Commit 26d2d13d authored Jul 21, 2022 by Josh Poimboeuf Committed by Greg Kroah-Hartman Aug 25, 2022

scripts/faddr2line: Fix vmlinux detection on arm64



[ Upstream commit b6a5068854cfe372da7dee3224dcf023ed5b00cb ]

Since commit dcea997beed6 ("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: dcea997beed6 ("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>

parent 563ffb78

scripts/faddr2line

+3 −1

Original line number	Diff line number	Diff line
		@@ -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