From 4617721c502b2ddaa4e324e86da4997edf738fa5 Mon Sep 17 00:00:00 2001 From: Steven Rostedt Date: Wed, 2 Sep 2026 09:55:01 -0400 Subject: ftrace: Synchronize the initialization of ftrace_ops There's some internal state that ftrace_ops needs to have set, but since it can be declared outside of the ftrace.c code, it calls ftrace_ops_init() on the ops in every global function. The issue is that if two tasks call it on the same ops at the same time it is possible to have the initialization of one corrupt the initialization of the other call. Create a ops_mutex to use to synchronize every initialization of the ftrace_ops. The mutex is taken within checking the ftrace_ops flag that states it was initializied but the flag is checked again after the mutex has been taken. Checking first outside the mutex allows it to shortcut having to take the mutex. But then the check needs to be done again after the mute is taken in case of races. Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260902095501.6b59af20@gandalf.local.home Fixes: f04f24fb7e48d ("ftrace, kprobes: Fix a deadlock on ftrace_regex_lock") Reported-by: sashiko-bot@kernel.org Close: https://lore.kernel.org/all/20260829025528.49A831F000E9@smtp.kernel.org/ Signed-off-by: Steven Rostedt --- crypto/tcrypt.h | 99 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 crypto/tcrypt.h (limited to 'crypto/tcrypt.h') diff --git a/crypto/tcrypt.h b/crypto/tcrypt.h new file mode 100644 index 000000000..85c3f77bc --- /dev/null +++ b/crypto/tcrypt.h @@ -0,0 +1,99 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Quick & dirty crypto benchmarking module. + * + * This will only exist until we have a better benchmarking mechanism + * (e.g. a char device). + * + * Copyright (c) 2002 James Morris + * Copyright (c) 2002 Jean-Francois Dive + * Copyright (c) 2007 Nokia Siemens Networks + */ +#ifndef _CRYPTO_TCRYPT_H +#define _CRYPTO_TCRYPT_H + +struct cipher_speed_template { + const char *key; + unsigned int klen; +}; + +struct aead_speed_template { + const char *key; + unsigned int klen; +}; + +struct hash_speed { + unsigned int blen; /* buffer length */ + unsigned int plen; /* per-update length */ +}; + +/* + * DES test vectors. + */ +#define DES3_SPEED_VECTORS 1 + +static struct cipher_speed_template des3_speed_template[] = { + { + .key = "\x01\x23\x45\x67\x89\xab\xcd\xef" + "\x55\x55\x55\x55\x55\x55\x55\x55" + "\xfe\xdc\xba\x98\x76\x54\x32\x10", + .klen = 24, + } +}; + +/* + * Cipher speed tests + */ +static u8 speed_template_8[] = {8, 0}; +static u8 speed_template_16[] = {16, 0}; +static u8 speed_template_24[] = {24, 0}; +static u8 speed_template_8_16[] = {8, 16, 0}; +static u8 speed_template_8_32[] = {8, 32, 0}; +static u8 speed_template_16_32[] = {16, 32, 0}; +static u8 speed_template_16_24_32[] = {16, 24, 32, 0}; +static u8 speed_template_20_28_36[] = {20, 28, 36, 0}; +static u8 speed_template_32_40_48[] = {32, 40, 48, 0}; +static u8 speed_template_32_48[] = {32, 48, 0}; +static u8 speed_template_32_48_64[] = {32, 48, 64, 0}; +static u8 speed_template_32_64[] = {32, 64, 0}; +static u8 speed_template_32[] = {32, 0}; + +/* + * AEAD speed tests + */ +static u8 aead_speed_template_19[] = {19, 0}; +static u8 aead_speed_template_20_28_36[] = {20, 28, 36, 0}; +static u8 aead_speed_template_36[] = {36, 0}; + +/* + * Digest speed tests + */ +static struct hash_speed generic_hash_speed_template[] = { + { .blen = 16, .plen = 16, }, + { .blen = 64, .plen = 16, }, + { .blen = 64, .plen = 64, }, + { .blen = 256, .plen = 16, }, + { .blen = 256, .plen = 64, }, + { .blen = 256, .plen = 256, }, + { .blen = 1024, .plen = 16, }, + { .blen = 1024, .plen = 256, }, + { .blen = 1024, .plen = 1024, }, + { .blen = 2048, .plen = 16, }, + { .blen = 2048, .plen = 256, }, + { .blen = 2048, .plen = 1024, }, + { .blen = 2048, .plen = 2048, }, + { .blen = 4096, .plen = 16, }, + { .blen = 4096, .plen = 256, }, + { .blen = 4096, .plen = 1024, }, + { .blen = 4096, .plen = 4096, }, + { .blen = 8192, .plen = 16, }, + { .blen = 8192, .plen = 256, }, + { .blen = 8192, .plen = 1024, }, + { .blen = 8192, .plen = 4096, }, + { .blen = 8192, .plen = 8192, }, + + /* End marker */ + { .blen = 0, .plen = 0, } +}; + +#endif /* _CRYPTO_TCRYPT_H */ -- cgit v1.3.1