Public bug reported:
I usually run kvm with '-serial stdio' after adding
GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0" to /etc/default/grub. This
will give me a serial console where I can login and, more important, get
kernel logs.
After install 4.8.0-16.17 I'm unable to login in the serial console, and
I'm getting a lot of messages:
genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080
(goldfish_pdev_bus)
System seems to be working fine otherwise.
4.8.0-15.16 didn't show this behaviour.
The obvious suspect commits are the "SAUCE: irqchip/gicv3-its:*" in -16,
although the several config changes may also be involved.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Affects: linux (Ubuntu Yakkety)
Importance: Undecided
Status: Confirmed
** Tags: kernel-4.8
** Attachment added: "dmesg.log"
https://bugs.launchpad.net/bugs/1627052/+attachment/4747102/+files/dmesg.log
** Also affects: linux (Ubuntu Yakkety)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1627052
Title:
4.8.0-16.17: genirq: Flags mismatch serial vs goldfish_pdev_bus
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