Author: np
Date: Thu May 30 17:27:40 2019
New Revision: 348440
URL: https://svnweb.freebsd.org/changeset/base/348440
Log:
cxgbe/t4_tom: Do not attempt to look up entries in the TCB history if
it hasn't been initialized.
This fixes a bug in r346570 that could cause a panic when servicing
TCP_INFO for offloaded connections.
MFC after: 3 days
Sponsored by: Chelsio Communications
Modified:
head/sys/dev/cxgbe/tom/t4_tom.c
Modified: head/sys/dev/cxgbe/tom/t4_tom.c
==============================================================================
--- head/sys/dev/cxgbe/tom/t4_tom.c Thu May 30 17:00:57 2019
(r348439)
+++ head/sys/dev/cxgbe/tom/t4_tom.c Thu May 30 17:27:40 2019
(r348440)
@@ -537,6 +537,9 @@ lookup_tcb_histent(struct adapter *sc, u_int tid, bool
MPASS(tid < sc->tids.ntids);
+ if (td->tcb_history == NULL)
+ return (NULL);
+
if (addrem)
rw_wlock(&td->tcb_history_lock);
else
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