[Expired for QEMU because there has been no activity for 60 days.] ** Changed in: qemu Status: Incomplete => Expired
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1061778 Title: signal mask not reset on exec Status in QEMU: Expired Bug description: Seen in qemu-1.0 under 12.04, but AFAICT from current git it hasn't changed. ./main-loop.c:qemu_signal_init blocks SIGALRM so it can be handled via signalfd. ./net/tap.c:launch_script does not reset the signal mask before the execv() call, and signal masks are inherited. So the script is run with SIGALRM blocked (as can be seen in /proc/$$/status, "SigBlk: 0000000000002000"). One reasonable example of where this bites is an interface up script that calls ping with a timeout to give things a chance to settle down before continuing, but abort if this doesn't happen within a reasonable time). Since ping uses SIGALRM for the timeout, this now never terminates. qemu-0.14 didn't block SIGALRM, so such scripts worked fine there. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1061778/+subscriptions