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-rw-r--r--kernel/hw_breakpoint.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/kernel/hw_breakpoint.c b/kernel/hw_breakpoint.c
index c16662268d75..06d372fc026d 100644
--- a/kernel/hw_breakpoint.c
+++ b/kernel/hw_breakpoint.c
@@ -267,7 +267,16 @@ int __register_perf_hw_breakpoint(struct perf_event *bp)
if (ret)
return ret;
- if (!bp->attr.disabled)
+ /*
+ * Ptrace breakpoints can be temporary perf events only
+ * meant to reserve a slot. In this case, it is created disabled and
+ * we don't want to check the params right now (as we put a null addr)
+ * But perf tools create events as disabled and we want to check
+ * the params for them.
+ * This is a quick hack that will be removed soon, once we remove
+ * the tmp breakpoints from ptrace
+ */
+ if (!bp->attr.disabled || bp->callback == perf_bp_event)
ret = arch_validate_hwbkpt_settings(bp, bp->ctx->task);
return ret;