[DTrace-devel] [PATCH 1/6] Convert ip6_finish_output to rawfbt

eugene.loh at oracle.com eugene.loh at oracle.com
Fri Sep 5 17:07:14 UTC 2025


From: Eugene Loh <eugene.loh at oracle.com>

With commit fe2101e55 ("fbt: implement based on fentry/fexit probes")
test/unittest/ip/tst.ipv6localicmp.sh started to fail.  The problem
appears to be that fbt::ip6_finish_output:entry, which is needed for
ip:::send, does not fire.

Use rawfbt for this probe to revert back to kprobes in this case.

Other fbt probes may also be impacted, but this case showed up in testing.

Signed-off-by: Eugene Loh <eugene.loh at oracle.com>
Reviewed-by: Alan Maguire <alan.maguire at oracle.com>
---
 libdtrace/dt_prov_ip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libdtrace/dt_prov_ip.c b/libdtrace/dt_prov_ip.c
index e0919806..5384346b 100644
--- a/libdtrace/dt_prov_ip.c
+++ b/libdtrace/dt_prov_ip.c
@@ -25,7 +25,7 @@ static probe_dep_t	probes[] = {
 	{ "send",
 	  DTRACE_PROBESPEC_NAME,	"fbt::ip_finish_output:entry" },
 	{ "send",
-	  DTRACE_PROBESPEC_NAME,	"fbt::ip6_finish_output:entry" },
+	  DTRACE_PROBESPEC_NAME,	"rawfbt::ip6_finish_output:entry" },
 	{ NULL, }
 };
 
-- 
2.47.3




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