Panic with namespace

[Kostya Vasilyev]

Hi,
I was trying to configure a namespace like this:
10-mail.conf
namespace inbox {
prefix = "iNBox."
inbox = yes
}

And when a client connected, I got the panic below. Dovecot version is 2.3.4.1
(f79e8e7e4) on Debian 10.

Aug 25 16:18:27 kman dovecot: imap(kman at ...)<20082><XOXiibOtpq2y2nhZ>: Panic:
file mailbox-list-maildir-iter.c: line 511 (maildir_list_iter_next
): assertion failed: ((ctx->info.flags & MAILBOX_NOCHILDREN) != 0)
Aug 25 16:18:27 kman dovecot: imap(kman at ...)<20082><XOXiibOtpq2y2nhZ>: Error: Raw
backtrace: /usr/lib/dovecot/libdovecot.so.0(+0xdb62b) [0x7f659
9d9962b] -> /usr/lib/dovecot/libdovecot.so.0(+0xdb6c1) [0x7f6599d996c1] ->
/usr/lib/dovecot/libdovecot.so.0(+0x4a149) [0x7f6599d08149] -> /usr/lib/dov
ecot/libdovecot-storage.so.0(+0x45b6e) [0x7f6599e92b6e] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_list_index_sync+0x1dc)
[0x7f6599f08c6c] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_list_index_refresh_force+0xfb)
[0x7f6599f0ac3b] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xb9274
) [0x7f6599f06274] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xb9467)
[0x7f6599f06467] -> /usr/lib/dovecot/libdovecot-storage.so.0(mailbox_exists+0
x68) [0x7f6599ea70e8] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mailbox_list_mailbox+0x1f6)
[0x7f6599eb6126] -> /usr/lib/dovecot/libdovecot-storage.
so.0(mailbox_list_iter_init_namespaces+0x208) [0x7f6599f0be08] ->
dovecot/imap(cmd_list_full+0x60e) [0x5654c07d02de] ->
dovecot/imap(command_exec+0x70
) [0x5654c07d9d80] -> dovecot/imap(+0x1e3f2) [0x5654c07d83f2] ->
dovecot/imap(+0x1e494) [0x5654c07d8494] ->
dovecot/imap(client_handle_input+0x1b5) [0
x5654c07d8845] -> dovecot/imap(client_input+0x7e) [0x5654c07d8d6e] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x6f) [0x7f6599dafadf] -> /usr/
lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x136) [0x7f6599db10d6]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x4c) [0x7f65
99dafb7c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) [0x7f6599dafce0]
-> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f659
9d300d3] -> dovecot/imap(main+0x325) [0x5654c07cabf5] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) [0x7f6599b1b09b] ->
dovecot/imap(_sta
rt+0x2a) [0x5654c07cad8a]

-- K
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