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scripts/faddr2line: Fix vmlinux detection on arm64 

[ Upstream commit b6a5068854 ]

Since commit dcea997bee ("faddr2line: Fix overlapping text section
failures, the sequel"), faddr2line is completely broken on arm64.

For some reason, on arm64, the vmlinux ELF object file type is ET_DYN
rather than ET_EXEC.  Check for both when determining whether the object
is vmlinux.

Modules and vmlinux.o have type ET_REL on all arches.

Fixes: dcea997bee ("faddr2line: Fix overlapping text section failures, the sequel")
Reported-by: John Garry <john.garry@huawei.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: John Garry <john.garry@huawei.com>
Link: https://lore.kernel.org/r/dad1999737471b06d6188ce4cdb11329aa41682c.1658426357.git.jpoimboe@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Josh Poimboeuf 2022-07-21 11:01:23 -07:00 committed by Greg Kroah-Hartman
parent 2e61e8a96f
commit 4cf123812e
1 changed files with 3 additions and 1 deletions
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4
scripts/faddr2line
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@ -112,7 +112,9 @@ __faddr2line() {
# section offsets.
local file_type=$(${READELF} --file-header $objfile |
${AWK} '$1 == "Type:" { print $2; exit }')
[[ $file_type = "EXEC" ]] && is_vmlinux=1
if [[ $file_type = "EXEC" ]] || [[ $file_type == "DYN" ]]; then
is_vmlinux=1
fi
# 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