segfaults with Dovecot 2.2.21

[Peer Heinlein]

We're running Dovecot 2.2.21 from Stephan Bosch's build service on
Dovecot 7.x. Everything's up2date.

# 2.2.devel (7ab22fc): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.11 (71e908a)
# OS: Linux 3.16.0-0.bpo.4-amd64 x86_64 Debian 7.9

root at mailimap01:/etc/dovecot/conf.d # apt-show-versions | grep dovecot
debian-dovecot-auto-keyring/oldstable-auto uptodate 2010.01.30
dovecot-core/oldstable-auto uptodate 2:2.2.21-1~auto+66
dovecot-imapd/oldstable-auto uptodate 2:2.2.21-1~auto+66
dovecot-lmtpd/oldstable-auto uptodate 2:2.2.21-1~auto+66
dovecot-managesieved/oldstable-auto uptodate 2:2.2.21-1~auto+66
dovecot-mysql/oldstable-auto uptodate 2:2.2.21-1~auto+66
dovecot-pop3d/oldstable-auto uptodate 2:2.2.21-1~auto+66
dovecot-sieve/oldstable-auto uptodate 2:2.2.21-1~auto+66


But we have sefaults in our logfile. How can we debug and solve that?

(Yes, I know Stephan Bosch's packages are autobuild at the edge, but we
need this versions since Dovecot 7.0 has only Dovecot 2.2.7 available.)

Peer



Jan 21 22:39:20 mailimap01 dovecot: imap(p24062p6): Error: Raw
backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x838cf) [0x7fbe4e92b8cf]
-> /usr/lib/dovecot/libdovecot.so.0(+0x8392e) [0x7fbe4e92b92e] ->
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fbe4e8d4aae] ->
dovecot/imap [p24062p6 87.140.193.6
NOOP](client_continue_pending_input+0x132) [0x7fbe4f1125e2] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x5b) [0x7fbe4e93eb0b]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xd7)
[0x7fbe4e93fee7] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25)
[0x7fbe4e93ebb5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38)
[0x7fbe4e93ed58] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7fbe4e8da4b3] -> dovecot/imap [p24062p6 87.140.193.6
NOOP](main+0x2d8) [0x7fbe4f105eb8] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fbe4e53bead]
-> dovecot/imap [p24062p6 87.140.193.6 NOOP](+0xf03d) [0x7fbe4f10603d]

Jan 21 22:46:41 mailimap01 dovecot: imap(p115951p1): Error: Raw
backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x838cf) [0x7fcd177d48cf]
-> /usr/lib/dovecot/libdovecot.so.0(+0x8392e) [0x7fcd177d492e] ->
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fcd1777daae] ->
dovecot/imap [p115951p1 93.204.210.91
FETCH](client_continue_pending_input+0x132) [0x7fcd17fbb5e2] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x5b) [0x7fcd177e7b0b]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xd7)
[0x7fcd177e8ee7] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25)
[0x7fcd177e7bb5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38)
[0x7fcd177e7d58] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7fcd177834b3] -> dovecot/imap [p115951p1 93.204.210.91
FETCH](main+0x2d8) [0x7fcd17faeeb8] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fcd173e4ead]
-> dovecot/imap [p115951p1 93.204.210.91 FETCH](+0xf03d) [0x7fcd17faf03d]

Jan 21 22:51:48 mailimap01 dovecot: imap(p54862p14): Error: Raw
backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x838cf) [0x7fd798e628cf]
-> /usr/lib/dovecot/libdovecot.so.0(+0x8392e) [0x7fd798e6292e] ->
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fd798e0baae] ->
dovecot/imap [p54862p14 217.92.255.97
NOOP](client_continue_pending_input+0x132) [0x7fd7996495e2] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x5b) [0x7fd798e75b0b]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xd7)
[0x7fd798e76ee7] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25)
[0x7fd798e75bb5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38)
[0x7fd798e75d58] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7fd798e114b3] -> dovecot/imap [p54862p14 217.92.255.97
NOOP](main+0x2d8) [0x7fd79963ceb8] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fd798a72ead]
-> dovecot/imap [p54862p14 217.92.255.97 NOOP](+0xf03d) [0x7fd79963d03d]

Jan 21 22:55:25 mailimap01 dovecot: imap(p142324p3): Error: Raw
backtrace: /usr/lib/dovecot/libdovecot.so.0(+0x838cf) [0x7fcbf559d8cf]
-> /usr/lib/dovecot/libdovecot.so.0(+0x8392e) [0x7fcbf559d92e] ->
/usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7fcbf5546aae] ->
dovecot/imap [p142324p3 80.153.228.104 NOOP
NOOP](client_continue_pending_input+0x132) [0x7fcbf5d845e2] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x5b) [0x7fcbf55b0b0b]
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xd7)
[0x7fcbf55b1ee7] ->
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x25)
[0x7fcbf55b0bb5] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38)
[0x7fcbf55b0d58] ->
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13)
[0x7fcbf554c4b3] -> dovecot/imap [p142324p3 80.153.228.104 NOOP
NOOP](main+0x2d8) [0x7fcbf5d77eb8] ->
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7fcbf51adead]
-> dovecot/imap [p142324p3 80.153.228.104 NOOP NOOP](+0xf03d)
[0x7fcbf5d7803d]




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