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- Handle different output of readelf on different distros running

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ppc64le which confuses faddr2line's function offsets conversion
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Merge tag 'objtool_urgent_for_v6.1_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fix from Borislav Petkov:

 - Handle different output of readelf on different distros running
   ppc64le which confuses faddr2line's function offsets conversion

* tag 'objtool_urgent_for_v6.1_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  scripts/faddr2line: Fix regression in name resolution on ppc64le
This commit is contained in:
Linus Torvalds 2022-11-27 12:08:17 -08:00
commit b465cf1773
1 changed files with 4 additions and 3 deletions
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7
scripts/faddr2line
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@ -74,7 +74,8 @@ command -v ${ADDR2LINE} >/dev/null 2>&1 || die "${ADDR2LINE} isn't installed"
find_dir_prefix() {
local objfile=$1
local start_kernel_addr=$(${READELF} --symbols --wide $objfile | ${AWK} '$8 == "start_kernel" {printf "0x%s", $2}')
local start_kernel_addr=$(${READELF} --symbols --wide $objfile | sed 's/\[.*\]//' |
${AWK} '$8 == "start_kernel" {printf "0x%s", $2}')
[[ -z $start_kernel_addr ]] && return
local file_line=$(${ADDR2LINE} -e $objfile $start_kernel_addr)
@ -178,7 +179,7 @@ __faddr2line() {
found=2
break
fi
done < <(${READELF} --symbols --wide $objfile | ${AWK} -v sec=$sym_sec '$7 == sec' | sort --key=2)
done < <(${READELF} --symbols --wide $objfile | sed 's/\[.*\]//' | ${AWK} -v sec=$sym_sec '$7 == sec' | sort --key=2)
if [[ $found = 0 ]]; then
warn "can't find symbol: sym_name: $sym_name sym_sec: $sym_sec sym_addr: $sym_addr sym_elf_size: $sym_elf_size"
@ -259,7 +260,7 @@ __faddr2line() {
DONE=1
done < <(${READELF} --symbols --wide $objfile | ${AWK} -v fn=$sym_name '$4 == "FUNC" && $8 == fn')
done < <(${READELF} --symbols --wide $objfile | sed 's/\[.*\]//' | ${AWK} -v fn=$sym_name '$4 == "FUNC" && $8 == fn')
}
[[ $# -lt 2 ]] && usage