Revision f2ebf8ffe7af10bff02d34addbebd9199de65ed2 authored by Riccardo Mancini on 15 July 2021, 16:07:21 UTC, committed by Arnaldo Carvalho de Melo on 15 July 2021, 20:34:39 UTC
ASan reports several memory leaks running: # perf test "88: Check open filename arg using perf trace + vfs_getname" The second of these leaks is caused by the arg_fmt field of syscall not being deallocated. This patch adds a new function syscall__exit which is called on all syscalls.table entries in trace__exit, which will free the arg_fmt field. Signed-off-by: Riccardo Mancini <rickyman7@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/d68f25c043d30464ac9fa79c3399e18f429bca82.1626343282.git.rickyman7@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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nhpoly1305.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Common values and helper functions for the NHPoly1305 hash function.
*/
#ifndef _NHPOLY1305_H
#define _NHPOLY1305_H
#include <crypto/hash.h>
#include <crypto/internal/poly1305.h>
/* NH parameterization: */
/* Endianness: little */
/* Word size: 32 bits (works well on NEON, SSE2, AVX2) */
/* Stride: 2 words (optimal on ARM32 NEON; works okay on other CPUs too) */
#define NH_PAIR_STRIDE 2
#define NH_MESSAGE_UNIT (NH_PAIR_STRIDE * 2 * sizeof(u32))
/* Num passes (Toeplitz iteration count): 4, to give ε = 2^{-128} */
#define NH_NUM_PASSES 4
#define NH_HASH_BYTES (NH_NUM_PASSES * sizeof(u64))
/* Max message size: 1024 bytes (32x compression factor) */
#define NH_NUM_STRIDES 64
#define NH_MESSAGE_WORDS (NH_PAIR_STRIDE * 2 * NH_NUM_STRIDES)
#define NH_MESSAGE_BYTES (NH_MESSAGE_WORDS * sizeof(u32))
#define NH_KEY_WORDS (NH_MESSAGE_WORDS + \
NH_PAIR_STRIDE * 2 * (NH_NUM_PASSES - 1))
#define NH_KEY_BYTES (NH_KEY_WORDS * sizeof(u32))
#define NHPOLY1305_KEY_SIZE (POLY1305_BLOCK_SIZE + NH_KEY_BYTES)
struct nhpoly1305_key {
struct poly1305_core_key poly_key;
u32 nh_key[NH_KEY_WORDS];
};
struct nhpoly1305_state {
/* Running total of polynomial evaluation */
struct poly1305_state poly_state;
/* Partial block buffer */
u8 buffer[NH_MESSAGE_UNIT];
unsigned int buflen;
/*
* Number of bytes remaining until the current NH message reaches
* NH_MESSAGE_BYTES. When nonzero, 'nh_hash' holds the partial NH hash.
*/
unsigned int nh_remaining;
__le64 nh_hash[NH_NUM_PASSES];
};
typedef void (*nh_t)(const u32 *key, const u8 *message, size_t message_len,
__le64 hash[NH_NUM_PASSES]);
int crypto_nhpoly1305_setkey(struct crypto_shash *tfm,
const u8 *key, unsigned int keylen);
int crypto_nhpoly1305_init(struct shash_desc *desc);
int crypto_nhpoly1305_update(struct shash_desc *desc,
const u8 *src, unsigned int srclen);
int crypto_nhpoly1305_update_helper(struct shash_desc *desc,
const u8 *src, unsigned int srclen,
nh_t nh_fn);
int crypto_nhpoly1305_final(struct shash_desc *desc, u8 *dst);
int crypto_nhpoly1305_final_helper(struct shash_desc *desc, u8 *dst,
nh_t nh_fn);
#endif /* _NHPOLY1305_H */
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