problem exiting with iftop
Russell Senior
seniorr at aracnet.com
Thu Apr 7 19:43:32 UTC 2011
I am using iftop on a mipsel device (Netgear WGT634U, though I've seen
it on an mips Accton MR3201A as well) with openwrt, which uses uClibc
0.9.32-rc2-git 9112a2398ec58b32cd1a1c6feae195bd8f9a46a2 plus some
patches (https://dev.openwrt.org/browser/trunk/toolchain/uClibc). The
iftop program uses the pthread library and ncurses. The outward
symptoms are that when I try to quit, either by typing 'q' or ctrl-C,
iftop tends to abort instead of exit normally, leaving the terminal
session frozen.
I have an strace of this:
http://personaltelco.net/~russell/strace-iftop.log
I've tried a newer checkout of uClibc (post rc3) and I'm still seeing
this. Sometimes it exits normally once (i've seen it happen twice)
after a reboot, but subsequent exits Abort pretty reliably.
I have consulted nbd about it, but he's not sure. I've tried running
it in a remote-gdb without any substantial insight (wrapped in
gdbserver, the terminal session recovers), though I never seem to hit
the signal handler for SIGRT_0. Any suggestions?
Thanks!
--
Russell Senior ``I have nine fingers; you have ten.''
seniorr at aracnet.com
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