Panic: file istream.c: line 167 with 2.2.13 + istream.c/.h from dovecot-2-2-dffc6dd2be0d

[Timo Sirainen]

On 6.7.2014, at 12.07, Toni Mattila <toni at solu.fi> wrote:

> Getting following panics with traces:
> Jul  6 08:11:52 dovecot: imap(user at domain.tld): Error: Cached message size smaller than expected (1782 < 1872)
> Jul  6 08:11:52 dovecot: imap(user at domain.tld): Error: Maildir filename has wrong S value, renamed the file from /path/cencored/Maildir/cur/1201713258.3136.host.cencored.fi,S=1782:2,S to /path/cencored/Maildir/cur/1201713258.3136.host.cencored.fi,S=1872:2,S
> Jul  6 08:11:52 dovecot: imap(user at domain.tld): Error: Corrupted index cache file /path/cencored/Maildir/dovecot.index.cache: Broken physical size for mail UID 5758
> Jul  6 08:11:52 dovecot: imap(user at domain.tld): Error: read(/path/cencored/Maildir/cur/1201713258.3136.host.cencored.fi,S=1782:2,S) failed: Invalid argument
> Jul  6 08:11:52 dovecot: imap(user at domain.tld): Error: read(/path/cencored/Maildir/cur/1201713258.3136.host.cencored.fi,S=1782:2,S) failed: Invalid argument (uid=5758)

This is intended.

> Jul  6 08:11:52 dovecot: imap(user at domain.tld): Panic: file istream.c: line 167 (i_stream_read): assertion failed: (old_size <= _stream->pos - _stream->skip)

This isn't intended, but I can't seem to be able to reproduce the crash. What's your doveconf -n output?

> These can of course be fixed with maildir-size-fix.pl and deleting dovecot index files, but there are thousands like these. Dovecot 1.2 didn't have any issues with these old maildirs transfered over from courierimap.

maildir_broken_filename_sizes=yes restores the old behavior.