summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel/traps.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
-rw-r--r--arch/powerpc/kernel/traps.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 33c47fcc455a..9229ba63c370 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -1147,6 +1147,7 @@ void __kprobes program_check_exception(struct pt_regs *regs)
goto bail;
}
if (reason & REASON_TRAP) {
+ unsigned long bugaddr;
/* Debugger is first in line to stop recursive faults in
* rcu_lock, notify_die, or atomic_notifier_call_chain */
if (debugger_bpt(regs))
@@ -1157,8 +1158,15 @@ void __kprobes program_check_exception(struct pt_regs *regs)
== NOTIFY_STOP)
goto bail;
+ bugaddr = regs->nip;
+ /*
+ * Fixup bugaddr for BUG_ON() in real mode
+ */
+ if (!is_kernel_addr(bugaddr) && !(regs->msr & MSR_IR))
+ bugaddr += PAGE_OFFSET;
+
if (!(regs->msr & MSR_PR) && /* not user-mode */
- report_bug(regs->nip, regs) == BUG_TRAP_TYPE_WARN) {
+ report_bug(bugaddr, regs) == BUG_TRAP_TYPE_WARN) {
regs->nip += 4;
goto bail;
}
@@ -1393,7 +1401,7 @@ void facility_unavailable_exception(struct pt_regs *regs)
* is a read DSCR attempt through a mfspr instruction, we
* just emulate the instruction instead. This code path will
* always emulate all the mfspr instructions till the user
- * has attempted atleast one mtspr instruction. This way it
+ * has attempted at least one mtspr instruction. This way it
* preserves the same behaviour when the user is accessing
* the DSCR through privilege level only SPR number (0x11)
* which is emulated through illegal instruction exception.