ports/97305: kio_pop3 wedges during POP from remote VPN'd site
Mike Durian
durian at shadetreesoftware.com
Mon May 15 15:20:21 UTC 2006
>Number: 97305
>Category: ports
>Synopsis: kio_pop3 wedges during POP from remote VPN'd site
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-ports-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon May 15 15:20:18 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator: Mike Durian
>Release: FreeBSD 6.1-RC i386
>Organization:
>Environment:
System: FreeBSD man.boogie.com 6.1-RC FreeBSD 6.1-RC #5: Sat Apr 15 10:43:56 MDT 2006 root at man.boogie.com:/disk2/obj/disk2/src/sys/BOOGIE i386
>Description:
Once or twice a day, a kio_pop3 process (from KDE kmail) will
wedge trying to POP mail from a remote host that is accessable
over a VPN (IPSEC). I do not know if this is a FreeBSD issue
or a KDE issue. The problem occurred after I updated KDE,
but I had also updated FreeBSD at about the same time.
I have filed a KDE bug too: http://bugs.kde.org/show_bug.cgi?id=122457
Here is a gdb backtrace from the wedged process:
(gdb) info thread
* 3 LWP 100142 0x294417dd in read () from /lib/libc.so.6
2 Thread 0x805d000 (runnable) 0x294417df in read () from /lib/libc.so.6
1 Thread 0x833fa00 (LWP 100139) 0x2938446b in pthread_testcancel ()
from /usr/lib/libpthread.so.2
(gdb) thread 2
[Switching to thread 2 (Thread 0x805d000 (runnable))]#0 0x294417df in read ()
from /lib/libc.so.6
(gdb) bt
#0 0x294417df in read () from /lib/libc.so.6
#1 0x2936d19a in read () from /usr/lib/libpthread.so.2
#2 0x297409d1 in BIO_sock_should_retry () from /lib/libcrypto.so.4
#3 0x297a93c3 in BIO_read () from /lib/libcrypto.so.4
#4 0x298c8cf9 in SSL_set_msg_callback () from /usr/lib/libssl.so
#5 0x298c9922 in ssl3_read_bytes () from /usr/lib/libssl.so
#6 0x298cb035 in ssl3_renegotiate_check () from /usr/lib/libssl.so
#7 0x298c652e in SSL_read () from /usr/lib/libssl.so
#8 0x2821310c in KOpenSSLProxy::SSL_read (this=0x8363160, ssl=0x83b4400,
buf=0xbfbfd1b0, num=4095) at kopenssl.cc:661
#9 0x28203317 in KSSL::read (this=0x8347a40, buf=0xbfbfd1b0, len=4095)
at kssl.cc:485
#10 0x282677bb in KIO::TCPSlaveBase::read (this=0x8349000, data=0xbfbfd1b0,
len=4095) at tcpslavebase.cpp:174
#11 0x296bd321 in POP3Protocol::myRead () from /usr/local/lib/kde3/kio_pop3.so
#12 0x296c2727 in POP3Protocol::get () from /usr/local/lib/kde3/kio_pop3.so
#13 0x2826b1a1 in KIO::SlaveBase::dispatch (this=0x8349000, command=67,
data=@0xbfbfe320) at slavebase.cpp:1020
#14 0x28269d05 in KIO::SlaveBase::dispatchLoop (this=0x8349000)
at slavebase.cpp:290
#15 0x296bcfe0 in kdemain () from /usr/local/lib/kde3/kio_pop3.so
#16 0x0804f21d in launch (argc=4, _name=0x8345404 "kio_pop3",
args=0x8345486 "", cwd=0x0, envc=0, envs=0x834548a "", reset_env=false,
tty=0x0, avoid_loops=96, startup_id_str=0x805189c "0") at kinit.cpp:639
#17 0x0804f8ca in handle_launcher_request (sock=8) at kinit.cpp:1203
#18 0x0804fe6c in handle_requests (waitForPid=0) at kinit.cpp:1406
#19 0x08050465 in main (argc=2, argv=0xbfbfe980, envp=0xbfbfe98c)
at kinit.cpp:1850
>How-To-Repeat:
I cannot get the problem to occur on command. It does happen once
or twice a day though. I've got kmail configured to POP via TLS
once a minute.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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