[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Po-Hsu Lin]

** Changed in: linux (Ubuntu)
   Status: Fix Committed => Fix Released

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 4.4.0-78.99

---
linux (4.4.0-78.99) xenial; urgency=low

  * linux: 4.4.0-78.99 -proposed tracker (LP: #1686645)

  * Please backport fix to reference leak in cgroup blkio throttle
(LP: #1683976)
- block: fix module reference leak on put_disk() call for cgroups throttle

  * UbuntuKVM guest crashed while running I/O stress test with Ubuntu kernel
4.4.0-47-generic (LP: #1659111)
- block: Unhash block device inodes on gendisk destruction
- block: Use pointer to backing_dev_info from request_queue
- block: Dynamically allocate and refcount backing_dev_info
- block: Make blk_get_backing_dev_info() safe without open bdev
- block: Get rid of blk_get_backing_dev_info()
- block: Move bdev_unhash_inode() after invalidate_partition()
- block: Unhash also block device inode for the whole device
- block: Revalidate i_bdev reference in bd_aquire()
- block: Initialize bd_bdi on inode initialization
- block: Move bdi_unregister() to del_gendisk()
- block: Allow bdi re-registration
- bdi: Fix use-after-free in wb_congested_put()
- block: Make del_gendisk() safer for disks without queues
- block: Fix bdi assignment to bdev inode when racing with disk delete
- bdi: Mark congested->bdi as internal
- bdi: Make wb->bdi a proper reference
- bdi: Unify bdi->wb_list handling for root wb_writeback
- bdi: Shutdown writeback on all cgwbs in cgwb_bdi_destroy()
- bdi: Do not wait for cgwbs release in bdi_unregister()
- bdi: Rename cgwb_bdi_destroy() to cgwb_bdi_unregister()
- block: Fix oops in locked_inode_to_wb_and_lock_list()
- kobject: Export kobject_get_unless_zero()
- block: Fix oops scsi_disk_get()

  * Touchpad not working correctly after kernel upgrade (LP: #1662589)
- Input: ALPS - fix V8+ protocol handling (73 03 28)

  * Xenial update to v4.4.62 stable release (LP: #1683728)
- drm/i915: Avoid tweaking evaluation thresholds on Baytrail v3
- drm/i915: Stop using RP_DOWN_EI on Baytrail
- usb: dwc3: gadget: delay unmap of bounced requests
- mtd: bcm47xxpart: fix parsing first block after aligned TRX
- MIPS: Introduce irq_stack
- MIPS: Stack unwinding while on IRQ stack
- MIPS: Only change $28 to thread_info if coming from user mode
- MIPS: Switch to the irq_stack in interrupts
- MIPS: Select HAVE_IRQ_EXIT_ON_IRQ_STACK
- MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch
- crypto: caam - fix RNG deinstantiation error checking
- Linux 4.4.62

  * ifup service of network device stay active after driver stop (LP: #1672144)
- net: use net->count to check whether a netns is alive or not

  * [Hyper-V] mkfs regression in kernel 4.4+ (LP: #1682215)
- block: relax check on sg gap

  * [Feature] KBL: intel_powerclamp driver support (LP: #1591641)
- thermal/powerclamp: remove cpu whitelist
- thermal/powerclamp: correct cpu support check
- thermal/powerclamp: add back module device table

  * sysfs channel reads of lps22hb pressure sensor are stale (LP: #1682103)
- iio: st_pressure: initialize lps22hb bootime

  * Backlight control does not work and there are no entries in
/sys/class/backlight (LP: #1667323)
- Revert "ACPI / video: Add force_native quirk for HP Pavilion dv6"

  * [Feature] KBL: intel_rapl driver support (LP: #1591640)
- powercap/intel_rapl: Add support for Kabylake

  * Xenial update to v4.4.61 stable release (LP: #1682140)
- drm/vmwgfx: Type-check lookups of fence objects
- drm/vmwgfx: NULL pointer dereference in vmw_surface_define_ioctl()
- drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl()
- drm/ttm, drm/vmwgfx: Relax permission checking when opening surfaces
- drm/vmwgfx: Remove getparam error message
- drm/vmwgfx: fix integer overflow in vmw_surface_define_ioctl()
- sysfs: be careful of error returns from ops->show()
- staging: android: ashmem: lseek failed due to no FMODE_LSEEK.
- arm/arm64: KVM: Take mmap_sem in stage2_unmap_vm
- arm/arm64: KVM: Take mmap_sem in kvm_arch_prepare_memory_region
- iio: bmg160: reset chip when probing
- Reset TreeId to zero on SMB2 TREE_CONNECT
- ptrace: fix PTRACE_LISTEN race corrupting task->state
- ring-buffer: Fix return value check in test_ringbuffer()
- metag/usercopy: Drop unused macros
- metag/usercopy: Fix alignment error checking
- metag/usercopy: Add early abort to copy_to_user
- metag/usercopy: Zero rest of buffer from copy_from_user
- metag/usercopy: Set flags before ADDZ
- metag/usercopy: Fix src fixup in from user rapf loops
- metag/usercopy: Add missing fixups
- powerpc/mm: Add missing global TLB invalidate if cxl is active
- powerpc: Don't try to fix up misaligned load-with-reservation instructions
- nios2: reserve boot memory for device tree
- s390/decompressor: fix initrd corruption caused by bss 

[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Launchpad Bug Tracker]

This bug was fixed in the package linux - 4.8.0-52.55

---
linux (4.8.0-52.55) yakkety; urgency=low

  * linux: 4.8.0-52.55 -proposed tracker (LP: #1686976)

  * CVE-2017-7477: macsec: avoid heap overflow in skb_to_sgvec (LP: #1685892)
- macsec: avoid heap overflow in skb_to_sgvec
- macsec: dynamically allocate space for sglist

  * net/ipv4: original ingress device index set as the loopback interface.
(LP: #1683982)
- net: fix incorrect original ingress device index in PKTINFO

  * Touchpad not working correctly after kernel upgrade (LP: #1662589)
- Input: ALPS - fix V8+ protocol handling (73 03 28)

  * ifup service of network device stay active after driver stop (LP: #1672144)
- net: use net->count to check whether a netns is alive or not

  * [Hyper-V] mkfs regression in kernel 4.4+ (LP: #1682215)
- block: relax check on sg gap

  * Potential memory corruption with capi adapters (LP: #1681469)
- powerpc/mm: Add missing global TLB invalidate if cxl is active

  * [Hyper-V/Azure] Please include Mellanox OFED drivers in Azure kernel and
image (LP: #1650058)
- net/mlx4_en: Fix bad WQE issue
- net/mlx4_core: Fix racy CQ (Completion Queue) free
- net/mlx4_core: Fix when to save some qp context flags for dynamic VST to 
VGT
  transitions
- net/mlx4_core: Avoid command timeouts during VF driver device shutdown

 -- Stefan Bader   Fri, 28 Apr 2017 12:17:12
+0200

** Changed in: linux (Ubuntu Yakkety)
   Status: Fix Committed => Fix Released

** CVE added: http://www.cve.mitre.org/cgi-
bin/cvename.cgi?name=2017-7477

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Stephen A. Zarkos]

Test case from comment #3 passed using the -proposed kernel for Xenial
and Yakkey.

** Tags removed: verification-needed-xenial verification-needed-yakkety
** Tags added: verification-done-xenial verification-done-yakkety

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Kleber Sacilotto de Souza]

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-
yakkety' to 'verification-done-yakkety'. If the problem still exists,
change the tag 'verification-needed-yakkety' to 'verification-failed-
yakkety'.

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!

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Kleber Sacilotto de Souza]

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-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verification-needed-xenial' to 'verification-failed-
xenial'.

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-xenial

** Tags added: verification-needed-yakkety

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
   Status: In Progress => Fix Committed

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Stefan Bader]

** Changed in: linux (Ubuntu Xenial)
   Status: In Progress => Fix Committed

** Changed in: linux (Ubuntu Yakkety)
   Status: In Progress => Fix Committed

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Joseph Salisbury]

SRU request submitted for Xenial and Yakkety:
https://lists.ubuntu.com/archives/kernel-team/2017-April/083605.html

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Title:
  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Stephen A. Zarkos]

Hi,

The test looks good, here are my repro steps:

 1) Create an Ubuntu 16.04 VM in Azure
 2) Attach 128GB data disk
 3) Partition and format the disk
# wipefs --all /dev/sdc
# sgdisk -Z /dev/sdc
# sgdisk -n '1:2048::264191' /dev/sdc
# mkfs.ext4 /dev/sdc1

Expected result: mkfs should return very quickly because
lazy_itable_init is enabled.

Actual test results:

  - Kernel 4.4.0-71.92: mkfs blocks and formatting takes about
8-minutes.

  - Kernel 4.4.0-73.94~lp1682215: mkfs returns immediately.


Thanks!
Steve

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Joseph Salisbury]

I built a test kernel with commit 729204ef49.  The test kernel can be 
downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1682215/

Can you test this kernel and see if it resolves this bug?

Thanks in advance!

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu Xenial)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu Yakkety)
 Assignee: (unassigned) => Joseph Salisbury (jsalisbury)

** Changed in: linux (Ubuntu)
   Status: Triaged => In Progress

** Changed in: linux (Ubuntu Xenial)
   Status: Triaged => In Progress

** Changed in: linux (Ubuntu Yakkety)
   Status: Triaged => In Progress

** Tags added: kernel-da-key kernel-hyper-v xenial yakkety

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  [Hyper-V] mkfs regression in kernel 4.4+

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[Bug 1682215] Re: [Hyper-V] mkfs regression in kernel 4.4+

[Joseph Salisbury]

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
   Status: New

** Also affects: linux (Ubuntu Yakkety)
   Importance: Undecided
   Status: New

** Changed in: linux (Ubuntu)
   Status: Incomplete => Triaged

** Changed in: linux (Ubuntu Xenial)
   Status: New => Triaged

** Changed in: linux (Ubuntu Yakkety)
   Status: New => Triaged

** Changed in: linux (Ubuntu Xenial)
   Importance: Undecided => High

** Changed in: linux (Ubuntu Yakkety)
   Importance: Undecided => High

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  [Hyper-V] mkfs regression in kernel 4.4+

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