RE: [PATCH v2] arm/stacktrace: stop unwinding after an invalid address.

[Vaneet Narang <v.narang@samsung.com>]

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Hi Russell,


>__dabt_usr+0x44/0x60
>0xb6748ea4
>^^^^^^^^

>--- a/arch/arm/kernel/stacktrace.c
>+++ b/arch/arm/kernel/stacktrace.c
>@@ -92,6 +92,9 @@ static int save_trace(struct stackframe *frame, void *d)
> 
> 	regs = (struct pt_regs *)frame->sp;
>
>+	if (!__kernel_text_address(regs->ARM_pc))
>+		return 1;
>+
> 	trace->entries[trace->nr_entries++] = regs->ARM_pc;
 
 
Any Inputs or Comments on this patch to avoid storing user space entries 
during unwind.
 
Regards,
Vaneet Narang

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   =================================================================================================================================
      Subject    : [PATCH v2] arm/stacktrace: stop unwinding after an invalid address.
      From       : Maninder Singh Engineer/SRI-Delhi-Platform S/W 1 Team/Samsung Electronics 
      Sent Date  : 2018-03-21 16:41  GMT+5:30
   =================================================================================================================================
                  Name                Type          Job Title                       Dept.                               Company                
   =================================================================================================================================
      linux@armlinux.org.uk          TO
      dustinb@codeaurora.org         TO
      linux-arm-kernel@lists.in...   CC
      linux-kernel@vger.kernel.org   CC
      AMIT SAHRAWAT                  CC         Staff Engineer             SRI-Delhi-Platform S/W 1 Team             Samsung Electronics
      PANKAJ MISHRA                  CC         Principal Professional     SRI-Delhi-Platform S/W 1 Team             Samsung Electronics
      Maninder Singh                 CC         Engineer                   SRI-Delhi-Platform S/W 1 Team             Samsung Electronics 
      Vaneet Narang                  CC         Staff Engineer             SRI-Delhi-Platform S/W 1 Team             Samsung Electronics
   =================================================================================================================================