https://bugs.dpdk.org/show_bug.cgi?id=703
Bug ID: 703
Summary: [21.05]Host testpmd crash when booting VM with
vhost-user 2 queues + viommu
Product: DPDK
Version: unspecified
Hardware: x86
OS: Linux
Status: UNCONFIRMED
Severity: major
Priority: Normal
Component: testpmd
Assignee: dev@dpdk.org
Reporter: pezh...@redhat.com
Target Milestone: ---
Versions:
OS:RHEl8
DPDK:
git://dpdk.org/dpdk
# git log -1
commit 47a0c2e11712fc5286d6a197d549817ae8f8f50e (HEAD -> main, tag: v21.05-rc2)
Author: Thomas Monjalon <tho...@monjalon.net>
Date: Thu May 6 00:31:24 2021 +0200
version: 21.05-rc2
Signed-off-by: Thomas Monjalon <tho...@monjalon.net>
kernel:4.18
qemu:5.2
Steps:
1. In host, boot testpmd with vhost-user 2q and iommu enabled.
/usr/local/bin/dpdk-testpmd \
-l 2,4,6,8,10 \
--socket-mem 1024,1024 \
-n 4 \
--vdev
net_vhost0,iface=/tmp/vhostuser0.sock,queues=2,client=1,iommu-support=1 \
-b 0000:3b:00.0 -b 0000:3b:00.1 \
-- \
--portmask=3 \
-i \
--rxd=512 --txd=512 \
--rxq=2 --txq=2 \
--nb-cores=4 \
--forward-mode=io
2. Boot VM with vhost-user 2q and iommu.
<interface type="vhostuser">
<mac address="18:66:da:5f:dd:02" />
<source mode="server" path="/tmp/vhostuser0.sock" type="unix" />
<model type="virtio" />
<driver ats="on" iommu="on" name="vhost" queues="2" rx_queue_size="1024"
/>
<address bus="0x6" domain="0x0000" function="0x0" slot="0x00" type="pci"
/>
</interface>
3. Testpmd crashed after several seconds
EAL: Detected 32 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'VA'
EAL: No available 2048 kB hugepages reported
EAL: VFIO support initialized
EAL: Using IOMMU type 1 (Type 1)
EAL: Probe PCI driver: net_ixgbe (8086:1528) device: 0000:5e:00.0 (socket 0)
TELEMETRY: No legacy callbacks, legacy socket not created
Interactive-mode selected
Set io packet forwarding mode
Failed to set MTU to 1500 for port 1
testpmd: create a new mbuf pool <mb_pool_0>: n=179456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc
Configuring Port 0 (socket 0)
Port 0: B4:96:91:14:22:C4
Configuring Port 1 (socket 0)
VHOST_CONFIG: vhost-user client: socket created, fd: 39
VHOST_CONFIG: failed to connect to /tmp/vhostuser0.sock: No such file or
directory
VHOST_CONFIG: /tmp/vhostuser0.sock: reconnecting...
Port 1: 56:48:4F:53:54:01
Checking link statuses...
Done
testpmd>
Port 0: link state change event
VHOST_CONFIG: /tmp/vhostuser0.sock: connected
VHOST_CONFIG: new device, handle is 0
VHOST_CONFIG: read message VHOST_USER_GET_FEATURES
VHOST_CONFIG: read message VHOST_USER_GET_PROTOCOL_FEATURES
VHOST_CONFIG: read message VHOST_USER_SET_PROTOCOL_FEATURES
VHOST_CONFIG: negotiated Vhost-user protocol features: 0xcbf
VHOST_CONFIG: read message VHOST_USER_GET_QUEUE_NUM
VHOST_CONFIG: read message VHOST_USER_SET_SLAVE_REQ_FD
VHOST_CONFIG: read message VHOST_USER_SET_OWNER
VHOST_CONFIG: read message VHOST_USER_GET_FEATURES
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:0 file:44
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:1 file:45
VHOST_CONFIG: read message VHOST_USER_GET_FEATURES
VHOST_CONFIG: read message VHOST_USER_GET_PROTOCOL_FEATURES
VHOST_CONFIG: read message VHOST_USER_SET_PROTOCOL_FEATURES
VHOST_CONFIG: negotiated Vhost-user protocol features: 0xcbf
VHOST_CONFIG: read message VHOST_USER_GET_FEATURES
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:2 file:46
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:3 file:47
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 1 to qp idx: 0
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 1 to qp idx: 1
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 0 to qp idx: 2
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 0 to qp idx: 3
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 1 to qp idx: 0
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 1 to qp idx: 1
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 0 to qp idx: 2
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ENABLE
VHOST_CONFIG: set queue enable: 0 to qp idx: 3
VHOST_CONFIG: read message VHOST_USER_SET_FEATURES
VHOST_CONFIG: negotiated Virtio features: 0x37060ff83
VHOST_CONFIG: read message VHOST_USER_SET_MEM_TABLE
VHOST_CONFIG: guest memory region size: 0x80000000
guest physical addr: 0x0
guest virtual addr: 0x7f5800000000
host virtual addr: 0x7f28c0000000
mmap addr : 0x7f28c0000000
mmap size : 0x80000000
mmap align: 0x40000000
mmap off : 0x0
VHOST_CONFIG: guest memory region size: 0x180000000
guest physical addr: 0x100000000
guest virtual addr: 0x7f5880000000
host virtual addr: 0x7f2740000000
mmap addr : 0x7f26c0000000
mmap size : 0x200000000
mmap align: 0x40000000
mmap off : 0x80000000
VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
VHOST_CONFIG: read message VHOST_USER_SET_VRING_KICK
VHOST_CONFIG: vring kick idx:0 file:50
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:0 file:51
VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
VHOST_CONFIG: read message VHOST_USER_SET_VRING_KICK
VHOST_CONFIG: vring kick idx:1 file:44
VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
VHOST_CONFIG: vring call idx:1 file:52
pvp_2q.sh: line 13: 22354 Segmentation fault (core dumped)
/usr/local/bin/dpdk-testpmd -l 2,4,6,8,10 --socket-mem 1024,1024 -n 4 --vdev
net_vhost0,iface=/tmp/vhostuser0.sock,queues=2,client=1,iommu-support=1 -b
0000:3b:00.0 -b 0000:3b:00.1 -- --portmask=3 -i --rxd=512 --txd=512 --rxq=2
--txq=2 --nb-cores=4 --forward-mode=io
# dmesg
...
[ 7114.427665] vhost-events[22363]: segfault at 44 ip 00000000009d01f5 sp
00007f2957f18f80 error 4 in dpdk-testpmd[400000+f53000]
[ 7114.439051] Code: 55 44 89 c5 53 48 89 fb 48 83 ec 48 4c 8b 6f 60 48 89 74
24 08 48 89 54 24 10 64 48 8b 04 25 00 00 00 00 48 03 05 c3 a9 ba 00 <41> 8b 4d
44 8b 00 85 c9 0f 84 2d 01 00 00 83 f8 7f 0f 87 24 01 00
Other informations:
1. vhost-user single queue + viommu works well
2. vhost-user 2 queues + without viommu work well
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