On Wed, Jul 04, 2012 at 11:53:46PM +0200, Ralf Hildebrandt wrote:
> I'm encountering frequent qmgr crashes with postfix-2.10-20120630:
>
> Jul 4 19:20:27 mail postfix/qmgr[25825]: panic: vstream_buf_alloc: attempt
> to shrink non-empty buffer
> Jul 4 19:20:28 mail postfix/master[2383]: warning: process
> /usr/lib/postfix/qmgr pid 25825 killed by signal 6
>
> Jul 4 19:39:15 mail postfix/qmgr[6531]: panic: vstream_buf_alloc: attempt to
> shrink non-empty buffer
> Jul 4 19:39:16 mail postfix/master[2383]: warning: process
> /usr/lib/postfix/qmgr pid 6531 killed by signal 6
>
> Jul 4 21:53:21 mail postfix/qmgr[25007]: panic: vstream_buf_alloc: attempt
> to shrink non-empty buffer
> Jul 4 21:53:22 mail postfix/master[2383]: warning: process
> /usr/lib/postfix/qmgr pid 25007 killed by signal 6
If your previous snapshot is 20120520 or earlier, then the issue is likely:
20120527-8
Infrastructure: limited support to shrink VSTREAM buffers.
The change takes place when reading from (a stream for the
first time | an empty buffer) or when writing to (a stream
for the first time | a full buffer). TODO: the change should
also happen after purging or flushing a buffer. File:
util/vstream.c.
So revert to the 0520 snapshot.
--
Viktor.
