| 1 | #!/bin/sh |
| 2 | # SPDX-License-Identifier: GPL-2.0-or-later |
| 3 | |
| 4 | # Get a list of all the relocations, remove from it the relocations |
| 5 | # that are known to be legitimate and return this list to arch specific |
| 6 | # script that will look for suspicious relocations. |
| 7 | |
| 8 | objdump="$1" |
| 9 | nm="$2" |
| 10 | vmlinux="$3" |
| 11 | |
| 12 | # Remove from the possible bad relocations those that match an undefined |
| 13 | # weak symbol which will result in an absolute relocation to 0. |
| 14 | # Weak unresolved symbols are of that form in nm output: |
| 15 | # " w _binary__btf_vmlinux_bin_end" |
| 16 | undef_weak_symbols=$($nm "$vmlinux" | awk '$1 ~ /w/ { print $2 }') |
| 17 | |
| 18 | $objdump -R "$vmlinux" | |
| 19 | grep -E '\<R_' | |
| 20 | ([ "$undef_weak_symbols" ] && grep -F -w -v "$undef_weak_symbols" || cat) |