Thanks Scott, I've made the bug public.
There's a surprising number of crashes reported to the error tracker --
I wonder if your hardware is entirely stable? Have you run memtest86 or
memtest86+ recently? Is there anything in your smartctl output that
would indicate drive problems?
Thanks
** Inf
Thank you for using Ubuntu and taking the time to report a bug. Your
report should contain, at a minimum, the following information so we can
better find the source of the bug and work to resolve it.
Submitting the bug about the proper source package is essential. For
help see https://wiki.ubuntu.
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Title:
Touchpad Not Working
Status in linux package in Ubuntu:
New
Thanks for commenting on this issue. I'm sorry we lost track of proper
public attribution for the discovery.
Yes, you may use this CVE publicly. (And thanks for asking.)
** Information type changed from Private Security to Public Security
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Xenial:
$ grep AOUT !$
grep AOUT /boot/config-4.4.0-149-generic
# CONFIG_HAVE_AOUT is not set
# CONFIG_IA32_AOUT is not set
Bionic:
$ grep AOUT /boot/config-4.15.0-
What steps specifically do you have to do each boot?
Please run apport-collect 1830400 in order to run the automated data
collection for this bug report.
Thanks
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Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug. I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privile
On Tue, Mar 19, 2019 at 09:46:38AM -, kenn wrote:
> I have that bug, i/o screenlet won't run because of insufficient
> permission. Will it be fixed in the 4.4.0-143 kernel?
This was an intentional change:
https://marc.info/?l=git-commits-head&m=151163650225215&w=2
https://lkml.org/lkml/2018/1
** Package changed: alsa-driver (Ubuntu) => linux (Ubuntu)
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Title:
sound doesn't works in both kernel. no one cards is recognize by
Can you run apport-collect 1831490 on this machine to collect additional
logs and data?
Thanks
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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h
Public bug reported:
Hello, I had some apt install failures due to zfs segfaults during zfs
postinst scripts:
sarnold@millbarge:/var/lib$ sudo apt install -f
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically i
On Mon, Feb 10, 2020 at 07:53:20AM -, Andrea Righi wrote:
> OK, so we know that it's not related to the memory cgroup subsystem.
But this is a good instinct. It does seem to happen when eg firefox or git
is in heavy memory use, not the system as a whole.
> Another reason of such unexpected sw
Public bug reported:
Hello, while investigating bug 1861359 I tried to use kprobe-perf to
troubleshoot and found that tracing doesn't work on focal:
# kprobe-perf -s 'p:shrink_node'
ERROR: func shrink_node not in
/sys/kernel/debug/tracing/available_filter_functions.
Either it doesn't exist, or,
> What do you have in /proc/sys/vm/swappiness? Could you try to set that
> to 0 (kernel prefers to drop file-backed pages instead of swapping out
> anonymous pages) and see if the swap out activity is still happening?
Unfortunately, this did not solve the problem.
Setting swappiness to 0 and re-e
I didn't know that two of my datasets were not mounted:
$ zfs list -oname,canmount,mounted,mountpoint | grep 'on no'
rpool/var/cache on no /var/cache
rpool/var/lib/AccountsServiceon no /var/lib/AccountsService
Thanks
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These are all the zpool and zfs commands on the receiver except
snapshots, renames, and destroys, associated with my Ubuntu archive
mirror rsync. (7000-ish lines of juggling 30-snapshots. I should do
something better here.)
** Attachment added: "receiver_limited_history"
https://bugs.launchpad
These are just the zfs bookmark and zfs send commands from the sender.
** Attachment added: "zfs bookmark, zfs send commands"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861235/+attachment/5327157/+files/sender_limited_history
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The two machines involved are:
Receiver, bionic, probably running 4.15.0-76-generic and zfsutils-linux
0.7.5-1ubuntu16.7
Sender, focal, probably running 5.4.0-12-generic and zfsutils-linux
0.8.3-1ubuntu3
I'm using sanoid and syncoid to automate snapshot management and sending and
receiving. Th
apport information
** Attachment added: "ArecordDevices.txt"
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** Tags added: apport-collected
** Description changed:
Hello, while investigating bug 1861359 I tried to use kprobe-perf to
troubleshoot and found that tracing doesn't work on focal:
# kprobe-perf -s 'p:shrink_node'
ERROR: func shrink_node not in
/sys/kernel/debug
apport information
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** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
tracing doesn't work on focal
Status in linux package
Please use CVE-2020-8832 for this issue. Thanks.
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-8832
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Title:
[Bi
$ uname -a
Linux millbarge 5.4.0-12-generic #15-Ubuntu SMP Tue Jan 21 15:12:29 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
$ grep FTRACE /boot/config-`uname -r`
CONFIG_KPROBES_ON_FTRACE=y
CONFIG_HAVE_KPROBES_ON_FTRACE=y
CONFIG_STM_SOURCE_FTRACE=m
# CONFIG_PSTORE_FTRACE is not set
CONFIG_HAVE_DYNAMIC_F
Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug. I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privile
Thanks Andrea, I don't think that helped. I'll attach a file with vmstat
1 output and funclatency output, along with a few notes on the testing.
Thanks
** Attachment added: "after-limiting-dirty-bytes"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861359/+attachment/5349071/+files/aft
I should point out that the period bursts of writes every five seconds
in my vmstat 1 output is due to zfs's flushing mechanism; by default it
flushes dirty pages every five seconds.
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Thanks Colin,
I believe that bountysource.com url is a scrape of
https://github.com/openzfs/zfs/issues/6223
I hadn't seen much of this information before.
Sadly my machine doesn't have enough memory to just keep turning up the
knobs -- the working set far exceeds the memory of my computer.
A re
Writing 8589934592 (eight gigs) into the zfs_arc_dnode_limit seemed to
make an improvement: the arc_prune threads would periodically spike
above 20% CPU use, but would return to 2-5% CPU use quickly; it worked
well for a long time, perhaps even hours, before all the arc_prune
threads returned to ~5
Andrea, I've been running the v1 kernel for a day or so now:
[0.00] Linux version 5.4.0-24-generic (arighi@sita) (gcc version
9.3.0 (Ubuntu 9.3.0-10ubuntu1)) #28+lp1861359v1 SMP Wed Apr 15 14:49:33
UTC 2020 (Ubuntu 5.4.0-24.28+lp1861359v1-generic 5.4.30)
$ uptime
02:21:45 up 1 day, 9 min
Andreas, this system is running 18.04 LTS, 0.7.5-1ubuntu16.8,
4.15.0-91-generic.
It has 128 gigs of ram; the workload is running ripgrep on an entire
unpacked Ubuntu source archive, roughly 193 million files, 3.8 TB of
data, on a single raidz1 ssd vdev.
So I have no illusions that this workload f
Colin, thanks for the link to https://github.com/openzfs/zfs/issues/9966
; unfortunately I think that's a different problem, my meta use seems
less drastic than the github issue
arc_prune 41859269059
arc_meta_used 43590932168
arc_meta_limit
I forgot to mention, my l2arc is used on the second pool on this system:
$ zpool iostat -v
capacity operations
bandwidth
pool alloc free read write read
write
-
This feels related to
https://bugs.launchpad.net/ubuntu/+source/rtkit/+bug/1875665 which was
filed by amd64 users.
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Title:
test_regr
Here's the part that looks important; the whole dmesg is in the
attachment.
Thanks
[ 761.730488] dnone_free_ramge: nblks = 0, trunc = 1, len =
18446744073709551615, blkshift = 0
[ 761.730542] dnode_free_range: nblks == 0, len == 18446744073709551615
, off=0
[ 761.730543] range_
Thanks Colin!
[ 271.628232] dnone_free_ramge: nblks = 0, trunc = 1, len =
18446744073709551615, blkshift = 0
[ 271.628297] dnode_free_range: nblks == 0, len == 18446744073709551615
, off=0
[ 271.628298] range_tree_clear: size == 0
[ 271.628375] range_tree_find_impl: size == 0
[
Hello Colin, this looks promising for my arc_prune spinlock contention
problems:
https://github.com/openzfs/zfs/pull/10331
with some background here:
https://github.com/openzfs/zfs/issues/7559
This might have a simple ~dozen line fix! It's not yet reviewed by the
openzfs gurus but it sure *look
Hello Colin, trying the zfs recv operation on the .3 dkms eventually
kills my system dead. There was nothing on the console. The cursor on
the console stopped blinking; I couldn't switch VTs. My ssh sessions
were hung. ping reported destination host unreachable.
It ran for about two and a half min
On Sat, May 16, 2020 at 01:56:08AM -, Seth Arnold wrote:
> Sadly, journalctl doesn't have the dmesg from the previous boot:
I meant to say, journalctl's copy of dmesg from the previous boot doesn't
have the new debug output. Sorry.
Thanks
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Title:
Touchpad not detected
Status in linux package in Ubuntu:
New
** Information type changed from Private Security to Public
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Title:
package linux-image-4.4.0-178-generic 4.4.0-178.208 faile
I'm sorry, I can't recall that system very well at this point. "gmain"
is the generic name used by any application using glib's
g_get_worker_context() function to create worker threads. At this point
I can't even recall if I booted that system with X11 / lightdm or if I
had configured it to boot to
BTW, this is still happening in:
Linux millbarge 5.4.0-20-generic #24-Ubuntu SMP Mon Mar 23 20:55:46 UTC
2020 x86_64 x86_64 x86_64 GNU/Linux
I've seen it both with firefox in trello, firefox in launchpad (typing
this comment) and doing two sequential wgets of
http://releases.ubuntu.com/18.04/ubun
I'm adding the champagne tag to this bug to bring it to a potential
wider audience; I think we may need to take more drastic steps like
disabling swap on upgrades, not offering swap in our installers, etc.,
to try to have a better experience.
Thanks
** Tags added: champagne
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Sultan, thanks for the advice.
I set this watermark boost factor to zero as you suggested, and then
decided to try a stupid simple benchmark of my storage -- my swap is a
zfs dataset on nvme. zfs means it'll go slower than raw nvme block
access:
$ dd if=ubuntu-18.04.4-desktop-amd64.iso of=foo bs=
Sultan put together a kernel with some debugging for me:
[101616.889859] __alloc_pages_nodemask: stall of 3683ms for order-0, mask:
0x100dca
[101616.889863] Call Trace:
[101616.889880] __alloc_pages_nodemask+0x34f/0x3b0
[101616.889887] alloc_pages_vma+0x7f/0x200
[101616.889893] do_anonymous_pa
I'm sorry for the slow response Francis, I've been running custom kernels for:
https://bugs.launchpad.net/bugs/1861359
for a while. Thanks for the reminder.
sarnold@millbarge:~$ dmesg | grep -i lockdown
[0.00] Kernel is locked down from EFI Secure Boot mode; see man
kernel_lockdown.7
[
Stefan, while recent kernels seem happier than previous kernels (I think
-14 era was terrible), I don't think this problem is fixed yet:
sarnold@millbarge:/tmp$ uname -a
Linux millbarge 5.4.0-21-generic #25-Ubuntu SMP Sat Mar 28 13:10:28 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
sarnold@millbarge:/
Just to be clear, not *all* tracing tools work, but this is much better:
sarnold@millbarge:/tmp$ uname -a
Linux millbarge 5.4.0-21-generic #25-Ubuntu SMP Sat Mar 28 13:10:28 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
sarnold@millbarge:/tmp$ sudo zfsslower-bpfcc
Traceback (most recent call last):
Hello Colin, yes, this is still an open issue:
Linux wopr 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
Apr 22 19:10:03 wopr zed[12576]: eid=8352 class=history_event
pool_guid=0xB3B099B638F02EEF
Apr 22 19:10:03 wopr kernel: VERIFY(size != 0) failed
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Title:
wifi is not showing in select networks
Status in linux package
I picked the last dataset given in the command output from an earlier,
but not the most recent, comment:
$ sudo zdb - srv/backups/millbarge/rpool/var/log 529
Dataset srv/backups/millbarge/rpool/var/log [ZPL], ID 39694, cr_txg 23197757,
554M, 274 objects, rootbp DVA[0]=<1:1d000d42000:1000>
DV
The default NFSv4 acls may be a poor choice on ZOL. This keeps biting
people unexpectedly, I wonder how many people this has affected and they
never spot it?
Thanks
** Also affects: zfs-linux (Ubuntu)
Importance: Undecided
Status: New
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$ uname -a
Linux millbarge 5.4.0-12-generic #15-Ubuntu SMP Tue Jan 21 15:12:29 UTC 2020
x86_64 x86_64 x86_64 GNU/Linux
$ cat /proc/sys/kernel/ftrace_enabled
1
$ sudo kprobe-perf -s 'p:shrink_node'
[sudo] password for sarnold:
ERROR: func shrink_node not in
/sys/kernel/debug/tracing/available_fil
Public bug reported:
Hello, I tried to disable lockdown so I could debug bug 1861359.
I changed my security= kernel command line parameter to no longer
reference lockdown or integrity and yet the lockdown still applied:
sarnold@millbarge:~/Canonical/work-reports$ uname -a
Linux millbarge 5.4.0-1
This web page may be a good reproducer candidate:
https://platform.leolabs.space/visualizations/conjunction?type=conjunction&reportId=2004981040
Loading it in firefox would make my computer unresponsive for over a
minute. (Be careful with firefox reloading it when re-opening firefox.)
Loading it
Public bug reported:
Hello, there's dangling symlinks in the zfsutils-linux binary packages
on a bionic system:
lrwxrwxrwx 1 root root7 Apr 13 2016 libnvpair1linux -> zfs-doc
lrwxrwxrwx 1 root root7 Apr 13 2016 libuutil1linux -> zfs-doc
lrwxrwxrwx 1 root root7 Apr 13 2016 libzfs2li
Andrea, this new kernel looks promising.
Linux millbarge 5.4.0-17-generic #21-Ubuntu SMP Fri Feb 28 16:18:44 UTC
2020 x86_64 x86_64 x86_64 GNU/Linux
Unfortunately I didn't check the reproducer before rebooting: the error
message I get with it now suggests that it might not work any more.
However
Andrea, unfortunately this updated kernel hasn't fixed the problem:
01:02:48 up 21:21, 9 users, load average: 1.45, 0.98, 0.58
Linux millbarge 5.4.0-17-generic #21-Ubuntu SMP Fri Feb 28 16:18:44 UTC
2020 x86_64 x86_64 x86_64 GNU/Linux
I was able to reproduce the swap growth and hangs with Fi
I couldn't find a way to disable the lockdown functionality short of
disabling secure boot in my UEFI system setup.
If we choose to keep lockdown enabled by default then we will need to
document a way it can be disabled so users can run applications like
https://cilium.io/ or the bcc iovisor tools
There is an interesting (to me, anyway) change of behaviour with the -17
kernel: while earlier kernels would appear to be locked solid for 30-60
seconds before the screen could update, -17 allows screen updates every
six seconds or so.
I have an always-running mosh session to a remote host running
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: intel-microcode (Ubuntu)
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Title:
Hello, this appears to be working as designed.
In Linux, process tracing is tied with the process dumping flag. The
dumpable flag is cleared at execve(2) time when a setuid or setgid
application is executed. This flag persists to child processes created
by fork(2) and will only be reset when a pro
Public bug reported:
Hello, fatrace in focal doesn't seem to work for me in focal.
Start fatrace in one terminal, and perform file operations in another
terminal: man man, echo hi > hi, echo hi > /run/user/1000/hi, etc.
sarnold@millbarge:~$ sudo fatrace
[sudo] password for sarnold:
^Csarnold@mi
I added the linux package too, because the strace doesn't seem too
unusual.
** Attachment added: "strace.out"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861053/+attachment/5323430/+files/strace.out
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** Tags added: apport-collected
** Description changed:
Hello, fatrace in focal doesn't seem to work for me in focal.
Start fatrace in one terminal, and perform file operations in another
terminal: man man, echo hi > hi, echo hi > /run/user/1000/hi, etc.
sarnold@
apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1861053/+attachment/5323432/+files/ProcCpuinfoMinimal.txt
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** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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Title:
no fatrace output in focal
Status in fatrace package i
Public bug reported:
Hello, I believe these errors happened due to a zfs recv command that
was executing at the time:
[10823702.582392] VERIFY(size != 0) failed
[10823702.582428] PANIC at range_tree.c:304:range_tree_find_impl()
[10823702.582463] Showing stack for process 693172
[10823702.582466]
Public bug reported:
Same as bug 1861228 but with a newer kernel installed.
[ 790.702566] VERIFY(size != 0) failed
[ 790.702590] PANIC at range_tree.c:304:range_tree_find_impl()
[ 790.702611] Showing stack for process 28685
[ 790.702614] CPU: 17 PID: 28685 Comm: receive_writer Tainted: P
*** This bug is a duplicate of bug 1861235 ***
https://bugs.launchpad.net/bugs/1861235
** This bug has been marked a duplicate of bug 1861235
zfs recv PANIC at range_tree.c:304:range_tree_find_impl()
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apport information
** Tags added: apport-collected
** Description changed:
Hello, several times since upgrading to focal from 19.04 I've found my
computer entirely unresponsive for periods of twenty or thirty seconds.
No mouse movement, no keyboard input, the screen output does not change.
apport information
** Attachment added: "AplayDevices.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324032/+files/AplayDevices.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324041/+files/CurrentDmesg.txt
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apport information
** Attachment added: "Card0.Amixer.values.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324037/+files/Card0.Amixer.values.txt
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https://bugs
apport information
** Description changed:
Hello, several times since upgrading to focal from 19.04 I've found my
computer entirely unresponsive for periods of twenty or thirty seconds.
No mouse movement, no keyboard input, the screen output does not change.
My computer was using swap
apport information
** Attachment added: "Card0.Codecs.codec.0.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324038/+files/Card0.Codecs.codec.0.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324043/+files/Lsusb.txt
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1861359
apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324042/+files/Lspci.txt
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https://bugs.launchpad.net/bugs/1861359
apport information
** Attachment added: "Card0.Codecs.codec.2.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324039/+files/Card0.Codecs.codec.2.txt
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apport information
** Attachment added: "ArecordDevices.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324035/+files/ArecordDevices.txt
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apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1861359/+attachment/5324036/+files/CRDA.txt
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https://bugs.launchpad.net/bugs/1861359
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