ftrace: Synchronize the initialization of ftrace_opsgrafted

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 <rostedt@goodmis.org>

1 files changed, 291 insertions, 0 deletions

diff --git a/crypto/krb5/selftest_data.c b/crypto/krb5/selftest_data.c
new file mode 100644
index 000000000..24447ee8b
--- /dev/null
+++ b/crypto/krb5/selftest_data.c
@@ -0,0 +1,291 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Data for Kerberos library self-testing
+ *
+ * Copyright (C) 2025 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include "internal.h"
+
+/*
+ * Pseudo-random function tests.
+ */
+const struct krb5_prf_test krb5_prf_tests[] = {
+	/* rfc8009 Appendix A */
+	{
+		.etype	= KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+		.name	= "prf",
+		.key	= "3705D96080C17728A0E800EAB6E0D23C",
+		.octet	= "74657374",
+		.prf	= "9D188616F63852FE86915BB840B4A886FF3E6BB0F819B49B893393D393854295",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		.name	= "prf",
+		.key	= "6D404D37FAF79F9DF0D33568D320669800EB4836472EA8A026D16B7182460C52",
+		.octet	= "74657374",
+		.prf	=
+		"9801F69A368C2BF675E59521E177D9A07F67EFE1CFDE8D3C8D6F6A0256E3B17D"
+		"B3C1B62AD1B8553360D17367EB1514D2",
+	},
+	{/* END */}
+};
+
+/*
+ * Key derivation tests.
+ */
+const struct krb5_key_test krb5_key_tests[] = {
+	/* rfc8009 Appendix A */
+	{
+		.etype	= KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+		.name	= "key",
+		.key	= "3705D96080C17728A0E800EAB6E0D23C",
+		.Kc.use	= 0x00000002,
+		.Kc.key	= "B31A018A48F54776F403E9A396325DC3",
+		.Ke.use	= 0x00000002,
+		.Ke.key	= "9B197DD1E8C5609D6E67C3E37C62C72E",
+		.Ki.use	= 0x00000002,
+		.Ki.key	= "9FDA0E56AB2D85E1569A688696C26A6C",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		.name	= "key",
+		.key	= "6D404D37FAF79F9DF0D33568D320669800EB4836472EA8A026D16B7182460C52",
+		.Kc.use	= 0x00000002,
+		.Kc.key	= "EF5718BE86CC84963D8BBB5031E9F5C4BA41F28FAF69E73D",
+		.Ke.use	= 0x00000002,
+		.Ke.key	= "56AB22BEE63D82D7BC5227F6773F8EA7A5EB1C825160C38312980C442E5C7E49",
+		.Ki.use	= 0x00000002,
+		.Ki.key	= "69B16514E3CD8E56B82010D5C73012B622C4D00FFC23ED1F",
+	},
+	/* rfc6803 sec 10 */
+	{
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "key",
+		.key	= "57D0297298FFD9D35DE5A47FB4BDE24B",
+		.Kc.use	= 0x00000002,
+		.Kc.key	= "D155775A209D05F02B38D42A389E5A56",
+		.Ke.use	= 0x00000002,
+		.Ke.key	= "64DF83F85A532F17577D8C37035796AB",
+		.Ki.use	= 0x00000002,
+		.Ki.key	= "3E4FBDF30FB8259C425CB6C96F1F4635",
+	},
+	{
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "key",
+		.key	= "B9D6828B2056B7BE656D88A123B1FAC68214AC2B727ECF5F69AFE0C4DF2A6D2C",
+		.Kc.use	= 0x00000002,
+		.Kc.key	= "E467F9A9552BC7D3155A6220AF9C19220EEED4FF78B0D1E6A1544991461A9E50",
+		.Ke.use	= 0x00000002,
+		.Ke.key	= "412AEFC362A7285FC3966C6A5181E7605AE675235B6D549FBFC9AB6630A4C604",
+		.Ki.use	= 0x00000002,
+		.Ki.key	= "FA624FA0E523993FA388AEFDC67E67EBCD8C08E8A0246B1D73B0D1DD9FC582B0",
+	},
+	{/* END */}
+};
+
+/*
+ * Encryption tests.
+ */
+const struct krb5_enc_test krb5_enc_tests[] = {
+	/* rfc8009 Appendix A */
+	{
+		.etype	= KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+		.name	= "enc no plain",
+		.plain	= "",
+		.conf	= "7E5895EAF2672435BAD817F545A37148",
+		.Ke	= "9B197DD1E8C5609D6E67C3E37C62C72E",
+		.Ki	= "9FDA0E56AB2D85E1569A688696C26A6C",
+		.ct	= "EF85FB890BB8472F4DAB20394DCA781DAD877EDA39D50C870C0D5A0A8E48C718",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+		.name	= "enc plain<block",
+		.plain	= "000102030405",
+		.conf	= "7BCA285E2FD4130FB55B1A5C83BC5B24",
+		.Ke	= "9B197DD1E8C5609D6E67C3E37C62C72E",
+		.Ki	= "9FDA0E56AB2D85E1569A688696C26A6C",
+		.ct	= "84D7F30754ED987BAB0BF3506BEB09CFB55402CEF7E6877CE99E247E52D16ED4421DFDF8976C",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+		.name	= "enc plain==block",
+		.plain	= "000102030405060708090A0B0C0D0E0F",
+		.conf	= "56AB21713FF62C0A1457200F6FA9948F",
+		.Ke	= "9B197DD1E8C5609D6E67C3E37C62C72E",
+		.Ki	= "9FDA0E56AB2D85E1569A688696C26A6C",
+		.ct	= "3517D640F50DDC8AD3628722B3569D2AE07493FA8263254080EA65C1008E8FC295FB4852E7D83E1E7C48C37EEBE6B0D3",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+		.name	= "enc plain>block",
+		.plain	= "000102030405060708090A0B0C0D0E0F1011121314",
+		.conf	= "A7A4E29A4728CE10664FB64E49AD3FAC",
+		.Ke	= "9B197DD1E8C5609D6E67C3E37C62C72E",
+		.Ki	= "9FDA0E56AB2D85E1569A688696C26A6C",
+		.ct	= "720F73B18D9859CD6CCB4346115CD336C70F58EDC0C4437C5573544C31C813BCE1E6D072C186B39A413C2F92CA9B8334A287FFCBFC",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		.name	= "enc no plain",
+		.plain	= "",
+		.conf	= "F764E9FA15C276478B2C7D0C4E5F58E4",
+		.Ke	= "56AB22BEE63D82D7BC5227F6773F8EA7A5EB1C825160C38312980C442E5C7E49",
+		.Ki	= "69B16514E3CD8E56B82010D5C73012B622C4D00FFC23ED1F",
+		.ct	= "41F53FA5BFE7026D91FAF9BE959195A058707273A96A40F0A01960621AC612748B9BBFBE7EB4CE3C",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		.name	= "enc plain<block",
+		.plain	= "000102030405",
+		.conf	= "B80D3251C1F6471494256FFE712D0B9A",
+		.Ke	= "56AB22BEE63D82D7BC5227F6773F8EA7A5EB1C825160C38312980C442E5C7E49",
+		.Ki	= "69B16514E3CD8E56B82010D5C73012B622C4D00FFC23ED1F",
+		.ct	= "4ED7B37C2BCAC8F74F23C1CF07E62BC7B75FB3F637B9F559C7F664F69EAB7B6092237526EA0D1F61CB20D69D10F2",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		.name	= "enc plain==block",
+		.plain	= "000102030405060708090A0B0C0D0E0F",
+		.conf	= "53BF8A0D105265D4E276428624CE5E63",
+		.Ke	= "56AB22BEE63D82D7BC5227F6773F8EA7A5EB1C825160C38312980C442E5C7E49",
+		.Ki	= "69B16514E3CD8E56B82010D5C73012B622C4D00FFC23ED1F",
+		.ct	= "BC47FFEC7998EB91E8115CF8D19DAC4BBBE2E163E87DD37F49BECA92027764F68CF51F14D798C2273F35DF574D1F932E40C4FF255B36A266",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		.name	= "enc plain>block",
+		.plain	= "000102030405060708090A0B0C0D0E0F1011121314",
+		.conf	= "763E65367E864F02F55153C7E3B58AF1",
+		.Ke	= "56AB22BEE63D82D7BC5227F6773F8EA7A5EB1C825160C38312980C442E5C7E49",
+		.Ki	= "69B16514E3CD8E56B82010D5C73012B622C4D00FFC23ED1F",
+		.ct	= "40013E2DF58E8751957D2878BCD2D6FE101CCFD556CB1EAE79DB3C3EE86429F2B2A602AC86FEF6ECB647D6295FAE077A1FEB517508D2C16B4192E01F62",
+	},
+	/* rfc6803 sec 10 */
+	{
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "enc no plain",
+		.plain	= "",
+		.conf	= "B69822A19A6B09C0EBC8557D1F1B6C0A",
+		.K0	= "1DC46A8D763F4F93742BCBA3387576C3",
+		.usage	= 0,
+		.ct	= "C466F1871069921EDB7C6FDE244A52DB0BA10EDC197BDB8006658CA3CCCE6EB8",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "enc 1 plain",
+		.plain	= "'1",
+		.conf	= "6F2FC3C2A166FD8898967A83DE9596D9",
+		.K0	= "5027BC231D0F3A9D23333F1CA6FDBE7C",
+		.usage	= 1,
+		.ct	= "842D21FD950311C0DD464A3F4BE8D6DA88A56D559C9B47D3F9A85067AF661559B8",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "enc 9 plain",
+		.plain	= "'9 bytesss",
+		.conf	= "A5B4A71E077AEEF93C8763C18FDB1F10",
+		.K0	= "A1BB61E805F9BA6DDE8FDBDDC05CDEA0",
+		.usage	= 2,
+		.ct	= "619FF072E36286FF0A28DEB3A352EC0D0EDF5C5160D663C901758CCF9D1ED33D71DB8F23AABF8348A0",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "enc 13 plain",
+		.plain	= "'13 bytes byte",
+		.conf	= "19FEE40D810C524B5B22F01874C693DA",
+		.K0	= "2CA27A5FAF5532244506434E1CEF6676",
+		.usage	= 3,
+		.ct	= "B8ECA3167AE6315512E59F98A7C500205E5F63FF3BB389AF1C41A21D640D8615C9ED3FBEB05AB6ACB67689B5EA",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "enc 30 plain",
+		.plain	= "'30 bytes bytes bytes bytes byt",
+		.conf	= "CA7A7AB4BE192DABD603506DB19C39E2",
+		.K0	= "7824F8C16F83FF354C6BF7515B973F43",
+		.usage	= 4,
+		.ct	= "A26A3905A4FFD5816B7B1E27380D08090C8EC1F304496E1ABDCD2BDCD1DFFC660989E117A713DDBB57A4146C1587CBA4356665591D2240282F5842B105A5",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "enc no plain",
+		.plain	= "",
+		.conf	= "3CBBD2B45917941067F96599BB98926C",
+		.K0	= "B61C86CC4E5D2757545AD423399FB7031ECAB913CBB900BD7A3C6DD8BF92015B",
+		.usage	= 0,
+		.ct	= "03886D03310B47A6D8F06D7B94D1DD837ECCE315EF652AFF620859D94A259266",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "enc 1 plain",
+		.plain	= "'1",
+		.conf	= "DEF487FCEBE6DE6346D4DA4521BBA2D2",
+		.K0	= "1B97FE0A190E2021EB30753E1B6E1E77B0754B1D684610355864104963463833",
+		.usage	= 1,
+		.ct	= "2C9C1570133C99BF6A34BC1B0212002FD194338749DB4135497A347CFCD9D18A12",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "enc 9 plain",
+		.plain	= "'9 bytesss",
+		.conf	= "AD4FF904D34E555384B14100FC465F88",
+		.K0	= "32164C5B434D1D1538E4CFD9BE8040FE8C4AC7ACC4B93D3314D2133668147A05",
+		.usage	= 2,
+		.ct	= "9C6DE75F812DE7ED0D28B2963557A115640998275B0AF5152709913FF52A2A9C8E63B872F92E64C839",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "enc 13 plain",
+		.plain	= "'13 bytes byte",
+		.conf	= "CF9BCA6DF1144E0C0AF9B8F34C90D514",
+		.K0	= "B038B132CD8E06612267FAB7170066D88AECCBA0B744BFC60DC89BCA182D0715",
+		.usage	= 3,
+		.ct	= "EEEC85A9813CDC536772AB9B42DEFC5706F726E975DDE05A87EB5406EA324CA185C9986B42AABE794B84821BEE",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "enc 30 plain",
+		.plain	= "'30 bytes bytes bytes bytes byt",
+		.conf	= "644DEF38DA35007275878D216855E228",
+		.K0	= "CCFCD349BF4C6677E86E4B02B8EAB924A546AC731CF9BF6989B996E7D6BFBBA7",
+		.usage	= 4,
+		.ct	= "0E44680985855F2D1F1812529CA83BFD8E349DE6FD9ADA0BAAA048D68E265FEBF34AD1255A344999AD37146887A6C6845731AC7F46376A0504CD06571474",
+	},
+	{/* END */}
+};
+
+/*
+ * Checksum generation tests.
+ */
+const struct krb5_mic_test krb5_mic_tests[] = {
+	/* rfc8009 Appendix A */
+	{
+		.etype	= KRB5_ENCTYPE_AES128_CTS_HMAC_SHA256_128,
+		.name	= "mic",
+		.plain	= "000102030405060708090A0B0C0D0E0F1011121314",
+		.Kc	= "B31A018A48F54776F403E9A396325DC3",
+		.mic	= "D78367186643D67B411CBA9139FC1DEE",
+	}, {
+		.etype	= KRB5_ENCTYPE_AES256_CTS_HMAC_SHA384_192,
+		.name	= "mic",
+		.plain	= "000102030405060708090A0B0C0D0E0F1011121314",
+		.Kc	= "EF5718BE86CC84963D8BBB5031E9F5C4BA41F28FAF69E73D",
+		.mic	= "45EE791567EEFCA37F4AC1E0222DE80D43C3BFA06699672A",
+	},
+	/* rfc6803 sec 10 */
+	{
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "mic abc",
+		.plain	= "'abcdefghijk",
+		.K0	= "1DC46A8D763F4F93742BCBA3387576C3",
+		.usage	= 7,
+		.mic	= "1178E6C5C47A8C1AE0C4B9C7D4EB7B6B",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA128_CTS_CMAC,
+		.name	= "mic ABC",
+		.plain	= "'ABCDEFGHIJKLMNOPQRSTUVWXYZ",
+		.K0	= "5027BC231D0F3A9D23333F1CA6FDBE7C",
+		.usage	= 8,
+		.mic	= "D1B34F7004A731F23A0C00BF6C3F753A",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "mic 123",
+		.plain	= "'123456789",
+		.K0	= "B61C86CC4E5D2757545AD423399FB7031ECAB913CBB900BD7A3C6DD8BF92015B",
+		.usage	= 9,
+		.mic	= "87A12CFD2B96214810F01C826E7744B1",
+	}, {
+		.etype	= KRB5_ENCTYPE_CAMELLIA256_CTS_CMAC,
+		.name	= "mic !@#",
+		.plain	= "'!@#$%^&*()!@#$%^&*()!@#$%^&*()",
+		.K0	= "32164C5B434D1D1538E4CFD9BE8040FE8C4AC7ACC4B93D3314D2133668147A05",
+		.usage	= 10,
+		.mic	= "3FA0B42355E52B189187294AA252AB64",
+	},
+	{/* END */}
+};