summaryrefslogtreecommitdiff
path: root/scripts
diff options
context:
space:
mode:
Diffstat (limited to 'scripts')
-rw-r--r--scripts/Makefile.build81
-rw-r--r--scripts/Makefile.extrawarn1
-rw-r--r--scripts/Makefile.ubsan4
-rwxr-xr-xscripts/bloat-o-meter3
-rwxr-xr-xscripts/checkpatch.pl6
-rwxr-xr-xscripts/decode_stacktrace.sh3
-rwxr-xr-xscripts/faddr2line33
-rw-r--r--scripts/gcc-plugins/cyc_complexity_plugin.c4
-rw-r--r--scripts/gcc-plugins/gcc-common.h1
-rw-r--r--scripts/gcc-plugins/latent_entropy_plugin.c25
-rw-r--r--scripts/gcc-plugins/sancov_plugin.c4
-rwxr-xr-xscripts/gcc-x86_64-has-stack-protector.sh2
-rw-r--r--scripts/kconfig/Makefile2
13 files changed, 132 insertions, 37 deletions
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index de46ab03f063..7675d11ee65e 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -159,7 +159,8 @@ cmd_cpp_i_c = $(CPP) $(c_flags) -o $@ $<
$(obj)/%.i: $(src)/%.c FORCE
$(call if_changed_dep,cpp_i_c)
-cmd_gensymtypes = \
+# These mirror gensymtypes_S and co below, keep them in synch.
+cmd_gensymtypes_c = \
$(CPP) -D__GENKSYMS__ $(c_flags) $< | \
$(GENKSYMS) $(if $(1), -T $(2)) \
$(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \
@@ -169,7 +170,7 @@ cmd_gensymtypes = \
quiet_cmd_cc_symtypes_c = SYM $(quiet_modtag) $@
cmd_cc_symtypes_c = \
set -e; \
- $(call cmd_gensymtypes,true,$@) >/dev/null; \
+ $(call cmd_gensymtypes_c,true,$@) >/dev/null; \
test -s $@ || rm -f $@
$(obj)/%.symtypes : $(src)/%.c FORCE
@@ -198,9 +199,10 @@ else
# the actual value of the checksum generated by genksyms
cmd_cc_o_c = $(CC) $(c_flags) -c -o $(@D)/.tmp_$(@F) $<
-cmd_modversions = \
+
+cmd_modversions_c = \
if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \
- $(call cmd_gensymtypes,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
+ $(call cmd_gensymtypes_c,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
> $(@D)/.tmp_$(@F:.o=.ver); \
\
$(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \
@@ -268,13 +270,14 @@ endif # CONFIG_STACK_VALIDATION
define rule_cc_o_c
$(call echo-cmd,checksrc) $(cmd_checksrc) \
$(call cmd_and_fixdep,cc_o_c) \
- $(cmd_modversions) \
+ $(cmd_modversions_c) \
$(cmd_objtool) \
$(call echo-cmd,record_mcount) $(cmd_record_mcount)
endef
define rule_as_o_S
$(call cmd_and_fixdep,as_o_S) \
+ $(cmd_modversions_S) \
$(cmd_objtool)
endef
@@ -314,6 +317,39 @@ modkern_aflags := $(KBUILD_AFLAGS_KERNEL) $(AFLAGS_KERNEL)
$(real-objs-m) : modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
$(real-objs-m:.o=.s): modkern_aflags := $(KBUILD_AFLAGS_MODULE) $(AFLAGS_MODULE)
+# .S file exports must have their C prototypes defined in asm/asm-prototypes.h
+# or a file that it includes, in order to get versioned symbols. We build a
+# dummy C file that includes asm-prototypes and the EXPORT_SYMBOL lines from
+# the .S file (with trailing ';'), and run genksyms on that, to extract vers.
+#
+# This is convoluted. The .S file must first be preprocessed to run guards and
+# expand names, then the resulting exports must be constructed into plain
+# EXPORT_SYMBOL(symbol); to build our dummy C file, and that gets preprocessed
+# to make the genksyms input.
+#
+# These mirror gensymtypes_c and co above, keep them in synch.
+cmd_gensymtypes_S = \
+ (echo "\#include <linux/kernel.h>" ; \
+ echo "\#include <asm/asm-prototypes.h>" ; \
+ $(CPP) $(a_flags) $< | \
+ grep "\<___EXPORT_SYMBOL\>" | \
+ sed 's/.*___EXPORT_SYMBOL[[:space:]]*\([a-zA-Z0-9_]*\)[[:space:]]*,.*/EXPORT_SYMBOL(\1);/' ) | \
+ $(CPP) -D__GENKSYMS__ $(c_flags) -xc - | \
+ $(GENKSYMS) $(if $(1), -T $(2)) \
+ $(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \
+ $(if $(KBUILD_PRESERVE),-p) \
+ -r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))
+
+quiet_cmd_cc_symtypes_S = SYM $(quiet_modtag) $@
+cmd_cc_symtypes_S = \
+ set -e; \
+ $(call cmd_gensymtypes_S,true,$@) >/dev/null; \
+ test -s $@ || rm -f $@
+
+$(obj)/%.symtypes : $(src)/%.S FORCE
+ $(call cmd,cc_symtypes_S)
+
+
quiet_cmd_cpp_s_S = CPP $(quiet_modtag) $@
cmd_cpp_s_S = $(CPP) $(a_flags) -o $@ $<
@@ -321,7 +357,37 @@ $(obj)/%.s: $(src)/%.S FORCE
$(call if_changed_dep,cpp_s_S)
quiet_cmd_as_o_S = AS $(quiet_modtag) $@
-cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
+
+ifndef CONFIG_MODVERSIONS
+cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
+
+else
+
+ASM_PROTOTYPES := $(wildcard $(srctree)/arch/$(SRCARCH)/include/asm/asm-prototypes.h)
+
+ifeq ($(ASM_PROTOTYPES),)
+cmd_as_o_S = $(CC) $(a_flags) -c -o $@ $<
+
+else
+
+# versioning matches the C process described above, with difference that
+# we parse asm-prototypes.h C header to get function definitions.
+
+cmd_as_o_S = $(CC) $(a_flags) -c -o $(@D)/.tmp_$(@F) $<
+
+cmd_modversions_S = \
+ if $(OBJDUMP) -h $(@D)/.tmp_$(@F) | grep -q __ksymtab; then \
+ $(call cmd_gensymtypes_S,$(KBUILD_SYMTYPES),$(@:.o=.symtypes)) \
+ > $(@D)/.tmp_$(@F:.o=.ver); \
+ \
+ $(LD) $(LDFLAGS) -r -o $@ $(@D)/.tmp_$(@F) \
+ -T $(@D)/.tmp_$(@F:.o=.ver); \
+ rm -f $(@D)/.tmp_$(@F) $(@D)/.tmp_$(@F:.o=.ver); \
+ else \
+ mv -f $(@D)/.tmp_$(@F) $@; \
+ fi;
+endif
+endif
$(obj)/%.o: $(src)/%.S $(objtool_obj) FORCE
$(call if_changed_rule,as_o_S)
@@ -430,6 +496,9 @@ cmd_export_list = $(OBJDUMP) -h $< | \
$(obj)/lib-ksyms.o: $(lib-target) FORCE
$(call if_changed,export_list)
+
+targets += $(obj)/lib-ksyms.o
+
endif
#
diff --git a/scripts/Makefile.extrawarn b/scripts/Makefile.extrawarn
index 53449a6ff6aa..7c321a603b07 100644
--- a/scripts/Makefile.extrawarn
+++ b/scripts/Makefile.extrawarn
@@ -36,6 +36,7 @@ warning-2 += -Wshadow
warning-2 += $(call cc-option, -Wlogical-op)
warning-2 += $(call cc-option, -Wmissing-field-initializers)
warning-2 += $(call cc-option, -Wsign-compare)
+warning-2 += $(call cc-option, -Wmaybe-uninitialized)
warning-3 := -Wbad-function-cast
warning-3 += -Wcast-qual
diff --git a/scripts/Makefile.ubsan b/scripts/Makefile.ubsan
index dd779c40c8e6..3b1b13818d59 100644
--- a/scripts/Makefile.ubsan
+++ b/scripts/Makefile.ubsan
@@ -17,4 +17,8 @@ endif
ifdef CONFIG_UBSAN_NULL
CFLAGS_UBSAN += $(call cc-option, -fsanitize=null)
endif
+
+ # -fsanitize=* options makes GCC less smart than usual and
+ # increase number of 'maybe-uninitialized false-positives
+ CFLAGS_UBSAN += $(call cc-option, -Wno-maybe-uninitialized)
endif
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index 19f5adfd877d..d9ff038c1b28 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -8,6 +8,9 @@
# of the GNU General Public License, incorporated herein by reference.
import sys, os, re
+from signal import signal, SIGPIPE, SIG_DFL
+
+signal(SIGPIPE, SIG_DFL)
if len(sys.argv) != 3:
sys.stderr.write("usage: %s file1 file2\n" % sys.argv[0])
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index a8368d1c4348..23f462f64a3f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6076,6 +6076,12 @@ sub process {
}
}
+# check for mutex_trylock_recursive usage
+ if ($line =~ /mutex_trylock_recursive/) {
+ ERROR("LOCKING",
+ "recursive locking is bad, do not use this ever.\n" . $herecurr);
+ }
+
# check for lockdep_set_novalidate_class
if ($line =~ /^.\s*lockdep_set_novalidate_class\s*\(/ ||
$line =~ /__lockdep_no_validate__\s*\)/ ) {
diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index c332684e1b5a..5206d99ddeb8 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -139,7 +139,8 @@ handle_line() {
while read line; do
# Let's see if we have an address in the line
- if [[ $line =~ \[\<([^]]+)\>\] ]]; then
+ if [[ $line =~ \[\<([^]]+)\>\] ]] ||
+ [[ $line =~ [^+\ ]+\+0x[0-9a-f]+/0x[0-9a-f]+ ]]; then
# Translate address to line numbers
handle_line "$line"
# Is it a code line?
diff --git a/scripts/faddr2line b/scripts/faddr2line
index 450b33257339..29df825d375c 100755
--- a/scripts/faddr2line
+++ b/scripts/faddr2line
@@ -105,9 +105,18 @@ __faddr2line() {
# In rare cases there might be duplicates.
while read symbol; do
local fields=($symbol)
- local sym_base=0x${fields[1]}
- local sym_size=${fields[2]}
- local sym_type=${fields[3]}
+ local sym_base=0x${fields[0]}
+ local sym_type=${fields[1]}
+ local sym_end=0x${fields[3]}
+
+ # calculate the size
+ local sym_size=$(($sym_end - $sym_base))
+ if [[ -z $sym_size ]] || [[ $sym_size -le 0 ]]; then
+ warn "bad symbol size: base: $sym_base end: $sym_end"
+ DONE=1
+ return
+ fi
+ sym_size=0x$(printf %x $sym_size)
# calculate the address
local addr=$(($sym_base + $offset))
@@ -116,26 +125,26 @@ __faddr2line() {
DONE=1
return
fi
- local hexaddr=0x$(printf %x $addr)
+ addr=0x$(printf %x $addr)
# weed out non-function symbols
- if [[ $sym_type != "FUNC" ]]; then
+ if [[ $sym_type != t ]] && [[ $sym_type != T ]]; then
[[ $print_warnings = 1 ]] &&
- echo "skipping $func address at $hexaddr due to non-function symbol"
+ echo "skipping $func address at $addr due to non-function symbol of type '$sym_type'"
continue
fi
# if the user provided a size, make sure it matches the symbol's size
if [[ -n $size ]] && [[ $size -ne $sym_size ]]; then
[[ $print_warnings = 1 ]] &&
- echo "skipping $func address at $hexaddr due to size mismatch ($size != $sym_size)"
+ echo "skipping $func address at $addr due to size mismatch ($size != $sym_size)"
continue;
fi
# make sure the provided offset is within the symbol's range
if [[ $offset -gt $sym_size ]]; then
[[ $print_warnings = 1 ]] &&
- echo "skipping $func address at $hexaddr due to size mismatch ($offset > $sym_size)"
+ echo "skipping $func address at $addr due to size mismatch ($offset > $sym_size)"
continue
fi
@@ -143,12 +152,12 @@ __faddr2line() {
[[ $FIRST = 0 ]] && echo
FIRST=0
- local hexsize=0x$(printf %x $sym_size)
- echo "$func+$offset/$hexsize:"
- addr2line -fpie $objfile $hexaddr | sed "s; $dir_prefix\(\./\)*; ;"
+ # pass real address to addr2line
+ echo "$func+$offset/$sym_size:"
+ addr2line -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;"
DONE=1
- done < <(readelf -sW $objfile | awk -v f=$func '$8 == f {print}')
+ done < <(nm -n $objfile | awk -v fn=$func '$3 == fn { found=1; line=$0; start=$1; next } found == 1 { found=0; print line, $1 }')
}
[[ $# -lt 2 ]] && usage
diff --git a/scripts/gcc-plugins/cyc_complexity_plugin.c b/scripts/gcc-plugins/cyc_complexity_plugin.c
index 34df974c6ba3..8af7db06122d 100644
--- a/scripts/gcc-plugins/cyc_complexity_plugin.c
+++ b/scripts/gcc-plugins/cyc_complexity_plugin.c
@@ -20,7 +20,7 @@
#include "gcc-common.h"
-int plugin_is_GPL_compatible;
+__visible int plugin_is_GPL_compatible;
static struct plugin_info cyc_complexity_plugin_info = {
.version = "20160225",
@@ -49,7 +49,7 @@ static unsigned int cyc_complexity_execute(void)
#include "gcc-generate-gimple-pass.h"
-int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
+__visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
{
const char * const plugin_name = plugin_info->base_name;
struct register_pass_info cyc_complexity_pass_info;
diff --git a/scripts/gcc-plugins/gcc-common.h b/scripts/gcc-plugins/gcc-common.h
index 172850bcd0d9..950fd2e64bb7 100644
--- a/scripts/gcc-plugins/gcc-common.h
+++ b/scripts/gcc-plugins/gcc-common.h
@@ -130,6 +130,7 @@ extern void dump_gimple_stmt(pretty_printer *, gimple, int, int);
#endif
#define __unused __attribute__((__unused__))
+#define __visible __attribute__((visibility("default")))
#define DECL_NAME_POINTER(node) IDENTIFIER_POINTER(DECL_NAME(node))
#define DECL_NAME_LENGTH(node) IDENTIFIER_LENGTH(DECL_NAME(node))
diff --git a/scripts/gcc-plugins/latent_entropy_plugin.c b/scripts/gcc-plugins/latent_entropy_plugin.c
index ff1939b804ae..8160f1c1b56e 100644
--- a/scripts/gcc-plugins/latent_entropy_plugin.c
+++ b/scripts/gcc-plugins/latent_entropy_plugin.c
@@ -77,7 +77,7 @@
#include "gcc-common.h"
-int plugin_is_GPL_compatible;
+__visible int plugin_is_GPL_compatible;
static GTY(()) tree latent_entropy_decl;
@@ -340,7 +340,7 @@ static enum tree_code get_op(tree *rhs)
break;
}
if (rhs)
- *rhs = build_int_cstu(unsigned_intDI_type_node, random_const);
+ *rhs = build_int_cstu(long_unsigned_type_node, random_const);
return op;
}
@@ -372,7 +372,7 @@ static void __perturb_latent_entropy(gimple_stmt_iterator *gsi,
enum tree_code op;
/* 1. create temporary copy of latent_entropy */
- temp = create_var(unsigned_intDI_type_node, "tmp_latent_entropy");
+ temp = create_var(long_unsigned_type_node, "temp_latent_entropy");
/* 2. read... */
add_referenced_var(latent_entropy_decl);
@@ -459,13 +459,13 @@ static void init_local_entropy(basic_block bb, tree local_entropy)
gsi_insert_before(&gsi, call, GSI_NEW_STMT);
update_stmt(call);
- udi_frame_addr = fold_convert(unsigned_intDI_type_node, frame_addr);
+ udi_frame_addr = fold_convert(long_unsigned_type_node, frame_addr);
assign = gimple_build_assign(local_entropy, udi_frame_addr);
gsi_insert_after(&gsi, assign, GSI_NEW_STMT);
update_stmt(assign);
/* 3. create temporary copy of latent_entropy */
- tmp = create_var(unsigned_intDI_type_node, "tmp_latent_entropy");
+ tmp = create_var(long_unsigned_type_node, "temp_latent_entropy");
/* 4. read the global entropy variable into local entropy */
add_referenced_var(latent_entropy_decl);
@@ -480,7 +480,7 @@ static void init_local_entropy(basic_block bb, tree local_entropy)
update_stmt(assign);
rand_cst = get_random_const();
- rand_const = build_int_cstu(unsigned_intDI_type_node, rand_cst);
+ rand_const = build_int_cstu(long_unsigned_type_node, rand_cst);
op = get_op(NULL);
assign = create_assign(op, local_entropy, local_entropy, rand_const);
gsi_insert_after(&gsi, assign, GSI_NEW_STMT);
@@ -529,7 +529,7 @@ static unsigned int latent_entropy_execute(void)
}
/* 1. create the local entropy variable */
- local_entropy = create_var(unsigned_intDI_type_node, "local_entropy");
+ local_entropy = create_var(long_unsigned_type_node, "local_entropy");
/* 2. initialize the local entropy variable */
init_local_entropy(bb, local_entropy);
@@ -561,10 +561,9 @@ static void latent_entropy_start_unit(void *gcc_data __unused,
if (in_lto_p)
return;
- /* extern volatile u64 latent_entropy */
- gcc_assert(TYPE_PRECISION(long_long_unsigned_type_node) == 64);
- quals = TYPE_QUALS(long_long_unsigned_type_node) | TYPE_QUAL_VOLATILE;
- type = build_qualified_type(long_long_unsigned_type_node, quals);
+ /* extern volatile unsigned long latent_entropy */
+ quals = TYPE_QUALS(long_unsigned_type_node) | TYPE_QUAL_VOLATILE;
+ type = build_qualified_type(long_unsigned_type_node, quals);
id = get_identifier("latent_entropy");
latent_entropy_decl = build_decl(UNKNOWN_LOCATION, VAR_DECL, id, type);
@@ -584,8 +583,8 @@ static void latent_entropy_start_unit(void *gcc_data __unused,
| TODO_update_ssa
#include "gcc-generate-gimple-pass.h"
-int plugin_init(struct plugin_name_args *plugin_info,
- struct plugin_gcc_version *version)
+__visible int plugin_init(struct plugin_name_args *plugin_info,
+ struct plugin_gcc_version *version)
{
bool enabled = true;
const char * const plugin_name = plugin_info->base_name;
diff --git a/scripts/gcc-plugins/sancov_plugin.c b/scripts/gcc-plugins/sancov_plugin.c
index aedd6113cb73..7ea0b3f50739 100644
--- a/scripts/gcc-plugins/sancov_plugin.c
+++ b/scripts/gcc-plugins/sancov_plugin.c
@@ -21,7 +21,7 @@
#include "gcc-common.h"
-int plugin_is_GPL_compatible;
+__visible int plugin_is_GPL_compatible;
tree sancov_fndecl;
@@ -86,7 +86,7 @@ static void sancov_start_unit(void __unused *gcc_data, void __unused *user_data)
#endif
}
-int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
+__visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version)
{
int i;
struct register_pass_info sancov_plugin_pass_info;
diff --git a/scripts/gcc-x86_64-has-stack-protector.sh b/scripts/gcc-x86_64-has-stack-protector.sh
index 973e8c141567..17867e723a51 100755
--- a/scripts/gcc-x86_64-has-stack-protector.sh
+++ b/scripts/gcc-x86_64-has-stack-protector.sh
@@ -1,6 +1,6 @@
#!/bin/sh
-echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
+echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fno-PIE -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
if [ "$?" -eq "0" ] ; then
echo y
else
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index ebced77deb9c..90a091b6ae4d 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -35,6 +35,8 @@ nconfig: $(obj)/nconf
silentoldconfig: $(obj)/conf
$(Q)mkdir -p include/config include/generated
+ $(Q)test -e include/generated/autoksyms.h || \
+ touch include/generated/autoksyms.h
$< $(silent) --$@ $(Kconfig)
localyesconfig localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-12 15:43:36 +0300