On Sun, Aug 18, 2013 at 01:30:08PM +0200, Richard Weinberger wrote: > Richard reported that some UML processes survive if the UML > main process receives a SIGTERM. > This issue was caused by a wrongly placed signal(SIGTERM, SIG_DFL) > in init_new_thread_signals(). > It disabled the UML exit handler accidently for some processes. > The correct solution is to disable the fatal handler for all > UML helper threads/processes. > Such that last_ditch_exit() does not get called multiple times > and all processes can exit due to SIGTERM. > > Cc: rjo...@redhat.com > Reported-by: Richard W.M. Jones <rjo...@redhat.com> > Signed-off-by: Richard Weinberger <rich...@nod.at>
I tested this using the libguestfs UML backend, and the original problem with not all processes being cleared up on exit has been fixed. I also observed that the exit status has changed from "killed by SIGTERM" to exit code 1. Therefore: Tested-by: Richard W.M. Jones <rjo...@redhat.com> Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-p2v converts physical machines to virtual machines. Boot with a live CD or over the network (PXE) and turn machines into KVM guests. http://libguestfs.org/virt-v2v ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite! It's a free troubleshooting tool designed for production. Get down to code-level detail for bottlenecks, with <2% overhead. Download for free and get started troubleshooting in minutes. http://pubads.g.doubleclick.net/gampad/clk?id=48897031&iu=/4140/ostg.clktrk _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
