[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-06-05 Thread Mauricio Faria de Oliveira
verification done for bionic/hw-detect. disk-detect found the iscsi target/lun configured in ibft. bionic currently needed the workaround to download/install the iscsi_ibft.ko module, because the d-i changes are not yet in (update to kernel version that includes it in scsi-modules.udeb). $ wget

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-06-05 Thread Mauricio Faria de Oliveira
verification done for cosmic/hw-detect. disk-detect found the iscsi target/lun configured in ibft. cosmic currently needed the workaround to download/install the iscsi_ibft.ko module, because the d-i changes are not yet in (update to kernel version to includes it in scsi-modules.udeb). $ wget ht

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-06-05 Thread Mauricio Faria de Oliveira
verification done for disco/hw-detect. disk-detect found the iscsi target/lun configured in ibft. $ wget http://boot.ipxe.org/ipxe.lkrn $ wget http://archive.ubuntu.com/ubuntu/dists/disco/main/installer-amd64/20101020ubuntu570/images/netboot/ubuntu-installer/amd64/{linux,initrd.gz} $ python3 -m

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-06-03 Thread Mauricio Faria de Oliveira
Dan, thanks for the review/fixes/upload! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1817321 Title: installer does not support iSCSI iBFT Status in debian-installer package in Ubuntu

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-28 Thread Mauricio Faria de Oliveira
** Patch added: "eoan_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5267258/+files/eoan_partman-iscsi.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bu

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-28 Thread Mauricio Faria de Oliveira
Hi Eric, Nice catch. Sorry about that! Sure, just attached the partman-iscsi debdiffs with the LP bug mentioned in changelog. Thanks, Mauricio -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/b

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-28 Thread Mauricio Faria de Oliveira
** Patch added: "disco_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5267257/+files/disco_partman-iscsi.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-28 Thread Mauricio Faria de Oliveira
** Patch removed: "bionic_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265733/+files/bionic_partman-iscsi.debdiff ** Patch removed: "cosmic_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/52

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-28 Thread Mauricio Faria de Oliveira
** Patch added: "cosmic_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5267256/+files/cosmic_partman-iscsi.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https:

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
e: Undecided Status: New ** Also affects: linux (Ubuntu Eoan) Importance: Undecided Assignee: Mauricio Faria de Oliveira (mfo) Status: Fix Released ** Also affects: partman-iscsi (Ubuntu Eoan) Importance: Undecided Status: New ** Changed in: debian-installer (Ubuntu Bi

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "bionic_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265733/+files/bionic_partman-iscsi.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https:

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "disco_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265739/+files/disco_partman-iscsi.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "eoan_hw-detect.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265741/+files/eoan_hw-detect.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launc

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "eoan_d-i.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265740/+files/eoan_d-i.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bug

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "eoan_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265742/+files/eoan_partman-iscsi.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bu

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "cosmic_partman-iscsi.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265736/+files/cosmic_partman-iscsi.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https:

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "disco_hw-detect.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265738/+files/disco_hw-detect.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.lau

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "cosmic_hw-detect.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265735/+files/cosmic_hw-detect.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.l

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "disco_d-i.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265737/+files/disco_d-i.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/b

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
Adding patches and test procedure for the debian-installer userspace part. (disk-detect probes iSCSI iBFT disks; partman-iscsi sets ISCSI_AUTO=true for booting.) The d-i patches should be uploaded/built _after_ hw-detect and partman-iscsi are successfully built and published, so that its new vers

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "bionic_hw-detect.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265732/+files/bionic_hw-detect.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.l

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "cosmic_d-i.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265734/+files/cosmic_d-i.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
** Patch added: "bionic_d-i.debdiff" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1817321/+attachment/5265731/+files/bionic_d-i.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
Test Procedure with KVM guests + iPXE = - 2 guests: iSCSI target/server and iSCSI initiator/client. - 1 bridge for iSCSI traffic (virbr-iscsi, new), static ip. - 1 bridge for internet access (virbr0, exists), dhcp ip. Host: Configure the iSCSI bridge an

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-22 Thread Mauricio Faria de Oliveira
Test procedure for the partman-iscsi changes Based on the previous comment setup. iSCSI initiator: --- ... Note there's no 'iscsi_auto' in the kernel cmdline: iPXE> ifopen net0 iPXE> kernel http://192.168.122.1:8000/vmlinuz ini

[Kernel-packages] [Bug 1829563] Re: [4.15] bcache device is accessible even if a backing device is not (writeback mode)

2019-05-17 Thread Mauricio Faria de Oliveira
** Changed in: linux (Ubuntu) Assignee: (unassigned) => Mauricio Faria de Oliveira (mfo) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1829563 Title: [4.15] bcache device

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-05-14 Thread Mauricio Faria de Oliveira
** Description changed: [Impact] - * It's not possible to access iBFT (iSCSI Boot Firmware Table) information -(settings for network interface, initiator, and target) in the installer -because the 'iscsi_ibft' module is not present in udeb packages. +  * It's not possible to access i

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-26 Thread Mauricio Faria de Oliveira
** Attachment added: "kprobe-test.c" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1824827/+attachment/5259304/+files/kprobe-test.c -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-26 Thread Mauricio Faria de Oliveira
Verification successful on Cosmic. Updated the test-case kernel part (attached), and repeated it 20+ times, without any process hanging. In all cases, the new function call into write_cache_pages() is observed in thread 0, between page index 2 and page index 1. [ 150.914872] mod_init():161 :: h

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-15 Thread Mauricio Faria de Oliveira
The change introduced by the patch is evident in the kernel message log for Thread 0: between page indexes 2 and 1 there's now another function call to write_cache_pages() instead of just another iteration of the for-loop inside one call. Original kernel: [ 695.276320] Thread 0 running, TID = 3

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-15 Thread Mauricio Faria de Oliveira
Patch posted for SRU: [C][PATCH 0/1] Fix write()/fsync() deadlock in write_cache_pages() https://lists.ubuntu.com/archives/kernel-team/2019-April/100084.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.la

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-15 Thread Mauricio Faria de Oliveira
testcase test kernel :: latest cosmic version + patch: $ uname -rv 4.18.0-18-generic #19+test20190415b1 SMP Mon Apr 15 15:43:20 UTC 2019 [ 169.145212] kprobe_test: loading out-of-tree module taints kernel. [ 169.149144] kprobe_test: module

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-15 Thread Mauricio Faria de Oliveira
testcase, userspace part. ** Attachment added: "test.c" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1824827/+attachment/5255995/+files/test.c -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launc

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-15 Thread Mauricio Faria de Oliveira
testcase original kernel :: latest cosmic version: $ uname -rv 4.18.0-18-generic #19-Ubuntu SMP Tue Apr 2 18:13:16 UTC 2019 [ 654.491029] kprobe_test: loading out-of-tree module taints kernel. [ 654.493322] kprobe_test: module verification fail

[Kernel-packages] [Bug 1824827] Re: tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-15 Thread Mauricio Faria de Oliveira
testcase, kernel part. ** Attachment added: "kprobe-test.c" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1824827/+attachment/5255994/+files/kprobe-test.c -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https:/

[Kernel-packages] [Bug 1824827] [NEW] tasks doing write()/fsync() hit deadlock in write_cache_pages()

2019-04-15 Thread Mauricio Faria de Oliveira
with the patch for weeks and has not observed any other issues/regressions. [Other Info] * This is only required in Cosmic (for the Bionic HWE kernel), and is already applied in Disco. ** Affects: linux (Ubuntu) Importance: Undecided Status: Invalid ** Affects: linux (Ubunt

[Kernel-packages] [Bug 1821395] Re: fscache: jobs might hang when fscache disk is full

2019-04-12 Thread Mauricio Faria de Oliveira
Regression testing setup/steps === fscache --- sudo apt-get -y install cachefilesd echo 'RUN=yes' | sudo tee -a /etc/default/cachefilesd sudo modprobe fscache sudo systemctl start cachefilesd nfs --- sudo apt-get -y install nfs-kernel-server sudo systemctl start nfs-kernel-server sudo mk

[Kernel-packages] [Bug 1821395] Re: fscache: jobs might hang when fscache disk is full

2019-04-12 Thread Mauricio Faria de Oliveira
Verification successful with xfstests on nfs+fscache. No regression in bionic-proposed from bionic-updates. bionic-updates / 4.15.0-47: Failures: generic/035 generic/075 generic/091 generic/112 generic/263 generic/294 generic/306 generic/307 generic/430 generic/431 generic/434 generic/469 gener

[Kernel-packages] [Bug 1821395] Re: fscache: jobs might hang when fscache disk is full

2019-04-12 Thread Mauricio Faria de Oliveira
Verification successful with xfstests on nfs+fscache. No regression in cosmic-proposed from cosmic-updates. cosmic-updates / 4.18.0-17: Failures: generic/035 generic/258 generic/294 generic/448 generic/467 generic/477 generic/484 generic/490 generic/495 Failed 9 of 437 tests cosmic-proposed / 4

[Kernel-packages] [Bug 1821395] Re: fscache: jobs might hang when fscache disk is full

2019-04-11 Thread Mauricio Faria de Oliveira
The verification for bionic/cosmic -proposed is expected to finish by tomorrow (Apr 12). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1821395 Title: fscache: jobs might hang when fscac

[Kernel-packages] [Bug 1817628] Re: Regular D-state processes impacting LXD containers

2019-03-29 Thread Mauricio Faria de Oliveira
Marking X/B as verification done. The user reports the issue occurs much less often now. Apparently that environment hits some corner case or this may still be expected sometimes under memory pressure (i.e., one big shrinking operation acquired the lock and must finish). Nonetheless, the fix re

[Kernel-packages] [Bug 1802021] Re: [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start()

2019-03-25 Thread Mauricio Faria de Oliveira
Updating bug tags to verification done. As mentioned by users in this LP bug, the verification period of 5 days is _usually_ not enough to reproduce this problem, however, we have some datapoints that support the fix is good. 1) The fix has been first delivery in linux-azure, 3 weeks ago, and has

[Kernel-packages] [Bug 1821395] Re: fscache: jobs might hang when fscache disk is full

2019-03-22 Thread Mauricio Faria de Oliveira
[B/C][PATCH 0/1] Fix for LP#1821395 (fscache: jobs might hang when fscache disk is full) https://lists.ubuntu.com/archives/kernel-team/2019-March/099448.html ** Description changed: - < NOTE: patches will be sent to kernel-team mailing list. > - [Impact] - * fscache issue where jobs get h

[Kernel-packages] [Bug 1821395] Re: fscache: jobs might hang when fscache disk is full

2019-03-22 Thread Mauricio Faria de Oliveira
** Also affects: linux (Ubuntu Cosmic) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: Incomplete => Invalid ** Changed in: linux (Ubuntu Bionic) Status: New => Conf

[Kernel-packages] [Bug 1821395] [NEW] fscache: jobs might hang when fscache disk is full

2019-03-22 Thread Mauricio Faria de Oliveira
Public bug reported: < NOTE: patches will be sent to kernel-team mailing list. > [Impact] * fscache issue where jobs get hung when fscache disk is full. * trivial upstream fix; already applied in X/D, required in B/C: commit c5a94f434c82 ("fscache: fix race between enablement and droppi

[Kernel-packages] [Bug 1821259] Re: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
[X][PATCH 0/4] LP#1821259 Fix for deadlock in cpu_stopper https://lists.ubuntu.com/archives/kernel-team/2019-March/099427.html [B][PATCH 0/2] Fix for LP#1821259 (pending patches for) Fix for deadlock in cpu_stopper https://lists.ubuntu.com/archives/kernel-team/2019-March/099432.html ** Also affe

[Kernel-packages] [Bug 1821259] Re: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
Since Bionic already has the fix commit applied, the original kernel version doesn't hit the problem. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1821259 Title: Hard lockup in 2 CPUs

[Kernel-packages] [Bug 1821259] Re: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
Test-case on Xenial; $ ls -1d /sys/devices/system/cpu/cpu[0-9]* /sys/devices/system/cpu/cpu0 /sys/devices/system/cpu/cpu1 Original $ uname -rv 4.4.0-144-generic #170-Ubuntu SMP Thu Mar 14 11:56:20 UTC 2019 $ sudo insmod kmod-stopper/kmod-stopper.ko [ 74.198379] mod_init() :: this cp

[Kernel-packages] [Bug 1821259] Re: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
Both xenial and bionic original/patched kernels were tested with stress-ng scheduler class, and no regressions were observed. $ stress-ng --version stress-ng, version 0.09.56 (gcc 8.3, x86_64 Linux 4.15.0-47-generic) 💻🔥 $ sudo stress-ng --class scheduler --sequential 0 $ uname -rv 4.4.0-144-gene

[Kernel-packages] [Bug 1821259] Re: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1821259 Title: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers Status in linux package in Ubuntu: Incomplete Bug description: [I

[Kernel-packages] [Bug 1821259] Re: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
Test-case (kmod-stopper.c) - $ sudo apt-get -y install gcc make libelf-dev linux-headers-$(uname -r) $ touch Makefile # fake it, and use this make line: $ make -C /lib/modules/$(uname -r)/build M=$(pwd) obj-m=kmod-stopper.o modules $ echo 9 | sudo tee /proc/sys/kernel/printk $ sudo insm

[Kernel-packages] [Bug 1821259] Re: Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
Analysis The 1st hard lockup is harder to get the interesting data out of, as apparently the registers with variables related to the cpu number have been clobbered by more recent calls in the spinlock path. Looking at the 2nd hard lockup: addr2line + code shows us that try_to_wake_up(

[Kernel-packages] [Bug 1821259] [NEW] Hard lockup in 2 CPUs due to deadlock in cpu_stoppers

2019-03-21 Thread Mauricio Faria de Oliveira
Public bug reported: [Impact] * This problem hard locks up 2 CPUs in a deadlock, and this soft locks up other CPUs as an effect; the system becomes unusable. * This is relatively rare / difficult to hit because it's a corner case in scheduling/load balancing that needs timing with

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-03-18 Thread Mauricio Faria de Oliveira
bionic-proposed verification done; iscsi_ibft.ko is present in udeb and loads correctly. --- $ uname -rv 4.15.0-47-generic #50-Ubuntu SMP Wed Mar 13 10:44:52 UTC 2019 $ apt-get download scsi-modules-4.15.0-47-generic-di $ dpkg-deb -c scsi-modules-4.15.0-47-generic-di_4.15.0-47.50_amd64.udeb | gr

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-03-18 Thread Mauricio Faria de Oliveira
cosmic-proposed verification done; iscsi_ibft.ko is present in udeb and loads correctly. --- $ uname -rv 4.18.0-17-generic #18-Ubuntu SMP Wed Mar 13 14:34:40 UTC 2019 $ apt-get download scsi-modules-4.18.0-17-generic-di $ dpkg-deb -c scsi-modules-4.18.0-17-generic-di_4.18.0-17.18_amd64.udeb | gr

[Kernel-packages] [Bug 1802021] Re: [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start()

2019-03-18 Thread Mauricio Faria de Oliveira
Hi Marius @lazamarius1, Per the kernel.ubuntu.com schedule, the version for Bionic/linux -> Xenial/linux-hwe should land soon. You can verify the version/timestamps for each package/release at the bottom of these pages (the linux-hwe version comes a bit after the corresponding linux version) ht

[Kernel-packages] [Bug 1802021] Re: [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start()

2019-03-18 Thread Mauricio Faria de Oliveira
@lazamarius1, Actually linux-hwe for Bionic with this fix has just been uploaded. See in https://launchpad.net/ubuntu/+source/linux-hwe Changelog linux-hwe (4.15.0-47.50~16.04.1) xenial; urgency=medium ... * [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start() (LP: #1802021) - srcu

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-03-15 Thread Mauricio Faria de Oliveira
Installer (non-kernel) patches submitted to Debian for feedback. - disk-detect: https://bugs.debian.org/924675 - partman-iscsi: https://bugs.debian.org/924680 ** Bug watch added: Debian Bug tracker #924675 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924675 ** Bug watch added: Debian Bug

[Kernel-packages] [Bug 1793901] Re: kernel oops in bcache module

2019-02-27 Thread Mauricio Faria de Oliveira
For documentation purposes, this is the block device setup configured in the system to debug/test/fix/verify the bug. disk partitioning: # fdisk /dev/sdb # create sdb1 and sbd2, 100G each. bcache backing device: LVM volume in partition 1 # pvcreate /dev/sdb1 # vgcreate vg-test /dev/sdb1 # lvcre

[Kernel-packages] [Bug 1793901] Re: kernel oops in bcache module

2019-02-27 Thread Mauricio Faria de Oliveira
trusty-proposed: --- verification successful. executed the reproducer 3x on the system used to debug/test/fix this problem. no bug/oops observed. root@petilil:~# uname -rv 3.13.0-166-generic #216-Ubuntu SMP Thu Feb 7 14:07:53 UTC 2019 root@petilil:~# echo writeback > /sys/block/bcache0/bcache/ca

[Kernel-packages] [Bug 1793901] Re: kernel oops in bcache module

2019-02-27 Thread Mauricio Faria de Oliveira
xenial-proposed: --- verification successful. executed the reproducer 3x on the system used to debug/test/fix this problem. no bug/oops observed. root@petilil:~# uname -rv 4.4.0-143-generic #169-Ubuntu SMP Thu Feb 7 07:56:38 UTC 2019 root@petilil:~# echo writeback > /sys/block/bcache0/bcache/ca

[Kernel-packages] [Bug 1793901] Re: kernel oops in bcache module

2019-02-27 Thread Mauricio Faria de Oliveira
bionic-proposed: --- verification successful. executed the reproducer 3x on the system used to debug/test/fix this problem. no bug/oops observed. root@petilil:~# uname -rv 4.15.0-46-generic #49-Ubuntu SMP Wed Feb 6 09:33:07 UTC 2019 root@petilil:~# echo writeback > /sys/block/bcache0/bcache/cach

[Kernel-packages] [Bug 1793901] Re: kernel oops in bcache module

2019-02-27 Thread Mauricio Faria de Oliveira
cosmic-proposed: --- verification successful. executed the reproducer 3x on the system used to debug/test/fix this problem. no bug/oops observed. root@petilil:~# uname -rv 4.18.0-16-generic #17-Ubuntu SMP Fri Feb 8 00:06:57 UTC 2019 root@petilil:~# echo writeback > /sys/block/bcache0/bcache/cach

[Kernel-packages] [Bug 1817628] Re: Regular D-state processes impacting LXD containers

2019-02-25 Thread Mauricio Faria de Oliveira
[X/B][PATCH] mm: do not stall register_shrinker() https://lists.ubuntu.com/archives/kernel-team/2019-February/098791.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1817628 Title: Re

[Kernel-packages] [Bug 1817628] Re: Regular D-state processes impacting LXD containers

2019-02-25 Thread Mauricio Faria de Oliveira
Also verified this with stress-ng's memory stressor class. The system gets under memory pressure to the point of calling shrink_slab() 10s to 100s thousand times a second (verified with ftrace; function tracer; shrink_slab filter). $ sudo stress-ng --class memory --all -1 & # echo shrink_slab >

[Kernel-packages] [Bug 1817628] [NEW] Regular D-state processes impacting LXD containers

2019-02-25 Thread Mauricio Faria de Oliveira
Public bug reported: [Impact] * Systems running under memory pressure may hit stalls in the order of seconds to minutes in systemd-logind and lxd mount operations (e.g., ZFS backend), which get stuck in D state. * The processes stuck in D state have a common stack trace, (cat /proc/PI

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-02-22 Thread Mauricio Faria de Oliveira
Test for scsi-modules udeb in Disco: --- Check the original/modified udeb contents: $ dpkg-deb -c scsi-modules-4.19.0-13-generic-di_4.19.0-13.14_amd64.udeb | grep iscsi_ibft.ko $ $ dpkg-deb -c scsi-modules-4.19.0-13-generic-di_4.19.0-13.14+test20190221b1_amd64.udeb | grep iscsi_ibft.ko -rw-r-

[Kernel-packages] [Bug 1817321] [NEW] installer does not support iSCSI iBFT

2019-02-22 Thread Mauricio Faria de Oliveira
d Assignee: Mauricio Faria de Oliveira (mfo) Status: Confirmed ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Mauricio Faria de Oliveira (mfo) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. ht

[Kernel-packages] [Bug 1817321] Re: installer does not support iSCSI iBFT

2019-02-22 Thread Mauricio Faria de Oliveira
linux patch posted to the kernel-team mailing list: [B/C/D/Unstable][PATCH] UBUNTU: d-i: add iscsi_ibft to scsi-modules https://lists.ubuntu.com/archives/kernel-team/2019-February/098745.html ** Changed in: linux (Ubuntu) Status: New => Confirmed -- You received this bug notification bec

[Kernel-packages] [Bug 1783152] Re: Enable basic support for Solarflare 8000 series NIC

2019-02-20 Thread Mauricio Faria de Oliveira
** Also affects: debian-installer (Ubuntu Precise) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Precise) Importance: Undecided Status: New ** Also affects: linux-lts-xenial (Ubuntu Precise) Importance: Undecided Status: New ** No longer affects:

[Kernel-packages] [Bug 1802021] Re: [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start()

2019-02-14 Thread Mauricio Faria de Oliveira
Hi @lazamarius1, The fix for linux generic should be applied in the next kernel SRU cycle. The current cycle ends on late February [1]. [1] https://kernel.ubuntu.com/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure in Ubuntu.

[Kernel-packages] [Bug 1811094] Re: iptables connlimit allows more connections than the limit when using multiple CPUs

2019-02-11 Thread Mauricio Faria de Oliveira
Verification successful on trusty-proposed. Updates kernel (goes above 2000 connections) --- root@petilil:~# uname -a Linux petilil 3.13.0-165-generic #215-Ubuntu SMP Wed Jan 16 11:46:47 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux root@petilil:~# iptables -F root@petilil:~# iptables -A INPUT -p tcp

[Kernel-packages] [Bug 1802021] Re: [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start()

2019-02-08 Thread Mauricio Faria de Oliveira
Hi Marcelo (@mhcerri), We have another user who confirmed the 2 patches submitted for linux- azure also fix the problem on linux(-generic). srcu: Prohibit call_srcu() use under raw spinlocks srcu: Lock srcu_data structure in srcu_gp_start() Could they be submitted for linux as well? Thank

[Kernel-packages] [Bug 1802021] Re: [Hyper-V] srcu: Lock srcu_data structure in srcu_gp_start()

2019-02-04 Thread Mauricio Faria de Oliveira
Marcelo @mhcerri, Would you be able to provide a test kernel for bionic/linux-hwe so that @lazamarius1 can provide test results for -generic? I'll be happy to do that as well if you're short on time right now. (I guess the patchset is the same you posted for linux-azure.) Thanks, Mauricio -- Y

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-22 Thread Mauricio Faria de Oliveira
The reporter verified the Bionic kernel successfully as well. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1810998 Title: CPU hard lockup with rigorous writes to NVMe drive Status in

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-21 Thread Mauricio Faria de Oliveira
Verification done on Bionic (no errors seen on dmesg). Still waiting on verification by the reporter (different hardware), but this verification shows no regression in dmesg. Same steps as described in the previous comment. ** Tags removed: verification-needed-bionic ** Tags added: verification-

[Kernel-packages] [Bug 1810781] Re: mpt3sas - driver using the wrong register to update a queue index in FW

2019-01-18 Thread Mauricio Faria de Oliveira
Verification done on Bionic, with the HWE kernel in Xenial (i.e., 4.15.0-44.47~16.04.1 per the original reporter's environment) The mpt3sas driver is running correctly -- the sosreport shows the previous kernel had mpt3sas fault_state error messages repeatedly within less than 10 minutes, and the

[Kernel-packages] [Bug 1810781] Re: mpt3sas - driver using the wrong register to update a queue index in FW

2019-01-17 Thread Mauricio Faria de Oliveira
Verification done on Cosmic for regression on an older adapter model, I/O stress (iozone) finishes successfully, no errors seen in dmesg. Waiting for verification on Bionic by the reporter. root@dixie:~# fdisk /dev/sdb # create one partition root@dixie:~# mkfs.ext4 /dev/sdb1 root@dixie:~# mount /

[Kernel-packages] [Bug 1811094] Re: iptables connlimit allows more connections than the limit when using multiple CPUs

2019-01-17 Thread Mauricio Faria de Oliveira
Verification done on Xenial. - server: root@shuckle:~# uname -a Linux shuckle 4.4.0-142-generic #168-Ubuntu SMP Wed Jan 16 21:00:45 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux root@shuckle:~# iptables -F root@shuckle:~# iptables -A INPUT -p tcp -m tcp --syn --dport -m connlimit --connlimit-abo

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-17 Thread Mauricio Faria de Oliveira
Verification done on Cosmic (no errors seen on dmesg). Waiting for verification on Bionic by the reporter. root@shuckle:~# uname -a Linux shuckle 4.18.0-14-generic #15-Ubuntu SMP Mon Jan 14 09:01:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux root@shuckle:~# fdisk /dev/nvme0n1 # create one partition

[Kernel-packages] [Bug 1811094] Re: iptables connlimit allows more connections than the limit when using multiple CPUs

2019-01-15 Thread Mauricio Faria de Oliveira
Verification done for Bionic. bionic-proposed: --- - server: root@shuckle:~# uname -a Linux shuckle 4.15.0-44-generic #47-Ubuntu SMP Mon Jan 14 11:26:59 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux - client: root@dixie:~# ruby client.rb 10.230.56.116 6000 3 Connecting to ["10.230.56.116"]:777

[Kernel-packages] [Bug 1811094] Re: iptables connlimit allows more connections than the limit when using multiple CPUs

2019-01-15 Thread Mauricio Faria de Oliveira
Verification done for Cosmic. cosmic-proposed: --- - server: root@shuckle:~# uname -a Linux shuckle 4.18.0-14-generic #15-Ubuntu SMP Mon Jan 14 09:01:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux - client: root@dixie:~# ruby client.rb 10.230.56.116 6000 3 Connecting to ["10.230.56.116"]:77

[Kernel-packages] [Bug 1811094] Re: iptables connlimit allows more connections than the limit when using multiple CPUs

2019-01-14 Thread Mauricio Faria de Oliveira
[SRU T][PATCH 0/3] netfilter: nf_conncount: fix for LP#1811094 https://lists.ubuntu.com/archives/kernel-team/2019-January/097878.html [SRU X][PATCH 0/6] netfilter: nf_conncount: fix for LP#1811094 https://lists.ubuntu.com/archives/kernel-team/2019-January/097698.html [SRU B][PATCH 0/5] netfilter:

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-11 Thread Mauricio Faria de Oliveira
Patch v2 series posted to the kernel-team mailing list: [SRU B][PATCH v2 0/7] blk-wbt: fix for LP#1810998 https://lists.ubuntu.com/archives/kernel-team/2019-January/097831.html [SRU C][PATCH v2 0/6] blk-wbt: fix for LP#1810998 https://lists.ubuntu.com/archives/kernel-team/2019-January/097840.html

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-10 Thread Mauricio Faria de Oliveira
** Description changed: [Impact] -  * Users may experience cpu hard lockups when performing -    rigorous writes to NVMe drives. + * Users may experience cpu hard lockups when performing +rigorous writes to NVMe drives. -  * The fix addresses an scheduling issue in the original -    i

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-09 Thread Mauricio Faria de Oliveira
Patch series posted to kernel-team mailing list: [SRU B][PATCH 00/13] blk-wbt: fix for LP#1810998 https://lists.ubuntu.com/archives/kernel-team/2019-January/097675.html [SRU C][PATCH 0/8] blk-wbt: fix for LP#1810998 https://lists.ubuntu.com/archives/kernel-team/2019-January/097689.html -- You r

[Kernel-packages] [Bug 1811094] Re: iptables connlimit allows more connections than the limit when using multiple CPUs

2019-01-09 Thread Mauricio Faria de Oliveira
** Description changed: - The following iptables connlimit rule can be breached - with a multithreaded client and network device driver, - due to a race in the conncount/connlimit code: + [Impact] - # iptables -A INPUT -p tcp -m tcp --syn --dport \ - -m connlimit --connlimit-above 2000 -

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-09 Thread Mauricio Faria de Oliveira
** Description changed: - [NOTE] - -  * Patches will be sent to the kernel-team mailing list -    once the test kernel has been verified by the reporter. - [Impact]  * Users may experience cpu hard lockups when performing    rigorous writes to NVMe drives.  * The fix addresses an s

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-09 Thread Mauricio Faria de Oliveira
** Description changed: [NOTE]  * Patches will be sent to the kernel-team mailing list    once the test kernel has been verified by the reporter. [Impact]  * Users may experience cpu hard lockups when performing    rigorous writes to NVMe drives.  * The fix addresses an s

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-09 Thread Mauricio Faria de Oliveira
** Description changed: [NOTE]  * Patches will be sent to the kernel-team mailing list    once the test kernel has been verified by the reporter. [Impact]  * Users may experience cpu hard lockups when performing    rigorous writes to NVMe drives.  * The fix addresses an s

[Kernel-packages] [Bug 1811094] [NEW] iptables connlimit allows more connections than the limit when using multiple CPUs

2019-01-09 Thread Mauricio Faria de Oliveira
DROP NOTE: Patches will be sent to the kernel-team mailing list and more details/testing will be provided later today. ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Mauricio Faria de Oliveira (mfo) Status: Confirmed ** Changed in: linux (Ubuntu) Assignee

[Kernel-packages] [Bug 1810998] Re: CPU hard lockup with rigorous writes to NVMe drive

2019-01-08 Thread Mauricio Faria de Oliveira
** Description changed: [NOTE] - * Patches will be sent to the kernel-team mailing list -once the test kernel has been verified by the reporter. +  * Patches will be sent to the kernel-team mailing list +    once the test kernel has been verified by the reporter. [Impact] - * Us

[Kernel-packages] [Bug 1810998] [NEW] CPU hard lockup with rigorous writes to NVMe drive

2019-01-08 Thread Mauricio Faria de Oliveira
tu) Importance: Undecided Assignee: Mauricio Faria de Oliveira (mfo) Status: Incomplete ** Tags: bionic ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Mauricio Faria de Oliveira (mfo) -- You received this bug notification because you are a member of Kernel Packages

[Kernel-packages] [Bug 1810781] Re: mpt3sas - driver using the wrong register to update a queue index in FW

2019-01-07 Thread Mauricio Faria de Oliveira
Patch submitted to kernel-team mailing list, got 2 ACKs. https://lists.ubuntu.com/archives/kernel-team/2019-January/097471.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1810781 Titl

[Kernel-packages] [Bug 1810781] Re: mpt3sas - driver using the wrong register to update a queue index in FW

2019-01-07 Thread Mauricio Faria de Oliveira
** Description changed: [Impact] * Adapter resets periodically during high-load activity. * I/O stalls until reset/reinit is complete (latency) and I/O performance degrades across cluster (e.g., low throughput from data spread over nodes). * The mpt3sas driver relies in a FW que

[Kernel-packages] [Bug 1810781] Re: mpt3sas - driver using the wrong register to update a queue index in FW

2019-01-07 Thread Mauricio Faria de Oliveira
** Description changed: [Impact] + + * Adapter resets periodically during high-load activity. + + * I/O stalls until reset/reinit is complete (latency) and I/O performance + degrades across cluster (e.g., low throughput from data spread over nodes). * The mpt3sas driver relies in a FW que

[Kernel-packages] [Bug 1800877] Re: iproute2/xenial: Add support for the VF Trust setting (fix IPv6 multicast under SR-IOV on Mellanox adapters)

2018-11-14 Thread Mauricio Faria de Oliveira
autopkgtests for open-vm-tools, failures in amd64 and i386. These are consistently failing since May 14th, 2018 for a lot of other packages, thus not a change from this upload. Thanks, Mauricio -- You received this bug notification because you are a member of Kernel Packages, which is subscribe

[Kernel-packages] [Bug 1800877] Re: iproute2/xenial: Add support for the VF Trust setting (fix IPv6 multicast under SR-IOV on Mellanox adapters)

2018-11-14 Thread Mauricio Faria de Oliveira
autopkgtests for ubuntu-fan (triggered by this iproute2 upload) The test failure in ubuntu-fan's lxd test (the thing that is failing in these autopkgtests) does look flaky. Looking at autopkgtest logs for ubuntu-fan on xenial, there's a series of retriggers for the _same_ version of docker.io th

[Kernel-packages] [Bug 1797990] Re: kdump fail due to an IRQ storm

2018-11-08 Thread Mauricio Faria de Oliveira
Attaching for documentation purposes, Tarball with 'dmesg -t | sort' for boot/kexec & option disabled/enabled, in Xenial, Bionic, Cosmic, Disco. ** Attachment added: "sf202166.dmesg.tar.xz" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1797990/+attachment/5210405/+files/sf202166.dmesg.

[Kernel-packages] [Bug 1797990] Re: kdump fail due to an IRQ storm

2018-11-08 Thread Mauricio Faria de Oliveira
Patch set v2 submitted to the kernel-team mailing list for Xenial, Bionic, Cosmic, Disco. [SRU X][PATCH v2 0/3] Add kernel parameter 'pci=clearmsi' to clear MSI(X)s early on boot https://lists.ubuntu.com/archives/kernel-team/2018-November/096631.html [SRU B][PATCH v2 0/3] Add kernel parameter 'p

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