Segfaults in indexer when after Maildir filename S value is updated

[Nerijus Baliunas]

Hello,

it is probably the same crash I reported 2 weeks ago -
http://article.gmane.org/gmane.mail.imap.dovecot/85223

Regards,
Nerijus

On Sun, 10 Apr 2016 10:43:25 +0200 Daniel Demus <daniel-dovecot at demus.dk> wrote:

> Every now and then the S value in the Maildir filname is wrong, and is 
> automaticcaly fixed by Dovecot while updating the index. It seems the 
> indexer retains a handle pointing to the old filename and crashes 
> immediately afterwards. The index is updated the next time the indexer 
> is run, is this is only an annoyance and somethign that fills up the 
> log.
> 
> dovecot: indexer-worker(demus): Error: Maildir filename has wrong S 
> value, renamed the file from 
> /home/demus/Maildir/.INBOX.NYTimes/cur/1100506665.M177356P6525V0000000000000302I010100CD_0.server.demus.dk,S=12206:2,S 
> to 
> /home/demus/Maildir/.INBOX.NYTimes/cur/1100506665.M177356P6525V0000000000000302I010100CD_0.server.demus.dk,S=12658:2,S: 
> 1 Time(s)
>      dovecot: indexer-worker(demus): Error: Raw backtrace: 
> /usr/lib/dovecot/libdovecot.so.0(+0x79988) [0xb6dc7988] -> 
> /usr/lib/dovecot/libdovecot.so.0(i_warning+0) [0xb6dc7aa8] -> 
> /usr/lib/dovecot/libdovecot.so.0(i_panic+0x64) [0xb6d6a948] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(+0x9d27c) [0xb6ed627c] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_init_stream+0x1c8) 
> [0xb6ed67c0] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x568a0) 
> [0xb6e8f8a0] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_get_stream+0x68) 
> [0xb6e5f3ac] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x56678) 
> [0xb6e8f678] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_get_virtual_size+0x48) 
> [0xb6e5efd4] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_precache+0x124) 
> [0xb6ed7ee8] -> /usr/lib/dovecot/lib20_fts_plugin.so(+0xd5d4) 
> [0xb6b6f5d4] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_precache+0x40) 
> [0xb6e5f804] -> dovecot/indexer-worker(+0x1ee8) [0x7f570ee8] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x68) [0xb6ddc5cc] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x120) 
> [0xb6dddd10] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x34) [0xb6ddc684] 
> -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x50) [0xb6ddc8b4] -> 
> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x14) [0xb6d70c84] 
> -> dovecot/indexer-worker(main+0xe8) [0x7f570880] -> 
> /lib/libc.so.6(__libc_start_main+0x114) [0xb6bd2b54]: 1 Time(s)
>      dovecot: indexer-worker(demus): Error: Raw backtrace: 
> /usr/lib/dovecot/libdovecot.so.0(+0x79988) [0xb6e43988] -> 
> /usr/lib/dovecot/libdovecot.so.0(i_warning+0) [0xb6e43aa8] -> 
> /usr/lib/dovecot/libdovecot.so.0(i_panic+0x64) [0xb6de6948] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(+0x9d27c) [0xb6f5227c] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_init_stream+0x1c8) 
> [0xb6f527c0] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x568a0) 
> [0xb6f0b8a0] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_get_stream+0x68) 
> [0xb6edb3ac] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0x56678) 
> [0xb6f0b678] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_get_virtual_size+0x48) 
> [0xb6edafd4] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(index_mail_precache+0x124) 
> [0xb6f53ee8] -> /usr/lib/dovecot/lib20_fts_plugin.so(+0xd5d4) 
> [0xb6beb5d4] -> 
> /usr/lib/dovecot/libdovecot-storage.so.0(mail_precache+0x40) 
> [0xb6edb804] -> dovecot/indexer-worker(+0x1ee8) [0x7f5eeee8] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x68) [0xb6e585cc] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x120) 
> [0xb6e59d10] -> 
> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x34) [0xb6e58684] 
> -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x50) [0xb6e588b4] -> 
> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x14) [0xb6decc84] 
> -> dovecot/indexer-worker(main+0xe8) [0x7f5ee880] -> 
> /lib/libc.so.6(__libc_start_main+0x114) [0xb6c4eb54]: 1 Time(s)
> 
> 
> Regards,
> Daniel Demus