Revision 231c807a60715312e2a93a001cc9be9b888bc350 authored by Linus Torvalds on 24 March 2019, 18:42:10 UTC, committed by Linus Torvalds on 24 March 2019, 18:42:10 UTC
Pull scheduler updates from Thomas Gleixner:
"Third more careful attempt for this set of fixes:
- Prevent a 32bit math overflow in the cpufreq code
- Fix a buffer overflow when scanning the cgroup2 cpu.max property
- A set of fixes for the NOHZ scheduler logic to prevent waking up
CPUs even if the capacity of the busy CPUs is sufficient along with
other tweaks optimizing the behaviour for asymmetric systems
(big/little)"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/fair: Skip LLC NOHZ logic for asymmetric systems
sched/fair: Tune down misfit NOHZ kicks
sched/fair: Comment some nohz_balancer_kick() kick conditions
sched/core: Fix buffer overflow in cgroup2 property cpu.max
sched/cpufreq: Fix 32-bit math overflow
rmd160.c
/*
* Cryptographic API.
*
* RIPEMD-160 - RACE Integrity Primitives Evaluation Message Digest.
*
* Based on the reference implementation by Antoon Bosselaers, ESAT-COSIC
*
* Copyright (c) 2008 Adrian-Ken Rueegsegger <ken@codelabs.ch>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
*/
#include <crypto/internal/hash.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/types.h>
#include <asm/byteorder.h>
#include "ripemd.h"
struct rmd160_ctx {
u64 byte_count;
u32 state[5];
__le32 buffer[16];
};
#define K1 RMD_K1
#define K2 RMD_K2
#define K3 RMD_K3
#define K4 RMD_K4
#define K5 RMD_K5
#define KK1 RMD_K6
#define KK2 RMD_K7
#define KK3 RMD_K8
#define KK4 RMD_K9
#define KK5 RMD_K1
#define F1(x, y, z) (x ^ y ^ z) /* XOR */
#define F2(x, y, z) (z ^ (x & (y ^ z))) /* x ? y : z */
#define F3(x, y, z) ((x | ~y) ^ z)
#define F4(x, y, z) (y ^ (z & (x ^ y))) /* z ? x : y */
#define F5(x, y, z) (x ^ (y | ~z))
#define ROUND(a, b, c, d, e, f, k, x, s) { \
(a) += f((b), (c), (d)) + le32_to_cpup(&(x)) + (k); \
(a) = rol32((a), (s)) + (e); \
(c) = rol32((c), 10); \
}
static void rmd160_transform(u32 *state, const __le32 *in)
{
u32 aa, bb, cc, dd, ee, aaa, bbb, ccc, ddd, eee;
/* Initialize left lane */
aa = state[0];
bb = state[1];
cc = state[2];
dd = state[3];
ee = state[4];
/* Initialize right lane */
aaa = state[0];
bbb = state[1];
ccc = state[2];
ddd = state[3];
eee = state[4];
/* round 1: left lane */
ROUND(aa, bb, cc, dd, ee, F1, K1, in[0], 11);
ROUND(ee, aa, bb, cc, dd, F1, K1, in[1], 14);
ROUND(dd, ee, aa, bb, cc, F1, K1, in[2], 15);
ROUND(cc, dd, ee, aa, bb, F1, K1, in[3], 12);
ROUND(bb, cc, dd, ee, aa, F1, K1, in[4], 5);
ROUND(aa, bb, cc, dd, ee, F1, K1, in[5], 8);
ROUND(ee, aa, bb, cc, dd, F1, K1, in[6], 7);
ROUND(dd, ee, aa, bb, cc, F1, K1, in[7], 9);
ROUND(cc, dd, ee, aa, bb, F1, K1, in[8], 11);
ROUND(bb, cc, dd, ee, aa, F1, K1, in[9], 13);
ROUND(aa, bb, cc, dd, ee, F1, K1, in[10], 14);
ROUND(ee, aa, bb, cc, dd, F1, K1, in[11], 15);
ROUND(dd, ee, aa, bb, cc, F1, K1, in[12], 6);
ROUND(cc, dd, ee, aa, bb, F1, K1, in[13], 7);
ROUND(bb, cc, dd, ee, aa, F1, K1, in[14], 9);
ROUND(aa, bb, cc, dd, ee, F1, K1, in[15], 8);
/* round 2: left lane" */
ROUND(ee, aa, bb, cc, dd, F2, K2, in[7], 7);
ROUND(dd, ee, aa, bb, cc, F2, K2, in[4], 6);
ROUND(cc, dd, ee, aa, bb, F2, K2, in[13], 8);
ROUND(bb, cc, dd, ee, aa, F2, K2, in[1], 13);
ROUND(aa, bb, cc, dd, ee, F2, K2, in[10], 11);
ROUND(ee, aa, bb, cc, dd, F2, K2, in[6], 9);
ROUND(dd, ee, aa, bb, cc, F2, K2, in[15], 7);
ROUND(cc, dd, ee, aa, bb, F2, K2, in[3], 15);
ROUND(bb, cc, dd, ee, aa, F2, K2, in[12], 7);
ROUND(aa, bb, cc, dd, ee, F2, K2, in[0], 12);
ROUND(ee, aa, bb, cc, dd, F2, K2, in[9], 15);
ROUND(dd, ee, aa, bb, cc, F2, K2, in[5], 9);
ROUND(cc, dd, ee, aa, bb, F2, K2, in[2], 11);
ROUND(bb, cc, dd, ee, aa, F2, K2, in[14], 7);
ROUND(aa, bb, cc, dd, ee, F2, K2, in[11], 13);
ROUND(ee, aa, bb, cc, dd, F2, K2, in[8], 12);
/* round 3: left lane" */
ROUND(dd, ee, aa, bb, cc, F3, K3, in[3], 11);
ROUND(cc, dd, ee, aa, bb, F3, K3, in[10], 13);
ROUND(bb, cc, dd, ee, aa, F3, K3, in[14], 6);
ROUND(aa, bb, cc, dd, ee, F3, K3, in[4], 7);
ROUND(ee, aa, bb, cc, dd, F3, K3, in[9], 14);
ROUND(dd, ee, aa, bb, cc, F3, K3, in[15], 9);
ROUND(cc, dd, ee, aa, bb, F3, K3, in[8], 13);
ROUND(bb, cc, dd, ee, aa, F3, K3, in[1], 15);
ROUND(aa, bb, cc, dd, ee, F3, K3, in[2], 14);
ROUND(ee, aa, bb, cc, dd, F3, K3, in[7], 8);
ROUND(dd, ee, aa, bb, cc, F3, K3, in[0], 13);
ROUND(cc, dd, ee, aa, bb, F3, K3, in[6], 6);
ROUND(bb, cc, dd, ee, aa, F3, K3, in[13], 5);
ROUND(aa, bb, cc, dd, ee, F3, K3, in[11], 12);
ROUND(ee, aa, bb, cc, dd, F3, K3, in[5], 7);
ROUND(dd, ee, aa, bb, cc, F3, K3, in[12], 5);
/* round 4: left lane" */
ROUND(cc, dd, ee, aa, bb, F4, K4, in[1], 11);
ROUND(bb, cc, dd, ee, aa, F4, K4, in[9], 12);
ROUND(aa, bb, cc, dd, ee, F4, K4, in[11], 14);
ROUND(ee, aa, bb, cc, dd, F4, K4, in[10], 15);
ROUND(dd, ee, aa, bb, cc, F4, K4, in[0], 14);
ROUND(cc, dd, ee, aa, bb, F4, K4, in[8], 15);
ROUND(bb, cc, dd, ee, aa, F4, K4, in[12], 9);
ROUND(aa, bb, cc, dd, ee, F4, K4, in[4], 8);
ROUND(ee, aa, bb, cc, dd, F4, K4, in[13], 9);
ROUND(dd, ee, aa, bb, cc, F4, K4, in[3], 14);
ROUND(cc, dd, ee, aa, bb, F4, K4, in[7], 5);
ROUND(bb, cc, dd, ee, aa, F4, K4, in[15], 6);
ROUND(aa, bb, cc, dd, ee, F4, K4, in[14], 8);
ROUND(ee, aa, bb, cc, dd, F4, K4, in[5], 6);
ROUND(dd, ee, aa, bb, cc, F4, K4, in[6], 5);
ROUND(cc, dd, ee, aa, bb, F4, K4, in[2], 12);
/* round 5: left lane" */
ROUND(bb, cc, dd, ee, aa, F5, K5, in[4], 9);
ROUND(aa, bb, cc, dd, ee, F5, K5, in[0], 15);
ROUND(ee, aa, bb, cc, dd, F5, K5, in[5], 5);
ROUND(dd, ee, aa, bb, cc, F5, K5, in[9], 11);
ROUND(cc, dd, ee, aa, bb, F5, K5, in[7], 6);
ROUND(bb, cc, dd, ee, aa, F5, K5, in[12], 8);
ROUND(aa, bb, cc, dd, ee, F5, K5, in[2], 13);
ROUND(ee, aa, bb, cc, dd, F5, K5, in[10], 12);
ROUND(dd, ee, aa, bb, cc, F5, K5, in[14], 5);
ROUND(cc, dd, ee, aa, bb, F5, K5, in[1], 12);
ROUND(bb, cc, dd, ee, aa, F5, K5, in[3], 13);
ROUND(aa, bb, cc, dd, ee, F5, K5, in[8], 14);
ROUND(ee, aa, bb, cc, dd, F5, K5, in[11], 11);
ROUND(dd, ee, aa, bb, cc, F5, K5, in[6], 8);
ROUND(cc, dd, ee, aa, bb, F5, K5, in[15], 5);
ROUND(bb, cc, dd, ee, aa, F5, K5, in[13], 6);
/* round 1: right lane */
ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[5], 8);
ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[14], 9);
ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[7], 9);
ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[0], 11);
ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[9], 13);
ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[2], 15);
ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[11], 15);
ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[4], 5);
ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[13], 7);
ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[6], 7);
ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[15], 8);
ROUND(eee, aaa, bbb, ccc, ddd, F5, KK1, in[8], 11);
ROUND(ddd, eee, aaa, bbb, ccc, F5, KK1, in[1], 14);
ROUND(ccc, ddd, eee, aaa, bbb, F5, KK1, in[10], 14);
ROUND(bbb, ccc, ddd, eee, aaa, F5, KK1, in[3], 12);
ROUND(aaa, bbb, ccc, ddd, eee, F5, KK1, in[12], 6);
/* round 2: right lane */
ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[6], 9);
ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[11], 13);
ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[3], 15);
ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[7], 7);
ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[0], 12);
ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[13], 8);
ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[5], 9);
ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[10], 11);
ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[14], 7);
ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[15], 7);
ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[8], 12);
ROUND(ddd, eee, aaa, bbb, ccc, F4, KK2, in[12], 7);
ROUND(ccc, ddd, eee, aaa, bbb, F4, KK2, in[4], 6);
ROUND(bbb, ccc, ddd, eee, aaa, F4, KK2, in[9], 15);
ROUND(aaa, bbb, ccc, ddd, eee, F4, KK2, in[1], 13);
ROUND(eee, aaa, bbb, ccc, ddd, F4, KK2, in[2], 11);
/* round 3: right lane */
ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[15], 9);
ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[5], 7);
ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[1], 15);
ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[3], 11);
ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[7], 8);
ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[14], 6);
ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[6], 6);
ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[9], 14);
ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[11], 12);
ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[8], 13);
ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[12], 5);
ROUND(ccc, ddd, eee, aaa, bbb, F3, KK3, in[2], 14);
ROUND(bbb, ccc, ddd, eee, aaa, F3, KK3, in[10], 13);
ROUND(aaa, bbb, ccc, ddd, eee, F3, KK3, in[0], 13);
ROUND(eee, aaa, bbb, ccc, ddd, F3, KK3, in[4], 7);
ROUND(ddd, eee, aaa, bbb, ccc, F3, KK3, in[13], 5);
/* round 4: right lane */
ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[8], 15);
ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[6], 5);
ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[4], 8);
ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[1], 11);
ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[3], 14);
ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[11], 14);
ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[15], 6);
ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[0], 14);
ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[5], 6);
ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[12], 9);
ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[2], 12);
ROUND(bbb, ccc, ddd, eee, aaa, F2, KK4, in[13], 9);
ROUND(aaa, bbb, ccc, ddd, eee, F2, KK4, in[9], 12);
ROUND(eee, aaa, bbb, ccc, ddd, F2, KK4, in[7], 5);
ROUND(ddd, eee, aaa, bbb, ccc, F2, KK4, in[10], 15);
ROUND(ccc, ddd, eee, aaa, bbb, F2, KK4, in[14], 8);
/* round 5: right lane */
ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[12], 8);
ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[15], 5);
ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[10], 12);
ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[4], 9);
ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[1], 12);
ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[5], 5);
ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[8], 14);
ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[7], 6);
ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[6], 8);
ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[2], 13);
ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[13], 6);
ROUND(aaa, bbb, ccc, ddd, eee, F1, KK5, in[14], 5);
ROUND(eee, aaa, bbb, ccc, ddd, F1, KK5, in[0], 15);
ROUND(ddd, eee, aaa, bbb, ccc, F1, KK5, in[3], 13);
ROUND(ccc, ddd, eee, aaa, bbb, F1, KK5, in[9], 11);
ROUND(bbb, ccc, ddd, eee, aaa, F1, KK5, in[11], 11);
/* combine results */
ddd += cc + state[1]; /* final result for state[0] */
state[1] = state[2] + dd + eee;
state[2] = state[3] + ee + aaa;
state[3] = state[4] + aa + bbb;
state[4] = state[0] + bb + ccc;
state[0] = ddd;
}
static int rmd160_init(struct shash_desc *desc)
{
struct rmd160_ctx *rctx = shash_desc_ctx(desc);
rctx->byte_count = 0;
rctx->state[0] = RMD_H0;
rctx->state[1] = RMD_H1;
rctx->state[2] = RMD_H2;
rctx->state[3] = RMD_H3;
rctx->state[4] = RMD_H4;
memset(rctx->buffer, 0, sizeof(rctx->buffer));
return 0;
}
static int rmd160_update(struct shash_desc *desc, const u8 *data,
unsigned int len)
{
struct rmd160_ctx *rctx = shash_desc_ctx(desc);
const u32 avail = sizeof(rctx->buffer) - (rctx->byte_count & 0x3f);
rctx->byte_count += len;
/* Enough space in buffer? If so copy and we're done */
if (avail > len) {
memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
data, len);
goto out;
}
memcpy((char *)rctx->buffer + (sizeof(rctx->buffer) - avail),
data, avail);
rmd160_transform(rctx->state, rctx->buffer);
data += avail;
len -= avail;
while (len >= sizeof(rctx->buffer)) {
memcpy(rctx->buffer, data, sizeof(rctx->buffer));
rmd160_transform(rctx->state, rctx->buffer);
data += sizeof(rctx->buffer);
len -= sizeof(rctx->buffer);
}
memcpy(rctx->buffer, data, len);
out:
return 0;
}
/* Add padding and return the message digest. */
static int rmd160_final(struct shash_desc *desc, u8 *out)
{
struct rmd160_ctx *rctx = shash_desc_ctx(desc);
u32 i, index, padlen;
__le64 bits;
__le32 *dst = (__le32 *)out;
static const u8 padding[64] = { 0x80, };
bits = cpu_to_le64(rctx->byte_count << 3);
/* Pad out to 56 mod 64 */
index = rctx->byte_count & 0x3f;
padlen = (index < 56) ? (56 - index) : ((64+56) - index);
rmd160_update(desc, padding, padlen);
/* Append length */
rmd160_update(desc, (const u8 *)&bits, sizeof(bits));
/* Store state in digest */
for (i = 0; i < 5; i++)
dst[i] = cpu_to_le32p(&rctx->state[i]);
/* Wipe context */
memset(rctx, 0, sizeof(*rctx));
return 0;
}
static struct shash_alg alg = {
.digestsize = RMD160_DIGEST_SIZE,
.init = rmd160_init,
.update = rmd160_update,
.final = rmd160_final,
.descsize = sizeof(struct rmd160_ctx),
.base = {
.cra_name = "rmd160",
.cra_blocksize = RMD160_BLOCK_SIZE,
.cra_module = THIS_MODULE,
}
};
static int __init rmd160_mod_init(void)
{
return crypto_register_shash(&alg);
}
static void __exit rmd160_mod_fini(void)
{
crypto_unregister_shash(&alg);
}
module_init(rmd160_mod_init);
module_exit(rmd160_mod_fini);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Adrian-Ken Rueegsegger <ken@codelabs.ch>");
MODULE_DESCRIPTION("RIPEMD-160 Message Digest");
MODULE_ALIAS_CRYPTO("rmd160");
Computing file changes ...
