[PATCH] clean the event context after fork in fork_domain_child()

Stefan (metze) Metzmacher metze at samba.org
Mon Jan 5 13:46:07 GMT 2009


boyang schrieb:
> Stefan (metze) Metzmacher wrote:
>> Hi BoYang,
>>
>>   
>>>      The point here is that there maybe outstanding requests in parent,
>>> and async_request_timeout is set, which cause this child try to kill
>>> some other child, probably be primary domain's child. Look, After
>>> winbindd started, child for primary domain is forked, then other domains
>>> such as BUILTIN. If there are outstanding requests sent to child for
>>> primary domain, async_request_timeout handler is set, which is
>>> inheritted in child for domain BUILTIN. Later, time expired and child
>>> for BUILTIN sends SIGTERM to child for primary domain.
>>>      Patches are in the attachment, Thanks!
>>>     
>> I think the real solution is to create a new event context in the child
>> process (and free the parents context). In the end we should do that
>> also within smbd...
>>
>> metze
>>   
> Hi, Metze:
>      I've finished the patch to clean event context after fork. Please
> review it. In event_context_reinit(ev), I freed all timed_event and
> fd_event to save some memory. Initial test and 'make test' looks fine.

Thanks!

I think freeing the events is dangerous, as it leaves broken pointers
around.

I integrated it without freeing the events and your krb5 ticket patch
in this branch:
http://gitweb.samba.org/?p=metze/samba/wip.git;a=shortlog;h=refs/heads/master3-tevent3

It would be nice if you could test if that branch fixes still fixes all
the problems you wanted to resolve.

metze

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 252 bytes
Desc: OpenPGP digital signature
Url : http://lists.samba.org/archive/samba-technical/attachments/20090105/9d96f2f8/signature.bin


More information about the samba-technical mailing list