Author: markj
Date: Sat Feb 22 01:41:45 2014
New Revision: 262325
URL: http://svnweb.freebsd.org/changeset/base/262325
Log:
Print a backtrace if the SDT(9) stub gets called so that there's at least
some hope of figuring out how it happened.
Suggested by: rstone
MFC after: 1 week
Modified:
head/sys/kern/kern_sdt.c
Modified: head/sys/kern/kern_sdt.c
==============================================================================
--- head/sys/kern/kern_sdt.c Sat Feb 22 01:19:47 2014 (r262324)
+++ head/sys/kern/kern_sdt.c Sat Feb 22 01:41:45 2014 (r262325)
@@ -27,6 +27,7 @@
#include <sys/param.h>
#include <sys/systm.h>
+#include <sys/kdb.h>
#include <sys/sdt.h>
SDT_PROVIDER_DEFINE(sdt);
@@ -47,5 +48,6 @@ sdt_probe_stub(uint32_t id, uintptr_t ar
uintptr_t arg2, uintptr_t arg3, uintptr_t arg4)
{
- printf("sdt_probe_stub: Why did this get called?\n");
+ printf("sdt_probe_stub: unexpectedly called\n");
+ kdb_backtrace();
}
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