[Dovecot] Fatal crash during a user search

[Rick Romero]

Well, it looks like it occurred during the search to me...

  Jan 10 17:05:37 sysvolone dovecot: [ID 583609 mail.crit]
imap(user at host.com): Panic: file istream-header-filter.c: line 520
(i_stream_create_header_filter): assertion failed: (ret < 0)
  Jan 10 17:05:37 sysvolone dovecot: [ID 583609 mail.error]
imap(user at host.com): Error: Raw backtrace:
/usr/local/lib/dovecot/libdovecot.so.0.0.0'default_fatal_finish+0x3c
[0xfee7b050] ->
/usr/local/lib/dovecot/libdovecot.so.0.0.0'i_internal_fatal_handler+0x2b
[0xfee7bbe7] -> /usr/local/lib/dovecot/libdovecot.so.0.0.0'0x3b239
[0xfee7b239] ->
/usr/local/lib/dovecot/libdovecot.so.0.0.0'i_stream_create_header_filter+0x12f
[0xfee6598b] ->
/usr/local/lib/dovecot/libdovecot-storage.so.0.0.0'index_mail_get_header_stream+0x17c
[0xfef050cc] ->
/usr/local/lib/dovecot/libdovecot-storage.so.0.0.0'mail_get_header_stream+0x13
[0xfeee8b8b] ->
/usr/local/lib/dovecot/libdovecot-storage.so.0.0.0'index_storage_search_next_nonblock+0x5bf
[0xfef07807] ->
/usr/local/lib/dovecot/libdovecot-storage.so.0.0.0'mailbox_search_next_nonblock+0x2a
[0xfeeef4c6] -> /usr/local/libexec/dovecot/imap'cmd_search_more+0x78
[0x806516c] -> /usr/local/libexec/dovecot/imap'imap_search_start+0x18e
[0x8065612] -> /usr/local/libexec/dovecot/imap'c
  Jan 10 17:05:37 sysvolone dovecot: [ID 583609 mail.error] master: Error:
service(imap): child 7746 killed with signal 6 (core not dumped - set
service imap { drop_priv_before_exec=yes })

  I'm not sure if that gives you what you need - it looks like the entire
dump didn't get saved.

  This is on OpenSolaris 5.11 snv_134

  Rick