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Commit e909be82 authored by Vincent Wen's avatar Vincent Wen Committed by Ralf Baechle
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MIPS: Fix Magic SysRq L kernel crash. 



show_backtrace() was passed a NULL pointer which caused paging
request fail. Set to current task as other architectures (ARM,
etc) do when passed a NULL task pointer.

Signed-off-by: default avatarVincent Wen <vincentwenlinux@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/3524/


Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
parent ca760ca5

arch/mips/kernel/traps.c

+3 −0
Original line number Diff line number Diff line
@@ -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;