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authorLukas Auer <lukas.auer@aisec.fraunhofer.de>2018-11-22 11:26:21 +0100
committerAndes <uboot@andestech.com>2018-11-26 13:57:30 +0800
commite8b522b1df8b5874e08b53f6e5aef8a2c458446b (patch)
tree3cb9fc9d007445d6613de2304b4ec8966ba358fd /arch/riscv/lib
parent5a441736b7dda7fd4dde0a2417aeab59a9ef9424 (diff)
riscv: treat undefined exception codes as reserved
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> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Rick Chen <rick@andestech.com>
Diffstat (limited to 'arch/riscv/lib')
-rw-r--r--arch/riscv/lib/interrupts.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/riscv/lib/interrupts.c b/arch/riscv/lib/interrupts.c
index 6a12818c2b..d0d8de500e 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 %lx , ra %lx\n",
- code, exception_code[code], epc, regs->ra);
+ if (code < ARRAY_SIZE(exception_code)) {
+ printf("exception code: %ld , %s , epc %lx , ra %lx\n",
+ code, exception_code[code], epc, regs->ra);
+ } else {
+ printf("Reserved\n");
+ }
}