diff options
Diffstat (limited to 'arch/riscv/kernel/stacktrace.c')
-rw-r--r-- | arch/riscv/kernel/stacktrace.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index bcfe9eb55f80..75c8dd64fc48 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -16,6 +16,8 @@ #ifdef CONFIG_FRAME_POINTER +extern asmlinkage void ret_from_exception(void); + void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, bool (*fn)(void *, unsigned long), void *arg) { @@ -59,6 +61,13 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, fp = frame->fp; pc = ftrace_graph_ret_addr(current, NULL, frame->ra, &frame->ra); + if (pc == (unsigned long)ret_from_exception) { + if (unlikely(!__kernel_text_address(pc) || !fn(arg, pc))) + break; + + pc = ((struct pt_regs *)sp)->epc; + fp = ((struct pt_regs *)sp)->s0; + } } } |