The attached patch fixes the exception table handling so that modules
exceptions are dealt with.
Signed-Off-By: David Howells <[email protected]>
---
warthog>diffstat -p1 frv-extab-2615.diff
arch/frv/mm/extable.c | 34 +++++++++-------------------------
1 files changed, 9 insertions(+), 25 deletions(-)
diff -uNrp /warthog/kernels/linux-2.6.15/arch/frv/mm/extable.c linux-2.6.15-frv/arch/frv/mm/extable.c
--- /warthog/kernels/linux-2.6.15/arch/frv/mm/extable.c 2005-03-02 12:07:44.000000000 +0000
+++ linux-2.6.15-frv/arch/frv/mm/extable.c 2006-01-06 14:43:43.000000000 +0000
@@ -43,7 +43,7 @@ static inline unsigned long search_one_t
*/
unsigned long search_exception_table(unsigned long pc)
{
- unsigned long ret = 0;
+ const struct exception_table_entry *extab;
/* determine if the fault lay during a memcpy_user or a memset_user */
if (__frame->lr == (unsigned long) &__memset_user_error_lr &&
@@ -55,9 +55,10 @@ unsigned long search_exception_table(uns
*/
return (unsigned long) &__memset_user_error_handler;
}
- else if (__frame->lr == (unsigned long) &__memcpy_user_error_lr &&
- (unsigned long) &memcpy <= pc && pc < (unsigned long) &__memcpy_end
- ) {
+
+ if (__frame->lr == (unsigned long) &__memcpy_user_error_lr &&
+ (unsigned long) &memcpy <= pc && pc < (unsigned long) &__memcpy_end
+ ) {
/* the fault occurred in a protected memset
* - we search for the return address (in LR) instead of the program counter
* - it was probably during a copy_to/from_user()
@@ -65,27 +66,10 @@ unsigned long search_exception_table(uns
return (unsigned long) &__memcpy_user_error_handler;
}
-#ifndef CONFIG_MODULES
- /* there is only the kernel to search. */
- ret = search_one_table(__start___ex_table, __stop___ex_table - 1, pc);
- return ret;
-
-#else
- /* the kernel is the last "module" -- no need to treat it special */
- unsigned long flags;
- struct module *mp;
+ extab = search_exception_tables(pc);
+ if (extab)
+ return extab->fixup;
- spin_lock_irqsave(&modlist_lock, flags);
-
- for (mp = module_list; mp != NULL; mp = mp->next) {
- if (mp->ex_table_start == NULL || !(mp->flags & (MOD_RUNNING | MOD_INITIALIZING)))
- continue;
- ret = search_one_table(mp->ex_table_start, mp->ex_table_end - 1, pc);
- if (ret)
- break;
- }
+ return 0;
- spin_unlock_irqrestore(&modlist_lock, flags);
- return ret;
-#endif
} /* end search_exception_table() */
-
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