Alice Ryhl 93e34a0b5c rust: KASAN+RETHUNK requires rustc 1.83.0 ... When enabling both KASAN and RETHUNK, objtool emits the following warnings: rust/core.o: warning: objtool: asan.module_ctor+0x13: 'naked' return found in MITIGATION_RETHUNK build rust/core.o: warning: objtool: asan.module_dtor+0x13: 'naked' return found in MITIGATION_RETHUNK build This is caused by the -Zfunction-return=thunk-extern flag in rustc not informing LLVM about the mitigation at the module level (it does so at the function level only currently, which covers most cases, but both are required), which means that the KASAN functions asan.module_ctor and asan.module_dtor are generated without the rethunk mitigation. The other mitigations that we enabled for Rust (SLS, RETPOLINE) do not have the same bug, as they're being applied through the target-feature functionality instead. This is being fixed for rustc 1.83.0, so update Kconfig to reject this configuration on older compilers. Link: https://github.com/rust-lang/rust/pull/130824 Fixes: d7868550d5 ("x86/rust: support MITIGATION_RETHUNK") Reported-by: Miguel Ojeda <ojeda@kernel.org> Closes: https://lore.kernel.org/all/CANiq72myZL4_poCMuNFevtpYYc0V0embjSuKb7y=C+m3vVA_8g@mail.gmail.com/ Signed-off-by: Alice Ryhl <aliceryhl@google.com> Link: https://lore.kernel.org/r/20240926093849.1192264-1-aliceryhl@google.com [ Reworded to add the details mentioned in the list. - Miguel ] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>		2024-09-26 21:27:27 +02:00
..
.gitignore	kbuild: build init/built-in.a just once	2022-09-29 04:40:15 +09:00
calibrate.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
do_mounts_initrd.c	initrd: remove the now superfluous sentinel element from ctl_table array	2024-04-25 21:07:05 -07:00
do_mounts_rd.c	init: add an init_unlink helper	2020-07-31 08:17:52 +02:00
do_mounts.c	init: replace deprecated strncpy with strscpy_pad	2024-04-30 10:34:29 -07:00
do_mounts.h	init: flush async file closing	2024-02-08 18:41:03 +01:00
init_task.c	sched_ext: Initial pull request for v6.12	2024-09-21 09:44:57 -07:00
initramfs.c	initramfs,lsm: add a security hook to do_populate_rootfs()	2024-08-20 14:01:41 -04:00
Kconfig	rust: KASAN+RETHUNK requires rustc 1.83.0	2024-09-26 21:27:27 +02:00
main.c	init/main.c: Initialize early LSMs after arch code, static keys and calls.	2024-08-20 14:05:33 -04:00
Makefile	kbuild: move init/build-version to scripts/	2024-07-16 01:08:37 +09:00
noinitramfs.c	init: move usermodehelper_enable() to populate_rootfs()	2021-09-08 11:50:27 -07:00
version-timestamp.c	init/version-timestamp.c: remove unneeded #include <linux/version.h>	2023-01-09 07:34:38 +09:00
version.c	init/version.c: Replace strlcpy with strscpy	2023-09-22 09:50:56 -07:00