I believe this bug describes asterisk bug #17255 :
https://issues.asterisk.org/view.php?id=17255
It would seem that after some SIP calls, udp sockets are not closed.
If left running too long, you may see the following in asterisk's log (
a few million times a minute ) :
[2011-08-09 09:20:02.775] ERROR[5081] res_timing_timerfd.c: Read error: Bad
file descriptor
[2011-08-09 09:20:02.775] DEBUG[5081] res_timing_timerfd.c: Expected to
acknowledge 1 ticks but got 0 instead
[2011-08-09 09:20:02.775] ERROR[5081] res_timing_timerfd.c: Read error: Bad
file descriptor
[2011-08-09 09:20:02.775] DEBUG[5081] res_timing_timerfd.c: Expected to
acknowledge 1 ticks but got 0 instead
[2011-08-09 09:20:02.775] ERROR[5081] res_timing_timerfd.c: Read error: Bad
file descriptor
[2011-08-09 09:20:02.775] DEBUG[5081] res_timing_timerfd.c: Expected to
acknowledge 1 ticks but got 0 instead
[2011-08-09 09:20:02.775] ERROR[5081] res_timing_timerfd.c: Read error: Bad
file descriptor
[2011-08-09 09:20:02.775] DEBUG[5081] res_timing_timerfd.c: Expected to
acknowledge 1 ticks but got 0 instead
[2011-08-09 09:20:02.775] ERROR[5081] res_timing_timerfd.c: Read error: Bad
file descriptor
[2011-08-09 09:20:02.775] DEBUG[5081] res_timing_timerfd.c: Expected to
acknowledge 1 ticks but got 0 instead
The resource exhaustion eventually leads to Asterisk being unable to
function as it will either run out of UDP sockets or return errors about
open files.
root@ast-1:/var/log/asterisk# lsof | grep asterisk | grep UDP | wc
121 1089 11004
It has 121 sockets open, but only one call in progress.
Running asterisk : Connected to Asterisk 1.6.2.5-0ubuntu1.4 currently
running on pri1 (pid = 5132)
** Bug watch added: Asterisk Issue Tracker #17255
https://issues.asterisk.org/view.php?id=17255
** Also affects: asterisk via
https://issues.asterisk.org/view.php?id=17255
Importance: Unknown
Status: Unknown
** This bug has been flagged as a security vulnerability
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https://bugs.launchpad.net/bugs/816287
Title:
Asterisk UDP ports not freed/ports leaking [ upstream patch available
]
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