Panic: file istream-qp-decoder.c

[Urban Loesch]

Hi,

I'm running Dovecot EE Version with Debian Squeeze.

Version info:
ii  dovecot-ee-core                 1:2.2.13.31-1                secure mail server that supports mbox, maildir, dbox and mdbox mailboxes
ii  dovecot-ee-dbg                  1:2.2.13.31-1                debug symbols for Dovecot
ii  dovecot-ee-imapd                1:2.2.13.31-1                secure IMAP server that supports mbox, maildir, dbox and mdbox mailboxes
ii  dovecot-ee-lmtpd                1:2.2.13.31-1                secure LMTP server for Dovecot
ii  dovecot-ee-managesieved         0.4.3-7                      secure ManageSieve server for Dovecot
ii  dovecot-ee-mysql                1:2.2.13.31-1                MySQL support for Dovecot
ii  dovecot-ee-pop3d                1:2.2.13.31-1                secure POP3 server that supports mbox, maildir, dbox and mdbox mailboxes
ii  dovecot-ee-sieve                0.4.3-7                      sieve filters support for Dovecot


Yesterday I got the following errors in the error log:

Oct 28 18:29:05 mailstore dovecot: imap(user at domain.com pid:37052 session:<0K7g+34GIwDD/vzI>): Panic: file istream-qp-decoder.c: line 102
(i_stream_qp_decoder_read): assertion failed: (ret < 0)
Oct 28 18:29:05 mailstore dovecot: imap(user at domain.com pid:37052 session:<0K7g+34GIwDD/vzI>): Error: Raw backtrace:
/usr/lib/dovecot/libdovecot.so.0(+0x6d75a) [0x7f9bcee0275a] -> /usr/lib/dovecot/libdovecot.so.0(+0x6d7d6) [0x7f9bcee027d6] ->
/usr/lib/dovecot/libdovecot.so.0(i_error+0) [0x7f9bcedba5bf] -> /usr/lib/dovecot/libdovecot.so.0(+0x5a86c) [0x7f9bcedef86c] ->
/usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x63) [0x7f9bcee0b533] -> /usr/lib/dovecot/libdovecot.so.0(+0x7bc5c) [0x7f9bcee10c5c] ->
/usr/lib/dovecot/libdovecot.so.0(+0x7c0c8) [0x7f9bcee110c8] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x63) [0x7f9bcee0b533] ->
/usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x52) [0x7f9bcee0b8a2] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xa44ea) [0x7f9bcf10c4ea] ->
/usr/lib/dovecot/libdovecot-storage.so.0(index_mail_get_binary_stream+0x135) [0x7f9bcf10c9b5] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mail_get_binary_stream+0x61) [0x7f9bcf0e34f1] ->
/usr/lib/dovecot/libdovecot-storage.so.0(imap_msgpart_open+0xb0) [0x7f9bcf142f20] -> dovecot/imap() [0x41ba26] -> dovecot/imap() [0x419b4a] ->
dovecot/imap(imap_fetch_more+0x31) [0x419d81] -> dovecot/imap(cmd_fetch+0x49d) [0x40e88d] -> dovecot/imap(command_exec+0x3d) [0x41813d] ->
dovecot/imap() [0x417230] -> dovecot/imap() [0x41731d] -> dovecot/imap(client_handle_input+0x11d) [0x41759d] -> dovecot/imap(client_input+0x6f)
[0x41792f] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4e) [0x7f9bcee12f1e] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xaf) [0x7f9bcee1409f] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9)
[0x7f9bcee12fa9] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f9bcee13038] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7f9bcedbf3e3] -> dovecot/imap(main+0x2a7) [0x420e97]
Oct 28 18:29:05 mailstore dovecot: imap(user at domain.com pid:37052 session:<0K7g+34GIwDD/vzI>): Fatal: master: service(imap): child 37052 killed with
signal 6 (core dumps disabled)

Oct 28 18:29:58 mailstore dovecot: imap(user at domain.com pid:38868 session:<eAIJ/34GpADD/vzI>): Panic: file istream-qp-decoder.c: line 102
(i_stream_qp_decoder_read): assertion failed: (ret < 0)
Oct 28 18:29:58 mailstore dovecot: imap(user at domain.com pid:38868 session:<eAIJ/34GpADD/vzI>): Error: Raw backtrace:
/usr/lib/dovecot/libdovecot.so.0(+0x6d75a) [0x7f8f7cb9275a] -> /usr/lib/dovecot/libdovecot.so.0(+0x6d7d6) [0x7f8f7cb927d6] ->
/usr/lib/dovecot/libdovecot.so.0(i_error+0) [0x7f8f7cb4a5bf] -> /usr/lib/dovecot/libdovecot.so.0(+0x5a86c) [0x7f8f7cb7f86c] ->
/usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x63) [0x7f8f7cb9b533] -> /usr/lib/dovecot/libdovecot.so.0(+0x7bc5c) [0x7f8f7cba0c5c] ->
/usr/lib/dovecot/libdovecot.so.0(+0x7c0c8) [0x7f8f7cba10c8] -> /usr/lib/dovecot/libdovecot.so.0(i_stream_read+0x63) [0x7f8f7cb9b533] ->
/usr/lib/dovecot/libdovecot.so.0(i_stream_read_data+0x52) [0x7f8f7cb9b8a2] -> /usr/lib/dovecot/libdovecot-storage.so.0(+0xa44ea) [0x7f8f7ce9c4ea] ->
/usr/lib/dovecot/libdovecot-storage.so.0(index_mail_get_binary_stream+0x135) [0x7f8f7ce9c9b5] ->
/usr/lib/dovecot/libdovecot-storage.so.0(mail_get_binary_stream+0x61) [0x7f8f7ce734f1] ->
/usr/lib/dovecot/libdovecot-storage.so.0(imap_msgpart_open+0xb0) [0x7f8f7ced2f20] -> dovecot/imap() [0x41ba26] -> dovecot/imap() [0x419b4a] ->
dovecot/imap(imap_fetch_more+0x31) [0x419d81] -> dovecot/imap(cmd_fetch+0x49d) [0x40e88d] -> dovecot/imap(command_exec+0x3d) [0x41813d] ->
dovecot/imap() [0x417230] -> dovecot/imap() [0x41731d] -> dovecot/imap(client_handle_input+0x11d) [0x41759d] -> dovecot/imap(client_input+0x6f)
[0x41792f] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x4e) [0x7f8f7cba2f1e] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xaf) [0x7f8f7cba409f] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x9)
[0x7f8f7cba2fa9] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f8f7cba3038] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7f8f7cb4f3e3] -> dovecot/imap(main+0x2a7) [0x420e97]
Oct 28 18:29:58 mailstore dovecot: imap(user at domain.com pid:38868 session:<eAIJ/34GpADD/vzI>): Fatal: master: service(imap): child 38868 killed with
signal 6 (core dumps disabled)


The user uses Horde Webmail 5.2 to access his mailbox and there are about 1300 active session running curently on that server.

Many thanks
Urban Loesch