ptrace, freebsd and vmware dont get along?
Darren Reed
darrenr at freebsd.org
Wed Jul 4 08:41:24 UTC 2007
using -current...
gdb does not seem to get along well under vmware...
doing "gdb a.out" with a "break main" followed by
"run" results in the behaviour seen here:
...
ptrace(0x21,0xebbe,0xbfbfdc90,0x0,0x28277130) = 0 (0x0)
ptrace(0x25,0xebbe,0xbfbfddd4,0x0,0x8) = 0 (0x0)
ptrace(0x7,0xebbe,0x1,0x14,0x10202) = 0 (0x0)
wait4(0xffffffff,0xbfbfdf08,0x0,0x0,0x28369569) = 60350 (0xebbe)
kill(60350,0) = 0 (0x0)
ptrace(0x21,0xebbe,0xbfbfdc90,0x0,0x28277130) = 0 (0x0)
ptrace(0x25,0xebbe,0xbfbfddd4,0x0,0x8) = 0 (0x0)
ptrace(0x7,0xebbe,0x1,0x14,0x10202) = 0 (0x0)
wait4(0xffffffff,0xbfbfdf08,0x0,0x0,0x28369569) = 60350 (0xebbe)
kill(60350,0) = 0 (0x0)
ptrace(0x21,0xebbe,0xbfbfdc90,0x0,0x28277130) = 0 (0x0)
ptrace(0x25,0xebbe,0xbfbfddd4,0x0,0x8) = 0 (0x0)
ptrace(0x7,0xebbe,0x1,0x14,0x10202) = 0 (0x0)
wait4(0xffffffff,0xbfbfdf08,0x0,0x0,0x28369569) = 60350 (0xebbe)
kill(60350,0) = 0 (0x0)
ptrace(0x21,0xebbe,0xbfbfdc90,0x0,0x28277130) = 0 (0x0)
ptrace(0x25,0xebbe,0xbfbfddd4,0x0,0x8) = 0 (0x0)
...
and gdb goes out to lunch without returning. And with a ^C,
I get it all nice and hung up:
60349 p0- TX 0:27.46 gdb a.out
60350 p0- TX 0:15.39 /bin/csh -c exec /usr/home/darrenr/a.out
60369 p4 I+ 0:00.20 truss -p 60349
It requires a "kill -9" on the truss to restore life.
Does anyone have any ideas about where to start trying
to resolve this problem?
Thanks,
Darren
More information about the freebsd-current
mailing list