This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- groovy' to 'verification-done-groovy'. If the problem still exists, change the tag 'verification-needed-groovy' to 'verification-failed- groovy'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-groovy -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.6 in Ubuntu. https://bugs.launchpad.net/bugs/1906851 Title: Fix reading speed and duplex sysfs on igc device Status in HWE Next: New Status in linux package in Ubuntu: Incomplete Status in linux-oem-5.10 package in Ubuntu: Invalid Status in linux-oem-5.6 package in Ubuntu: Invalid Status in linux source package in Focal: Fix Committed Status in linux-oem-5.10 source package in Focal: Fix Released Status in linux-oem-5.6 source package in Focal: Confirmed Status in linux source package in Groovy: Fix Committed Status in linux-oem-5.10 source package in Groovy: Won't Fix Status in linux-oem-5.6 source package in Groovy: Won't Fix Bug description: [Impact] Reading speed and duplex sysfs on igc device when it's runtime suspended will make it stops working. Even kernel panic sometimes. [Fix] If igc device is runtime suspended, it means link isn't up, so we can just report speed as -1 and duplex as unknown. [Test] $ cat /sys/class/net/*/speed Then we'll see: [ 123.449883] igc 0000:03:00.0 enp3s0: PCIe link lost, device now detached [ 123.450052] BUG: kernel NULL pointer dereference, address: 0000000000000008 With the fix applied, $ cat /sys/class/net/*/speed -1 [Where problems could occur] Not at all. Reading register when device is runtime suspended is just wrong. The fix prevents it from happening. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1906851/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
