4.8.0-16.17: genirq: Flags mismatch serial vs goldfish_pdev_bus

[Luis Henriques]

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.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Luis Henriques (henrix)]

Just for completeness, running a kernel compiled with CONFIG_GOLDFISH=n fixed the issue.

[Martin Pitt (pitti)]

This seems to break instance boots on scalingstack i386 and amd64 completely. I get thousands of these messages in console-log, and it never actually boots up. This breaks all autopkgtesting.

[Martin Pitt (pitti)]

I confirm that 4.8.0-17 in the PPA boots on Scalingstack instances again. Thanks!

[Martin Pitt (pitti)]

This bug also trivially reproduces in local QEMU, so can easily be tested locally as well. So thankfully this doesn't seem to be some Scalingstack quirk.

[Robert C Jennings (rcj)]

Adding cloud-images as they use scalingstack for pre-publication testing. Failure in that env blocks publication for yakkety cloud-images (as it should).

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 4.8.0-17.19

---------------
linux (4.8.0-17.19) yakkety; urgency=low

  * build squashfs into xenial kernels by default (LP: #1593134)
    - Remove squashfs udeb

  * [Yakkety] Fix up ATA_GENERIC to match annotations file. (LP: #1627322)
    - Add d-i support for ata_generic

  * [Yakkety] Fix up CONFIG_BLK_DEV_SD to match annotations (LP: #1627330)
    - [Config] Enforce CONFIG_BLK_DEV_SD=y,CONFIG_BLK_DEV_SR=y

  * [Yakkety] Fix up ATA_PIIX to match annotations file (LP: #1627324)
    - [Config] Enforce CONFIG_ATA_PIIX=y for amd64/i386

  * Yakkety - USB drivers must be built in (LP: #1627323)
    - Update annotation enforcement for CONFIG_USB_[E|O|U|X]HCI_HCD

  * 4.8.0-16.17: genirq: Flags mismatch serial vs goldfish_pdev_bus
    (LP: #1627052)
    - [Config] CONFIG_GOLDFISH=n

  * yakkety 4.8, remove module noise kernel-4.8 (LP: #1626104)
    - Revert "UBUNTU: SAUCE: Clear Linux: bootstats: add printk's to measure boot
      time in more detail"

  * Permission denied in CIFS with kernel 4.4.0-38 (LP: #1626112)
    - SAUCE: Fix regression which breaks DFS mounting

  * Miscellaneous Ubuntu changes
    - [Config] apply xenial configuration annotations
    - s390x -- DEBUG_RODATA is now valid
    - [Config] s390x -- CONFIG_SQUASHFS=y
    - [Config] s390x -- CONFIG_ECRYPT_FS=y
    - [Config] Enable CONFIG_ACPI_PCI_SLOT=y for arm64
    - [Config] Enable CONFIG_ACPI_HED=y for arm64
    - [Config] Enable CONFIG_QUICC_ENGINE=y

  * Miscellaneous upstream changes
    - annotations: pull back to xenial

 -- Leann Ogasawara <email address hidden> Sat, 24 Sep 2016 21:31:31 -0700

[Robert C Jennings (rcj)]

Fixed in cloud-images build 20160927