* [PATCH V2] xprtrdma: Fix DMA-API-DEBUG warning by checking dma_map result
@ 2014-06-19 13:06 Yan Burman
[not found] ` <1403183190-21607-1-git-send-email-yanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Yan Burman @ 2014-06-19 13:06 UTC (permalink / raw)
To: linux-nfs-u79uwXL29TY76Z2rM5mHXA,
linux-rdma-u79uwXL29TY76Z2rM5mHXA
Cc: Yan Burman
Fix the following warning when DMA-API debug is enabled by checking ib_dma_map_single result:
[ 1455.345548] ------------[ cut here ]------------
[ 1455.346863] WARNING: CPU: 3 PID: 3929 at /home/yanb/kernel/net-next/lib/dma-debug.c:1140 check_unmap+0x4e5/0x990()
[ 1455.349350] mlx4_core 0000:00:07.0: DMA-API: device driver failed to check map error[device address=0x000000007c9f2090] [size=2656 bytes] [mapped as single]
[ 1455.349350] Modules linked in: xprtrdma netconsole configfs nfsv3 nfs_acl ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm autofs4 auth_rpcgss oid_registry nfsv4 nfs fscache lockd sunrpc dm_mirror dm_region_hash dm_log microcode pcspkr mlx4_ib ib_sa ib_mad ib_core ib_addr mlx4_en ipv6 ptp pps_core vxlan mlx4_core virtio_balloon cirrus ttm drm_kms_helper drm sysimgblt sysfillrect syscopyarea i2c_piix4 i2c_core button ext3 jbd virtio_blk virtio_net virtio_pci virtio_ring virtio uhci_hcd ata_generic ata_piix libata
[ 1455.349350] CPU: 3 PID: 3929 Comm: mount.nfs Not tainted 3.15.0-rc1-dbg+ #13
[ 1455.349350] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007
[ 1455.349350] 0000000000000474 ffff880069dcf628 ffffffff8151c341 ffffffff817b69d8
[ 1455.349350] ffff880069dcf678 ffff880069dcf668 ffffffff8105b5fc 0000000069dcf658
[ 1455.349350] ffff880069dcf778 ffff88007b0c9f00 ffffffff8255ec40 0000000000000a60
[ 1455.349350] Call Trace:
[ 1455.349350] [<ffffffff8151c341>] dump_stack+0x52/0x81
[ 1455.349350] [<ffffffff8105b5fc>] warn_slowpath_common+0x8c/0xc0
[ 1455.349350] [<ffffffff8105b6e6>] warn_slowpath_fmt+0x46/0x50
[ 1455.349350] [<ffffffff812e6305>] check_unmap+0x4e5/0x990
[ 1455.349350] [<ffffffff81521fb0>] ? _raw_spin_unlock_irq+0x30/0x60
[ 1455.349350] [<ffffffff812e6a0a>] debug_dma_unmap_page+0x5a/0x60
[ 1455.349350] [<ffffffffa0389583>] rpcrdma_deregister_internal+0xb3/0xd0 [xprtrdma]
[ 1455.349350] [<ffffffffa038a639>] rpcrdma_buffer_destroy+0x69/0x170 [xprtrdma]
[ 1455.349350] [<ffffffffa03872ff>] xprt_rdma_destroy+0x3f/0xb0 [xprtrdma]
[ 1455.349350] [<ffffffffa04a95ff>] xprt_destroy+0x6f/0x80 [sunrpc]
[ 1455.349350] [<ffffffffa04a9625>] xprt_put+0x15/0x20 [sunrpc]
[ 1455.349350] [<ffffffffa04a899a>] rpc_free_client+0x8a/0xe0 [sunrpc]
[ 1455.349350] [<ffffffffa04a8a58>] rpc_release_client+0x68/0xa0 [sunrpc]
[ 1455.349350] [<ffffffffa04a9060>] rpc_shutdown_client+0xb0/0xc0 [sunrpc]
[ 1455.349350] [<ffffffffa04a8f5d>] ? rpc_ping+0x5d/0x70 [sunrpc]
[ 1455.349350] [<ffffffffa04a91ab>] rpc_create_xprt+0xbb/0xd0 [sunrpc]
[ 1455.349350] [<ffffffffa04a9273>] rpc_create+0xb3/0x160 [sunrpc]
[ 1455.349350] [<ffffffff81129749>] ? __probe_kernel_read+0x69/0xb0
[ 1455.349350] [<ffffffffa053851c>] nfs_create_rpc_client+0xdc/0x100 [nfs]
[ 1455.349350] [<ffffffffa0538cfa>] nfs_init_client+0x3a/0x90 [nfs]
[ 1455.349350] [<ffffffffa05391c8>] nfs_get_client+0x478/0x5b0 [nfs]
[ 1455.349350] [<ffffffffa0538e50>] ? nfs_get_client+0x100/0x5b0 [nfs]
[ 1455.349350] [<ffffffff81172c6d>] ? kmem_cache_alloc_trace+0x24d/0x260
[ 1455.349350] [<ffffffffa05393f3>] nfs_create_server+0xf3/0x4c0 [nfs]
[ 1455.349350] [<ffffffffa0545ff0>] ? nfs_request_mount+0xf0/0x1a0 [nfs]
[ 1455.349350] [<ffffffffa031c0c3>] nfs3_create_server+0x13/0x30 [nfsv3]
[ 1455.349350] [<ffffffffa0546293>] nfs_try_mount+0x1f3/0x230 [nfs]
[ 1455.349350] [<ffffffff8108ea21>] ? get_parent_ip+0x11/0x50
[ 1455.349350] [<ffffffff812d6343>] ? __this_cpu_preempt_check+0x13/0x20
[ 1455.349350] [<ffffffff810d632b>] ? try_module_get+0x6b/0x190
[ 1455.349350] [<ffffffffa05449f7>] nfs_fs_mount+0x187/0x9d0 [nfs]
[ 1455.349350] [<ffffffffa0545940>] ? nfs_clone_super+0x140/0x140 [nfs]
[ 1455.349350] [<ffffffffa0543b20>] ? nfs_auth_info_match+0x40/0x40 [nfs]
[ 1455.349350] [<ffffffff8117e360>] mount_fs+0x20/0xe0
[ 1455.349350] [<ffffffff811a1c16>] vfs_kern_mount+0x76/0x160
[ 1455.349350] [<ffffffff811a29a8>] do_mount+0x428/0xae0
[ 1455.349350] [<ffffffff811a30f0>] SyS_mount+0x90/0xe0
[ 1455.349350] [<ffffffff8152af52>] system_call_fastpath+0x16/0x1b
[ 1455.349350] ---[ end trace f1f31572972e211d ]---
Signed-off-by: Yan Burman <yanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
---
Changes from V1:
Removed curly braces
net/sunrpc/xprtrdma/verbs.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 13dbd1c..176dafc 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -1388,6 +1388,9 @@ rpcrdma_register_internal(struct rpcrdma_ia *ia, void *va, int len,
*/
iov->addr = ib_dma_map_single(ia->ri_id->device,
va, len, DMA_BIDIRECTIONAL);
+ if (ib_dma_mapping_error(ia->ri_id->device, iov->addr))
+ return -ENOMEM;
+
iov->length = len;
if (ia->ri_have_dma_lkey) {
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply related [flat|nested] 3+ messages in thread[parent not found: <1403183190-21607-1-git-send-email-yanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>]
* Re: [PATCH V2] xprtrdma: Fix DMA-API-DEBUG warning by checking dma_map result [not found] ` <1403183190-21607-1-git-send-email-yanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> @ 2014-06-24 13:47 ` Anna Schumaker [not found] ` <53A9818D.40800-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 0 siblings, 1 reply; 3+ messages in thread From: Anna Schumaker @ 2014-06-24 13:47 UTC (permalink / raw) To: Yan Burman, linux-nfs-u79uwXL29TY76Z2rM5mHXA, linux-rdma-u79uwXL29TY76Z2rM5mHXA, Chuck Lever On 06/19/2014 09:06 AM, Yan Burman wrote: > Fix the following warning when DMA-API debug is enabled by checking ib_dma_map_single result: > [ 1455.345548] ------------[ cut here ]------------ > [ 1455.346863] WARNING: CPU: 3 PID: 3929 at /home/yanb/kernel/net-next/lib/dma-debug.c:1140 check_unmap+0x4e5/0x990() > [ 1455.349350] mlx4_core 0000:00:07.0: DMA-API: device driver failed to check map error[device address=0x000000007c9f2090] [size=2656 bytes] [mapped as single] > [ 1455.349350] Modules linked in: xprtrdma netconsole configfs nfsv3 nfs_acl ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm autofs4 auth_rpcgss oid_registry nfsv4 nfs fscache lockd sunrpc dm_mirror dm_region_hash dm_log microcode pcspkr mlx4_ib ib_sa ib_mad ib_core ib_addr mlx4_en ipv6 ptp pps_core vxlan mlx4_core virtio_balloon cirrus ttm drm_kms_helper drm sysimgblt sysfillrect syscopyarea i2c_piix4 i2c_core button ext3 jbd virtio_blk virtio_net virtio_pci virtio_ring virtio uhci_hcd ata_generic ata_piix libata > [ 1455.349350] CPU: 3 PID: 3929 Comm: mount.nfs Not tainted 3.15.0-rc1-dbg+ #13 > [ 1455.349350] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007 > [ 1455.349350] 0000000000000474 ffff880069dcf628 ffffffff8151c341 ffffffff817b69d8 > [ 1455.349350] ffff880069dcf678 ffff880069dcf668 ffffffff8105b5fc 0000000069dcf658 > [ 1455.349350] ffff880069dcf778 ffff88007b0c9f00 ffffffff8255ec40 0000000000000a60 > [ 1455.349350] Call Trace: > [ 1455.349350] [<ffffffff8151c341>] dump_stack+0x52/0x81 > [ 1455.349350] [<ffffffff8105b5fc>] warn_slowpath_common+0x8c/0xc0 > [ 1455.349350] [<ffffffff8105b6e6>] warn_slowpath_fmt+0x46/0x50 > [ 1455.349350] [<ffffffff812e6305>] check_unmap+0x4e5/0x990 > [ 1455.349350] [<ffffffff81521fb0>] ? _raw_spin_unlock_irq+0x30/0x60 > [ 1455.349350] [<ffffffff812e6a0a>] debug_dma_unmap_page+0x5a/0x60 > [ 1455.349350] [<ffffffffa0389583>] rpcrdma_deregister_internal+0xb3/0xd0 [xprtrdma] > [ 1455.349350] [<ffffffffa038a639>] rpcrdma_buffer_destroy+0x69/0x170 [xprtrdma] > [ 1455.349350] [<ffffffffa03872ff>] xprt_rdma_destroy+0x3f/0xb0 [xprtrdma] > [ 1455.349350] [<ffffffffa04a95ff>] xprt_destroy+0x6f/0x80 [sunrpc] > [ 1455.349350] [<ffffffffa04a9625>] xprt_put+0x15/0x20 [sunrpc] > [ 1455.349350] [<ffffffffa04a899a>] rpc_free_client+0x8a/0xe0 [sunrpc] > [ 1455.349350] [<ffffffffa04a8a58>] rpc_release_client+0x68/0xa0 [sunrpc] > [ 1455.349350] [<ffffffffa04a9060>] rpc_shutdown_client+0xb0/0xc0 [sunrpc] > [ 1455.349350] [<ffffffffa04a8f5d>] ? rpc_ping+0x5d/0x70 [sunrpc] > [ 1455.349350] [<ffffffffa04a91ab>] rpc_create_xprt+0xbb/0xd0 [sunrpc] > [ 1455.349350] [<ffffffffa04a9273>] rpc_create+0xb3/0x160 [sunrpc] > [ 1455.349350] [<ffffffff81129749>] ? __probe_kernel_read+0x69/0xb0 > [ 1455.349350] [<ffffffffa053851c>] nfs_create_rpc_client+0xdc/0x100 [nfs] > [ 1455.349350] [<ffffffffa0538cfa>] nfs_init_client+0x3a/0x90 [nfs] > [ 1455.349350] [<ffffffffa05391c8>] nfs_get_client+0x478/0x5b0 [nfs] > [ 1455.349350] [<ffffffffa0538e50>] ? nfs_get_client+0x100/0x5b0 [nfs] > [ 1455.349350] [<ffffffff81172c6d>] ? kmem_cache_alloc_trace+0x24d/0x260 > [ 1455.349350] [<ffffffffa05393f3>] nfs_create_server+0xf3/0x4c0 [nfs] > [ 1455.349350] [<ffffffffa0545ff0>] ? nfs_request_mount+0xf0/0x1a0 [nfs] > [ 1455.349350] [<ffffffffa031c0c3>] nfs3_create_server+0x13/0x30 [nfsv3] > [ 1455.349350] [<ffffffffa0546293>] nfs_try_mount+0x1f3/0x230 [nfs] > [ 1455.349350] [<ffffffff8108ea21>] ? get_parent_ip+0x11/0x50 > [ 1455.349350] [<ffffffff812d6343>] ? __this_cpu_preempt_check+0x13/0x20 > [ 1455.349350] [<ffffffff810d632b>] ? try_module_get+0x6b/0x190 > [ 1455.349350] [<ffffffffa05449f7>] nfs_fs_mount+0x187/0x9d0 [nfs] > [ 1455.349350] [<ffffffffa0545940>] ? nfs_clone_super+0x140/0x140 [nfs] > [ 1455.349350] [<ffffffffa0543b20>] ? nfs_auth_info_match+0x40/0x40 [nfs] > [ 1455.349350] [<ffffffff8117e360>] mount_fs+0x20/0xe0 > [ 1455.349350] [<ffffffff811a1c16>] vfs_kern_mount+0x76/0x160 > [ 1455.349350] [<ffffffff811a29a8>] do_mount+0x428/0xae0 > [ 1455.349350] [<ffffffff811a30f0>] SyS_mount+0x90/0xe0 > [ 1455.349350] [<ffffffff8152af52>] system_call_fastpath+0x16/0x1b > [ 1455.349350] ---[ end trace f1f31572972e211d ]--- > > Signed-off-by: Yan Burman <yanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> Thanks Yan! I've applied this to a bugfixes branch that I'll push out later today. Chuck - Should I add your "Reviewed By" from v1 to this version of the patch? Anna > --- > > Changes from V1: > Removed curly braces > > net/sunrpc/xprtrdma/verbs.c | 3 +++ > 1 files changed, 3 insertions(+), 0 deletions(-) > > diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c > index 13dbd1c..176dafc 100644 > --- a/net/sunrpc/xprtrdma/verbs.c > +++ b/net/sunrpc/xprtrdma/verbs.c > @@ -1388,6 +1388,9 @@ rpcrdma_register_internal(struct rpcrdma_ia *ia, void *va, int len, > */ > iov->addr = ib_dma_map_single(ia->ri_id->device, > va, len, DMA_BIDIRECTIONAL); > + if (ib_dma_mapping_error(ia->ri_id->device, iov->addr)) > + return -ENOMEM; > + > iov->length = len; > > if (ia->ri_have_dma_lkey) { -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 3+ messages in thread
[parent not found: <53A9818D.40800-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]
* Re: [PATCH V2] xprtrdma: Fix DMA-API-DEBUG warning by checking dma_map result [not found] ` <53A9818D.40800-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> @ 2014-06-24 14:08 ` Chuck Lever 0 siblings, 0 replies; 3+ messages in thread From: Chuck Lever @ 2014-06-24 14:08 UTC (permalink / raw) To: Anna Schumaker Cc: Yan Burman, Linux NFS Mailing List, linux-rdma-u79uwXL29TY76Z2rM5mHXA On Jun 24, 2014, at 9:47 AM, Anna Schumaker <schumaker.anna-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote: > On 06/19/2014 09:06 AM, Yan Burman wrote: >> Fix the following warning when DMA-API debug is enabled by checking ib_dma_map_single result: >> [ 1455.345548] ------------[ cut here ]------------ >> [ 1455.346863] WARNING: CPU: 3 PID: 3929 at /home/yanb/kernel/net-next/lib/dma-debug.c:1140 check_unmap+0x4e5/0x990() >> [ 1455.349350] mlx4_core 0000:00:07.0: DMA-API: device driver failed to check map error[device address=0x000000007c9f2090] [size=2656 bytes] [mapped as single] >> [ 1455.349350] Modules linked in: xprtrdma netconsole configfs nfsv3 nfs_acl ib_ipoib rdma_ucm ib_ucm ib_uverbs ib_umad rdma_cm ib_cm iw_cm autofs4 auth_rpcgss oid_registry nfsv4 nfs fscache lockd sunrpc dm_mirror dm_region_hash dm_log microcode pcspkr mlx4_ib ib_sa ib_mad ib_core ib_addr mlx4_en ipv6 ptp pps_core vxlan mlx4_core virtio_balloon cirrus ttm drm_kms_helper drm sysimgblt sysfillrect syscopyarea i2c_piix4 i2c_core button ext3 jbd virtio_blk virtio_net virtio_pci virtio_ring virtio uhci_hcd ata_generic ata_piix libata >> [ 1455.349350] CPU: 3 PID: 3929 Comm: mount.nfs Not tainted 3.15.0-rc1-dbg+ #13 >> [ 1455.349350] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007 >> [ 1455.349350] 0000000000000474 ffff880069dcf628 ffffffff8151c341 ffffffff817b69d8 >> [ 1455.349350] ffff880069dcf678 ffff880069dcf668 ffffffff8105b5fc 0000000069dcf658 >> [ 1455.349350] ffff880069dcf778 ffff88007b0c9f00 ffffffff8255ec40 0000000000000a60 >> [ 1455.349350] Call Trace: >> [ 1455.349350] [<ffffffff8151c341>] dump_stack+0x52/0x81 >> [ 1455.349350] [<ffffffff8105b5fc>] warn_slowpath_common+0x8c/0xc0 >> [ 1455.349350] [<ffffffff8105b6e6>] warn_slowpath_fmt+0x46/0x50 >> [ 1455.349350] [<ffffffff812e6305>] check_unmap+0x4e5/0x990 >> [ 1455.349350] [<ffffffff81521fb0>] ? _raw_spin_unlock_irq+0x30/0x60 >> [ 1455.349350] [<ffffffff812e6a0a>] debug_dma_unmap_page+0x5a/0x60 >> [ 1455.349350] [<ffffffffa0389583>] rpcrdma_deregister_internal+0xb3/0xd0 [xprtrdma] >> [ 1455.349350] [<ffffffffa038a639>] rpcrdma_buffer_destroy+0x69/0x170 [xprtrdma] >> [ 1455.349350] [<ffffffffa03872ff>] xprt_rdma_destroy+0x3f/0xb0 [xprtrdma] >> [ 1455.349350] [<ffffffffa04a95ff>] xprt_destroy+0x6f/0x80 [sunrpc] >> [ 1455.349350] [<ffffffffa04a9625>] xprt_put+0x15/0x20 [sunrpc] >> [ 1455.349350] [<ffffffffa04a899a>] rpc_free_client+0x8a/0xe0 [sunrpc] >> [ 1455.349350] [<ffffffffa04a8a58>] rpc_release_client+0x68/0xa0 [sunrpc] >> [ 1455.349350] [<ffffffffa04a9060>] rpc_shutdown_client+0xb0/0xc0 [sunrpc] >> [ 1455.349350] [<ffffffffa04a8f5d>] ? rpc_ping+0x5d/0x70 [sunrpc] >> [ 1455.349350] [<ffffffffa04a91ab>] rpc_create_xprt+0xbb/0xd0 [sunrpc] >> [ 1455.349350] [<ffffffffa04a9273>] rpc_create+0xb3/0x160 [sunrpc] >> [ 1455.349350] [<ffffffff81129749>] ? __probe_kernel_read+0x69/0xb0 >> [ 1455.349350] [<ffffffffa053851c>] nfs_create_rpc_client+0xdc/0x100 [nfs] >> [ 1455.349350] [<ffffffffa0538cfa>] nfs_init_client+0x3a/0x90 [nfs] >> [ 1455.349350] [<ffffffffa05391c8>] nfs_get_client+0x478/0x5b0 [nfs] >> [ 1455.349350] [<ffffffffa0538e50>] ? nfs_get_client+0x100/0x5b0 [nfs] >> [ 1455.349350] [<ffffffff81172c6d>] ? kmem_cache_alloc_trace+0x24d/0x260 >> [ 1455.349350] [<ffffffffa05393f3>] nfs_create_server+0xf3/0x4c0 [nfs] >> [ 1455.349350] [<ffffffffa0545ff0>] ? nfs_request_mount+0xf0/0x1a0 [nfs] >> [ 1455.349350] [<ffffffffa031c0c3>] nfs3_create_server+0x13/0x30 [nfsv3] >> [ 1455.349350] [<ffffffffa0546293>] nfs_try_mount+0x1f3/0x230 [nfs] >> [ 1455.349350] [<ffffffff8108ea21>] ? get_parent_ip+0x11/0x50 >> [ 1455.349350] [<ffffffff812d6343>] ? __this_cpu_preempt_check+0x13/0x20 >> [ 1455.349350] [<ffffffff810d632b>] ? try_module_get+0x6b/0x190 >> [ 1455.349350] [<ffffffffa05449f7>] nfs_fs_mount+0x187/0x9d0 [nfs] >> [ 1455.349350] [<ffffffffa0545940>] ? nfs_clone_super+0x140/0x140 [nfs] >> [ 1455.349350] [<ffffffffa0543b20>] ? nfs_auth_info_match+0x40/0x40 [nfs] >> [ 1455.349350] [<ffffffff8117e360>] mount_fs+0x20/0xe0 >> [ 1455.349350] [<ffffffff811a1c16>] vfs_kern_mount+0x76/0x160 >> [ 1455.349350] [<ffffffff811a29a8>] do_mount+0x428/0xae0 >> [ 1455.349350] [<ffffffff811a30f0>] SyS_mount+0x90/0xe0 >> [ 1455.349350] [<ffffffff8152af52>] system_call_fastpath+0x16/0x1b >> [ 1455.349350] ---[ end trace f1f31572972e211d ]--- >> >> Signed-off-by: Yan Burman <yanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> > > Thanks Yan! I've applied this to a bugfixes branch that I'll push out later today. > > Chuck - Should I add your "Reviewed By" from v1 to this version of the patch? Yes, thanks! > > Anna > >> --- >> >> Changes from V1: >> Removed curly braces >> >> net/sunrpc/xprtrdma/verbs.c | 3 +++ >> 1 files changed, 3 insertions(+), 0 deletions(-) >> >> diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c >> index 13dbd1c..176dafc 100644 >> --- a/net/sunrpc/xprtrdma/verbs.c >> +++ b/net/sunrpc/xprtrdma/verbs.c >> @@ -1388,6 +1388,9 @@ rpcrdma_register_internal(struct rpcrdma_ia *ia, void *va, int len, >> */ >> iov->addr = ib_dma_map_single(ia->ri_id->device, >> va, len, DMA_BIDIRECTIONAL); >> + if (ib_dma_mapping_error(ia->ri_id->device, iov->addr)) >> + return -ENOMEM; >> + >> iov->length = len; >> >> if (ia->ri_have_dma_lkey) { > -- Chuck Lever chuck[dot]lever[at]oracle[dot]com -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2014-06-24 14:08 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-06-19 13:06 [PATCH V2] xprtrdma: Fix DMA-API-DEBUG warning by checking dma_map result Yan Burman
[not found] ` <1403183190-21607-1-git-send-email-yanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-06-24 13:47 ` Anna Schumaker
[not found] ` <53A9818D.40800-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2014-06-24 14:08 ` Chuck Lever
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox