Bugs item #1192828, was opened at 2005-04-30 04:13
Message generated for change (Settings changed) made by bagder
You can respond by visiting:
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Category: ftp
Group: crash
Status: Open
Resolution: None
>Priority: 8
Submitted By: zhuravlev alexander (zaa)
Assigned to: Daniel Stenberg (bagder)
Summary: SIGSEGV during binding to invalid IP while connecting to FTP

Initial Comment:
[kernel:...curl-7.13.2/src]>uname -mrs
FreeBSD 5.4-STABLE i386
[kernel:...curl-7.13.2/src]>env -i ./curl -V
curl 7.13.2 (i386-unknown-freebsd5.4) libcurl/7.13.2
OpenSSL/0.9.7e zlib/1.2.1
Protocols: ftp gopher telnet dict ldap http file https ftps
Features: Debug Largefile NTLM SSL libz
[kernel:...curl-7.13.2/src]>env -i ./curl -v -iIL
--interface 62.76.34.99
ftp://ftp.dti.ad.jp/pub/lang/gcc/releases/gcc-4.0.0/gcc-4.0.0.tar.bz2
* About to connect() to ftp.dti.ad.jp port 21
* Trying 202.216.228.228... * We bind local end to
62.76.34.99
* Can't assign requested address
Segmentation fault (core dumped)

[kernel:...curl-7.13.2/src]>gdb ./curl ./curl.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public
License, and you are
welcome to change it and/or distribute copies of it
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Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show
warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
Core was generated by `curl'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libssl.so.3...done.
Loaded symbols for /usr/lib/libssl.so.3
Reading symbols from /lib/libcrypto.so.3...done.
Loaded symbols for /lib/libcrypto.so.3
Reading symbols from /lib/libz.so.2...done.
Loaded symbols for /lib/libz.so.2
Reading symbols from /lib/libc.so.5...done.
Loaded symbols for /lib/libc.so.5
Reading symbols from /libexec/ld-elf.so.1...done.
Loaded symbols for /libexec/ld-elf.so.1
#0 0x0807b4f2 in ftp_parse_url_path (conn=0x809d804)
at ftp.c:3652
3652 ftp->ctl_valid = FALSE;
(gdb) list
3647 char *cur_pos = conn->path; /* current
position in path. point at the begin
3648 of next path
component */
3649
3650 /* the ftp struct is already inited in
ftp_connect() */
3651 ftp = conn->proto.ftp;
3652 ftp->ctl_valid = FALSE;
3653
3654 ftp->dirdepth = 0;
3655 ftp->diralloc = 5; /* default dir depth to
allocate */
3656 ftp->dirs = (char **)calloc(ftp->diralloc,
sizeof(ftp->dirs[0]));
(gdb) bt
#0 0x0807b4f2 in ftp_parse_url_path (conn=0x809d804)
at ftp.c:3652
#1 0x0807a8c6 in Curl_ftp (conn=0x809d804,
done=0xbfbfe856 "") at ftp.c:3184
#2 0x08063203 in Curl_do (connp=0xbfbfe85c,
done=0xbfbfe856 "") at url.c:3682
#3 0x0806c048 in Curl_perform (data=0x80a8004) at
transfer.c:2153
#4 0x08058be8 in curl_easy_perform (curl=0x80a8004) at
easy.c:474
#5 0x080518ae in operate (config=0xbfbfeca8, argc=6,
argv=0xbfbfee88) at main.c:3703
#6 0x080520a6 in main (argc=6, argv=0xbfbfee88) at
main.c:3992

Thank you.

----------------------------------------------------------------------

Comment By: Daniel Stenberg (bagder)
Date: 2005-04-30 14:25

Message:
Logged In: YES
user_id=1110

so the 'ftp' pointer is bad when this happens?

----------------------------------------------------------------------

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Received on 2005-04-30