[PATCH] POWERPC: Make alignment exception always check exception table

[karo-tx-linux.git] / arch / powerpc / kernel / traps.c

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 9b352bd0a46011714482b1b9daaa2216f5e421e9..20780f83fa092d07a67be693f73b0678aeb98f19 100644 (file)
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -818,7 +818,7 @@ void __kprobes program_check_exception(struct pt_regs *regs)
 
 void alignment_exception(struct pt_regs *regs)
 {
-       int fixed = 0;
+       int sig, code, fixed = 0;
 
        /* we don't implement logging of alignment exceptions */
        if (!(current->thread.align_ctl & PR_UNALIGN_SIGBUS))
@@ -832,14 +832,16 @@ void alignment_exception(struct pt_regs *regs)
 
        /* Operand address was bad */
        if (fixed == -EFAULT) {
-               if (user_mode(regs))
-                       _exception(SIGSEGV, regs, SEGV_ACCERR, regs->dar);
-               else
-                       /* Search exception table */
-                       bad_page_fault(regs, regs->dar, SIGSEGV);
-               return;
+               sig = SIGSEGV;
+               code = SEGV_ACCERR;
+       } else {
+               sig = SIGBUS;
+               code = BUS_ADRALN;
        }
-       _exception(SIGBUS, regs, BUS_ADRALN, regs->dar);
+       if (user_mode(regs))
+               _exception(sig, regs, code, regs->dar);
+       else
+               bad_page_fault(regs, regs->dar, sig);
 }
 
 void StackOverflow(struct pt_regs *regs)