lkml.org 
[lkml]   [2018]   [Mar]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.9 64/67] selftests: x86: sysret_ss_attrs doesnt build on a PIE build
Date
4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Shuah Khan <shuahkh@osg.samsung.com>

commit 3346a6a4e5ba8c040360f753b26938cec31a4bdc upstream.

sysret_ss_attrs fails to compile leading x86 test run to fail on systems
configured to build using PIE by default. Add -no-pie fix it.

Relocation might still fail if relocated above 4G. For now this change
fixes the build and runs x86 tests.

tools/testing/selftests/x86$ make
gcc -m64 -o .../tools/testing/selftests/x86/single_step_syscall_64 -O2
-g -std=gnu99 -pthread -Wall single_step_syscall.c -lrt -ldl
gcc -m64 -o .../tools/testing/selftests/x86/sysret_ss_attrs_64 -O2 -g
-std=gnu99 -pthread -Wall sysret_ss_attrs.c thunks.S -lrt -ldl
/usr/bin/ld: /tmp/ccS6pvIh.o: relocation R_X86_64_32S against `.text'
can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
Makefile:49: recipe for target
'.../tools/testing/selftests/x86/sysret_ss_attrs_64' failed
make: *** [.../tools/testing/selftests/x86/sysret_ss_attrs_64] Error 1

Suggested-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
tools/testing/selftests/x86/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/tools/testing/selftests/x86/Makefile
+++ b/tools/testing/selftests/x86/Makefile
@@ -17,7 +17,7 @@ TARGETS_C_64BIT_ALL := $(TARGETS_C_BOTHB
BINARIES_32 := $(TARGETS_C_32BIT_ALL:%=%_32)
BINARIES_64 := $(TARGETS_C_64BIT_ALL:%=%_64)

-CFLAGS := -O2 -g -std=gnu99 -pthread -Wall
+CFLAGS := -O2 -g -std=gnu99 -pthread -Wall -no-pie

UNAME_M := $(shell uname -m)
CAN_BUILD_I386 := $(shell ./check_cc.sh $(CC) trivial_32bit_program.c -m32)

\
 
 \ /
  Last update: 2018-03-27 19:44    [W:0.180 / U:1.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site