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From: Hans Petter Selasky <hselasky@FreeBSD.org>
Date: Tue, 17 Jul 2018 09:18:16 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
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Subject: svn commit: r336377 - head/sys/ofed/drivers/infiniband/core
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Author: hselasky
Date: Tue Jul 17 09:18:16 2018
New Revision: 336377
URL: https://svnweb.freebsd.org/changeset/base/336377

Log:
  Fix kernel panic while using XRC_TGT QP type in ibcore.
  
  Attempt to modify XRC_TGT QP type from the user space (ibv_xsrq_pingpong
  invocation) will trigger the following kernel panic. It is caused by the
  fact that such QPs missed uobject initialization.
  
  Linux commit:
  f45765872e7aae7b81feb3044aaf9886b21885ef
  
  MFC after:		1 week
  Sponsored by:		Mellanox Technologies

Modified:
  head/sys/ofed/drivers/infiniband/core/ib_uverbs_cmd.c

Modified: head/sys/ofed/drivers/infiniband/core/ib_uverbs_cmd.c
==============================================================================
--- head/sys/ofed/drivers/infiniband/core/ib_uverbs_cmd.c	Tue Jul 17 09:16:54 2018	(r336376)
+++ head/sys/ofed/drivers/infiniband/core/ib_uverbs_cmd.c	Tue Jul 17 09:18:16 2018	(r336377)
@@ -1943,6 +1943,9 @@ static int create_qp(struct ib_uverbs_file *file,
 			atomic_inc(&attr.srq->usecnt);
 		if (ind_tbl)
 			atomic_inc(&ind_tbl->usecnt);
+	} else {
+		/* It is done in _ib_create_qp for other QP types */
+		qp->uobject = &obj->uevent.uobject;
 	}
 	qp->uobject = &obj->uevent.uobject;