linux_dsm_epyc7002/arch/powerpc
Christophe Leroy 0bdcaebb12 powerpc/32: Fix boot failure with CONFIG_STACKPROTECTOR
commit f5668260b872e89b8d3942a8b7d4278aa9c2c981 upstream.

Commit 7c95d8893f ("powerpc: Change calling convention for
create_branch() et. al.") complexified the frame of function
do_feature_fixups(), leading to GCC setting up a stack
guard when CONFIG_STACKPROTECTOR is selected.

The problem is that do_feature_fixups() is called very early
while 'current' in r2 is not set up yet and the code is still
not at the final address used at link time.

So, like other instrumentation, stack protection needs to be
deactivated for feature-fixups.c and code-patching.c

Fixes: 7c95d8893f ("powerpc: Change calling convention for create_branch() et. al.")
Cc: stable@vger.kernel.org # v5.8+
Reported-by: Jonathan Neuschaefer <j.neuschaefer@gmx.net>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Tested-by: Jonathan Neuschaefer <j.neuschaefer@gmx.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b688fe82927b330349d9e44553363fa451ea4d95.1619715114.git.christophe.leroy@csgroup.eu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-11 14:47:35 +02:00
..
boot powerpc/boot: Fix build of dts/fsl 2020-12-30 11:54:01 +01:00
configs powerpc updates for 5.10 2020-10-16 12:21:15 -07:00
crypto
include powerpc/powernv: Enable HAIL (HV AIL) for ISA v3.1 processors 2021-05-11 14:47:35 +02:00
kernel powerpc/eeh: Fix EEH handling for hugepages in ioremap space. 2021-05-11 14:47:35 +02:00
kexec powerpc/kexec_file: Use current CPU info while setting up FDT 2021-05-11 14:47:35 +02:00
kvm KVM: PPC: Make the VMX instruction emulation routines static 2021-03-04 11:38:01 +01:00
lib powerpc/32: Fix boot failure with CONFIG_STACKPROTECTOR 2021-05-11 14:47:35 +02:00
math-emu
mm powerpc/mm: Fix verification of MMU_FTR_TYPE_44x 2020-12-30 11:54:16 +01:00
net
oprofile
perf powerpc/perf: Record counter overflow always if SAMPLE_IP is unset 2021-03-17 17:06:23 +01:00
platforms powerpc/pseries: Don't enforce MSI affinity with kdump 2021-03-17 17:06:10 +01:00
purgatory
sysdev powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() 2021-01-06 14:56:53 +01:00
tools
xmon powerpc/xmon: Change printk() to pr_cont() 2020-12-30 11:54:16 +01:00
Kbuild
Kconfig powerpc/47x: Disable 256k page size 2021-03-04 11:38:01 +01:00
Kconfig.debug
Makefile Kbuild fixes for v5.10 (2nd) 2020-12-06 10:31:39 -08:00
Makefile.postlink