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From: Mingjin Ye <mingjinx.ye@intel.com>
To: dev@dpdk.org
Cc: qiming.yang@intel.com, stable@dpdk.org, yidingx.zhou@intel.com,
	Mingjin Ye <mingjinx.ye@intel.com>,
	Wenjun Wu <wenjun1.wu@intel.com>
Subject: [PATCH v2] doc: add PMD known issue
Date: Sat,  6 May 2023 10:02:52 +0000	[thread overview]
Message-ID: <20230506100252.215680-1-mingjinx.ye@intel.com> (raw)
In-Reply-To: <20230420061429.140113-1-mingjinx.ye@intel.com>

Add a known issue: The ixgbe_vf driver is not multi-process safe.

Signed-off-by: Mingjin Ye <mingjinx.ye@intel.com>
---
v2: Modify issue description reason.
---
 doc/guides/nics/ixgbe.rst | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/doc/guides/nics/ixgbe.rst b/doc/guides/nics/ixgbe.rst
index b1d77ab7ab..9fb3c39bf4 100644
--- a/doc/guides/nics/ixgbe.rst
+++ b/doc/guides/nics/ixgbe.rst
@@ -461,3 +461,18 @@ show bypass config
 Show the bypass configuration for a bypass enabled NIC using the lowest port on the NIC::
 
    testpmd> show bypass config (port_id)
+
+VF driver is not multi-process safe
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Core dump may occur when we start secondary processes on the VF port.
+Mainstream Linux distributions have the ASLR feature enabled by default,
+and the text segment of the process memory space is randomized.
+The secondary process calls the function address shared by the primary
+process, resulting in a core dump.
+
+   .. Note::
+
+          Support for ASLR features varies by distribution. Redhat and
+          Centos series distributions work fine. Ubuntu distributions
+          will core dump, other Linux distributions are unknown.
-- 
2.25.1


  parent reply	other threads:[~2023-05-06 10:09 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-20  6:14 [PATCH] " Mingjin Ye
2023-04-20 14:59 ` Stephen Hemminger
2023-04-20 15:22 ` Bruce Richardson
2023-05-06 10:02 ` Mingjin Ye [this message]
2023-05-15  5:56   ` [PATCH v2] " Zhang, Qi Z
2023-05-16 10:22   ` [PATCH v3] doc: comment VF does not support multi-process Mingjin Ye
2023-05-16 15:18     ` Stephen Hemminger
2023-05-17  2:29       ` Ye, MingjinX
2023-05-17 10:03     ` [PATCH v4] doc: update ixgbe VF features list Mingjin Ye
2023-05-18  8:25       ` Zhang, Qi Z

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