Daniel Borkmann b485342bd7 x86, um: actually mark system call tables readonly ...

Commit a074335a370e ("x86, um: Mark system call tables readonly") was
supposed to mark the sys_call_table in UML as RO by adding the const,
but it doesn't have the desired effect as it's nevertheless being placed
into the data section since __cacheline_aligned enforces sys_call_table
being placed into .data..cacheline_aligned instead. We need to use
the ____cacheline_aligned version instead to fix this issue.

Before:

$ nm -v arch/x86/um/sys_call_table_64.o | grep -1 "sys_call_table"
                 U sys_writev
0000000000000000 D sys_call_table
0000000000000000 D syscall_table_size

After:

$ nm -v arch/x86/um/sys_call_table_64.o | grep -1 "sys_call_table"
                 U sys_writev
0000000000000000 R sys_call_table
0000000000000000 D syscall_table_size

Fixes: a074335a370e ("x86, um: Mark system call tables readonly")
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Richard Weinberger <richard@nod.at>

2015-01-04 14:21:25 +01:00

..

asm

arch: Add lightweight memory barriers dma_rmb() and dma_wmb()

2014-12-11 21:15:06 -05:00

os-Linux

um: prctl: Do not include linux/ptrace.h

2013-09-07 10:57:11 +02:00

shared/sysdep

sanitize rt_sigaction() situation a bit

2013-02-03 15:09:18 -05:00

vdso

x86, vdso: Clean up 32-bit vs 64-bit vdso params

2014-05-05 13:18:40 -07:00

bug.c

um: take arch/um/sys-x86 to arch/x86/um

2011-11-02 14:15:05 +01:00

bugs_32.c

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

bugs_64.c

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

checksum_32.S

um: remove csum_partial_copy_generic_i386 to clean up exception table

2014-10-13 17:15:02 +02:00

delay.c

um: merge delay_{32,64}.c

2011-11-02 14:15:37 +01:00

elfcore.c

switch elf_core_write_extra_data() to dump_emit()

2013-11-09 00:16:23 -05:00

fault.c

um: don't compare a pointer to 0

2012-12-20 11:49:39 -08:00

Kconfig

arch/um: make it work with defconfig and x86_64

2013-11-17 11:31:48 +01:00

ksyms.c

um: take arch/um/sys-x86 to arch/x86/um

2011-11-02 14:15:05 +01:00

ldt.c

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

Makefile

x86: switch to generic old sigaction

2013-02-03 18:16:27 -05:00

mem_32.c

coredump: remove VM_ALWAYSDUMP flag

2012-03-23 16:58:42 -07:00

mem_64.c

arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area

2014-08-08 15:57:27 -07:00

ptrace_32.c

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

ptrace_64.c

um: unify ptrace_user.h

2011-11-02 14:15:27 +01:00

ptrace_user.c

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

setjmp_32.S

um: take arch/um/sys-x86 to arch/x86/um

2011-11-02 14:15:05 +01:00

setjmp_64.S

um: take arch/um/sys-x86 to arch/x86/um

2011-11-02 14:15:05 +01:00

signal.c

um: Use get_signal() signal_setup_done()

2014-08-06 13:03:41 +02:00

stub_32.S

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

stub_64.S

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

stub_segv.c

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

sys_call_table_32.c

x86, um: actually mark system call tables readonly

2015-01-04 14:21:25 +01:00

sys_call_table_64.c

x86, um: actually mark system call tables readonly

2015-01-04 14:21:25 +01:00

syscalls_64.c

um: kill thread->forking

2012-09-27 18:04:55 +02:00

sysrq_32.c

um: Rewrite show_stack()

2013-11-17 11:27:25 +01:00

sysrq_64.c

um: Rewrite show_stack()

2013-11-17 11:27:25 +01:00

tls_32.c

make SYSCALL_DEFINE<n>-generated wrappers do asmlinkage_protect

2013-03-03 22:58:33 -05:00

tls_64.c

um: get rid of pointless include "..." where include <...> will do

2012-10-09 22:28:45 +02:00

user-offsets.c

x32: Add x32 system calls to syscall/syscall_64.tbl

2012-02-20 12:48:49 -08:00