Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E087EC05027 for ; Tue, 14 Mar 2023 20:22:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230284AbjCNUW3 (ORCPT ); Tue, 14 Mar 2023 16:22:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229838AbjCNUW0 (ORCPT ); Tue, 14 Mar 2023 16:22:26 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C6BC4ECDC; Tue, 14 Mar 2023 13:22:24 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id AB32221CB4; Tue, 14 Mar 2023 20:22:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1678825342; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=4Aw3V86LIOYDUw0BjEDYLHSI2QnMpjiNb3WcGHQmkLg=; b=uS9LQFF1ytH0FXk0jcx98kLuVXvDlWGuWAnmTQJ7sfWoepDTbtg3kjPRQKzFcsrvHmase3 TdWxmZ6C6ltBtiuLFVcUvoXamDlcXPiNJStyTGRkWyXy8M3fe9vfowlTfEuBzSeYaShHSr j+qOoRTzcqT595/CcbDEdelinMe04oI= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1678825342; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=4Aw3V86LIOYDUw0BjEDYLHSI2QnMpjiNb3WcGHQmkLg=; b=lRMWVSY49EnZhHAOF2kZBSpMj02UTwsKN1Qyp+EMgySAupjzEfIs218b/G7NtxPNv9C6H6 I5Ee/2nYvK3QJSDQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 0682613A1B; Tue, 14 Mar 2023 20:22:20 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id U/y7HHzXEGTXXQAAMHmgww (envelope-from ); Tue, 14 Mar 2023 20:22:20 +0000 Date: Tue, 14 Mar 2023 17:22:16 -0300 From: Marcos Paulo de Souza To: Joe Lawrence Cc: live-patching@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org, Josh Poimboeuf , Miroslav Benes , Petr Mladek , Marcos Paulo de Souza Subject: Re: [PATCH v7 06/10] livepatch/selftests: add klp-convert Message-ID: <20230314202216.4zauyacdnhugyorw@daedalus> References: <20230306140824.3858543-1-joe.lawrence@redhat.com> <20230306140824.3858543-7-joe.lawrence@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230306140824.3858543-7-joe.lawrence@redhat.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Mar 06, 2023 at 09:08:20AM -0500, Joe Lawrence wrote: > Add a simple klp-convert livepatch selftest that exercises various > symbol homonym sympos scenarios. LGTM: Reviewed-by: Marcos Paulo de Souza > > Signed-off-by: Joe Lawrence > --- > lib/livepatch/Makefile | 7 + > lib/livepatch/test_klp_convert.h | 14 ++ > lib/livepatch/test_klp_convert1.c | 113 +++++++++++++++ > lib/livepatch/test_klp_convert2.c | 110 ++++++++++++++ > lib/livepatch/test_klp_convert_mod_a.c | 25 ++++ > lib/livepatch/test_klp_convert_mod_b.c | 13 ++ > .../selftests/livepatch/test-livepatch.sh | 134 ++++++++++++++++++ > 7 files changed, 416 insertions(+) > create mode 100644 lib/livepatch/test_klp_convert.h > create mode 100644 lib/livepatch/test_klp_convert1.c > create mode 100644 lib/livepatch/test_klp_convert2.c > create mode 100644 lib/livepatch/test_klp_convert_mod_a.c > create mode 100644 lib/livepatch/test_klp_convert_mod_b.c > > diff --git a/lib/livepatch/Makefile b/lib/livepatch/Makefile > index dcc912b3478f..ced00515ff84 100644 > --- a/lib/livepatch/Makefile > +++ b/lib/livepatch/Makefile > @@ -7,8 +7,15 @@ obj-$(CONFIG_TEST_LIVEPATCH) += test_klp_atomic_replace.o \ > test_klp_callbacks_demo2.o \ > test_klp_callbacks_busy.o \ > test_klp_callbacks_mod.o \ > + test_klp_convert1.o \ > + test_klp_convert2.o \ > + test_klp_convert_mod.o \ > test_klp_livepatch.o \ > test_klp_shadow_vars.o \ > test_klp_state.o \ > test_klp_state2.o \ > test_klp_state3.o > + > +test_klp_convert_mod-y := \ > + test_klp_convert_mod_a.o \ > + test_klp_convert_mod_b.o > diff --git a/lib/livepatch/test_klp_convert.h b/lib/livepatch/test_klp_convert.h > new file mode 100644 > index 000000000000..5d97bc546d6e > --- /dev/null > +++ b/lib/livepatch/test_klp_convert.h > @@ -0,0 +1,14 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > + > +#ifndef _TEST_KLP_CONVERT_ > +#define _TEST_KLP_CONVERT_ > + > +/* klp-convert symbols - vmlinux */ > +extern char *saved_command_line; > +/* klp-convert symbols - test_klp_convert_mod.ko */ > +extern char driver_name[]; > +extern char homonym_string[]; > +extern const char *get_homonym_string(void); > +extern const char *test_klp_get_driver_name(void); > + > +#endif > diff --git a/lib/livepatch/test_klp_convert1.c b/lib/livepatch/test_klp_convert1.c > new file mode 100644 > index 000000000000..d4e1163c01cc > --- /dev/null > +++ b/lib/livepatch/test_klp_convert1.c > @@ -0,0 +1,113 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (C) 2019 Joe Lawrence > + > +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt > + > +#include > +#include > +#include > +#include "test_klp_convert.h" > + > +static noinline void print_saved_command_line(void) > +{ > + pr_info("saved_command_line, 0: %s\n", saved_command_line); > +} > + > +static noinline void print_driver_name(void) > +{ > + pr_info("driver_name, 0: %s\n", driver_name); > + pr_info("test_klp_get_driver_name(), 0: %s\n", test_klp_get_driver_name()); > +} > + > +static noinline void print_homonym_string(void) > +{ > + pr_info("homonym_string, 1: %s\n", homonym_string); > + pr_info("get_homonym_string(), 1: %s\n", get_homonym_string()); > +} > + > +/* provide a sysfs handle to invoke debug functions */ > +static int print_debug; > +static int print_debug_set(const char *val, const struct kernel_param *kp) > +{ > + print_saved_command_line(); > + print_driver_name(); > + print_homonym_string(); > + > + return 0; > +} > +static const struct kernel_param_ops print_debug_ops = { > + .set = print_debug_set, > + .get = param_get_int, > +}; > +module_param_cb(print_debug, &print_debug_ops, &print_debug, 0200); > +MODULE_PARM_DESC(print_debug, "print klp-convert debugging info"); > + > +/* > + * saved_command_line is a unique symbol, so the sympos annotation is > + * optional. Provide to test that sympos=0 works correctly. > + */ > +KLP_MODULE_RELOC(vmlinux) vmlinux_relocs[] = { > + KLP_SYMPOS(saved_command_line, 0) > +}; > + > +/* > + * driver_name symbols can be found in vmlinux (multiple) and also > + * test_klp_convert_mod, therefore the annotation is required to > + * clarify that we want the one from test_klp_convert_mod. > + * > + * test_klp_convert_mod contains multiple homonym_string and > + * get_homonym_string symbols, test resolving the first set here and > + * the others in test_klp_convert2.c > + * > + * test_klp_get_driver_name is a uniquely named symbol, test that sympos=0 > + * work correctly. > + */ > +KLP_MODULE_RELOC(test_klp_convert_mod) test_klp_convert_mod_relocs_a[] = { > + KLP_SYMPOS(driver_name, 0), > + KLP_SYMPOS(homonym_string, 1), > + KLP_SYMPOS(get_homonym_string, 1), > + KLP_SYMPOS(test_klp_get_driver_name, 0), > +}; > + > +static struct klp_func funcs[] = { > + { > + }, { } > +}; > + > +static struct klp_object objs[] = { > + { > + /* name being NULL means vmlinux */ > + .funcs = funcs, > + }, > + { > + .name = "test_klp_convert_mod", > + .funcs = funcs, > + }, { } > +}; > + > +static struct klp_patch patch = { > + .mod = THIS_MODULE, > + .objs = objs, > +}; > + > +static int test_klp_convert_init(void) > +{ > + int ret; > + > + ret = klp_enable_patch(&patch); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static void test_klp_convert_exit(void) > +{ > +} > + > +module_init(test_klp_convert_init); > +module_exit(test_klp_convert_exit); > +MODULE_LICENSE("GPL"); > +MODULE_AUTHOR("Joe Lawrence "); > +MODULE_DESCRIPTION("Livepatch test: klp-convert1"); > +MODULE_INFO(livepatch, "Y"); > diff --git a/lib/livepatch/test_klp_convert2.c b/lib/livepatch/test_klp_convert2.c > new file mode 100644 > index 000000000000..2a2a153aa0b9 > --- /dev/null > +++ b/lib/livepatch/test_klp_convert2.c > @@ -0,0 +1,110 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (C) 2019 Joe Lawrence > + > +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt > + > +#include > +#include > +#include > +#include "test_klp_convert.h" > + > +static noinline void print_saved_command_line(void) > +{ > + pr_info("saved_command_line (auto): %s\n", saved_command_line); > +} > + > +static noinline void print_driver_name(void) > +{ > + pr_info("driver_name, 0: %s\n", driver_name); > + pr_info("test_klp_get_driver_name(), (auto): %s\n", test_klp_get_driver_name()); > +} > + > +static noinline void print_homonym_string(void) > +{ > + pr_info("homonym_string, 2: %s\n", homonym_string); > + pr_info("get_homonym_string(), 2: %s\n", get_homonym_string()); > +} > + > +/* provide a sysfs handle to invoke debug functions */ > +static int print_debug; > +static int print_debug_set(const char *val, const struct kernel_param *kp) > +{ > + print_saved_command_line(); > + print_driver_name(); > + print_homonym_string(); > + > + return 0; > +} > +static const struct kernel_param_ops print_debug_ops = { > + .set = print_debug_set, > + .get = param_get_int, > +}; > +module_param_cb(print_debug, &print_debug_ops, &print_debug, 0200); > +MODULE_PARM_DESC(print_debug, "print klp-convert debugging info"); > + > +/* > + * saved_command_line is a uniquely named symbol, so the sympos > + * annotation is optional. Skip it and test that klp-convert can > + * resolve the symbol on its own. > + */ > + > +/* > + * driver_name symbols can be found in vmlinux (multiple) and also > + * test_klp_convert_mod, therefore the annotation is required to > + * clarify that we want the one from test_klp_convert_mod. > + * > + * test_klp_convert_mod contains multiple homonym_string symbols, > + * test_klp_convert1.c resolved to the first one, resolve to the > + * second one here. > + * > + * test_klp_get_driver_name is a uniquely named symbol, test klp-convert can > + * resolve it automatically. > + */ > +KLP_MODULE_RELOC(test_klp_convert_mod) test_klp_convert_mod_relocs_a[] = { > + KLP_SYMPOS(driver_name, 0), > + KLP_SYMPOS(homonym_string, 2), > + KLP_SYMPOS(get_homonym_string, 2), > +}; > + > +static struct klp_func funcs[] = { > + { > + }, { } > +}; > + > +static struct klp_object objs[] = { > + { > + /* name being NULL means vmlinux */ > + .funcs = funcs, > + }, > + { > + .name = "test_klp_convert_mod", > + .funcs = funcs, > + }, { } > +}; > + > +static struct klp_patch patch = { > + .mod = THIS_MODULE, > + .objs = objs, > +}; > + > +static int test_klp_convert_init(void) > +{ > + int ret; > + > + ret = klp_enable_patch(&patch); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static void test_klp_convert_exit(void) > +{ > +} > + > +module_init(test_klp_convert_init); > +module_exit(test_klp_convert_exit); > +MODULE_LICENSE("GPL"); > +MODULE_AUTHOR("Joe Lawrence "); > +MODULE_DESCRIPTION("Livepatch test: klp-convert2"); > +MODULE_INFO(livepatch, "Y"); > diff --git a/lib/livepatch/test_klp_convert_mod_a.c b/lib/livepatch/test_klp_convert_mod_a.c > new file mode 100644 > index 000000000000..ae5e911fbb9b > --- /dev/null > +++ b/lib/livepatch/test_klp_convert_mod_a.c > @@ -0,0 +1,25 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (C) 2019 Joe Lawrence > + > +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt > + > +#include > +#include > + > +/* Unique symbols that don't need sympos annotation */ > +static const char driver_name[] = KBUILD_MODNAME; > +__used static const char *test_klp_get_driver_name(void) > +{ > + return driver_name; > +} > + > +/* Common symbol names that need sympos */ > +static const char homonym_string[] = "homonym string A"; > +__used static const char *get_homonym_string(void) > +{ > + return homonym_string; > +} > + > +MODULE_LICENSE("GPL"); > +MODULE_AUTHOR("Joe Lawrence "); > +MODULE_DESCRIPTION("Livepatch test: klp-convert module"); > diff --git a/lib/livepatch/test_klp_convert_mod_b.c b/lib/livepatch/test_klp_convert_mod_b.c > new file mode 100644 > index 000000000000..5eca8a4cae38 > --- /dev/null > +++ b/lib/livepatch/test_klp_convert_mod_b.c > @@ -0,0 +1,13 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (C) 2019 Joe Lawrence > + > +/* > + * A second compilation unit to provide another set of similarly named > + * symbols, forcing a livepatch to use sympos annotations. > + */ > + > +static const char homonym_string[] = "homonym string B"; > +__used static const char *get_homonym_string(void) > +{ > + return homonym_string; > +} > diff --git a/tools/testing/selftests/livepatch/test-livepatch.sh b/tools/testing/selftests/livepatch/test-livepatch.sh > index 5fe79ac34be1..25c21ddf30f0 100755 > --- a/tools/testing/selftests/livepatch/test-livepatch.sh > +++ b/tools/testing/selftests/livepatch/test-livepatch.sh > @@ -6,6 +6,10 @@ > > MOD_LIVEPATCH=test_klp_livepatch > MOD_REPLACE=test_klp_atomic_replace > +MOD_KLP_CONVERT_MOD=test_klp_convert_mod > +MOD_KLP_CONVERT1=test_klp_convert1 > +MOD_KLP_CONVERT2=test_klp_convert2 > +MOD_KLP_CONVERT_SECTIONS=test_klp_convert_sections > > setup_config > > @@ -159,4 +163,134 @@ livepatch: '$MOD_REPLACE': unpatching complete > % rmmod $MOD_REPLACE" > > > +# TEST: klp-convert symbols > +# - load a livepatch that modifies the output from /proc/cmdline > +# including a reference to vmlinux-local symbol that klp-convert > +# will process > +# - verify correct behavior > +# - unload the livepatch and make sure the patch was removed > + > +start_test "klp-convert symbols" > + > +saved_cmdline=$(cat /proc/cmdline) > + > +load_mod $MOD_KLP_CONVERT_MOD > + > +load_lp $MOD_KLP_CONVERT1 > +echo 1 > /sys/module/$MOD_KLP_CONVERT1/parameters/print_debug > +disable_lp $MOD_KLP_CONVERT1 > +unload_lp $MOD_KLP_CONVERT1 > + > +load_lp $MOD_KLP_CONVERT2 > +echo 1 > /sys/module/$MOD_KLP_CONVERT2/parameters/print_debug > +disable_lp $MOD_KLP_CONVERT2 > +unload_lp $MOD_KLP_CONVERT2 > + > +unload_mod $MOD_KLP_CONVERT_MOD > + > +check_result "% modprobe $MOD_KLP_CONVERT_MOD > +% modprobe $MOD_KLP_CONVERT1 > +livepatch: enabling patch '$MOD_KLP_CONVERT1' > +livepatch: '$MOD_KLP_CONVERT1': initializing patching transition > +livepatch: '$MOD_KLP_CONVERT1': starting patching transition > +livepatch: '$MOD_KLP_CONVERT1': completing patching transition > +livepatch: '$MOD_KLP_CONVERT1': patching complete > +$MOD_KLP_CONVERT1: saved_command_line, 0: $saved_cmdline > +$MOD_KLP_CONVERT1: driver_name, 0: $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT1: test_klp_get_driver_name(), 0: $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT1: homonym_string, 1: homonym string A > +$MOD_KLP_CONVERT1: get_homonym_string(), 1: homonym string A > +% echo 0 > /sys/kernel/livepatch/$MOD_KLP_CONVERT1/enabled > +livepatch: '$MOD_KLP_CONVERT1': initializing unpatching transition > +livepatch: '$MOD_KLP_CONVERT1': starting unpatching transition > +livepatch: '$MOD_KLP_CONVERT1': completing unpatching transition > +livepatch: '$MOD_KLP_CONVERT1': unpatching complete > +% rmmod $MOD_KLP_CONVERT1 > +% modprobe $MOD_KLP_CONVERT2 > +livepatch: enabling patch '$MOD_KLP_CONVERT2' > +livepatch: '$MOD_KLP_CONVERT2': initializing patching transition > +livepatch: '$MOD_KLP_CONVERT2': starting patching transition > +livepatch: '$MOD_KLP_CONVERT2': completing patching transition > +livepatch: '$MOD_KLP_CONVERT2': patching complete > +$MOD_KLP_CONVERT2: saved_command_line (auto): $saved_cmdline > +$MOD_KLP_CONVERT2: driver_name, 0: $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT2: test_klp_get_driver_name(), (auto): $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT2: homonym_string, 2: homonym string B > +$MOD_KLP_CONVERT2: get_homonym_string(), 2: homonym string B > +% echo 0 > /sys/kernel/livepatch/$MOD_KLP_CONVERT2/enabled > +livepatch: '$MOD_KLP_CONVERT2': initializing unpatching transition > +livepatch: '$MOD_KLP_CONVERT2': starting unpatching transition > +livepatch: '$MOD_KLP_CONVERT2': completing unpatching transition > +livepatch: '$MOD_KLP_CONVERT2': unpatching complete > +% rmmod $MOD_KLP_CONVERT2 > +% rmmod $MOD_KLP_CONVERT_MOD" > + > + > +# TEST: klp-convert symbols (late module patching) > +# - load a livepatch that modifies the output from /proc/cmdline > +# including a reference to vmlinux-local symbol that klp-convert > +# will process > +# - load target module > +# - verify correct behavior > +# - unload the livepatch > + > +start_test "klp-convert symbols (late module patching)" > + > +saved_cmdline=$(cat /proc/cmdline) > + > +load_lp $MOD_KLP_CONVERT1 > +load_mod $MOD_KLP_CONVERT_MOD > +echo 1 > /sys/module/$MOD_KLP_CONVERT1/parameters/print_debug > +disable_lp $MOD_KLP_CONVERT1 > +unload_lp $MOD_KLP_CONVERT1 > +unload_mod $MOD_KLP_CONVERT_MOD > + > +load_lp $MOD_KLP_CONVERT2 > +load_mod $MOD_KLP_CONVERT_MOD > +echo 1 > /sys/module/$MOD_KLP_CONVERT2/parameters/print_debug > +disable_lp $MOD_KLP_CONVERT2 > +unload_lp $MOD_KLP_CONVERT2 > +unload_mod $MOD_KLP_CONVERT_MOD > + > +check_result "% modprobe $MOD_KLP_CONVERT1 > +livepatch: enabling patch '$MOD_KLP_CONVERT1' > +livepatch: '$MOD_KLP_CONVERT1': initializing patching transition > +livepatch: '$MOD_KLP_CONVERT1': starting patching transition > +livepatch: '$MOD_KLP_CONVERT1': completing patching transition > +livepatch: '$MOD_KLP_CONVERT1': patching complete > +% modprobe $MOD_KLP_CONVERT_MOD > +livepatch: applying patch '$MOD_KLP_CONVERT1' to loading module '$MOD_KLP_CONVERT_MOD' > +$MOD_KLP_CONVERT1: saved_command_line, 0: $saved_cmdline > +$MOD_KLP_CONVERT1: driver_name, 0: $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT1: test_klp_get_driver_name(), 0: $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT1: homonym_string, 1: homonym string A > +$MOD_KLP_CONVERT1: get_homonym_string(), 1: homonym string A > +% echo 0 > /sys/kernel/livepatch/$MOD_KLP_CONVERT1/enabled > +livepatch: '$MOD_KLP_CONVERT1': initializing unpatching transition > +livepatch: '$MOD_KLP_CONVERT1': starting unpatching transition > +livepatch: '$MOD_KLP_CONVERT1': completing unpatching transition > +livepatch: '$MOD_KLP_CONVERT1': unpatching complete > +% rmmod $MOD_KLP_CONVERT1 > +% rmmod $MOD_KLP_CONVERT_MOD > +% modprobe $MOD_KLP_CONVERT2 > +livepatch: enabling patch '$MOD_KLP_CONVERT2' > +livepatch: '$MOD_KLP_CONVERT2': initializing patching transition > +livepatch: '$MOD_KLP_CONVERT2': starting patching transition > +livepatch: '$MOD_KLP_CONVERT2': completing patching transition > +livepatch: '$MOD_KLP_CONVERT2': patching complete > +% modprobe $MOD_KLP_CONVERT_MOD > +livepatch: applying patch '$MOD_KLP_CONVERT2' to loading module '$MOD_KLP_CONVERT_MOD' > +$MOD_KLP_CONVERT2: saved_command_line (auto): $saved_cmdline > +$MOD_KLP_CONVERT2: driver_name, 0: $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT2: test_klp_get_driver_name(), (auto): $MOD_KLP_CONVERT_MOD > +$MOD_KLP_CONVERT2: homonym_string, 2: homonym string B > +$MOD_KLP_CONVERT2: get_homonym_string(), 2: homonym string B > +% echo 0 > /sys/kernel/livepatch/$MOD_KLP_CONVERT2/enabled > +livepatch: '$MOD_KLP_CONVERT2': initializing unpatching transition > +livepatch: '$MOD_KLP_CONVERT2': starting unpatching transition > +livepatch: '$MOD_KLP_CONVERT2': completing unpatching transition > +livepatch: '$MOD_KLP_CONVERT2': unpatching complete > +% rmmod $MOD_KLP_CONVERT2 > +% rmmod $MOD_KLP_CONVERT_MOD" > + > exit 0 > -- > 2.39.2 >