Hello,
First time poster here - if this is not the right forum please accept my apology and point me in the right direction.
My research group has a server running 7.2-PRERELEASE and an odd problem has cropped up: signals are not being delivered to processes at all. For example, if I run 'sleep 10' from the shell, ctrl-c won't interrupt it. kill -KILL <pid> still works, but this sort of makes sense since it involves only the OS and doesn't require delivery to the process itself. I've also written my own trivial C and python programs that trap various signals and print to stdout when these signals are received, and I am unable to get either program to receive any signals. Similarly I am unable to minimize (ctrl-z, a la SIGSTOP) any running processes.
As to why this has appeared all of a sudden, I don't have any bright ideas. Unfortunately I am not the only one with superuser access on this machine, but nobody else in the group has any idea of what they could have done to mess things up.
Any hints or ideas? I have tried googling and searching the FreeBSD mailing lists, but have come up empty so far.
thanks very much,
Ian
First time poster here - if this is not the right forum please accept my apology and point me in the right direction.
My research group has a server running 7.2-PRERELEASE and an odd problem has cropped up: signals are not being delivered to processes at all. For example, if I run 'sleep 10' from the shell, ctrl-c won't interrupt it. kill -KILL <pid> still works, but this sort of makes sense since it involves only the OS and doesn't require delivery to the process itself. I've also written my own trivial C and python programs that trap various signals and print to stdout when these signals are received, and I am unable to get either program to receive any signals. Similarly I am unable to minimize (ctrl-z, a la SIGSTOP) any running processes.
As to why this has appeared all of a sudden, I don't have any bright ideas. Unfortunately I am not the only one with superuser access on this machine, but nobody else in the group has any idea of what they could have done to mess things up.
Any hints or ideas? I have tried googling and searching the FreeBSD mailing lists, but have come up empty so far.
thanks very much,
Ian