September 2020 - openSUSE Kernel Bugs - openSUSE Mailing Lists

[kernel-bugs] [Bug 1159882] Excessive swapping when buffers / cache expand beyond free physical RAM
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1159882 http://bugzilla.opensuse.org/show_bug.cgi?id=1159882#c31 --- Comment #31 from Robert Delahunt <radelahunt(a)gmail.com> --- I ran the dd exercise booting into the OpenSUSE LEAP 15.2 debug kernel. The dmesg output: http://www.puresimplicity.net/~delahunt/vmstat/dmesg_debug.txt Is the result of doing so and then running the dd command. Logs filled up pretty quick, etc. Hope this helps someone debug the problem. -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1159882] Excessive swapping when buffers / cache expand beyond free physical RAM
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1159882 http://bugzilla.opensuse.org/show_bug.cgi?id=1159882#c30 --- Comment #30 from Robert Delahunt <radelahunt(a)gmail.com> --- Would you recommend the user (me) build or install one of the newer Linux kernels? Do you have a specific version or tree that you would prefer I attempt to build or install? Please let me know. I may decide, some time today, to grab the latest stable Linux kernel and build it anyways, just for "fun," after my class today. -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1159882] Excessive swapping when buffers / cache expand beyond free physical RAM
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1159882 http://bugzilla.opensuse.org/show_bug.cgi?id=1159882#c29 Andrei Borzenkov <arvidjaar(a)gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |arvidjaar(a)gmail.com --- Comment #29 from Andrei Borzenkov <arvidjaar(a)gmail.com> --- (In reply to Miroslav Beneš from comment #26) > It is not surprising to see it strikes 15.2 too. The original bug was > reported against 5.3 kernel, which is in 15.2. It got somehow fixed in 5.6 > at the latest. We may try to find the fixes but they may be too intrusive to > backport. > The commit 2c012a4ad1a2cd3fb5a0f9307b9d219f84eda1fa mentioned in comment #14 was effectively removed in commit b91ac374346ba206cfd568bb0ab830af6b205cfd which went into 5.5. I actually observed quite similar symptoms in Ubuntu 18.04 as soon as it bumped HWE kernel to 5.3 and had to install 5.5 (5.4 had the same issue). I do not know if b91ac374346ba206cfd568bb0ab830af6b205cfd alone can be back ported but may be 2c012a4ad1a2cd3fb5a0f9307b9d219f84eda1fa could be reverted as this is what happened in upstream anyway. -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1159882] Excessive swapping when buffers / cache expand beyond free physical RAM
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1159882 http://bugzilla.opensuse.org/show_bug.cgi?id=1159882#c28 --- Comment #28 from Robert Delahunt <radelahunt(a)gmail.com> --- Please note that I had set vm.vfs_cache_pressure=200 on this installation, so both the vmstat results above were while vfs_cache_pressure=200. I noticed that, while the system ran mostly fine with this set and with no swap, at boot sometimes the system seems to have some sort of deep process bogging down, as the keyboard (for instance) seems to not register every 5th key or so. I have to very closely watch the asterisks on log-in pages or else it throws off password typing, etc. Might be an unrelated bug, not sure. I expect that, because this laptop is brand new, there might be some early kernel bugs or new hardware issues, and I'd absolutely love to help out in any way I can. Even if it means running a debug kernel, if you can show me how. I have enabled multiple ACPI and other kernel boot time parameters in the boot command line to see if maybe one of these helps us find the problem. -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1159882] Excessive swapping when buffers / cache expand beyond free physical RAM
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1159882 http://bugzilla.opensuse.org/show_bug.cgi?id=1159882#c27 --- Comment #27 from Robert Delahunt <radelahunt(a)gmail.com> --- I had reinstalled OpenSUSE LEAP 15.2 using the DVD but with network enabled, so what I should've gotten was a fresh installation of the most current stable OpenSUSE LEAP 15.2. VMSTAT information as requested: http://www.puresimplicity.net/~delahunt/vmstat/swapon/ http://www.puresimplicity.net/~delahunt/vmstat/swapoff/ Basically, I had reinstalled OpenSUSE LEAP 15.2 with the LUKS-contained LVM of /dev/system/home and /dev/system/swap but I had deleted the LV of swap and ran the system without swap. So the swapoff is a recording of vmstat while I was doing dd if=/dev/zero of=/dev/sdb bs=4K status=progress and the swapon directory is after I went back into the partitioner, recreated the swap LV, turned swap on, then ran the dd command above all over again. The system immediately dug into swap to about the 40MB mark. Running free -m second by second, I could see available RAM plummet and swap climb. I put other assorted diagnostic information in http://www.puresimplicity.net/~delahunt/vmstat such as dmesg, cpuinfo, lsmod, rpms, etc. I noted that the partitioner installed a package called nvme-cli-1.10-lp152.1.3.x86_64 when I clicked "accept" to add the swap LV. I am very determined to help get this fixed, so please notify me immediately if there's anything else I can help with. -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1176770] Kernel 5.8.9/5.8.8 submission breaks installation/parted
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

https://bugzilla.suse.com/show_bug.cgi?id=1176770 https://bugzilla.suse.com/show_bug.cgi?id=1176770#c1 Jiri Slaby <jslaby(a)suse.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED CC| |jslaby(a)suse.com Resolution|--- |FIXED --- Comment #1 from Jiri Slaby <jslaby(a)suse.com> --- Pushed, thanks. -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1176770] New: Kernel 5.8.9/5.8.8 submission breaks installation/parted
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1176770 Bug ID: 1176770 Summary: Kernel 5.8.9/5.8.8 submission breaks installation/parted Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Major Priority: P5 - None Component: Kernel Assignee: kernel-bugs(a)opensuse.org Reporter: rbrown(a)suse.com QA Contact: qa-bugs(a)suse.de Found By: --- Blocker: --- Created attachment 841790 --> http://bugzilla.opensuse.org/attachment.cgi?id=841790&action=edit Screenshot of error from Staging K Media The submission of 5.8.9/5.8.8 to Factory is stuck in staging as a result of breaking all installation tests https://build.opensuse.org/request/show/834173 https://openqa.opensuse.org/tests/1399894#step/start_install/4 The openQA result is not very useful, so I recreated the problem on a local VM, which revealed the problem is coming from parted "Partition(s) 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256 on /dev/sdb have been written, but we have been unable to inform the kernel of the change, probably because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now before making further changes" (Screenshot attached) This seems to suggest that the problem matches https://gitlab.gnome.org/GNOME/gparted/-/issues/111 The investigation documented there suggests we need the following kernel fix to get things working back how they should: https://github.com/torvalds/linux/commit/88ce2a530cc9865a894454b2e40eba5957… -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1159882] Excessive swapping when buffers / cache expand beyond free physical RAM
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1159882 http://bugzilla.opensuse.org/show_bug.cgi?id=1159882#c26 --- Comment #26 from Miroslav Beneš <mbenes(a)suse.com> --- I think it would have been better to open a new bug for Leap 15.2 and link it with this one, but whatever. Let's keep it here. It is not surprising to see it strikes 15.2 too. The original bug was reported against 5.3 kernel, which is in 15.2. It got somehow fixed in 5.6 at the latest. We may try to find the fixes but they may be too intrusive to backport. First, it would be nice to walk through the bug and provide the same info Michal and Vlastimil asked for the original report. That is, vmstat logs, swap on/swap off behaviour and such. -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1159882] Excessive swapping when buffers / cache expand beyond free physical RAM
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

https://bugzilla.suse.com/show_bug.cgi?id=1159882 https://bugzilla.suse.com/show_bug.cgi?id=1159882#c25 --- Comment #25 from Michal Hocko <mhocko(a)suse.com> --- see comment 2 -- You are receiving this mail because: You are the assignee for the bug.

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[kernel-bugs] [Bug 1114588] Keyboard Doesn't Work after resuming from sleep.
by bugzilla_noreply＠suse.com 21 Sep '20

21 Sep '20

http://bugzilla.opensuse.org/show_bug.cgi?id=1114588 http://bugzilla.opensuse.org/show_bug.cgi?id=1114588#c24 --- Comment #24 from Miroslav Beneš <mbenes(a)suse.com> --- Thanks for checking. Could you try what Takashi proposed in comment 16? That is, external USB keyboard and mouse? If it makes any difference... -- You are receiving this mail because: You are the assignee for the bug.

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