diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2015-04-10 14:06:40 +0530 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2015-06-19 18:09:29 +0530 |
| commit | def32fad84975d5d28e070215038224ea7f0d4bc (patch) | |
| tree | c572269a428c47f4b5d7a54b4b1b29b0f55cee0a /arch/arc/kernel/stacktrace.c | |
| parent | 082ae1e1570c69a06221701718f548bd4000b95b (diff) | |
ARC: stack unwinder to bail if PC is not kernel mode
Currently, it doesn't invoke the callback but continues to unwind
Also while at it - simplify the code a bit
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/kernel/stacktrace.c')
| -rw-r--r-- | arch/arc/kernel/stacktrace.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/arch/arc/kernel/stacktrace.c b/arch/arc/kernel/stacktrace.c index 92320d6f737c..001de4ce711e 100644 --- a/arch/arc/kernel/stacktrace.c +++ b/arch/arc/kernel/stacktrace.c @@ -122,19 +122,17 @@ arc_unwind_core(struct task_struct *tsk, struct pt_regs *regs, while (1) { address = UNW_PC(&frame_info); - if (address && __kernel_text_address(address)) { - if (consumer_fn(address, arg) == -1) - break; - } + if (!address || !__kernel_text_address(address)) + break; - ret = arc_unwind(&frame_info); + if (consumer_fn(address, arg) == -1) + break; - if (ret == 0) { - frame_info.regs.r63 = frame_info.regs.r31; - continue; - } else { + ret = arc_unwind(&frame_info); + if (ret) break; - } + + frame_info.regs.r63 = frame_info.regs.r31; } return address; /* return the last address it saw */ |