Author: hselasky
Date: Mon Feb 3 10:47:44 2020
New Revision: 357429
URL: https://svnweb.freebsd.org/changeset/base/357429
Log:
MFC r356633:
Make sure the VNET is properly set when reaping mbufs in ipoib.
Else the following panic may happen:
panic()
icmp_error()
ipoib_cm_mb_reap()
linux_work_fn()
taskqueue_run_locked()
taskqueue_thread_loop()
fork_exit()
fork_trampoline()
Submitted by: Andreas Kempe <ke...@lysator.liu.se>
Sponsored by: Mellanox Technologies
Modified:
stable/10/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_cm.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_cm.c
==============================================================================
--- stable/10/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_cm.c Mon Feb 3
10:46:29 2020 (r357428)
+++ stable/10/sys/ofed/drivers/infiniband/ulp/ipoib/ipoib_cm.c Mon Feb 3
10:47:44 2020 (r357429)
@@ -1259,6 +1259,8 @@ static void ipoib_cm_mb_reap(struct work_struct *work)
spin_lock_irqsave(&priv->lock, flags);
+ CURVNET_SET_QUIET(priv->dev->if_vnet);
+
for (;;) {
IF_DEQUEUE(&priv->cm.mb_queue, mb);
if (mb == NULL)
@@ -1284,6 +1286,8 @@ static void ipoib_cm_mb_reap(struct work_struct *work)
spin_lock_irqsave(&priv->lock, flags);
}
+
+ CURVNET_RESTORE();
spin_unlock_irqrestore(&priv->lock, flags);
}
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