Merge branch 'master' into mm-nonmm-stable

3 files changed, 38 insertions, 12 deletions

diff --git a/scripts/faddr2line b/scripts/faddr2line
index 0e6268d59883..94ed98dd899f 100755
--- a/scripts/faddr2line
+++ b/scripts/faddr2line
@@ -95,17 +95,25 @@ __faddr2line() {
 	local print_warnings=$4
 
 	local sym_name=${func_addr%+*}
-	local offset=${func_addr#*+}
-	offset=${offset%/*}
+	local func_offset=${func_addr#*+}
+	func_offset=${func_offset%/*}
 	local user_size=
+	local file_type
+	local is_vmlinux=0
 	[[ $func_addr =~ "/" ]] && user_size=${func_addr#*/}
 
-	if [[ -z $sym_name ]] || [[ -z $offset ]] || [[ $sym_name = $func_addr ]]; then
+	if [[ -z $sym_name ]] || [[ -z $func_offset ]] || [[ $sym_name = $func_addr ]]; then
 		warn "bad func+offset $func_addr"
 		DONE=1
 		return
 	fi
 
+	# vmlinux uses absolute addresses in the section table rather than
+	# section offsets.
+	local file_type=$(${READELF} --file-header $objfile |
+		${AWK} '$1 == "Type:" { print $2; exit }')
+	[[ $file_type = "EXEC" ]] && is_vmlinux=1
+
 	# Go through each of the object's symbols which match the func name.
 	# In rare cases there might be duplicates, in which case we print all
 	# matches.
@@ -114,9 +122,11 @@ __faddr2line() {
 		local sym_addr=0x${fields[1]}
 		local sym_elf_size=${fields[2]}
 		local sym_sec=${fields[6]}
+		local sec_size
+		local sec_name
 
 		# Get the section size:
-		local sec_size=$(${READELF} --section-headers --wide $objfile |
+		sec_size=$(${READELF} --section-headers --wide $objfile |
 			sed 's/\[ /\[/' |
 			${AWK} -v sec=$sym_sec '$1 == "[" sec "]" { print "0x" $6; exit }')
 
@@ -126,6 +136,17 @@ __faddr2line() {
 			return
 		fi
 
+		# Get the section name:
+		sec_name=$(${READELF} --section-headers --wide $objfile |
+			sed 's/\[ /\[/' |
+			${AWK} -v sec=$sym_sec '$1 == "[" sec "]" { print $2; exit }')
+
+		if [[ -z $sec_name ]]; then
+			warn "bad section name: section: $sym_sec"
+			DONE=1
+			return
+		fi
+
 		# Calculate the symbol size.
 		#
 		# Unfortunately we can't use the ELF size, because kallsyms
@@ -174,10 +195,10 @@ __faddr2line() {
 
 		sym_size=0x$(printf %x $sym_size)
 
-		# Calculate the section address from user-supplied offset:
-		local addr=$(($sym_addr + $offset))
+		# Calculate the address from user-supplied offset:
+		local addr=$(($sym_addr + $func_offset))
 		if [[ -z $addr ]] || [[ $addr = 0 ]]; then
-			warn "bad address: $sym_addr + $offset"
+			warn "bad address: $sym_addr + $func_offset"
 			DONE=1
 			return
 		fi
@@ -191,9 +212,9 @@ __faddr2line() {
 		fi
 
 		# Make sure the provided offset is within the symbol's range:
-		if [[ $offset -gt $sym_size ]]; then
+		if [[ $func_offset -gt $sym_size ]]; then
 			[[ $print_warnings = 1 ]] &&
-				echo "skipping $sym_name address at $addr due to size mismatch ($offset > $sym_size)"
+				echo "skipping $sym_name address at $addr due to size mismatch ($func_offset > $sym_size)"
 			continue
 		fi
 
@@ -202,11 +223,13 @@ __faddr2line() {
 		[[ $FIRST = 0 ]] && echo
 		FIRST=0
 
-		echo "$sym_name+$offset/$sym_size:"
+		echo "$sym_name+$func_offset/$sym_size:"
 
 		# Pass section address to addr2line and strip absolute paths
 		# from the output:
-		local output=$(${ADDR2LINE} -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;")
+		local args="--functions --pretty-print --inlines --exe=$objfile"
+		[[ $is_vmlinux = 0 ]] && args="$args --section=$sec_name"
+		local output=$(${ADDR2LINE} $args $addr | sed "s; $dir_prefix\(\./\)*; ;")
 		[[ -z $output ]] && continue
 
 		# Default output (non --list):
diff --git a/scripts/gen_autoksyms.sh b/scripts/gen_autoksyms.sh
index faacf7062122..653fadbad302 100755
--- a/scripts/gen_autoksyms.sh
+++ b/scripts/gen_autoksyms.sh
@@ -56,4 +56,7 @@ EOT
 # point addresses.
 sed -e 's/^\.//' |
 sort -u |
+# Ignore __this_module. It's not an exported symbol, and will be resolved
+# when the final .ko's are linked.
+grep -v '^__this_module$' |
 sed -e 's/\(.*\)/#define __KSYM_\1 1/' >> "$output_file"
diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index 29d5a841e215..620dc8c4c814 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -980,7 +980,7 @@ static const struct sectioncheck sectioncheck[] = {
 },
 /* Do not export init/exit functions or data */
 {
-	.fromsec = { "__ksymtab*", NULL },
+	.fromsec = { "___ksymtab*", NULL },
 	.bad_tosec = { INIT_SECTIONS, EXIT_SECTIONS, NULL },
 	.mismatch = EXPORT_TO_INIT_EXIT,
 	.symbol_white_list = { DEFAULT_SYMBOL_WHITE_LIST, NULL },