Kees Cook aaa8736370 x86, relocs: Ignore relocations in .notes section ... When building with CONFIG_XEN_PV=y, .text symbols are emitted into the .notes section so that Xen can find the "startup_xen" entry point. This information is used prior to booting the kernel, so relocations are not useful. In fact, performing relocations against the .notes section means that the KASLR base is exposed since /sys/kernel/notes is world-readable. To avoid leaking the KASLR base without breaking unprivileged tools that are expecting to read /sys/kernel/notes, skip performing relocations in the .notes section. The values readable in .notes are then identical to those found in System.map. Reported-by: Guixiong Wei <guixiongwei@gmail.com> Closes: https://lore.kernel.org/all/20240218073501.54555-1-guixiongwei@gmail.com/ Fixes: 5ead97c84f ("xen: Core Xen implementation") Fixes: da1a679cde ("Add /sys/kernel/notes") Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Kees Cook <keescook@chromium.org>		2024-02-29 22:34:42 -08:00
..
.gitignore
gen-insn-attr-x86.awk
insn_decoder_test.c
insn_sanity.c
Makefile
objdump_reformat.awk
relocs.c	x86, relocs: Ignore relocations in .notes section	2024-02-29 22:34:42 -08:00
relocs.h
relocs_32.c
relocs_64.c
relocs_common.c