diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-02-17 18:40:54 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-02-17 18:40:54 -0300 |
| commit | 859f7e45542aecaa77fde929232cbcf91b29e11d (patch) | |
| tree | 5e81bbb0145bf2467e85ee8106734b4130f52ec0 /arch/riscv/kernel/stacktrace.c | |
| parent | 052747700e914896e8c78ff019411487dc7c12a0 (diff) | |
| parent | b3d971ec25346d6890e9e8f05b63f758cfcef8c5 (diff) | |
Merge remote-tracking branch 'torvalds/master' into perf/core
To pick up fixes from perf/urgent that recently got merged.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'arch/riscv/kernel/stacktrace.c')
| -rw-r--r-- | arch/riscv/kernel/stacktrace.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c index 201ee206fb57d..14d2b53ec322d 100644 --- a/arch/riscv/kernel/stacktrace.c +++ b/arch/riscv/kernel/stacktrace.c @@ -22,15 +22,16 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, bool (*fn)(void *, unsigned long), void *arg) { unsigned long fp, sp, pc; + int level = 0; if (regs) { fp = frame_pointer(regs); sp = user_stack_pointer(regs); pc = instruction_pointer(regs); } else if (task == NULL || task == current) { - fp = (unsigned long)__builtin_frame_address(1); - sp = (unsigned long)__builtin_frame_address(0); - pc = (unsigned long)__builtin_return_address(0); + fp = (unsigned long)__builtin_frame_address(0); + sp = sp_in_global; + pc = (unsigned long)walk_stackframe; } else { /* task blocked in __switch_to */ fp = task->thread.s[0]; @@ -42,7 +43,7 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs, unsigned long low, high; struct stackframe *frame; - if (unlikely(!__kernel_text_address(pc) || !fn(arg, pc))) + if (unlikely(!__kernel_text_address(pc) || (level++ >= 1 && !fn(arg, pc)))) break; /* Validate frame pointer */ |