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Add patches for kernel 6.6
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Ysurac committed Nov 2, 2023
1 parent 378defd commit dc315f4
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26 changes: 26 additions & 0 deletions 6.6/target/linux/generic/config-6.6
Original file line number Diff line number Diff line change
Expand Up @@ -8097,3 +8097,29 @@ CONFIG_FB_DEVICE=y
# CONFIG_TMPFS_QUOTA is not set
# CONFIG_ADF4377 is not set
# CONFIG_OPT4001 is not set
# CONFIG_TI_TMAG5273 is not set
# CONFIG_X9250 is not set
# CONFIG_MPRLS0025PA is not set
# CONFIG_IRSD200 is not set
# CONFIG_MAX30208 is not set
# CONFIG_XFS_SUPPORT_ASCII_CI is not set
# CONFIG_SQUASHFS_CHOICE_DECOMP_BY_MOUNT is not set
CONFIG_SQUASHFS_COMPILE_DECOMP_MULTI_PERCPU=y
# CONFIG_SQUASHFS_COMPILE_DECOMP_SINGLE is not set
# CONFIG_SQUASHFS_COMPILE_DECOMP_MULTI is not set
# CONFIG_NFSD_V2 is not set
# CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA1 is not set
# CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_CAMELLIA is not set
# CONFIG_RPCSEC_GSS_KRB5_ENCTYPES_AES_SHA2 is not set
# CONFIG_LIST_HARDENED is not set
# CONFIG_CRYPTO_JITTERENTROPY_TESTINTERFACE is not set
# CONFIG_CRYPTO_ARIA_AESNI_AVX2_X86_64 is not set
# CONFIG_CRYPTO_ARIA_GFNI_AVX512_X86_64 is not set
# CONFIG_SWIOTLB_DYNAMIC is not set
CONFIG_DEBUG_INFO_COMPRESSED_NONE=y
# CONFIG_DEBUG_INFO_COMPRESSED_ZLIB is not set
# CONFIG_PER_VMA_LOCK_STATS is not set
# CONFIG_WQ_CPU_INTENSIVE_REPORT is not set
# CONFIG_NMI_CHECK_CPU is not set
# CONFIG_RCU_CPU_STALL_CPUTIME is not set
# CONFIG_TEST_DHRY is not set
210 changes: 210 additions & 0 deletions 6.6/target/linux/generic/hack-6.6/204-module_strip.patch
Original file line number Diff line number Diff line change
@@ -0,0 +1,210 @@
From a779a482fb9b9f8fcdf8b2519c789b4b9bb5dd05 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <[email protected]>
Date: Fri, 7 Jul 2017 16:56:48 +0200
Subject: build: add a hack for removing non-essential module info

Signed-off-by: Felix Fietkau <[email protected]>
---
include/linux/module.h | 13 ++++++++-----
include/linux/moduleparam.h | 15 ++++++++++++---
init/Kconfig | 7 +++++++
kernel/module.c | 5 ++++-
scripts/mod/modpost.c | 12 ++++++++++++
5 files changed, 43 insertions(+), 9 deletions(-)

--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -163,6 +163,7 @@ extern void cleanup_module(void);

/* Generic info of form tag = "info" */
#define MODULE_INFO(tag, info) __MODULE_INFO(tag, tag, info)
+#define MODULE_INFO_STRIP(tag, info) __MODULE_INFO_STRIP(tag, tag, info)

/* For userspace: you can also call me... */
#define MODULE_ALIAS(_alias) MODULE_INFO(alias, _alias)
@@ -232,12 +233,12 @@ extern void cleanup_module(void);
* Author(s), use "Name <email>" or just "Name", for multiple
* authors use multiple MODULE_AUTHOR() statements/lines.
*/
-#define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
+#define MODULE_AUTHOR(_author) MODULE_INFO_STRIP(author, _author)

/* What your module does. */
-#define MODULE_DESCRIPTION(_description) MODULE_INFO(description, _description)
+#define MODULE_DESCRIPTION(_description) MODULE_INFO_STRIP(description, _description)

-#ifdef MODULE
+#if defined(MODULE) && !defined(CONFIG_MODULE_STRIPPED)
/* Creates an alias so file2alias.c can find device table. */
#define MODULE_DEVICE_TABLE(type, name) \
extern typeof(name) __mod_##type##__##name##_device_table \
@@ -264,7 +265,9 @@ extern typeof(name) __mod_##type##__##na
*/

#if defined(MODULE) || !defined(CONFIG_SYSFS)
-#define MODULE_VERSION(_version) MODULE_INFO(version, _version)
+#define MODULE_VERSION(_version) MODULE_INFO_STRIP(version, _version)
+#elif defined(CONFIG_MODULE_STRIPPED)
+#define MODULE_VERSION(_version) __MODULE_INFO_DISABLED(version)
#else
#define MODULE_VERSION(_version) \
MODULE_INFO(version, _version); \
@@ -287,7 +290,7 @@ extern typeof(name) __mod_##type##__##na
/* Optional firmware file (or files) needed by the module
* format is simply firmware file name. Multiple firmware
* files require multiple MODULE_FIRMWARE() specifiers */
-#define MODULE_FIRMWARE(_firmware) MODULE_INFO(firmware, _firmware)
+#define MODULE_FIRMWARE(_firmware) MODULE_INFO_STRIP(firmware, _firmware)

#define MODULE_IMPORT_NS(ns) MODULE_INFO(import_ns, __stringify(ns))

--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -20,6 +20,16 @@
/* Chosen so that structs with an unsigned long line up. */
#define MAX_PARAM_PREFIX_LEN (64 - sizeof(unsigned long))

+/* This struct is here for syntactic coherency, it is not used */
+#define __MODULE_INFO_DISABLED(name) \
+ struct __UNIQUE_ID(name) {}
+
+#ifdef CONFIG_MODULE_STRIPPED
+#define __MODULE_INFO_STRIP(tag, name, info) __MODULE_INFO_DISABLED(name)
+#else
+#define __MODULE_INFO_STRIP(tag, name, info) __MODULE_INFO(tag, name, info)
+#endif
+
#define __MODULE_INFO(tag, name, info) \
static const char __UNIQUE_ID(name)[] \
__used __section(".modinfo") __aligned(1) \
@@ -31,7 +41,7 @@
/* One for each parameter, describing how to use it. Some files do
multiple of these per line, so can't just use MODULE_INFO. */
#define MODULE_PARM_DESC(_parm, desc) \
- __MODULE_INFO(parm, _parm, #_parm ":" desc)
+ __MODULE_INFO_STRIP(parm, _parm, #_parm ":" desc)

struct kernel_param;

--- a/kernel/module/Kconfig
+++ b/kernel/module/Kconfig
@@ -290,4 +290,11 @@ config MODULES_TREE_LOOKUP
def_bool y
depends on PERF_EVENTS || TRACING || CFI_CLANG

+config MODULE_STRIPPED
+ bool "Reduce module size"
+ depends on MODULES
+ help
+ Remove module parameter descriptions, author info, version, aliases,
+ device tables, etc.
+
endif # MODULES
--- a/kernel/module/main.c
+++ b/kernel/module/main.c
@@ -988,6 +988,7 @@ size_t modinfo_attrs_count = ARRAY_SIZE(

static const char vermagic[] = VERMAGIC_STRING;

+#if defined(CONFIG_MODVERSIONS) || !defined(CONFIG_MODULE_STRIPPED)
int try_to_force_load(struct module *mod, const char *reason)
{
#ifdef CONFIG_MODULE_FORCE_LOAD
@@ -999,6 +1000,7 @@ int try_to_force_load(struct module *mod
return -ENOEXEC;
#endif
}
+#endif

static char *get_modinfo(const struct load_info *info, const char *tag);
static char *get_next_modinfo(const struct load_info *info, const char *tag,
@@ -1958,9 +1960,11 @@ static int setup_load_info(struct load_i

static int check_modinfo(struct module *mod, struct load_info *info, int flags)
{
- const char *modmagic = get_modinfo(info, "vermagic");
int err;

+#ifndef CONFIG_MODULE_STRIPPED
+ const char *modmagic = get_modinfo(info, "vermagic");
+
if (flags & MODULE_INIT_IGNORE_VERMAGIC)
modmagic = NULL;

@@ -1981,6 +1985,7 @@ static int check_modinfo(struct module *
mod->name);
add_taint_module(mod, TAINT_OOT_MODULE, LOCKDEP_STILL_OK);
}
+#endif

check_modinfo_retpoline(mod, info);

--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -1781,7 +1781,9 @@ static void read_symbols(const char *mod
symname = remove_dot(info.strtab + sym->st_name);

handle_symbol(mod, &info, sym, symname);
+#ifndef CONFIG_MODULE_STRIPPED
handle_moddevtable(mod, &info, sym, symname);
+#endif
}

for (sym = info.symtab_start; sym < info.symtab_stop; sym++) {
@@ -1944,8 +1946,10 @@ static void add_header(struct buffer *b,
buf_printf(b, "BUILD_SALT;\n");
buf_printf(b, "BUILD_LTO_INFO;\n");
buf_printf(b, "\n");
+#ifndef CONFIG_MODULE_STRIPPED
buf_printf(b, "MODULE_INFO(vermagic, VERMAGIC_STRING);\n");
buf_printf(b, "MODULE_INFO(name, KBUILD_MODNAME);\n");
+#endif
buf_printf(b, "\n");
buf_printf(b, "__visible struct module __this_module\n");
buf_printf(b, "__section(\".gnu.linkonce.this_module\") = {\n");
@@ -1959,8 +1963,10 @@ static void add_header(struct buffer *b,
buf_printf(b, "\t.arch = MODULE_ARCH_INIT,\n");
buf_printf(b, "};\n");

+#ifndef CONFIG_MODULE_STRIPPED
if (!external_module)
buf_printf(b, "\nMODULE_INFO(intree, \"Y\");\n");
+#endif

buf_printf(b,
"\n"
@@ -1968,8 +1974,10 @@ static void add_header(struct buffer *b,
"MODULE_INFO(retpoline, \"Y\");\n"
"#endif\n");

+#ifndef CONFIG_MODULE_STRIPPED
if (strstarts(mod->name, "drivers/staging"))
buf_printf(b, "\nMODULE_INFO(staging, \"Y\");\n");
+#endif

if (strstarts(mod->name, "tools/testing"))
buf_printf(b, "\nMODULE_INFO(test, \"Y\");\n");
@@ -2065,11 +2073,13 @@ static void add_depends(struct buffer *b

static void add_srcversion(struct buffer *b, struct module *mod)
{
+#ifndef CONFIG_MODULE_STRIPPED
if (mod->srcversion[0]) {
buf_printf(b, "\n");
buf_printf(b, "MODULE_INFO(srcversion, \"%s\");\n",
mod->srcversion);
}
+#endif
}

static void write_buf(struct buffer *b, const char *fname)
@@ -2155,7 +2165,9 @@ static void write_mod_c_file(struct modu
add_exported_symbols(&buf, mod);
add_versions(&buf, mod);
add_depends(&buf, mod);
+#ifndef CONFIG_MODULE_STRIPPED
add_moddevtable(&buf, mod);
+#endif
add_srcversion(&buf, mod);

ret = snprintf(fname, sizeof(fname), "%s.mod.c", mod->name);
Original file line number Diff line number Diff line change
@@ -0,0 +1,41 @@
From 310e8e04a05d9eb43fa9dd7f00143300afcaa37a Mon Sep 17 00:00:00 2001
From: David Bauer <[email protected]>
Date: Fri, 11 Nov 2022 13:33:44 +0100
Subject: [PATCH] kconfig: abort configuration on unset symbol

When a target configuration has unset Kconfig symbols, the build will
fail when OpenWrt is compiled with V=s and stdin is connected to a tty.

In case OpenWrt is compiled without either of these preconditions, the
build will succeed with the symbols in question being unset.

Modify the kernel configuration in a way it fails on unset symbols
regardless of the aforementioned preconditions.

Signed-off-by: David Bauer <[email protected]>
---
scripts/kconfig/conf.c | 6 ++++++
1 file changed, 6 insertions(+)

--- a/scripts/kconfig/conf.c
+++ b/scripts/kconfig/conf.c
@@ -338,6 +338,9 @@ static int conf_askvalue(struct symbol *
}
/* fall through */
default:
+ if (!tty_stdio && getenv("FAIL_ON_UNCONFIGURED")) {
+ exit(1);
+ }
fflush(stdout);
xfgets(line, sizeof(line), stdin);
break;
@@ -520,6 +523,9 @@ static int conf_choice(struct menu *menu
}
/* fall through */
case oldaskconfig:
+ if (!tty_stdio && getenv("FAIL_ON_UNCONFIGURED")) {
+ exit(1);
+ }
fflush(stdout);
xfgets(line, sizeof(line), stdin);
strip(line);
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