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authorXuan Zhuo <xuanzhuo@linux.alibaba.com>2023-12-01 06:33:03 +0300
committerMichael S. Tsirkin <mst@redhat.com>2023-12-04 16:36:25 +0300
commit1f475cd572ea77ae6474a17e693a96bca927efe9 (patch)
tree9e21fefb58e5195d5e6a7ae608f544595a032ff5 /drivers/virtio
parentcefc9ba6aed48a3aa085888e3262ac2aa975714b (diff)
downloadlinux-1f475cd572ea77ae6474a17e693a96bca927efe9.tar.xz
virtio_ring: fix syncs DMA memory with different direction
Now the APIs virtqueue_dma_sync_single_range_for_{cpu,device} ignore the parameter 'dir', that is a mistake. [ 6.101666] ------------[ cut here ]------------ [ 6.102079] DMA-API: virtio-pci 0000:00:04.0: device driver syncs DMA memory with different direction [device address=0x00000000ae010000] [size=32752 bytes] [mapped with DMA_FROM_DEVICE] [synced with DMA_BIDIRECTIONAL] [ 6.103630] WARNING: CPU: 6 PID: 0 at kernel/dma/debug.c:1125 check_sync+0x53e/0x6c0 [ 6.107420] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G E 6.6.0+ #290 [ 6.108030] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014 [ 6.108936] RIP: 0010:check_sync+0x53e/0x6c0 [ 6.109289] Code: 24 10 e8 f5 d9 74 00 4c 8b 4c 24 10 4c 8b 44 24 18 48 8b 4c 24 20 48 89 c6 41 56 4c 89 ea 48 c7 c7 b0 f1 50 82 e8 32 fc f3 ff <0f> 0b 48 c7 c7 48 4b 4a 82 e8 74 d9 fc ff 8b 73 4c 48 8d 7b 50 31 [ 6.110750] RSP: 0018:ffffc90000180cd8 EFLAGS: 00010092 [ 6.111178] RAX: 00000000000000ce RBX: ffff888100aa5900 RCX: 0000000000000000 [ 6.111744] RDX: 0000000000000104 RSI: ffffffff824c3208 RDI: 00000000ffffffff [ 6.112316] RBP: ffffc90000180d40 R08: 0000000000000000 R09: 00000000fffeffff [ 6.112893] R10: ffffc90000180b98 R11: ffffffff82f63308 R12: ffffffff83d5af00 [ 6.113460] R13: ffff888100998200 R14: ffffffff824a4b5f R15: 0000000000000286 [ 6.114027] FS: 0000000000000000(0000) GS:ffff88842fd80000(0000) knlGS:0000000000000000 [ 6.114665] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.115128] CR2: 00007f10f1e03030 CR3: 0000000108272004 CR4: 0000000000770ee0 [ 6.115701] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 6.116272] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 6.116842] PKRU: 55555554 [ 6.117069] Call Trace: [ 6.117275] <IRQ> [ 6.117452] ? __warn+0x84/0x140 [ 6.117727] ? check_sync+0x53e/0x6c0 [ 6.118034] ? __report_bug+0xea/0x100 [ 6.118353] ? check_sync+0x53e/0x6c0 [ 6.118653] ? report_bug+0x41/0xc0 [ 6.118944] ? handle_bug+0x3c/0x70 [ 6.119237] ? exc_invalid_op+0x18/0x70 [ 6.119551] ? asm_exc_invalid_op+0x1a/0x20 [ 6.119900] ? check_sync+0x53e/0x6c0 [ 6.120199] ? check_sync+0x53e/0x6c0 [ 6.120499] debug_dma_sync_single_for_cpu+0x5c/0x70 [ 6.120906] ? dma_sync_single_for_cpu+0xb7/0x100 [ 6.121291] virtnet_rq_unmap+0x158/0x170 [virtio_net] [ 6.121716] virtnet_receive+0x196/0x220 [virtio_net] [ 6.122135] virtnet_poll+0x48/0x1b0 [virtio_net] [ 6.122524] __napi_poll+0x29/0x1b0 [ 6.123083] net_rx_action+0x282/0x360 [ 6.123612] __do_softirq+0xf3/0x2fb [ 6.124138] __irq_exit_rcu+0x8e/0xf0 [ 6.124663] common_interrupt+0xbc/0xe0 [ 6.125202] </IRQ> We need to enable CONFIG_DMA_API_DEBUG and work with need sync mode(such as swiotlb) to reproduce this warn. Fixes: 8bd2f71054bd ("virtio_ring: introduce dma sync api for virtqueue") Reported-by: "Ning, Hongyu" <hongyu.ning@linux.intel.com> Closes: https://lore.kernel.org/all/f37cb55a-6fc8-4e21-8789-46d468325eea@linux.intel.com/ Suggested-by: Jason Wang <jasowang@redhat.com> Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Message-Id: <20231201033303.25141-1-xuanzhuo@linux.alibaba.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Parav Pandit <parav@nvidia.com> Acked-by: Jason Wang <jasowang@redhat.com> Tested-by: Hongyu Ning <hongyu.ning@linux.intel.com>
Diffstat (limited to 'drivers/virtio')
-rw-r--r--drivers/virtio/virtio_ring.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 51d8f3299c10..49299b1f9ec7 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -3219,8 +3219,7 @@ void virtqueue_dma_sync_single_range_for_cpu(struct virtqueue *_vq,
if (!vq->use_dma_api)
return;
- dma_sync_single_range_for_cpu(dev, addr, offset, size,
- DMA_BIDIRECTIONAL);
+ dma_sync_single_range_for_cpu(dev, addr, offset, size, dir);
}
EXPORT_SYMBOL_GPL(virtqueue_dma_sync_single_range_for_cpu);
@@ -3246,8 +3245,7 @@ void virtqueue_dma_sync_single_range_for_device(struct virtqueue *_vq,
if (!vq->use_dma_api)
return;
- dma_sync_single_range_for_device(dev, addr, offset, size,
- DMA_BIDIRECTIONAL);
+ dma_sync_single_range_for_device(dev, addr, offset, size, dir);
}
EXPORT_SYMBOL_GPL(virtqueue_dma_sync_single_range_for_device);