Debugging changes for Podman issue #26073

Link: https://github.com/containers/podman/issues/26073
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

3 files changed, 12 insertions, 3 deletions

diff --git a/Makefile b/Makefile
index 3328f83..5da913f 100644
--- a/Makefile
+++ b/Makefile
@@ -32,7 +32,7 @@ endif
 
 FLAGS := -Wall -Wextra -Wno-format-zero-length -Wformat-security
 FLAGS += -pedantic -std=c11 -D_XOPEN_SOURCE=700 -D_GNU_SOURCE
-FLAGS +=  $(FORTIFY_FLAG) -O2 -pie -fPIE
+FLAGS +=  $(FORTIFY_FLAG) -g -Og -pie -fPIE
 FLAGS += -DPAGE_SIZE=$(shell getconf PAGE_SIZE)
 FLAGS += -DVERSION=\"$(VERSION)\"
 FLAGS += -DDUAL_STACK_SOCKETS=$(DUAL_STACK_SOCKETS)
diff --git a/isolation.c b/isolation.c
index c944fb3..72d8513 100644
--- a/isolation.c
+++ b/isolation.c
@@ -377,8 +377,6 @@ void isolate_postfork(const struct ctx *c)
 {
 	struct sock_fprog prog;
 
-	prctl(PR_SET_DUMPABLE, 0);
-
 	switch (c->mode) {
 	case MODE_PASST:
 		prog.len = (unsigned short)ARRAY_SIZE(filter_passt);
diff --git a/udp_flow.c b/udp_flow.c
index fea1cf3..bc12240 100644
--- a/udp_flow.c
+++ b/udp_flow.c
@@ -32,6 +32,17 @@ struct udp_flow *udp_at_sidx(flow_sidx_t sidx)
 	if (!flow)
 		return NULL;
 
+	if (flow->f.type != FLOW_UDP) {
+		union flow *next = &flowtab[++flow_first_free];
+
+		err("=== Podman issue #26073, index: %i", FLOW_IDX(flow));
+		err("=== state: %i, type: %i", flow->f.state, flow->f.type);
+		err("=== n: %i, next: %i", next->free.n, next->free.next);
+		flow_err(flow, "");
+		flow_err_details(flow);
+		ASSERT(false);
+	}
+
 	ASSERT(flow->f.type == FLOW_UDP);
 	return &flow->udp;
 }