** Also affects: lxc (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1303649
Title:
systemd-logind spins in cgmanager_ping_sync()
** Changed in: lxc (Ubuntu)
Status: New = Confirmed
** Changed in: lxc (Ubuntu)
Importance: Undecided = High
** Changed in: systemd (Ubuntu)
Status: New = Confirmed
** Changed in: systemd (Ubuntu)
Importance: Undecided = High
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Actually the source of the problem is that I was calling
nih_dbus_setup(), which actually sets up the mainloop. It is not needed
- as I thought it was - for making *_sync calls from cgmanager-
client.so. So the right fix is to not call that.
Two comments on this. First, nih_dbus_setup() seems
Right. So to be completely clear, by calling nih_dbus_setup(), nih was
registering a libdbus handler that runs on the client side such that
whenever libdbus deemed necessary, it would attempt to wake up the
clients main loop by calling nih_main_loop_interrupt(). However, since
the client didn't
** Branch linked: lp:ubuntu/trusty-proposed/systemd
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https://bugs.launchpad.net/bugs/1303649
Title:
systemd-logind spins in cgmanager_ping_sync()
To manage notifications
This bug was fixed in the package lxc - 1.0.3-0ubuntu2
---
lxc (1.0.3-0ubuntu2) trusty; urgency=medium
* Cherry-pick upstream fix for cgmanager integration. (LP: #1303649)
-- Stephane Graber stgra...@ubuntu.com Fri, 11 Apr 2014 12:17:41 -0400
** Changed in: lxc (Ubuntu)
** Changed in: libnih (Ubuntu)
Status: Confirmed = Invalid
** Changed in: cgmanager (Ubuntu)
Status: Confirmed = Invalid
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This bug was fixed in the package systemd - 204-5ubuntu19
---
systemd (204-5ubuntu19) trusty; urgency=medium
* cgmanager: don't call nih_dbus_setup() since we won't use the
nih_mainloop(). (LP: #1303649)
-- Serge Hallyn serge.hal...@ubuntu.com Fri, 11 Apr 2014 10:17:04
The stacktrace suggests we are in libcgmanager, so adding a cgmanager
task.
** Also affects: cgmanager (Ubuntu)
Importance: Undecided
Status: New
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It turns out the write() is not a part of the dbus transaction with
cgmanager, but actually a part of libnih's mainloop exiting code:
(gdb) where
#0 0x7f70ea509700 in __write_nocancel () at
../sysdeps/unix/syscall-template.S:81
#1 0x7f70eae47377 in nih_main_loop_interrupt
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