#!/bin/bash # SPDX-License-Identifier: GPL-2.0 # # Translate stack dump function offsets. # # addr2line doesn't work with KASLR addresses. This works similarly to # addr2line, but instead takes the 'func+0x123' format as input: # # $ ./scripts/faddr2line ~/k/vmlinux meminfo_proc_show+0x5/0x568 # meminfo_proc_show+0x5/0x568: # meminfo_proc_show at fs/proc/meminfo.c:27 # # If the address is part of an inlined function, the full inline call chain is # printed: # # $ ./scripts/faddr2line ~/k/vmlinux native_write_msr+0x6/0x27 # native_write_msr+0x6/0x27: # arch_static_branch at arch/x86/include/asm/msr.h:121 # (inlined by) static_key_false at include/linux/jump_label.h:125 # (inlined by) native_write_msr at arch/x86/include/asm/msr.h:125 # # The function size after the '/' in the input is optional, but recommended. # It's used to help disambiguate any duplicate symbol names, which can occur # rarely. If the size is omitted for a duplicate symbol then it's possible for # multiple code sites to be printed: # # $ ./scripts/faddr2line ~/k/vmlinux raw_ioctl+0x5 # raw_ioctl+0x5/0x20: # raw_ioctl at drivers/char/raw.c:122 # # raw_ioctl+0x5/0xb1: # raw_ioctl at net/ipv4/raw.c:876 # # Multiple addresses can be specified on a single command line: # # $ ./scripts/faddr2line ~/k/vmlinux type_show+0x10/45 free_reserved_area+0x90 # type_show+0x10/0x2d: # type_show at drivers/video/backlight/backlight.c:213 # # free_reserved_area+0x90/0x123: # free_reserved_area at mm/page_alloc.c:6429 (discriminator 2) set -o errexit set -o nounset READELF="${CROSS_COMPILE:-}readelf" ADDR2LINE="${CROSS_COMPILE:-}addr2line" SIZE="${CROSS_COMPILE:-}size" NM="${CROSS_COMPILE:-}nm" command -v awk >/dev/null 2>&1 || die "awk isn't installed" command -v ${READELF} >/dev/null 2>&1 || die "readelf isn't installed" command -v ${ADDR2LINE} >/dev/null 2>&1 || die "addr2line isn't installed" command -v ${SIZE} >/dev/null 2>&1 || die "size isn't installed" command -v ${NM} >/dev/null 2>&1 || die "nm isn't installed" usage() { echo "usage: faddr2line <object file> <func+offset> <func+offset>..." >&2 exit 1 } warn() { echo "$1" >&2 } die() { echo "ERROR: $1" >&2 exit 1 } # Try to figure out the source directory prefix so we can remove it from the # addr2line output. HACK ALERT: This assumes that start_kernel() is in # kernel/init.c! This only works for vmlinux. Otherwise it falls back to # printing the absolute path. find_dir_prefix() { local objfile=$1 local start_kernel_addr=$(${READELF} -sW $objfile | awk '$8 == "start_kernel" {printf "0x%s", $2}') [[ -z $start_kernel_addr ]] && return local file_line=$(${ADDR2LINE} -e $objfile $start_kernel_addr) [[ -z $file_line ]] && return local prefix=${file_line%init/main.c:*} if [[ -z $prefix ]] || [[ $prefix = $file_line ]]; then return fi DIR_PREFIX=$prefix return 0 } __faddr2line() { local objfile=$1 local func_addr=$2 local dir_prefix=$3 local print_warnings=$4 local func=${func_addr%+*} local offset=${func_addr#*+} offset=${offset%/*} local size= [[ $func_addr =~ "/" ]] && size=${func_addr#*/} if [[ -z $func ]] || [[ -z $offset ]] || [[ $func = $func_addr ]]; then warn "bad func+offset $func_addr" DONE=1 return fi # Go through each of the object's symbols which match the func name. # In rare cases there might be duplicates. file_end=$(${SIZE} -Ax $objfile | awk '$1 == ".text" {print $2}') while read symbol; do local fields=($symbol) local sym_base=0x${fields[0]} local sym_type=${fields[1]} local sym_end=${fields[3]} # calculate the size local sym_size=$(($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)) if [[ -z $addr ]] || [[ $addr = 0 ]]; then warn "bad address: $sym_base + $offset" DONE=1 return fi addr=0x$(printf %x $addr) # weed out non-function symbols if [[ $sym_type != t ]] && [[ $sym_type != T ]]; then [[ $print_warnings = 1 ]] && 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 $addr due to size mismatch ($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 $addr due to size mismatch ($offset > $sym_size)" continue fi # separate multiple entries with a blank line [[ $FIRST = 0 ]] && echo FIRST=0 # pass real address to addr2line echo "$func+$offset/$sym_size:" ${ADDR2LINE} -fpie $objfile $addr | sed "s; $dir_prefix\(\./\)*; ;" DONE=1 done < <(${NM} -n $objfile | awk -v fn=$func -v end=$file_end '$3 == fn { found=1; line=$0; start=$1; next } found == 1 { found=0; print line, "0x"$1 } END {if (found == 1) print line, end; }') } [[ $# -lt 2 ]] && usage objfile=$1 [[ ! -f $objfile ]] && die "can't find objfile $objfile" shift DIR_PREFIX=supercalifragilisticexpialidocious find_dir_prefix $objfile FIRST=1 while [[ $# -gt 0 ]]; do func_addr=$1 shift # print any matches found DONE=0 __faddr2line $objfile $func_addr $DIR_PREFIX 0 # if no match was found, print warnings if [[ $DONE = 0 ]]; then __faddr2line $objfile $func_addr $DIR_PREFIX 1 warn "no match for $func_addr" fi done
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basic | Folder | 0755 |
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coccinelle | Folder | 0755 |
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dtc | Folder | 0755 |
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gcc-plugins | Folder | 0755 |
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gdb | Folder | 0755 |
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genksyms | Folder | 0755 |
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kconfig | Folder | 0755 |
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ksymoops | Folder | 0755 |
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mod | Folder | 0755 |
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package | Folder | 0755 |
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selinux | Folder | 0755 |
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tracing | Folder | 0755 |
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.gitignore | File | 162 B | 0644 |
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Kbuild.include | File | 18.36 KB | 0644 |
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Lindent | File | 502 B | 0755 |
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Makefile | File | 1.9 KB | 0644 |
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Makefile.asm-generic | File | 1.17 KB | 0644 |
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Makefile.build | File | 20.68 KB | 0644 |
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Makefile.clean | File | 2.96 KB | 0644 |
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Makefile.dtbinst | File | 1.09 KB | 0644 |
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Makefile.extrawarn | File | 2.83 KB | 0644 |
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Makefile.gcc-plugins | File | 3.75 KB | 0644 |
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Makefile.headersinst | File | 3.98 KB | 0644 |
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Makefile.host | File | 6.23 KB | 0644 |
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Makefile.kasan | File | 1.09 KB | 0644 |
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Makefile.kcov | File | 201 B | 0644 |
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Makefile.lib | File | 15.25 KB | 0644 |
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Makefile.modbuiltin | File | 1.82 KB | 0644 |
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Makefile.modinst | File | 1.52 KB | 0644 |
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Makefile.modpost | File | 5.48 KB | 0644 |
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Makefile.modsign | File | 1.02 KB | 0644 |
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Makefile.ubsan | File | 1.07 KB | 0644 |
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adjust_autoksyms.sh | File | 3.09 KB | 0755 |
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asn1_compiler.c | File | 35.54 KB | 0644 |
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bloat-o-meter | File | 3.22 KB | 0755 |
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bootgraph.pl | File | 6.28 KB | 0755 |
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check_00index.sh | File | 1.3 KB | 0755 |
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check_extable.sh | File | 4.93 KB | 0755 |
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checkincludes.pl | File | 1.94 KB | 0755 |
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checkkconfigsymbols.py | File | 15.51 KB | 0755 |
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checkpatch.pl | File | 186.79 KB | 0755 |
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checkstack.pl | File | 5.49 KB | 0755 |
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checksyscalls.sh | File | 5.68 KB | 0755 |
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checkversion.pl | File | 1.9 KB | 0755 |
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cleanfile | File | 3.46 KB | 0755 |
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cleanpatch | File | 5.06 KB | 0755 |
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coccicheck | File | 7.24 KB | 0755 |
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config | File | 4.64 KB | 0755 |
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conmakehash.c | File | 5.98 KB | 0644 |
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const_structs.checkpatch | File | 964 B | 0644 |
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decode_stacktrace.sh | File | 3.82 KB | 0755 |
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decodecode | File | 2.3 KB | 0755 |
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depmod.sh | File | 1.94 KB | 0755 |
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diffconfig | File | 3.72 KB | 0755 |
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documentation-file-ref-check | File | 395 B | 0755 |
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export_report.pl | File | 4.55 KB | 0755 |
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extract-cert.c | File | 3.46 KB | 0644 |
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extract-ikconfig | File | 1.69 KB | 0755 |
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extract-module-sig.pl | File | 3.66 KB | 0755 |
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extract-sys-certs.pl | File | 3.75 KB | 0755 |
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extract-vmlinux | File | 1.6 KB | 0755 |
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extract_xc3028.pl | File | 44.6 KB | 0755 |
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faddr2line | File | 5.53 KB | 0755 |
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find-unused-docs.sh | File | 1.27 KB | 0755 |
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gcc-goto.sh | File | 530 B | 0755 |
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gcc-ld | File | 711 B | 0755 |
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gcc-plugin.sh | File | 1.06 KB | 0755 |
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gcc-version.sh | File | 857 B | 0755 |
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gcc-x86_32-has-stack-protector.sh | File | 219 B | 0755 |
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gcc-x86_64-has-stack-protector.sh | File | 244 B | 0755 |
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gen_initramfs_list.sh | File | 8.03 KB | 0755 |
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get_dvb_firmware | File | 25.22 KB | 0755 |
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get_maintainer.pl | File | 65.03 KB | 0755 |
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gfp-translate | File | 1.71 KB | 0755 |
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headerdep.pl | File | 3.5 KB | 0755 |
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headers.sh | File | 512 B | 0755 |
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headers_check.pl | File | 3.73 KB | 0755 |
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headers_install.sh | File | 1.32 KB | 0755 |
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insert-sys-cert.c | File | 13.08 KB | 0644 |
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kallsyms.c | File | 18.89 KB | 0644 |
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kernel-doc | File | 92.36 KB | 0755 |
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kmsg-doc | File | 12.13 KB | 0755 |
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ld-version.sh | File | 269 B | 0755 |
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leaking_addresses.pl | File | 9.65 KB | 0755 |
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link-vmlinux.sh | File | 7.65 KB | 0755 |
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makelst | File | 808 B | 0755 |
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markup_oops.pl | File | 8.08 KB | 0755 |
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mkcompile_h | File | 2.74 KB | 0755 |
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mkmakefile | File | 1.19 KB | 0755 |
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mksysmap | File | 1.33 KB | 0755 |
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mkuboot.sh | File | 414 B | 0755 |
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module-common.lds | File | 901 B | 0644 |
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namespace.pl | File | 13.18 KB | 0755 |
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objdiff | File | 2.85 KB | 0755 |
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parse-maintainers.pl | File | 3.72 KB | 0755 |
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patch-kernel | File | 9.95 KB | 0755 |
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pnmtologo.c | File | 11.91 KB | 0644 |
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profile2linkerlist.pl | File | 414 B | 0755 |
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prune-kernel | File | 708 B | 0755 |
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recordmcount.c | File | 17.49 KB | 0644 |
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recordmcount.h | File | 16.4 KB | 0644 |
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recordmcount.pl | File | 18.41 KB | 0755 |
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setlocalversion | File | 4.72 KB | 0755 |
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show_delta | File | 2.99 KB | 0755 |
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sign-file.c | File | 9.76 KB | 0644 |
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sortextable.c | File | 8.35 KB | 0644 |
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sortextable.h | File | 5.48 KB | 0644 |
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spelling.txt | File | 24.97 KB | 0644 |
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sphinx-pre-install | File | 14.04 KB | 0755 |
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stackdelta | File | 1.84 KB | 0755 |
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stackusage | File | 794 B | 0755 |
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subarch.include | File | 641 B | 0644 |
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tags.sh | File | 9.49 KB | 0755 |
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ubuntu-retpoline-extract-one | File | 7.26 KB | 0644 |
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unifdef.c | File | 34.8 KB | 0644 |
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ver_linux | File | 2.94 KB | 0755 |
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xen-hypercalls.sh | File | 386 B | 0644 |
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xz_wrap.sh | File | 562 B | 0755 |
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