#54 mbsync segfaults when syncing multiple Stores which use the same IMAPAccount (?)

[Olivier Huber]

I have a IMAP account where I have what I believe to be "shared namespace", see https://www.cyrusimap.org/imap/concepts/features/namespaces.html

Hence, there are 2 namespace of interest: INBOX and user
By default, selects INBOX, which contains my personal mail.
To get the user namespace synced, I created another Channel/MaildirStore/IMAPStore for the same account, where I specify the Path "user" in the IMAPStore.

If I try to call mbsync -a, I get a segfault. I attached a trace to mbsync -a -l -D.

[Olivier Huber]

Config file

[Olivier Huber]

gdb backtrace + some commands. Debugging it a little, it seems tht the ctx->boxes contains "trr154/team5" and "!", the former being the last box for the INBOX namespace. The segfault happens because the next element of the "!" box points to an invalid address (0x100000001).

[Olivier Huber]

Note that I can everything working by invoking mbsync wias && mbsync wias-shared

[Oswald Buddenhagen]

clearly, there is something very wrong with store recycling.

btw, that shared Store's Path should be "user." - otherwise all your local folders should be prefixed with a dot.

[Olivier Huber]

Sorry for the messy title, I clicked too soon and sourceforge doesn't let me edit it.

Thanks for your suggestion, there is indeed a dot. However, if I use your suggestion in the IMAPStore IMAPStore, I get the following error (for each mailbox)

Error: channel wias-shared: master /fbp2020reg cannot be opened.

It somehow still synchronizes. Am I missing something?

[Oswald Buddenhagen]

i wouldn't know right away.
if this happens when syncing just that channel (i.e., it's independent of the bug here), then i suggest you make another bug report.

[Olivier Huber]

I couldn't reproduce the error with "user." today. Sorry for the noise