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
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.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
gen-insn-attr-x86.awk	x86/insn: Make inat-tables.c suitable for pre-decompression code	2020-09-07 19:45:24 +02:00
insn_decoder_test.c	x86/tools/insn_decoder_test: Convert to insn_decode()	2021-03-15 12:09:09 +01:00
insn_sanity.c	x86/tools/insn_sanity: Convert to insn_decode()	2021-03-15 12:21:11 +01:00
Makefile	x86/tools: Remove chkobjdump.awk	2023-11-30 09:38:12 +01:00
objdump_reformat.awk	x86/tools: objdump_reformat.awk: Skip bad instructions from llvm-objdump	2024-01-04 10:04:02 +01:00
relocs_32.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
relocs_64.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
relocs_common.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
relocs.c	x86, relocs: Ignore relocations in .notes section	2024-02-29 22:34:42 -08:00
relocs.h	x86/tools/relocs: Mark die() with the printf function attr format	2021-08-23 05:58:02 +02:00