I could see this issue with same Call trace pasted above with ubuntu
20.04/20.10/21.04.
Had a look at relevant kernel code and found all of them disable only ASPM L1.1
rather than ASPM completely.Rebuilt the kernel by disabling whole ASPM feature
this NETDEV WATCHDOG call trace disappears.
code hacked was like below:
pci_disable_link_state(pdev, PCIE_LINK_STATE_L1_1);//issue appears
pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
PCIE_LINK_STATE_L1);//issue
disappears
I believe the experiment shows there is ASPM issue with r8169 driver.Can
anyone share your view on this problem which may shed some light on the
way forward.Is there a Realtek contact window we could reach out
ot.Thanks for anyone who can help.
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https://bugs.launchpad.net/bugs/1874464
Title:
NETDEV WATCHDOG: enp5s0 (r8169): transmit queue 0 timed out
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