[Dovecot] assertion failed: (mailbox_list_is_valid_existing_name(_list, name))

[Adam McDougall]

Do you need a gdb backtrace for this one?  

I'm not sure why all of a sudden this started happening, its probably due to
me adding a folder somewhere?  not sure.  It happened when I went to open my
folder subscriptions in thunderbird.  It was taking longer than usual (call this
phase 1) and I noticed this in the logs:

(cant remember if this was phase 1 or 2 but the error is probably the same)
Nov 11 00:38:38 boomhauer dovecot: imap-login: Login: user=<mcdouga9>, method=PLAIN, 
rip=208.53.102.126, lip=35.9.37.190, TLS
Nov 11 00:38:39 boomhauer dovecot: IMAP(mcdouga9): 
fchown(/egr/mail/shared/decs/temp.boomhauer.3050.af3db3ac545170a7) failed: Operation not 
permitted
Nov 11 00:38:44 boomhauer dovecot: IMAP(mcdouga9): file mailbox-list-maildir.c: line 186 
(maildir_list_get_path): assertion failed: (mailbox_list_is_valid_existing_name(_list, 
name))
Nov 11 00:38:44 boomhauer dovecot: child 3050 (imap) killed with signal 6
Nov 11 00:38:45 boomhauer dovecot: imap-login: Login: user=<mcdouga9>, method=PLAIN, 
rip=208.53.102.126, lip=35.9.37.190, TLS
Nov 11 00:38:45 boomhauer dovecot: IMAP(mcdouga9): 
fchown(/egr/mail/shared/decs/temp.boomhauer.3052.5538be060c2f9c7d) failed: Operation not 
permitted
Nov 11 00:38:46 boomhauer dovecot: IMAP(mcdouga9): file mailbox-list-maildir.c: line 186 
(maildir_list_get_path): assertion failed: (mailbox_list_is_valid_existing_name(_list, 
name))
Nov 11 00:38:46 boomhauer dovecot: child 3052 (imap) killed with signal 6

When I cancelled the subscription window, "phase 2" is the same thing but happening
more rapidly.  I traced what tbird is doing and can reproduce it with:

? OK Logged in.
a list "" "#shared/decs/%/%"
Connection closed by foreign host.


Doing a list on #shared/decs/% works though.