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authorTamir Duberstein <tamird@google.com>2021-05-18 11:27:00 -0700
committergVisor bot <gvisor-bot@google.com>2021-05-18 11:29:15 -0700
commit5d04e0ae3391cfd518e73141f148ddb8e62faf60 (patch)
treee257aa9dcca68364b10efb0c01df6a3a476100d2 /pkg/tcpip/stack
parent32b66bb2be1b3b56138ca856045381519e210b68 (diff)
Emit more information on panic
PiperOrigin-RevId: 374464969
Diffstat (limited to 'pkg/tcpip/stack')
-rw-r--r--pkg/tcpip/stack/packet_buffer.go4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkg/tcpip/stack/packet_buffer.go b/pkg/tcpip/stack/packet_buffer.go
index 01652fbe7..4ca702121 100644
--- a/pkg/tcpip/stack/packet_buffer.go
+++ b/pkg/tcpip/stack/packet_buffer.go
@@ -245,10 +245,10 @@ func (pk *PacketBuffer) dataOffset() int {
func (pk *PacketBuffer) push(typ headerType, size int) tcpipbuffer.View {
h := &pk.headers[typ]
if h.length > 0 {
- panic(fmt.Sprintf("push must not be called twice: type %s", typ))
+ panic(fmt.Sprintf("push(%s, %d) called after previous push", typ, size))
}
if pk.pushed+size > pk.reserved {
- panic("not enough headroom reserved")
+ panic(fmt.Sprintf("push(%s, %d) overflows; pushed=%d reserved=%d", typ, size, pk.pushed, pk.reserved))
}
pk.pushed += size
h.offset = -pk.pushed