Public bug reported:
We have 1 server (among hundreds) that its ntp service is crashing.
A few minute/seconds after a start attempts we can see the following in syslog:
Jul 1 05:33:28 svpr-stk67 ntpd[2729]: peers refreshed
Jul 1 05:33:28 svpr-stk67 ntpd[2729]: Listening on routing socket on fd #49 for
interface updates
Jul 1 05:36:32 svpr-stk67 ntpd[2729]: i/o error on routing socket No buffer
space available - disabling
Jul 1 05:36:32 svpr-stk67 kernel: [157516.495224] ntpd[2729]: segfault at 31 ip
0000000000000031 sp 00007ffff9f11788 error 14 in
libpthread-2.15.so[7f967a5d9000+18000]
OS: Ubuntu 12.04.4 LTS
Kernel: 3.11.0-19-generic
I tried to compare it to other servers, and the only thing I could find that is
different is that while it's up (before it crashes) I can see the following
when running "lsof | grep ntp":
ntpd 2729 ntp 49u sock 0,7 0t0 2473952565 can't identify protocol.
** Affects: ntp (Ubuntu)
Importance: Undecided
Assignee: eric.desrochers (eric-desrochers-z)
Status: New
** Changed in: ntp (Ubuntu)
Assignee: (unassigned) => eric.desrochers (eric-desrochers-z)
** Summary changed:
- Use-after-free in routing socket code after dropping root
+ NTP : Use-after-free in routing socket code after dropping root
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https://bugs.launchpad.net/bugs/1481388
Title:
NTP : Use-after-free in routing socket code after dropping root
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