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832e2f6dd0
Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.35 Removed upstreamed: bcm27xx/patches-6.6/950-1135-ax25-Fix-refcount-imbalance-on-inbound-connections.patch[1] Removed no longer needed: generic/pending-6.6/779-net-vxlan-don-t-learn-non-unicast-L2-destinations.patch[2] All other patches automatically rebased. Build system: x86/64 Build-tested: x86/64/AMD Cezanne, flogic/glinet_gl-mt6000, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3 Run-tested: x86/64/AMD Cezanne, flogic/glinet_gl-mt6000, flogic/xiaomi_redmi-router-ax6000-ubootmod, ramips/tplink_archer-a6-v3 1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.6.35&id=52100fd74ad07b53a4666feafff1cd11436362d3 2. As suggested by @DragonBluep, "This patch can be removed. It will never return false. And the upstream commit should fix the same issue: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit?h=v6.6.35&id=924f7bbfc5cfd029e417c56357ca01eae681fba6" Signed-off-by: John Audia <therealgraysky@proton.me>
211 lines
7.1 KiB
Diff
211 lines
7.1 KiB
Diff
From a779a482fb9b9f8fcdf8b2519c789b4b9bb5dd05 Mon Sep 17 00:00:00 2001
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From: Felix Fietkau <nbd@nbd.name>
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Date: Fri, 7 Jul 2017 16:56:48 +0200
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Subject: build: add a hack for removing non-essential module info
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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include/linux/module.h | 13 ++++++++-----
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include/linux/moduleparam.h | 15 ++++++++++++---
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init/Kconfig | 7 +++++++
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kernel/module.c | 5 ++++-
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scripts/mod/modpost.c | 12 ++++++++++++
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5 files changed, 43 insertions(+), 9 deletions(-)
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--- a/include/linux/module.h
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+++ b/include/linux/module.h
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@@ -164,6 +164,7 @@ extern void cleanup_module(void);
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/* Generic info of form tag = "info" */
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#define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
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+#define MODULE_INFO_STRIP(tag, info) __MODULE_INFO_STRIP(tag, tag, info)
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/* For userspace: you can also call me... */
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#define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
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@@ -233,12 +234,12 @@ extern void cleanup_module(void);
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* Author(s), use "Name <email>" or just "Name", for multiple
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* authors use multiple MODULE_AUTHOR() statements/lines.
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*/
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-#define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
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+#define MODULE_AUTHOR(_author) MODULE_INFO_STRIP(author, _author)
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/* What your module does. */
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-#define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
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+#define MODULE_DESCRIPTION(_description) MODULE_INFO_STRIP(description, _description)
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-#ifdef MODULE
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+#if defined(MODULE) && !defined(CONFIG_MODULE_STRIPPED)
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/* Creates an alias so file2alias.c can find device table. */
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#define MODULE_DEVICE_TABLE(type, name) \
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extern typeof(name) __mod_##type##__##name##_device_table \
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@@ -265,7 +266,9 @@ extern typeof(name) __mod_##type##__##na
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*/
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#if defined(MODULE) || !defined(CONFIG_SYSFS)
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-#define MODULE_VERSION(_version) MODULE_INFO(version, _version)
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+#define MODULE_VERSION(_version) MODULE_INFO_STRIP(version, _version)
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+#elif defined(CONFIG_MODULE_STRIPPED)
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+#define MODULE_VERSION(_version) __MODULE_INFO_DISABLED(version)
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#else
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#define MODULE_VERSION(_version) \
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MODULE_INFO(version, _version); \
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@@ -288,7 +291,7 @@ extern typeof(name) __mod_##type##__##na
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/* Optional firmware file (or files) needed by the module
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* format is simply firmware file name. Multiple firmware
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* files require multiple MODULE_FIRMWARE() specifiers */
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-#define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
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+#define MODULE_FIRMWARE(_firmware) MODULE_INFO_STRIP(firmware, _firmware)
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#define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, __stringify(ns))
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--- a/include/linux/moduleparam.h
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+++ b/include/linux/moduleparam.h
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@@ -20,6 +20,16 @@
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/* Chosen so that structs with an unsigned long line up. */
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#define MAX_PARAM_PREFIX_LEN (64 - sizeof(unsigned long))
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+/* This struct is here for syntactic coherency, it is not used */
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+#define __MODULE_INFO_DISABLED(name) \
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+ struct __UNIQUE_ID(name) {}
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+
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+#ifdef CONFIG_MODULE_STRIPPED
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+#define __MODULE_INFO_STRIP(tag, name, info) __MODULE_INFO_DISABLED(name)
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+#else
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+#define __MODULE_INFO_STRIP(tag, name, info) __MODULE_INFO(tag, name, info)
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+#endif
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+
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#define __MODULE_INFO(tag, name, info) \
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static const char __UNIQUE_ID(name)[] \
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__used __section(".modinfo") __aligned(1) \
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@@ -31,7 +41,7 @@
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/* One for each parameter, describing how to use it. Some files do
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multiple of these per line, so can't just use MODULE_INFO. */
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#define MODULE_PARM_DESC(_parm, desc) \
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- __MODULE_INFO(parm, _parm, #_parm ":" desc)
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+ __MODULE_INFO_STRIP(parm, _parm, #_parm ":" desc)
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struct kernel_param;
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--- a/kernel/module/Kconfig
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+++ b/kernel/module/Kconfig
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@@ -389,4 +389,11 @@ config MODULES_TREE_LOOKUP
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def_bool y
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depends on PERF_EVENTS || TRACING || CFI_CLANG
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+config MODULE_STRIPPED
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+ bool "Reduce module size"
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+ depends on MODULES
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+ help
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+ Remove module parameter descriptions, author info, version, aliases,
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+ device tables, etc.
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+
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endif # MODULES
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--- a/kernel/module/main.c
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+++ b/kernel/module/main.c
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@@ -997,6 +997,7 @@ size_t modinfo_attrs_count = ARRAY_SIZE(
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static const char vermagic[] = VERMAGIC_STRING;
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+#if defined(CONFIG_MODVERSIONS) || !defined(CONFIG_MODULE_STRIPPED)
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int try_to_force_load(struct module *mod, const char *reason)
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{
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#ifdef CONFIG_MODULE_FORCE_LOAD
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@@ -1008,6 +1009,7 @@ int try_to_force_load(struct module *mod
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return -ENOEXEC;
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#endif
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}
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+#endif
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/* Parse tag=value strings from .modinfo section */
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char *module_next_tag_pair(char *string, unsigned long *secsize)
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@@ -2075,9 +2077,11 @@ static void module_augment_kernel_taints
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static int check_modinfo(struct module *mod, struct load_info *info, int flags)
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{
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- const char *modmagic = get_modinfo(info, "vermagic");
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int err;
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+#ifndef CONFIG_MODULE_STRIPPED
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+ const char *modmagic = get_modinfo(info, "vermagic");
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+
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if (flags & MODULE_INIT_IGNORE_VERMAGIC)
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modmagic = NULL;
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@@ -2091,6 +2095,7 @@ static int check_modinfo(struct module *
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info->name, modmagic, vermagic);
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return -ENOEXEC;
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}
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+#endif
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err = check_modinfo_livepatch(mod, info);
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if (err)
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--- a/scripts/mod/modpost.c
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+++ b/scripts/mod/modpost.c
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@@ -1693,7 +1693,9 @@ static void read_symbols(const char *mod
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symname = remove_dot(info.strtab + sym->st_name);
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handle_symbol(mod, &info, sym, symname);
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+#ifndef CONFIG_MODULE_STRIPPED
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handle_moddevtable(mod, &info, sym, symname);
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+#endif
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}
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check_sec_ref(mod, &info);
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@@ -1866,8 +1868,10 @@ static void add_header(struct buffer *b,
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buf_printf(b, "BUILD_SALT;\n");
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buf_printf(b, "BUILD_LTO_INFO;\n");
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buf_printf(b, "\n");
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+#ifndef CONFIG_MODULE_STRIPPED
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buf_printf(b, "MODULE_INFO(vermagic, VERMAGIC_STRING);\n");
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buf_printf(b, "MODULE_INFO(name, KBUILD_MODNAME);\n");
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+#endif
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buf_printf(b, "\n");
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buf_printf(b, "__visible struct module __this_module\n");
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buf_printf(b, "__section(\".gnu.linkonce.this_module\") = {\n");
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@@ -1881,8 +1885,10 @@ static void add_header(struct buffer *b,
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buf_printf(b, "\t.arch = MODULE_ARCH_INIT,\n");
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buf_printf(b, "};\n");
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+#ifndef CONFIG_MODULE_STRIPPED
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if (!external_module)
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buf_printf(b, "\nMODULE_INFO(intree, \"Y\");\n");
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+#endif
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buf_printf(b,
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"\n"
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@@ -1890,8 +1896,10 @@ static void add_header(struct buffer *b,
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"MODULE_INFO(retpoline, \"Y\");\n"
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"#endif\n");
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+#ifndef CONFIG_MODULE_STRIPPED
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if (strstarts(mod->name, "drivers/staging"))
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buf_printf(b, "\nMODULE_INFO(staging, \"Y\");\n");
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+#endif
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if (strstarts(mod->name, "tools/testing"))
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buf_printf(b, "\nMODULE_INFO(test, \"Y\");\n");
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@@ -2001,11 +2009,13 @@ static void add_depends(struct buffer *b
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static void add_srcversion(struct buffer *b, struct module *mod)
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{
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+#ifndef CONFIG_MODULE_STRIPPED
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if (mod->srcversion[0]) {
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buf_printf(b, "\n");
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buf_printf(b, "MODULE_INFO(srcversion, \"%s\");\n",
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mod->srcversion);
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}
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+#endif
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}
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static void write_buf(struct buffer *b, const char *fname)
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@@ -2088,7 +2098,9 @@ static void write_mod_c_file(struct modu
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add_exported_symbols(&buf, mod);
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add_versions(&buf, mod);
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add_depends(&buf, mod);
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+#ifndef CONFIG_MODULE_STRIPPED
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add_moddevtable(&buf, mod);
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+#endif
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add_srcversion(&buf, mod);
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ret = snprintf(fname, sizeof(fname), "%s.mod.c", mod->name);
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