On 18 Oct 2019, at 15.36, Erik de Waard via dovecot <dovecot@dovecot.org> wrote: > > Hi, i'm getting a coredump on a specific msg, i've attached the gdb. > > file on disk i noticed W=<vsize> is missing. > 1571209735.M744550P1608.rwvirtual65,S=15886:2,S .. > mail.log > Oct 18 14:41:39 rwvirtual10 dovecot: imap(john...@company.nl > <mailto:john...@company.nl>)<15868><qjTFpy6VPsMKAAok>: Error: Mailbox > INBOX.Debug: UID=1041: > read(/data/mail/company.nl/users/johndoe/Maildir/.Debug/cur/1571209735.M744550P1608.rwvirtual65,S=15886:2,S > > <http://company.nl/users/johndoe/Maildir/.Debug/cur/1571209735.M744550P1608.rwvirtual65,S=15886:2,S>) > failed: Cached message size smaller than expected (15886 < 16367, > box=INBOX.Debug, UID=1041) (read reason=mail stream) > Oct 18 14:41:39 rwvirtual10 dovecot: imap(john...@company.nl > <mailto:john...@company.nl>)<15868><qjTFpy6VPsMKAAok>: Error: Corrupted > record in index cache file > /data/indexes/john...@company.nl/.Debug/dovecot.index.cache > <http://john...@company.nl/.Debug/dovecot.index.cache>: UID 1041: Broken > physical size in mailbox INBOX.Debug: > read(/data/mail/company.nl/users/johndoe/Maildir/.Debug/cur/1571209735.M744550P1608.rwvirtual65,S=15886:2,S > > <http://company.nl/users/johndoe/Maildir/.Debug/cur/1571209735.M744550P1608.rwvirtual65,S=15886:2,S>) > failed: Cached message size smaller than expected (15886 < 16367, > box=INBOX.Debug, UID=1041) > Oct 18 14:41:39 rwvirtual10 dovecot: imap(john...@company.nl > <mailto:john...@company.nl>)<15868><qjTFpy6VPsMKAAok>: Panic: file istream.c: > line 315 (i_stream_read_memarea): assertion failed: (old_size <= _stream->pos > - _stream->skip)
The missing W shouldn't matter, but the S size is wrong. So the error is expected, but the panic isn't. I tried to reproduce this, but I couldn't get the panic to happen. Do you still have the file? Could you send it to me? You can also put it through https://dovecot.org/tools/maildir-obfuscate.pl which should remove all sensitive content but hopefully still contain enough to reproduce the bug.
