Chuck Lever ff04f342f8 xprtrdma: Fix DMA scatter-gather list mapping imbalance ... commit ca1c671302 upstream. The @nents value that was passed to ib_dma_map_sg() has to be passed to the matching ib_dma_unmap_sg() call. If ib_dma_map_sg() choses to concatenate sg entries, it will return a different nents value than it was passed. The bug was exposed by recent changes to the AMD IOMMU driver, which enabled sg entry concatenation. Looking all the way back to commit 4143f34e01 ("xprtrdma: Port to new memory registration API") and reviewing other kernel ULPs, it's not clear that the frwr_map() logic was ever correct for this case. Reported-by: Andre Tomt <andre@tomt.net> Suggested-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Cc: stable@vger.kernel.org Reviewed-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-02-19 19:53:02 +01:00
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Makefile	xprtrdma: Remove support for FMR memory registration	2019-01-02 12:05:17 -05:00
backchannel.c	SUNRPC: The RDMA back channel mustn't disappear while requests are outstanding	2019-10-30 12:04:35 -04:00
frwr_ops.c	xprtrdma: Fix DMA scatter-gather list mapping imbalance	2020-02-19 19:53:02 +01:00
module.c	NFS client updates for Linux 4.18	2018-06-12 10:09:03 -07:00
rpc_rdma.c	xprtrdma: Close window between waking RPC senders and posting Receives	2020-01-17 19:48:38 +01:00
svc_rdma.c	svcrdma: Remove svc_rdma_wq	2019-08-19 10:59:28 -04:00
svc_rdma_backchannel.c	SUNRPC: Fix backchannel latency metrics	2020-01-26 10:00:59 +01:00
svc_rdma_recvfrom.c	svcrdma: Use llist for managing cache of recv_ctxts	2019-08-19 10:59:28 -04:00
svc_rdma_rw.c	scsi: lib/sg_pool.c: improve APIs for allocating sg pool	2019-06-20 15:21:33 -04:00
svc_rdma_sendto.c	svcrdma: Remove syslog warnings in work completion handlers	2019-02-06 15:37:15 -05:00
svc_rdma_transport.c	Highlights:	2019-09-27 17:00:27 -07:00
transport.c	xprtrdma: Connection becomes unstable after a reconnect	2020-01-17 19:48:38 +01:00
verbs.c	xprtrdma: Fix oops in Receive handler after device removal	2020-01-17 19:48:44 +01:00
xprt_rdma.h	xprtrdma: Fix oops in Receive handler after device removal	2020-01-17 19:48:44 +01:00