[Dovecot] Dovecot Erros in Logs

[David Cunningham]

Different Error today:

Aug 31 08:01:05 IMAP(user-folder): Panic: pool_data_stack_realloc():  
stack frame changed

Aug 31 08:01:05 IMAP(user-folder): Error: Raw backtrace: imap  
[0x49d0c8] -> imap [0x49db63] -> imap [0x49d386] -> imap [0x4a79bb] ->  
imap [0x49b3f5] -> imap(buffer_write+0x72) [0x49b732] ->  
imap(buffer_append_c+0x18) [0x49b848] ->  
imap(mail_namespace_get_vname+0x4b) [0x46374b] ->  
imap(mailbox_list_subscriptions_fill+0xf9) [0x42d559] ->  
imap(maildir_list_iter_init+0x592) [0x42d202] -> imap [0x41c953] ->  
imap(cmd_list_full+0x261) [0x41cd01] -> imap(cmd_lsub+0xe) [0x41d27e]  
-> imap [0x4203f3] -> imap [0x4203b8] ->  
imap(client_handle_input+0x161) [0x420681] -> imap(client_input+0x5f)  
[0x420f2f] -> imap(io_loop_handler_run+0x109) [0x4a5949] ->  
imap(io_loop_run+0x28) [0x4a4c98] -> imap(main+0x712) [0x428b32] ->  
/lib64/tls/libc.so.6(__libc_start_main+0xdb) [0x3170c1c40b] -> imap  
[0x41940a]

It seems to only happen to this one user.

I cannot see anything odd about this user's folder.

Dave