This bug was fixed in the package linux - 4.8.0-16.17
---------------
linux (4.8.0-16.17) yakkety; urgency=low
[ Tim Gardner ]
* Release Tracking Bug
- LP: #1626768
* Support ARM GIC ITS in ACPI mode (LP: #1626631)
- [Config] CONFIG_ACPI_IORT=y
- SAUCE: ACPI: I/O Remapping Table (IORT) initial support
- SAUCE: ACPI: Add new IORT functions to support MSI domain handling
- SAUCE: irqchip/gicv3-its: Cleanup for ITS domain initialization
- SAUCE: irqchip/gicv3-its: Refactor ITS DT init code to prepare for ACPI
- SAUCE: irqchip/gicv3-its: Probe ITS in the ACPI way
- SAUCE: irqchip/gicv3-its: Factor out PCI-MSI part that might be reused
for ACPI
- SAUCE: irqchip/gicv3-its: Use MADT ITS subtable to do PCI/MSI domain
initialization
- SAUCE: PCI/MSI: Setup MSI domain on a per-device basis using IORT ACPI
table
* 4.8 dropped CONFIG_ATA=y (breaks systemd's TEST-08-ISSUE-2730 upstream test)
(LP: #1626394)
- [Config] CONFIG_ATA=y
* Yakkety: Enable drivers with respect to Xenial (LP: #1626543)
- [Config] CONFIG_VMD=m
- [Config] CONFIG_MAC80211_RC_MINSTREL_VHT=y for all arches
- [Config] CONFIG_OF=y for all arches
- [Config] CONFIG_BLK_DEV_NVME_SCSI=y
- [Config] Xenial device settings sync with amd64
- [Config] Xenial device settings sync with i386
- [Config] CONFIG_MTD_UBI_GLUEBI=m
- [Config] Xenial device settings sync with armhf
- [Config] Xenial device settings sync with arm64
* yakkety 4.8, missing config CONFIG_USERFAULTFD=y (LP: #1626149)
- [Config] CONFIG_USERFAULTFD=y
* 4.8 regression: SLAB is being used instead of SLUB (LP: #1626564)
- [Config] CONFIG_SLUB=y
* image won't boot after upgrading to yakkety's 4.8 kernel because efi
(LP: #1626158)
- add nls_cp437 to the generic.inclusion-list
-- Tim Gardner <tim.gard...@canonical.com> Thu, 22 Sep 2016 06:51:45
-0600
** Changed in: linux (Ubuntu Yakkety)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1626149
Title:
yakkety 4.8, missing config CONFIG_USERFAULTFD=y
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Yakkety:
Fix Released
Bug description:
The 4.4 kernel has CONFIG_USERFAULTFD=y set, however for Yakkety 4.8
it appears to be missing. This was picked up when running the stress-
ng userfault stress tests:
stress-ng --userfaultfd 1
stress-ng: info: [16383] defaulting to a 86400 second run per stressor
stress-ng: info: [16383] dispatching hogs: 1 userfaultfd
stress-ng: info: [16383] cache allocate: default cache size: 8192K
stress-ng: error: [16384] stress-ng-userfaultfd: userfaultfd failed, errno =
38 (Function not implemented)
stress-ng: error: [16383] process 16384 (stress-ng-userfaultfd) terminated
with an error, exit status=1
stress-ng: info: [16383] unsuccessful run completed in 0.00s
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