syncserver: Fatal error: Virtual memory exhausted
brong at fastmail.fm
Wed Apr 18 07:16:38 EDT 2007
On Tue, Apr 17, 2007 at 04:28:04PM -0400, Wesley Craig wrote:
> You probably encountered a single very large mailbox. This patch:
> --- cyrus-imapd-2.3.8/imap/sync_support.c 2006-11-30
> 12:11:20.000000000 -0500
> +++ cyrus-imapd-2.3.8p3/imap/sync_support.c 2007-04-12
> 13:27:49.000000000 -0400
> @@ -914,9 +914,9 @@
> result = xzmalloc(sizeof(struct sync_message));
> - result->msg_path = xzmalloc(5 * (MAX_MAILBOX_PATH+1) * sizeof
> + result->msg_path = xzmalloc((MAX_MAILBOX_PATH+1) * sizeof(char));
> result->msg_path_end = result->msg_path +
> - 5 * (MAX_MAILBOX_PATH+1) * sizeof(char);
> + (MAX_MAILBOX_PATH+1) * sizeof(char);
> snprintf(result->stagename, sizeof(result->stagename), "%lu.",
> Reduces the space that sync_server allocates when syncing a mailbox.
> The "5 *" doesn't really do anything useful, other than waste a lot
> of space.
That's only a factor of 5 fix. The real problem is that there's an
unbounded stream size that will be fed into sync_server. I have a
patch that limits it to 1000, and it's been accepted upstream since.
If you're using 2.3.8 just add:
to your imapd.conf (or any other value - this works fine for me)
The above patch is probably fine too, but I still prefer to stop the
unbounded edge case regardless.
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