Re: [U-Boot] [PATCH 15/30] riscv: treat undefined exception codes as reserved

[Rick Chen]

> > > Undefined exception codes currently lead to an out-of-bounds array
> > > access. Prevent this by treating undefined exception codes as
> > > "reserved".
> > >
> > > Signed-off-by: Lukas Auer 
> > > ---
> > >
> > >  arch/riscv/lib/interrupts.c | 8 ++--
> > >  1 file changed, 6 insertions(+), 2 deletions(-)
> > >
> >
> > Reviewed-by: Bin Meng 

Reviewed-by: Rick Chen 
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Re: [U-Boot] [PATCH 15/30] riscv: treat undefined exception codes as reserved

[Bin Meng]

On Sat, Oct 20, 2018 at 6:10 AM Lukas Auer
 wrote:
>
> Undefined exception codes currently lead to an out-of-bounds array
> access. Prevent this by treating undefined exception codes as
> "reserved".
>
> Signed-off-by: Lukas Auer 
> ---
>
>  arch/riscv/lib/interrupts.c | 8 ++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>

Reviewed-by: Bin Meng 
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[U-Boot] [PATCH 15/30] riscv: treat undefined exception codes as reserved

[Lukas Auer]

Undefined exception codes currently lead to an out-of-bounds array
access. Prevent this by treating undefined exception codes as
"reserved".

Signed-off-by: Lukas Auer 
---

 arch/riscv/lib/interrupts.c | 8 ++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/lib/interrupts.c b/arch/riscv/lib/interrupts.c
index 3d830c3273..32d0598750 100644
--- a/arch/riscv/lib/interrupts.c
+++ b/arch/riscv/lib/interrupts.c
@@ -81,6 +81,10 @@ static void _exit_trap(ulong code, ulong epc, struct pt_regs 
*regs)
"Store/AMO page fault",
};
 
-   printf("exception code: %ld , %s , epc %016lx , ra %016lx\n",
-   code, exception_code[code], epc, regs->ra);
+   if (code < ARRAY_SIZE(exception_code)) {
+   printf("exception code: %ld , %s , epc %016lx , ra %016lx\n",
+  code, exception_code[code], epc, regs->ra);
+   } else {
+   printf("Reserved\n");
+   }
 }
-- 
2.17.2

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