From 9a6e7af02f7fcc8c68e9d6ce167ee6ab0052cb60 Mon Sep 17 00:00:00 2001 From: Vincent Chen Date: Tue, 5 Mar 2019 11:23:35 +0800 Subject: [PATCH] riscv: Support BUG() in kernel module The kernel module is loaded into vmalloc region which is located below to the PAGE_OFFSET. Hence the condition, pc < PAGE_OFFSET, in the is_valid_bugaddr() will filter out all trap exceptions triggered by kernel module. To support BUG() in kernel module, the condition is changed to pc < VMALLOC_START. Signed-off-by: Vincent Chen Signed-off-by: Christoph Hellwig Signed-off-by: Palmer Dabbelt --- arch/riscv/kernel/traps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c index c34cc5418e21..3d1a651dc54c 100644 --- a/arch/riscv/kernel/traps.c +++ b/arch/riscv/kernel/traps.c @@ -156,7 +156,7 @@ int is_valid_bugaddr(unsigned long pc) { bug_insn_t insn; - if (pc < PAGE_OFFSET) + if (pc < VMALLOC_START) return 0; if (probe_kernel_address((bug_insn_t *)pc, insn)) return 0; -- 2.30.2