Your message dated Sun, 20 May 2018 15:36:16 +0000
with message-id <[email protected]>
and subject line Bug#898088: fixed in libbsd 0.8.7-1.1
has caused the Debian Bug report #898088,
regarding xfce4-session hangs in getrandom if crng not ready
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
898088: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=898088
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: xfce4-session
Version: 4.12.1-6
Severity: important
Dear Maintainer,
xfce4-session calls getrandom without GRND_NONBLOCK and hangs indefinitely if
there is insufficient entropy in the crng pool. See this report on the debian-
user mailing list:
https://lists.debian.org/debian-user/2018/05/msg00563.html
Procedure to reproduce is to login at the lightdm prompt on a freshly-booted
system. Credentials are accepted and login hangs indefinitely until sufficient
entropy is available through, for example, wiggling a mouse. I can reproduce
this hang on a fresh buster VM installed from the May 14 weekly iso.
Test kernel:
Linux getrandom-testing 4.16.0-1-amd64 #1 SMP Debian
4.16.5-1+getrandom+printk+dump+stack (2018-05-08) x86_64 GNU/Linux
This kernel is 4.16.5-1 plus these two patches (against torvalds/linux master
but they apply cleanly against the stable tree):
https://github.com/bencaradocdavies/linux/commit/f0dfb0b7b72e38093aeaa67fe1116b409c1db3dc
https://github.com/bencaradocdavies/linux/commit/19e47d7049c6ca94b98cf8c00bbeb2384a9c43b9
https://github.com/bencaradocdavies/linux/tree/getrandom-printk-dump-stack
The evidence seen in the journal when booting with "debug" and not "quiet" on
the kernel command line:
May 19 11:09:39 getrandom-testing kernel: random: xfce4-session: getrandom
without GRND_NONBLOCK while crng not ready
May 19 11:09:39 getrandom-testing kernel: CPU: 0 PID: 587 Comm: xfce4-session
Not tainted 4.16.0-1-amd64 #1 Debian 4.16.5-1+getrandom+printk+dump+stack
May 19 11:09:39 getrandom-testing kernel: Hardware name: QEMU Standard PC
(i440FX + PIIX, 1996), BIOS 1.11.1-1 04/01/2014
May 19 11:09:39 getrandom-testing kernel: Call Trace:
May 19 11:09:39 getrandom-testing kernel: dump_stack+0x5c/0x85
May 19 11:09:39 getrandom-testing kernel: SyS_getrandom+0xab/0xc0
May 19 11:09:39 getrandom-testing kernel: do_syscall_64+0x6c/0x130
May 19 11:09:39 getrandom-testing kernel:
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
May 19 11:09:39 getrandom-testing kernel: RIP: 0033:0x7fdb3e1038f9
May 19 11:09:39 getrandom-testing kernel: RSP: 002b:00007ffd434e7ba8 EFLAGS:
00000246 ORIG_RAX: 000000000000013e
May 19 11:09:39 getrandom-testing kernel: RAX: ffffffffffffffda RBX:
0000000000000028 RCX: 00007fdb3e1038f9
May 19 11:09:39 getrandom-testing kernel: RDX: 0000000000000000 RSI:
0000000000000028 RDI: 00007ffd434e7cb0
May 19 11:09:39 getrandom-testing kernel: RBP: 00007fdb41e02a00 R08:
0000000000000000 R09: 0000000000000000
May 19 11:09:39 getrandom-testing kernel: R10: 00007fdb3d4f0140 R11:
0000000000000246 R12: 00007ffd434e7cb0
May 19 11:09:39 getrandom-testing kernel: R13: 0000000000000002 R14:
0000000000000010 R15: 0000558569895400
Kind regards,
Ben.
-- System Information:
Debian Release: buster/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.16.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en
(charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages xfce4-session depends on:
ii libatk1.0-0 2.28.1-1
ii libc6 2.27-3
ii libcairo2 1.15.10-3
ii libdbus-1-3 1.12.8-2
ii libdbus-glib-1-2 0.110-2
ii libfontconfig1 2.13.0-5
ii libfreetype6 2.8.1-2
ii libgdk-pixbuf2.0-0 2.36.11-2
ii libglib2.0-0 2.56.1-2
ii libgtk2.0-0 2.24.32-1
ii libice6 2:1.0.9-2
ii libpango-1.0-0 1.42.1-1
ii libpangocairo-1.0-0 1.42.1-1
ii libpangoft2-1.0-0 1.42.1-1
ii libpolkit-gobject-1-0 0.105-20
ii libsm6 2:1.2.2-1+b3
ii libwnck22 2.30.7-5.1
ii libx11-6 2:1.6.5-1
ii libxfce4ui-1-0 4.12.1-3
ii libxfce4util7 4.12.1-3
ii libxfconf-0-2 4.12.1-1
ii xfce4-settings 4.12.3-1
ii xfconf 4.12.1-1
Versions of packages xfce4-session recommends:
ii dbus-x11 1.12.8-2
ii libpam-systemd 238-4
ii light-locker 1.8.0-1
ii systemd-sysv 238-4
ii upower 0.99.7-2
ii x11-xserver-utils 7.7+8
ii xfdesktop4 4.12.4-1
ii xfwm4 4.12.4-1
Versions of packages xfce4-session suggests:
pn fortunes-mod <none>
ii sudo 1.8.23-1
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: libbsd
Source-Version: 0.8.7-1.1
We believe that the bug you reported is fixed in the latest version of
libbsd, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Ben Hutchings <[email protected]> (supplier of updated libbsd package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Sun, 20 May 2018 16:45:30 +0200
Source: libbsd
Binary: libbsd-dev libbsd0 libbsd0-udeb
Architecture: source
Version: 0.8.7-1.1
Distribution: unstable
Urgency: medium
Maintainer: Guillem Jover <[email protected]>
Changed-By: Ben Hutchings <[email protected]>
Description:
libbsd-dev - utility functions from BSD systems - development files
libbsd0 - utility functions from BSD systems - shared library
libbsd0-udeb - utility functions from BSD systems - shared library (udeb)
Closes: 898088
Changes:
libbsd (0.8.7-1.1) unstable; urgency=medium
.
* Non-maintainer upload.
* Switch Linux getrandom() usage to non-blocking mode, continuing to use
fallback mechanims if unsuccessful. Closes: #898088
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