linux/security
Kees Cook eaafc59005 fortify: Explicitly disable Clang support
commit a52f8a59ae upstream.

Clang has never correctly compiled the FORTIFY_SOURCE defenses due to
a couple bugs:

	Eliding inlines with matching __builtin_* names
	https://bugs.llvm.org/show_bug.cgi?id=50322

	Incorrect __builtin_constant_p() of some globals
	https://bugs.llvm.org/show_bug.cgi?id=41459

In the process of making improvements to the FORTIFY_SOURCE defenses, the
first (silent) bug (coincidentally) becomes worked around, but exposes
the latter which breaks the build. As such, Clang must not be used with
CONFIG_FORTIFY_SOURCE until at least latter bug is fixed (in Clang 13),
and the fortify routines have been rearranged.

Update the Kconfig to reflect the reality of the current situation.

Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/lkml/CAKwvOd=A+ueGV2ihdy5GtgR2fQbcXjjAtVxv3=cPjffpebZB7A@mail.gmail.com
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-11-21 13:46:35 +01:00
..
apparmor apparmor: fix error check 2021-11-18 14:04:22 +01:00
bpf
integrity evm: mark evm_fixmode as __ro_after_init 2021-11-18 14:03:46 +01:00
keys
loadpin
lockdown
safesetid
selinux selinux: fix race condition when computing ocontext SIDs 2021-11-18 14:03:44 +01:00
smack smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi 2021-11-18 14:04:10 +01:00
tomoyo
yama
commoncap.c
device_cgroup.c
inode.c
Kconfig fortify: Explicitly disable Clang support 2021-11-21 13:46:35 +01:00
Kconfig.hardening
lsm_audit.c
Makefile
min_addr.c
security.c binder: use cred instead of task for selinux checks 2021-11-18 14:03:36 +01:00