show_backtrace() was passed a NULL pointer which caused paging
request fail. Set to current task as other platforms(ARM,
etc) do when passed a NULL task pointer.
Signed-off-by: Vincent Wen <vincentwenlinux@xxxxxxxxx>
---
arch/mips/kernel/traps.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 83b2b6a..ced68b0 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -132,6 +132,9 @@ static void show_backtrace(struct task_struct *task, const struct pt_regs *regs)
unsigned long ra = regs->regs[31];
unsigned long pc = regs->cp0_epc;
+ if (!task)
+ task = current;
+
if (raw_show_trace || !__kernel_text_address(pc)) {
show_raw_backtrace(sp);
return;
--
1.7.9.1.g8d994
