---

yaml
---
r: 26405
b: refs/heads/master
c: 275e6e1
h: refs/heads/master
i:
  26403: 2408820
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cb8aa3d29b562e4c16fdfa4ecc8170ddc55397f4
+refs/heads/master: 275e6e1ee2bafde77e9390b27e876fa83f24cb60

trunk/arch/um/Makefile

@@ -118,6 +118,10 @@ prepare: $(ARCH_DIR)/include/kern_constants.h
 LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib
 
+CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
+	$(call cc-option, -fno-stack-protector,) \
+	$(call cc-option, -fno-stack-protector-all,)
+
 CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT
 CONFIG_KERNEL_STACK_ORDER ?= 2
 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
@@ -227,4 +231,4 @@ $(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include
 	@echo '  SYMLINK $@'
 	$(Q)ln -sf ../../../include/asm-um/asm-offsets.h $@
 
-export SUBARCH USER_CFLAGS OS
+export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS

trunk/arch/um/kernel/skas/Makefile

@@ -11,4 +11,11 @@ USER_OBJS := clone.o
 include arch/um/scripts/Makefile.rules
 
 # clone.o is in the stub, so it can't be built with profiling
-$(obj)/clone.o : c_flags = -Wp,-MD,$(depfile) $(call unprofile,$(USER_CFLAGS))
+# GCC hardened also auto-enables -fpic, but we need %ebx so it can't work ->
+# disable it
+
+CFLAGS_clone.o := $(CFLAGS_NO_HARDENING)
+
+# since we're setting c_flags we _must_ add $(CFLAGS_$(*F).o).
+
+$(obj)/clone.o : c_flags = -Wp,-MD,$(depfile) $(call unprofile,$(USER_CFLAGS)) $(CFLAGS_$(*F).o)

trunk/arch/um/sys-i386/Makefile

@@ -13,6 +13,8 @@ USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o stub_segv.o
 USER_OBJS += user-offsets.s
 extra-y += user-offsets.s
 
+CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
+
 extra-$(CONFIG_MODE_TT) += unmap.o
 
 include arch/um/scripts/Makefile.rules

trunk/arch/um/sys-x86_64/Makefile

@@ -21,6 +21,8 @@ USER_OBJS := ptrace_user.o sigcontext.o stub_segv.o
 USER_OBJS += user-offsets.s
 extra-y += user-offsets.s
 
+CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING)
+
 extra-$(CONFIG_MODE_TT) += unmap.o
 
 include arch/um/scripts/Makefile.rules