Bug 33833 – wget 1.9.x core dumps when used with proxy

• Product: Gentoo Linux
• Status: RESOLVED DUPLICATE

[Description Jeld The Dark Elf 2003-11-19 08:04:19 UTC]

When using wget 1.9x with *_proxy environment variables set, wget coredumps.
If I get some spare time I will try to debug.

Reproducible: Always
Steps to Reproduce:
1. emerge wget
2. export http_proxy="ftp://myproxy:21/"
3. wget ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.0-test9.tar.bz2

Actual Results:  
wget dumps core on a segfault

Expected Results:  
obviously it is supposed to download the file

I am marking this critical, since wget is used by portage (by default) to
retrieve source archives. If version 1.9 gets onto the CD, this is going to be a
pain for a lot of people.

[Comment 1 Martin Holzer (RETIRED) 2003-11-19 11:14:38 UTC]

i don't have any problems with latest squid proxy

[Comment 2 Jeld The Dark Elf 2003-11-19 12:08:57 UTC]

I get coredumps on both http: and ftp: URLs 
with version 1.9.1-r1 compiled with nls and ssl.
Here is a sample output:
wget ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.0-test9.tar.bz2
--15:06:52--  ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.0-test9.tar.bz2
           => `linux-2.6.0-test9.tar.bz2'
Aborted (core dumped)

[Comment 3 Jeld The Dark Elf 2003-11-19 12:10:43 UTC]

Here is strace output:
execve("/usr/bin/wget", ["wget", "ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.0-test9.tar.bz2"], [/* 47 vars */]) = 0
uname({sys="Linux", node="raistlin", ...}) = 0
brk(0)                                  = 0x807c000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40015000
open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=96159, ...}) = 0
mmap2(NULL, 96159, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40016000
close(3)                                = 0
open("/usr/lib/libssl.so.0.9.7", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 \205\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0555, st_size=216792, ...}) = 0
mmap2(NULL, 187152, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4002e000
mmap2(0x40059000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x2b) = 0x40059000
close(3)                                = 0
open("/usr/lib/libcrypto.so.0.9.7", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\0\277\2"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0555, st_size=1198133, ...}) = 0
mmap2(NULL, 1035096, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4005c000
mmap2(0x40144000, 73728, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0xe7) = 0x40144000
mmap2(0x40156000, 11096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40156000
close(3)                                = 0
mprotect(0xbffff000, 4096, PROT_READ|PROT_WRITE|PROT_EXEC|0x1000000) = 0
open("/lib/libdl.so.2", O_RDONLY)       = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0f\33\0\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=13415, ...}) = 0
mmap2(NULL, 12088, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x40159000
mmap2(0x4015b000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x1) = 0x4015b000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0Q[\1\000"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1483713, ...}) = 0
mmap2(NULL, 1249028, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) = 0x4015c000
mmap2(0x40287000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x12a) = 0x40287000
mmap2(0x4028b000, 7940, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x4028b000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4028d000
munmap(0x40016000, 96159)               = 0
brk(0)                                  = 0x807c000
brk(0x809d000)                          = 0x809d000
brk(0)                                  = 0x809d000
access("/etc/wget/wgetrc", F_OK)        = 0
open("/etc/wget/wgetrc", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=4021, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40016000
read(3, "###\n### Sample Wget initializati"..., 4096) = 4021
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x40016000, 4096)                = 0
access("/root/.wgetrc", F_OK)           = -1 ENOENT (No such file or directory)
ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(2, TIOCGWINSZ, {ws_row=42, ws_col=120, ws_xpixel=0, ws_ypixel=0}) = 0
ioctl(2, TCGETS, {B38400 opost isig icanon echo ...}) = 0
rt_sigaction(SIGHUP, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGHUP, {0x8060c8a, [HUP], SA_RESTORER|SA_RESTART, 0x40185928}, {SIG_IGN}, 8) = 0
rt_sigaction(SIGUSR1, {0x8060c8a, [USR1], SA_RESTORER|SA_RESTART, 0x40185928}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGPIPE, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGWINCH, {0x806279d, [WINCH], SA_RESTORER|SA_RESTART, 0x40185928}, {SIG_DFL}, 8) = 0
getuid32()                              = 0
geteuid32()                             = 0
getgid32()                              = 0
getegid32()                             = 0
getuid32()                              = 0
geteuid32()                             = 0
getgid32()                              = 0
getegid32()                             = 0
stat64("/root/.rnd", {st_mode=S_IFREG|0600, st_size=1024, ...}) = 0
open("/root/.rnd", O_RDONLY)            = 3
fstat64(3, {st_mode=S_IFREG|0600, st_size=1024, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40016000
read(3, "gkj?\207A\370\r\360R\3574\314\3\372\360N\215\261\303\357"..., 4096) = 1024
read(3, "", 4096)                       = 0
close(3)                                = 0
munmap(0x40016000, 4096)                = 0
getpid()                                = 22481
getpid()                                = 22481
open("/dev/urandom", O_RDONLY|O_NONBLOCK|O_NOCTTY) = 3
select(4, [3], NULL, NULL, {0, 10000})  = 1 (in [3], left {0, 10000})
read(3, "0\340\350\322\323\303!\30|\257e\373\212B\224xUL\22\177"..., 32) = 32
close(3)                                = 0
getpid()                                = 22481
getpid()                                = 22481
getuid32()                              = 0
getpid()                                = 22481
time(NULL)                              = 1069272581
getpid()                                = 22481
access("linux-2.6.0-test9.tar.bz2", F_OK) = -1 ENOENT (No such file or directory)
time(NULL)                              = 1069272581
open("/etc/localtime", O_RDONLY)        = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1267, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40016000
read(3, "TZif\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\4\0"..., 4096) = 1267
close(3)                                = 0
munmap(0x40016000, 4096)                = 0
write(2, "--15:09:41--  ftp://ftp.kernel.o"..., 125--15:09:41--  ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.0-test9.tar.bz2
           => `linux-2.6.0-test9.tar.bz2'
) = 125
rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0
getpid()                                = 22481
kill(22481, SIGABRT)                    = 0
--- SIGABRT (Aborted) @ 0 (0) ---
+++ killed by SIGABRT +++

[Comment 4 Seemant Kulleen (RETIRED) 2003-11-19 12:13:33 UTC]

trinity sephora $ export http_proxy="localhost:3128"                          ~
trinity sephora $ wget ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.0-test9.tar.bz2
--12:13:16--  ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.0-test9.tar.bz2
           => `linux-2.6.0-test9.tar.bz2'
Resolving ftp.kernel.org... 204.152.189.116
Connecting to ftp.kernel.org[204.152.189.116]:21... connected.
Logging in as anonymous ... Logged in!
==> SYST ... done.    ==> PWD ... done.
==> TYPE I ... done.  ==> CWD /pub/linux/kernel/v2.6 ... done.
==> PORT ... done.    ==> RETR linux-2.6.0-test9.tar.bz2 ... done.
Length: 33,226,512 (unauthoritative)

 1% [                                     ] 561,992      389.77K/s             

[Comment 5 Seemant Kulleen (RETIRED) 2003-11-19 12:14:09 UTC]

worked for me there with wget-1.9.1-r1 and the latest squid.  Not sure why you have your issue.

[Comment 6 Jeld The Dark Elf 2003-11-19 12:19:31 UTC]

Here I have squid 2.5 stable 3 and a separate FTP proxy ( not sure which one )

[Comment 7 Jeld The Dark Elf 2003-11-19 12:21:59 UTC]

Now, do not be silly, you define an http proxy and do an ftp download, of course it is going to work since it will not use the proxy. Also, I have an actual remote system running the proxy, not localhost.

[Comment 8 Brandon Hale (RETIRED) 2003-11-19 12:25:12 UTC]

same here, working w/ squid. maybe your proxy server is doing something nasty

[Comment 9 Brandon Hale (RETIRED) 2003-11-19 12:32:24 UTC]

btw, squid works fine as an ftp proxy as well, so set http_proxy="ftp://myproxy:3128/" and you're off

[Comment 10 Jeld The Dark Elf 2003-11-19 12:34:43 UTC]

Every other program seems to work. I just made an experiment, and replaced proxy IP address with the DNS name. It works with the name, but coredumps with an IP.
Wierd!

[Comment 11 Greg Fitzgerald (RETIRED) 2003-11-19 15:00:12 UTC]

Since this dies only when using an IP address its a duplicate of bug #33827

*** This bug has been marked as a duplicate of 33827 ***

[Comment 12 Martin Holzer (RETIRED) 2003-11-20 10:26:31 UTC]

this is very unusual http_proxy="ftp://myproxy:3128/

i used
http_proxy="http://myproxy:3128/