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parisc: Avoid function pointers for kernel exception routines

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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>
Cc: stable@vger.kernel.org
Signed-off-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Helge Deller
2016-04-08 18:11:33 +02:00
committed by Willy Tarreau
parent 1c6a2c4cf5
commit ac6a8eb7a7
1 changed files with 5 additions and 5 deletions
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arch/parisc/kernel/parisc_ksyms.c
+5 -5
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@@ -47,11 +47,11 @@ EXPORT_SYMBOL(__cmpxchg_u64);
EXPORT_SYMBOL(lclear_user);
EXPORT_SYMBOL(lstrnlen_user);
/* Global fixups */
extern void fixup_get_user_skip_1(void);
extern void fixup_get_user_skip_2(void);
extern void fixup_put_user_skip_1(void);
extern void fixup_put_user_skip_2(void);
/* Global fixups - defined as int to avoid creation of function pointers */
extern int fixup_get_user_skip_1;
extern int fixup_get_user_skip_2;
extern int fixup_put_user_skip_1;
extern int fixup_put_user_skip_2;
EXPORT_SYMBOL(fixup_get_user_skip_1);
EXPORT_SYMBOL(fixup_get_user_skip_2);
EXPORT_SYMBOL(fixup_put_user_skip_1);