I can make xterm segfault reproducibly
on Debian GNU/Linux woody (unstable).
[tv@hq ~/tmp/x]$ ./xterm -version
XFree86 4.0.1b(144)
If I start an xterm, ssh -v remotehost,
and run sudo there, so that sudo prompts
for a password, the local xterm segfaults.
This only happens with ssh -v, which is
weird, and needs a specific version of
_something_ in the remote end -- a bit
under-updated Debian 2.2 (potato) seems
to cause it, the newer unstable woody
doesn't.
crashes:
sudo 1.6.2p2
OpenSSH 1.2.3
doesn't crash:
sudo 1.6.3p5
OpenSSH 2.1.1p4
Here's the end of strace
select(4, [3], [], [], {0, 0}) = 0 (Timeout)
read(4, "Password:\0", 4096) = 10
--- SIGSEGV (Segmentation fault) ---
And ltrace:
memcpy(0x40302548, "Password:", 9) = 0x40302548
memset(0x40302598, '\200', 9) = 0x40302598
memset(0x403025e8, '\000', 9) = 0x403025e8
memset(0x40302638, '\000', 9) = 0x40302638
--- SIGSEGV (Segmentation fault) ---
Here's a backtrace:
Program received signal SIGSEGV, Segmentation fault.
0x8066076 in addXtermCombining ()
(gdb) bt
#0 0x8066076 in addXtermCombining ()
#1 0x804fa3d in VTparse ()
#2 0x8053b5e in VTRun ()
#3 0x80697d8 in main ()
#4 0x40225a52 in __libc_start_main () from /lib/libc.so.6
(gdb)
Do tell if I can help you any more. I speak
C well enough and can manage my way with the
debugger.
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