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Print a backtrace if the SDT(9) stub gets called so that there's at least

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some hope of figuring out how it happened.

Suggested by:	rstone
MFC after:	1 week
This commit is contained in:
markj 2014-02-22 01:41:45 +00:00
parent 82dd802622
commit 19ec16208e
1 changed files with 3 additions and 1 deletions
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4
sys/kern/kern_sdt.c
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@ -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 arg0, uintptr_t arg1,
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();
}