On 08/29/2017 02:14 AM, Jose Abreu wrote:
Currently we pass a string argument to show_kernel_fault_diag() which describes the reason for the fault. This is not being used so just add a pr_info() which outputs the fault information.
OK, I've also fixed show_ecr_verbose() to call out Machine check - see below
With this change we get from: -------------------------- Path: /bin/busybox CPU: 0 PID: 92 Comm: modprobe Not tainted 4.12.0-rc6 #30 task: 9a254780 task.stack: 9a212000 [ECR ]: 0x00200400 => Other Fatal Err -------------------------- to: -------------------------- Machine Check Exception Path: /bin/busybox CPU: 0 PID: 92 Comm: modprobe Not tainted 4.12.0-rc6 #37 task: 9a240780 task.stack: 9a226000 [ECR ]: 0x00200400 => Other Fatal Err
This now prints as [ECR ]: 0x00200400 => Machine Check (Other Fatal Err)
-------------------------- Which can help debugging. Signed-off-by: Jose Abreu <joab...@synopsys.com> Cc: Vineet Gupta <vgu...@synopsys.com> Cc: Alexey Brodkin <abrod...@synopsys.com> --- arch/arc/kernel/troubleshoot.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c index f9caf79..03f0654 100644 --- a/arch/arc/kernel/troubleshoot.c +++ b/arch/arc/kernel/troubleshoot.c @@ -233,6 +233,9 @@ void show_kernel_fault_diag(const char *str, struct pt_regs *regs, { current->thread.fault_address = address;+ /* Show fault description */+ pr_info("\n%s\n", str); + /* Caller and Callee regs */ show_regs(regs);
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