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 lukas.auer@aisec.fraunhofer.de ---
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"); + } }