|SUCCESS|dpdk|26b05e42e1| Intel-Testing
sys_stv at intel.com
sys_stv at intel.com
Mon Jun 29 12:22:16 CEST 2026
Test-Label: intel-Testing
Test-Status: SUCCESS
_Testing PASS_
DPDK git repo: dpdk
commit 26b05e42e19b50d132a922dbe04572722ea1d810
Author: Long Li <longli at microsoft.com>
Date: Tue Jun 23 17:05:31 2026 -0700
dev: report devargs truncation for multi-process hotplug
The EAL hotplug multi-process messaging uses a fixed-size buffer
(EAL_DEV_MP_DEV_ARGS_MAX_LEN, 128 bytes) for device arguments.
When devargs exceeds this limit, strlcpy silently truncates the
string. This causes secondary processes to receive incomplete
devargs during hotplug re-add, leading to failed port
re-initialization.
For example, a MANA PCI device with 6 mac= arguments:
mac=AA:BB:CC:DD:EE:01,mac=AA:BB:CC:DD:EE:02,
mac=AA:BB:CC:DD:EE:03,mac=AA:BB:CC:DD:EE:04,
mac=AA:BB:CC:DD:EE:05,mac=AA:BB:CC:DD:EE:06
produces a 131-byte devargs string that gets silently truncated
to 127 bytes, losing the last MAC address.
Return -E2BIG from rte_dev_probe() when devargs would be truncated,
instead of silently corrupting data. rte_dev_remove() does not need
the same check because the length was already validated at probe time.
Fixes: 244d5130719c ("eal: enable hotplug on multi-process")
Cc: stable at dpdk.org
Signed-off-by: Long Li <longli at microsoft.com>
Acked-by: David Marchand <david.marchand at redhat.com>
Testing Summary : 18 Case Done, 18 Successful, 0 Failures
TestPlan:
pf_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/pf_smoke_test_plan.rst
vf_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/vf_smoke_test_plan.rst
virtio_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/virtio_smoke_test_plan.rst
TestSuite:
pf_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_pf_smoke.py
vf_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_vf_smoke.py
virtio_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_virtio_smoke.py
OS : Ubuntu 24.04.4 LTS
Kernel : 6.8.0-71-generic
GCC : 13.3.0-6ubuntu2~24.04.1
NIC : Ethernet Controller XL710 for 40GbE QSFP+
Target : x86_64-native-linuxapp-gcc
Test result details:
+-------------+---------------------------+-------+
| suite | case | status|
+-------------+---------------------------+-------+
| asan_smoke | test_rxtx_with_ASan_enable| passed|
| pf_smoke | test_pf_jumbo_frames | passed|
| pf_smoke | test_pf_rss | passed|
| pf_smoke | test_pf_tx_rx_queue | passed|
| vf_smoke | test_vf_rss | passed|
| vf_smoke | test_vf_tx_rx_queue | passed|
| vf_smoke | test_vf_jumbo_frames | n/a |
| virtio_smoke| test_virtio_loopback | passed|
| virtio_smoke| test_virtio_pvp | passed|
+-------------+---------------------------+-------+
OS : Ubuntu 24.04.4 LTS
Kernel : 6.8.0-87-generic
GCC : 13.3.0-6ubuntu2~24.04.1
NIC : Ethernet Controller E810-C for SFP
Target : x86_64-native-linuxapp-gcc
Test result details:
+-------------+---------------------------+-------+
| suite | case | status|
+-------------+---------------------------+-------+
| asan_smoke | test_rxtx_with_ASan_enable| passed|
| pf_smoke | test_pf_jumbo_frames | passed|
| pf_smoke | test_pf_rss | passed|
| pf_smoke | test_pf_tx_rx_queue | passed|
| vf_smoke | test_vf_jumbo_frames | passed|
| vf_smoke | test_vf_rss | passed|
| vf_smoke | test_vf_tx_rx_queue | passed|
| virtio_smoke| test_virtio_loopback | passed|
| virtio_smoke| test_virtio_pvp | passed|
+-------------+---------------------------+-------+
DPDK STV team
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