Date: Thu, 13 May 2004 15:57:35 +1200 From: Joerg Micheel <joerg@nlanr.net> To: freebsd-amd64@freebsd.org Subject: ftpd in debug mode crashes in vsyslog Message-ID: <20040513155735.A68241@nlanr.net>
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This might be a variation on the va_list_q problem discussed earlier,
but I am not sure.
I am runnning a dual Opteron 244 on Tyan 2882 with 4GB PC3200.
ftpd is started as ./ftpd -d -ll -S -A -D, or ./ftpd -d -ll -S -A
from inetd.conf.
If you connect from a client, you get the welcome prompt, as soon
as you provide your user name, the server dies. gdb log on ftpd.core
as below:
(gdb) where
#0 0x0000000000410f16 in __vfprintf (fp=0x200e94ea0, fmt0=0x4130d9 "%s FTP server (%s) ready.", ap=0x7fffffffe080)
at /usr/src/lib/libc/stdio/vfprintf.c:1044
#1 0x000000000040fb7e in vfprintf (fp=0x200e94ea0, fmt0=0x4130d9 "%s FTP server (%s) ready.", ap=0x7fffffffe080)
at /usr/src/lib/libc/stdio/vfprintf.c:403
#2 0x000000000040f494 in vsyslog (pri=95, fmt=0x4130d9 "%s FTP server (%s) ready.", ap=0x7fffffffe080)
at /usr/src/lib/libc/gen/syslog.c:220
#3 0x00000000004085a2 in reply (n=220, fmt=0x4130d9 "%s FTP server (%s) ready.") at ftpd.c:2382
#4 0x00000000004054fe in main (argc=0, argv=0x7fffffffeb28, envp=0x7fffffffe0c0) at ftpd.c:626
If you leave out -d from the ftpd command line, reply() won't call
vsyslog, and subsequently the server runs stable. I have spent some
time looking into the problem and studying the code, but I can't find
anything obviously wrong.
Please Cc joerg@nlanr.net on reply, as I am not presently subscribed to
freebsd-amd64.
Thank you.
Joerg
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