** Changed in: lxc (Ubuntu)
Status: Confirmed => Won't Fix
** Changed in: libnih (Ubuntu)
Status: Confirmed => Won't Fix
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I'm not sure 'fix released' is correct. Was a patch posted to fix it?
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Title:
Buffer overflow in cgmanager
Status in cg
** Changed in: cgmanager (Ubuntu)
Status: Confirmed => Fix Released
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Title:
Buffer overflow in cgmanager
Status i
** Tags added: patch
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Title:
Buffer overflow in cgmanager
Status in cgmanager package in Ubuntu:
Confirmed
Status in l
Based on the most recent comments, changing the priority back to
undecided since there is no clear path forward for now.
** Changed in: libnih (Ubuntu)
Importance: High => Undecided
** Changed in: lxc (Ubuntu)
Importance: High => Undecided
** Changed in: cgmanager (Ubuntu)
Status: N
They were all sockets.
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Title:
Buffer overflow in cgmanager
Status in lxc package in Ubuntu:
Incomplete
Bug descripti
What were the fds? (ls -l)
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Title:
Buffer overflow in cgmanager
Status in lxc package in Ubuntu:
Incomplete
Bug desc
Yes I was able to hit 1024 open fd's.
On Mon, Jan 11, 2016 at 9:18 AM, Serge Hallyn <1532...@bugs.launchpad.net>
wrote:
> Can you show 'ls /proc/$(pidof cgmanager)/fd' at a few times?
>
> This is something we've run into with normal operation in go, but since
> cgmanager is not threaded it should
Can you show 'ls /proc/$(pidof cgmanager)/fd' at a few times?
This is something we've run into with normal operation in go, but since
cgmanager is not threaded it should not have so many open fds.
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The stack trace seems to indicate that FD_SETSIZE was exceeded.
Specifically, FD_SET was called with an fd >= 1024 at
http://bazaar.launchpad.net/~scott/libnih/trunk/view/head:/nih/io.c#L176.
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It can happen fairly often. For example, in one case it happened 5 times
within a span of less than 30 minutes.
Jan 8 05:35:04 ip-10-169-176-230 cgmanager[781]: *** buffer overflow detected
***: /sbin/cgmanager terminated
Jan 8 05:40:23 ip-10-169-176-230 cgmanager[15954]: *** buffer overflow
d
Hm, sadly the trace isn't very informative:
Core was generated by `/sbin/cgmanager -m name=systemd'.
Program terminated with signal SIGABRT, Aborted.
#0 0x7fade2d7a267 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:55
55 ../sysdeps/unix/sysv/linux/raise.c: No such
** Attachment added: "/var/crash/_sbin_cgmanager.0.crash"
https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1532314/+attachment/4546429/+files/crash
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