evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

parisc: Avoid function pointers for kernel exception routines

Browse source 
commit e3893027a300927049efc1572f852201eb785142 upstream.

We want to avoid the kernel module loader to create function pointers
for the kernel fixup routines of get_user() and put_user(). Changing
the external reference from function type to int type fixes this.

This unbreaks exception handling for get_user() and put_user() when
called from a kernel module.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Helge Deller 2016-04-08 18:11:33 +02:00 • committed by Greg Kroah-Hartman
parent 19c1764a19
commit 7cdf5d71b4
1 changed files with 5 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
arch/parisc/kernel/parisc_ksyms.c
View file

@ -47,11 +47,11 @@ EXPORT_SYMBOL(__cmpxchg_u64);
EXPORT_SYMBOL(lclear_user); EXPORT_SYMBOL(lclear_user);
EXPORT_SYMBOL(lstrnlen_user); EXPORT_SYMBOL(lstrnlen_user);
/* Global fixups */ /* Global fixups - defined as int to avoid creation of function pointers */
extern void fixup_get_user_skip_1(void); extern int fixup_get_user_skip_1;
extern void fixup_get_user_skip_2(void); extern int fixup_get_user_skip_2;
extern void fixup_put_user_skip_1(void); extern int fixup_put_user_skip_1;
extern void fixup_put_user_skip_2(void); extern int fixup_put_user_skip_2;
EXPORT_SYMBOL(fixup_get_user_skip_1); EXPORT_SYMBOL(fixup_get_user_skip_1);
EXPORT_SYMBOL(fixup_get_user_skip_2); EXPORT_SYMBOL(fixup_get_user_skip_2);
EXPORT_SYMBOL(fixup_put_user_skip_1); EXPORT_SYMBOL(fixup_put_user_skip_1);