diff options
Diffstat (limited to 'arch/powerpc/perf/callchain.c')
| -rw-r--r-- | arch/powerpc/perf/callchain.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/powerpc/perf/callchain.c b/arch/powerpc/perf/callchain.c index 082f6d0308a4..6b4434dd0ff3 100644 --- a/arch/powerpc/perf/callchain.c +++ b/arch/powerpc/perf/callchain.c @@ -27,7 +27,7 @@ static int valid_next_sp(unsigned long sp, unsigned long prev_sp) { if (sp & 0xf) return 0; /* must be 16-byte aligned */ - if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD)) + if (!validate_sp(sp, current)) return 0; if (sp >= prev_sp + STACK_FRAME_MIN_SIZE) return 1; @@ -53,7 +53,7 @@ perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *re sp = regs->gpr[1]; perf_callchain_store(entry, perf_instruction_pointer(regs)); - if (!validate_sp(sp, current, STACK_FRAME_OVERHEAD)) + if (!validate_sp(sp, current)) return; for (;;) { @@ -61,12 +61,13 @@ perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *re next_sp = fp[0]; if (next_sp == sp + STACK_INT_FRAME_SIZE && - fp[STACK_FRAME_MARKER] == STACK_FRAME_REGS_MARKER) { + validate_sp_size(sp, current, STACK_INT_FRAME_SIZE) && + fp[STACK_INT_FRAME_MARKER_LONGS] == STACK_FRAME_REGS_MARKER) { /* * This looks like an interrupt frame for an * interrupt that occurred in the kernel */ - regs = (struct pt_regs *)(sp + STACK_FRAME_OVERHEAD); + regs = (struct pt_regs *)(sp + STACK_INT_FRAME_REGS); next_ip = regs->nip; lr = regs->link; level = 0; |