Package: netcat-traditional
Version: 1.10-40
Severity: normal
compare the following responses to a system error:
0 dkg@alice:~$ nc.openbsd 'no-such-host' 22 >/dev/null
nc.openbsd: getaddrinfo: System error
1 dkg@alice:~$
0 dkg@alice:~$ nc.traditional 'no-such-host' 22 >/dev/null
no-such-host: forward host lookup failed: fØI : Connection timed out
^[[?1;2c1 dkg@alice:~$ 1;2c
note the weird characters and the garbage on the terminal at the
subsequent shell prompt.
using strace, i can see that netcat-traditional is doing something
deeply weird and confused:
strace -o tmp/nc.traditional.strace -f -s 200 nc.traditional 'no-such-host'
22 >/dev/null 2>/dev/null
produces the following sequence of writes to stderr:
18362 write(2, "no-such-host: forward host lookup failed: ", 42) = 42
18362 write(2, "f\203\5\330I ", 6) = 6
18362 write(2, " : Connection timed out\n", 24) = 24
18362 close(4294967295) = -1 EBADF (Bad file descriptor)
18362 exit_group(1) = ?
and why is it trying to close FD 0xffffffff ?
sorry i haven't had a chance to debug this further, but i thought it
worth reporting even if i didn't have the answer.
--dkg
-- System Information:
Debian Release: jessie/sid
APT prefers testing
APT policy: (500, 'testing'), (200, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 3.8-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages netcat-traditional depends on:
ii libc6 2.17-3
netcat-traditional recommends no packages.
netcat-traditional suggests no packages.
-- debconf-show failed
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