When device has been bound to igb_uio driver and application is running,
hot-unplugging the device may cause kernel crash.
Signed-off-by: Jeff Guo <jia....@intel.com>
---
doc/guides/rel_notes/known_issues.rst | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/doc/guides/rel_notes/known_issues.rst
b/doc/guides/rel_notes/known_issues.rst
index 95e4ce6..dfe0565 100644
--- a/doc/guides/rel_notes/known_issues.rst
+++ b/doc/guides/rel_notes/known_issues.rst
@@ -759,3 +759,24 @@ Netvsc driver and application restart
**Driver/Module**:
``uio_hv_generic`` module.
+
+
+kernel crash when hot-unplug igb_uio device while DPDK application is running
+-----------------------------------------------------------------------------
+
+**Description**:
+ When device has been bound to igb_uio driver and application is running,
hot-unplugging
+ the device may cause kernel crash.
+
+**Reason**:
+ When device is hot-unplugged, igb_uio driver will be removed which will
destroy uio resources.
+ Later trying to access any uio resource will cause kernel crash.
+
+**Resolution/Workaround**:
+ If using DPDK for PCI HW hot-unplug, prefer to bind device with VFIO
instead of IGB_UIO.
+
+**Affected Environment/Platform**:
+ ALL.
+
+**Driver/Module**:
+ ``igb_uio`` module.
--
2.7.4
