This bug was fixed in the package systemd - 247.3-1ubuntu4
---------------
systemd (247.3-1ubuntu4) hirsute; urgency=medium
[ Dimitri John Ledkov ]
*
d/p/debian/UBUNTU-resolved-Mitigate-DVE-2018-0001-by-retrying-NXDOMAIN-with.patch:
Patch updated to reduce log level to debug
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=299002546ec2d62e7f0dd7d614ba958fc9df83c2
[ Dan Streetman ]
* d/p/lp1906331-sd-event-ref-event-loop-while-in-sd_event_prepare-ot.patch:
Take event reference while processing (LP: #1906331)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=1bc38abcd3b62d317fcb62b72e26d9cb2e35ccf9
* d/p/lp1917458-udev-rules-add-rule-to-create-dev-ptp_hyperv.patch:
Create symlink for hyperv-provided ptp device (LP: #1917458)
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=8f1ee790ad66395457ca64cb5f8a01fdd8aabe47
[ Balint Reczey ]
* Pick proposed patch for not returning early in udevadm (LP: #1914062)
File: debian/patches/lp1914062-udevadm-don-t-return-early.patch
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=d8c80751a97b0c6c4df972f6f8325293aa1607c4
* debian/tests/control: Mark systemd-fsckd flaky again.
As promised in LP: 1915126, until further investigation.
File: debian/tests/control
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/systemd/commit/?id=68fbaab272af81aab29497f7c6a3e4e6e9aa091b
-- Balint Reczey <rbal...@ubuntu.com> Thu, 04 Mar 2021 12:19:05 +0100
** Changed in: systemd (Ubuntu Hirsute)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1906331
Title:
systemd-resolve crashes fairly often (and reports various assertions)
Status in systemd package in Ubuntu:
Fix Released
Status in systemd source package in Focal:
In Progress
Status in systemd source package in Groovy:
In Progress
Status in systemd source package in Hirsute:
Fix Released
Bug description:
[impact]
systemd-resolved crashes
[test case]
see original description; I can't reproduce so I'm relying on the
reporter(s) to test/verify.
[regression potential]
any regression would likely occur while processing sd_event objects,
which are used throughout systemd code; this could result in crashes
in almost any part of systemd code. However a more likely regression
would be leaks of sd_event objects due to failure to release the final
ref for an object.
[scope]
This is needed for f/g/h
This might be fixed by upstream commit
f814c871e65df8552a055dd887bc94b074037833; if so, that commit isn't
included in any systemd release yet, and so is needed in h and
earlier.
[other info]
I believe this is caused by a freed sd_event object that is then
processed and calls the on_query_timeout callback with invalid state,
leading to failed assertion, which causes resolved to crash; that's
what analysis of the crash dump appears to indicate. This may be fixed
by the upstream commit referenced in [scope], which takes additional
refs during function calls. However I haven't reproduced this myself,
so I'm only guessing as to the cause and solution at this point.
I'm unsure why this would not occur in bionic, but per comment 5 it
seems it doesn't happen in that release.
[original description]
(Tested on regularly updated Ubuntu 20.04, currently i use systemd
245.4-4ubuntu3.2)
I observe fairly lot of segfaults of systemd-resolve. Frequency vary
but … see below.
I have no clue what is the reason. Specific feature of my machine is
that apart from normal cable connection (to OpenWRT router) I use
OpenVPN for business network (and this submits specific nameserver for
myorg.local domain).
~~~~~
$ LC_ALL=C dmesg -T --level=info | grep systemd-resolve
[Sun Nov 29 11:47:37 2020] systemd-resolve[1629307]: segfault at 190eed7bdc6
ip 00007fd98f771dc9 sp 00007ffc2352a100 error 4 in
libsystemd-shared-245.so[7fd98f74c000+16e000]
[Sun Nov 29 11:57:27 2020] systemd-resolve[1629787]: segfault at 1f ip
000055ab7b0cb686 sp 00007fff78ce4bd0 error 4 in
systemd-resolved[55ab7b0a4000+3e000]
[Sun Nov 29 12:07:37 2020] systemd-resolve[1630481]: segfault at 191 ip
000055ca69fed91c sp 00007ffc4d757dc0 error 6 in
systemd-resolved[55ca69fc2000+3e000]
[Sun Nov 29 13:12:26 2020] systemd-resolve[1638829]: segfault at 19224162371
ip 00007fc1bc9b9dc9 sp 00007ffc21378170 error 4 in
libsystemd-shared-245.so[7fc1bc994000+16e000]
[Sun Nov 29 13:32:57 2020] systemd-resolve[1639886]: segfault at 1926d8126d3
ip 00007f7ed17e9dc9 sp 00007ffda2cea0b0 error 4 in
libsystemd-shared-245.so[7f7ed17c4000+16e000]
[Sun Nov 29 13:42:37 2020] systemd-resolve[1640246]: segfault at 61 ip
0000558d992e2686 sp 00007fff08906af0 error 4 in
systemd-resolved[558d992bb000+3e000]
[Sun Nov 29 15:42:26 2020] systemd-resolve[1645397]: segfault at 1943c92afc7
ip 00007fd4c1721dc9 sp 00007fff25259ce0 error 4 in
libsystemd-shared-245.so[7fd4c16fc000+16e000]
[Sun Nov 29 16:02:36 2020] systemd-resolve[1646052]: segfault at 1947ecb3726
ip 00007f1008549dc9 sp 00007fff44a6db70 error 4 in
libsystemd-shared-245.so[7f1008524000+16e000]
[Sun Nov 29 17:42:35 2020] systemd-resolve[1649403]: segfault at 71 ip
000055a37fe5a686 sp 00007ffd9a160440 error 4 in
systemd-resolved[55a37fe33000+3e000]
[Sun Nov 29 17:52:35 2020] systemd-resolve[1649759]: segfault at 558d292947d0
ip 0000558d292947d0 sp 00007ffec7ab3bf8 error 15
[Sun Nov 29 19:17:55 2020] systemd-resolve[1652349]: segfault at 558995b77cf0
ip 0000558995b77cf0 sp 00007ffe545ae4a8 error 15
[Sun Nov 29 19:32:35 2020] systemd-resolve[1652640]: segfault at 19773c20194
ip 00007f66bb529dc9 sp 00007fffd7066fc0 error 4 in
libsystemd-shared-245.so[7f66bb504000+16e000]
[Sun Nov 29 20:03:54 2020] systemd-resolve[1653715]: segfault at 197e3aee918
ip 00007fdc40b51dc9 sp 00007ffde484fbf0 error 4 in
libsystemd-shared-245.so[7fdc40b2c000+16e000]
[Sun Nov 29 20:22:24 2020] systemd-resolve[1654540]: segfault at 19820a05297
ip 00007f6a92839dc9 sp 00007ffe4ba00440 error 4 in
libsystemd-shared-245.so[7f6a92814000+16e000]
[Sun Nov 29 21:13:10 2020] systemd-resolve[1660272]: segfault at 555f9a5915e0
ip 0000555f9a5915e0 sp 00007fff053e5e68 error 15
[Sun Nov 29 21:32:34 2020] systemd-resolve[1661026]: segfault at 1991af73f2e
ip 00007ff194021dc9 sp 00007fffa6d61680 error 4 in
libsystemd-shared-245.so[7ff193ffc000+16e000]
[Sun Nov 29 22:03:20 2020] systemd-resolve[1661941]: segfault at 5625966828e0
ip 00005625966828e0 sp 00007ffdf5a8bb48 error 15
[Sun Nov 29 22:32:44 2020] systemd-resolve[1662604]: segfault at 199f18ae01d
ip 00007f457c9d1dc9 sp 00007ffc62b80ef0 error 4 in
libsystemd-shared-245.so[7f457c9ac000+16e000]
[Sun Nov 29 23:12:23 2020] systemd-resolve[1664072]: segfault at 73b8 ip
0000562619f8c93a sp 00007ffd527b7ef0 error 6 in
systemd-resolved[562619f61000+3e000]
[Sun Nov 29 23:22:34 2020] systemd-resolve[1664423]: segfault at 19aaa4d4c00
ip 00007f2621539dc9 sp 00007ffc73102280 error 4 in
libsystemd-shared-245.so[7f2621514000+16e000]
[Mon Nov 30 00:12:23 2020] systemd-resolve[1666158]: segfault at 19b5c72000a
ip 00007f530b5c1dc9 sp 00007ffc6007ccf0 error 4 in
libsystemd-shared-245.so[7f530b59c000+16e000]
[Mon Nov 30 00:47:54 2020] systemd-resolve[1667280]: segfault at 100000036 ip
00007f0736b8bbe8 sp 00007fffed4d3cb0 error 4 in
libsystemd-shared-245.so[7f0736acc000+16e000]
[Mon Nov 30 01:57:53 2020] systemd-resolve[1669463]: segfault at 558d6b61c0c0
ip 0000558d6b61c0c0 sp 00007ffc68df7198 error 15
[Mon Nov 30 02:58:08 2020] traps: systemd-resolve[1672553] general protection
fault ip:55b967d86760 sp:7fffaecf4468 error:0 in
systemd-resolved[55b967d5f000+3e000]
[Mon Nov 30 03:38:08 2020] systemd-resolve[1673682]: segfault at 19e3c4d5050
ip 00007fdf0ba29dc9 sp 00007ffe4d561430 error 4 in
libsystemd-shared-245.so[7fdf0ba04000+16e000]
[Mon Nov 30 05:07:22 2020] systemd-resolve[1681387]: segfault at 7f7e31c39c10
ip 00007f7e31c39c10 sp 00007ffe5ad31f58 error 15 in
libc-2.31.so[7f7e31c39000+3000]
[Mon Nov 30 05:47:43 2020] systemd-resolve[1682761]: segfault at 1a00b86dff0
ip 00007f69066c9dc9 sp 00007fff079c4fd0 error 4 in
libsystemd-shared-245.so[7f69066a4000+16e000]
[Mon Nov 30 06:17:42 2020] systemd-resolve[1684158]: segfault at 1a070831ad3
ip 00007f308aa19dc9 sp 00007fffa7de12e0 error 4 in
libsystemd-shared-245.so[7f308a9f4000+16e000]
[Mon Nov 30 06:27:21 2020] systemd-resolve[1684457]: segfault at 1a094465eb1
ip 00007f751c9b9dc9 sp 00007ffee6452930 error 4 in
libsystemd-shared-245.so[7f751c994000+16e000]
[Mon Nov 30 07:12:21 2020] systemd-resolve[1685888]: segfault at 1a13a2db693
ip 00007f7dfb029dc9 sp 00007ffeb5f30600 error 4 in
libsystemd-shared-245.so[7f7dfb004000+16e000]
[Mon Nov 30 08:17:21 2020] traps: systemd-resolve[1688510] general protection
fault ip:559181bc2760 sp:7fff2ea2f1d8 error:0 in
systemd-resolved[559181b9b000+3e000]
[Mon Nov 30 08:27:31 2020] systemd-resolve[1691391]: segfault at 1a2475be1c2
ip 00007fd38b271dc9 sp 00007ffdc116dad0 error 4 in
libsystemd-shared-245.so[7fd38b24c000+16e000]
[Mon Nov 30 08:58:25 2020] systemd-resolve[1692357]: segfault at 1a2af5e7f63
ip 00007fbae5c81dc9 sp 00007ffdc36e31a0 error 4 in
libsystemd-shared-245.so[7fbae5c5c000+16e000]
[Mon Nov 30 10:02:20 2020] systemd-resolve[1697183]: segfault at 208 ip
000055f232f3793a sp 00007ffc9fad5230 error 6 in
systemd-resolved[55f232f0c000+3e000]
[Mon Nov 30 10:12:20 2020] systemd-resolve[1697500]: segfault at 1a3be1bb4b4
ip 00007fbd22749dc9 sp 00007ffec3404b30 error 4 in
libsystemd-shared-245.so[7fbd22724000+16e000]
[Mon Nov 30 11:17:30 2020] systemd-resolve[1701684]: segfault at 1a4a6e7be98
ip 00007f8a6c801dc9 sp 00007ffea4117850 error 4 in
libsystemd-shared-245.so[7f8a6c7dc000+16e000]
[Mon Nov 30 12:58:18 2020] systemd-resolve[1707203]: segfault at
ffffffff00000020 ip 000055bdf867d686 sp 00007ffe2d636bb0 error 5 in
systemd-resolved[55bdf8656000+3e000]
[Mon Nov 30 14:25:41 2020] systemd-resolve[1710420]: segfault at 1a7426fba1a
ip 00007f2a1e869dc9 sp 00007ffec5869d40 error 4 in
libsystemd-shared-245.so[7f2a1e844000+16e000]
[Mon Nov 30 14:52:39 2020] systemd-resolve[1712923]: segfault at 55f7d8f636e8
ip 000055f7d8f636e8 sp 00007ffce3c1f528 error 15
[Mon Nov 30 15:02:29 2020] systemd-resolve[1713448]: segfault at 1a7c60ef1a0
ip 00007f173d8f1dc9 sp 00007ffc715163d0 error 4 in
libsystemd-shared-245.so[7f173d8cc000+16e000]
[Mon Nov 30 15:14:18 2020] systemd-resolve[1714394]: segfault at 54 ip
00007f3806f89dc9 sp 00007ffea68d70e0 error 4 in
libsystemd-shared-245.so[7f3806f64000+16e000]
[Mon Nov 30 15:42:18 2020] systemd-resolve[1715906]: segfault at 100000003 ip
00007fe65ee59dc9 sp 00007ffe0f486460 error 4 in
libsystemd-shared-245.so[7fe65ee34000+16e000]
[Mon Nov 30 16:02:39 2020] systemd-resolve[1717460]: segfault at 7 ip
00007f5a4de19dc9 sp 00007ffd1fa46490 error 4 in
libsystemd-shared-245.so[7f5a4ddf4000+16e000]
[Mon Nov 30 16:22:28 2020] systemd-resolve[1719182]: segfault at 1a8e42924e4
ip 00007faa5c251dc9 sp 00007ffedcf4c120 error 4 in
libsystemd-shared-245.so[7faa5c22c000+16e000]
[Mon Nov 30 16:37:18 2020] systemd-resolve[1719462]: segfault at 1f ip
0000557e68947686 sp 00007ffd6ec75570 error 4 in
systemd-resolved[557e68920000+3e000]
[Mon Nov 30 17:43:02 2020] traps: systemd-resolve[1722859] general protection
fault ip:5575fa1388d4 sp:7ffd0835bce0 error:0 in
systemd-resolved[5575fa10d000+3e000]
[Mon Nov 30 18:12:48 2020] systemd-resolve[1725814]: segfault at 55b69de577c8
ip 000055b69de577c8 sp 00007ffee9d70f18 error 15
[Mon Nov 30 18:37:38 2020] systemd-resolve[1727788]: segfault at 74756f666d
ip 00005563cd41091c sp 00007ffd51addc90 error 6 in
systemd-resolved[5563cd3e5000+3e000]
[Mon Nov 30 18:48:02 2020] systemd-resolve[1728444]: segfault at 308 ip
000055b57aa0b93a sp 00007ffeefd7f400 error 6 in
systemd-resolved[55b57a9e0000+3e000]
[Mon Nov 30 19:32:28 2020] systemd-resolve[1730898]: segfault at 5648012b4770
ip 00005648012b4770 sp 00007ffea0bd9e18 error 15
[Mon Nov 30 19:53:01 2020] systemd-resolve[1732347]: segfault at
ffffffff00000020 ip 000055b0ace66686 sp 00007ffc73f3c9d0 error 5 in
systemd-resolved[55b0ace3f000+3e000]
[Mon Nov 30 19:59:17 2020] systemd-resolve[1733001]: segfault at 52dd6b26 ip
00007fafebdf9dc9 sp 00007ffd591cd2a0 error 4 in
libsystemd-shared-245.so[7fafebdd4000+16e000]
[Mon Nov 30 20:27:17 2020] systemd-resolve[1735033]: segfault at 1ac55647a0b
ip 00007fb26ea49dc9 sp 00007ffdd481ff30 error 4 in
libsystemd-shared-245.so[7fb26ea24000+16e000]
[Mon Nov 30 22:42:37 2020] systemd-resolve[1746028]: segfault at 1ae39b02ae4
ip 00007f82f18d9dc9 sp 00007ffc088615b0 error 4 in
libsystemd-shared-245.so[7f82f18b4000+16e000]
[Mon Nov 30 22:57:36 2020] systemd-resolve[1746999]: segfault at 1ae6963116c
ip 00007f85cc831dc9 sp 00007ffce6f3f5f0 error 4 in
libsystemd-shared-245.so[7f85cc80c000+16e000]
[Tue Dec 1 00:22:16 2020] traps: systemd-resolve[1862379] general protection
fault ip:55fb9c6b3760 sp:7fff017519a8 error:0 in
systemd-resolved[55fb9c68c000+3e000]
[Tue Dec 1 00:57:16 2020] systemd-resolve[1905008]: segfault at 1b015f1c2e7
ip 00007f47185b1dc9 sp 00007ffd899bd1a0 error 4 in
libsystemd-shared-245.so[7f471858c000+16e000]
~~~~~
I also noted various interesting assertions in journal, in next
comment…
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