tags 833013 + wheezy thanks Hi,
On Sat, Jul 30, 2016 at 11:16:29PM +0200, Antoine Sirinelli wrote: > Since the latest security update, collected cannot load anymore the > network plugin. Since this plugin is used to transfer the measurements > to other hosts, it makes collectd completely useless for me. > > Here is the error messages: > > network plugin: gcry_control (GCRYCTL_SET_THREAD_CBS) failed: Not supported > Initialization of plugin `network' failed with status -1. Plugin will be > unloaded. Thanks for reporting this. That failure is a regression in 5.1.0-3+deb7u1 but it seems to have surfaced an actual (potentially severe) underlying issue that already existed before. It's specific to Wheezy. Just before the collectd error messages, you should see the following in syslog: Libgcrypt warning: missing initialization - please fix the application What happens is that gcrypt (apparently) is initialized before the call to gcry_control(GCRYCTL_SET_THREAD_CBS). Since that call is then trying to change the settings in an unsupported way (cannot change threading behavior after initialization), we're seeing this error. Now, the actual problem is that this means gcrypt is not initialized correctly. Given the multi-threaded nature of collectd, I believe that this may potentially mean undefined behavior or crashes in the gcrypt code in the network plugin. I'll need to dig further into why this is happening in the first place (why is gcrypt already initialized at this point?). Cheers, Sebastian -- Sebastian "tokkee" Harl +++ GnuPG-ID: 0x2F1FFCC7 +++ http://tokkee.org/ Those who would give up Essential Liberty to purchase a little Temporary Safety, deserve neither Liberty nor Safety. -- Benjamin Franklin
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