 100644 --- a/lib/test_objagg.c +++ b/lib/test_objagg.c @@ -157,7 +157,7 @@ static int test_nodelta_obj_get(struct world *world, struct objagg *objagg, int err; if (should_create_root) - prandom_bytes(world->next_root_buf, + get_random_bytes(world->next_root_buf, sizeof(world->next_root_buf)); objagg_obj = world_obj_get(world, objagg, key_id); diff --git a/lib/uuid.c b/lib/uuid.c index 562d53977cab..e309b4c5be3d 100644 --- a/lib/uuid.c +++ b/lib/uuid.c @@ -52,7 +52,7 @@ EXPORT_SYMBOL(generate_random_guid); static void __uuid_gen_common(__u8 b[16]) { - prandom_bytes(b, 16); + get_random_bytes(b, 16); /* reversion 0b10 */ b[8] = (b[8] & 0x3F) | 0x80; } diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 1a37a07c7163..cd1fa9f70f1a 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -3719,7 +3719,7 @@ int __init ip_rt_init(void) ip_idents = idents_hash; - prandom_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents)); + get_random_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents)); ip_tstamps = idents_hash + (ip_idents_mask + 1) * sizeof(*ip_idents); diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c index 5f27e6746762..39fb4e2d141a 100644 --- a/net/mac80211/rc80211_minstrel_ht.c +++ b/net/mac80211/rc80211_minstrel_ht.c @@ -2033,7 +2033,7 @@ static void __init init_sample_table(void) memset(sample_table, 0xff, sizeof(sample_table)); for (col = 0; col < SAMPLE_COLUMNS; col++) { - prandom_bytes(rnd, sizeof(rnd)); + get_random_bytes(rnd, sizeof(rnd)); for (i = 0; i < MCS_GROUP_RATES; i++) { new_idx = (i + rnd[i]) % MCS_GROUP_RATES; while (sample_table[col][new_idx] != 0xff) diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c index 5a457ff61acd..66b2b23e8cd1 100644 --- a/net/sched/sch_pie.c +++ b/net/sched/sch_pie.c @@ -72,7 +72,7 @@ bool pie_drop_early(struct Qdisc *sch, struct pie_params *params, if (vars->accu_prob >= (MAX_PROB / 2) * 17) return true; - prandom_bytes(&rnd, 8); + get_random_bytes(&rnd, 8); if ((rnd >> BITS_PER_BYTE) < local_prob) { vars->accu_prob = 0; return true;