strace hard lock

Ender
Sun, 07 Mar 2004 01:36:33 -0000

Topic:          strace casues hardlock. no kernel panic.  userland tool

Category:       kernel
Program:        strace
Affects:        FreeBSD releases 5.x and later.

problem:  When a normal user (or root user) users strace on certain
binarys, the system will hardlock up, with no kernel panic. (numlock
doesnt turn on and off, no ssh or console access). Im using strace from
the ports collection. The crash seemed to occure when exiting strace
from a running program, Also the crash would not happen 100% of the time
leaving a program, but it never took more than 3 times to casue the crash.

Repeatable: i repeated this bug on 2 different systems both were SMP. 2
procs. I have not been able to test on a UP system yet.

The main program i am running, also the easyest to casue the crash can
be found at the following links: