diff options
| author | Jose Abreu <Jose.Abreu@synopsys.com> | 2017-08-29 11:14:20 +0200 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2017-09-01 20:26:29 +0200 |
| commit | aa7e3a5e8b63628c7fc131effc163ade08ced41b (patch) | |
| tree | a831af6cd0134d6bed0c6a7619a74fb624d6d1a4 /arch | |
| parent | ARC: [plat-hsdk] initial port for HSDK board (diff) | |
| download | linux-aa7e3a5e8b63628c7fc131effc163ade08ced41b.tar.xz linux-aa7e3a5e8b63628c7fc131effc163ade08ced41b.zip | |
ARC: Show fault information passed to show_kernel_fault_diag()
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.
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:
|
| Unhandled 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 => Machine Check (Other Fatal Err)
|
Which can help debugging.
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arc/kernel/traps.c | 2 | ||||
| -rw-r--r-- | arch/arc/kernel/troubleshoot.c | 5 |
2 files changed, 5 insertions, 2 deletions
diff --git a/arch/arc/kernel/traps.c b/arch/arc/kernel/traps.c index 62675b94fccd..bcd7c9fc5d0f 100644 --- a/arch/arc/kernel/traps.c +++ b/arch/arc/kernel/traps.c @@ -103,7 +103,7 @@ int do_misaligned_access(unsigned long address, struct pt_regs *regs, */ void do_machine_check_fault(unsigned long address, struct pt_regs *regs) { - die("Machine Check Exception", regs, address); + die("Unhandled Machine Check Exception", regs, address); } diff --git a/arch/arc/kernel/troubleshoot.c b/arch/arc/kernel/troubleshoot.c index f9caf79186d4..7e94476f3994 100644 --- a/arch/arc/kernel/troubleshoot.c +++ b/arch/arc/kernel/troubleshoot.c @@ -140,7 +140,7 @@ static void show_ecr_verbose(struct pt_regs *regs) } else if (vec == ECR_V_ITLB_MISS) { pr_cont("Insn could not be fetched\n"); } else if (vec == ECR_V_MACH_CHK) { - pr_cont("%s\n", (cause_code == 0x0) ? + pr_cont("Machine Check (%s)\n", (cause_code == 0x0) ? "Double Fault" : "Other Fatal Err"); } else if (vec == ECR_V_PROTV) { @@ -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); |