Grzegorz Nosek [root@xxxxxxxxxxxxxx] wrote: | Simply run it as container init. Sometimes it oopses immediately, I am trying to reproduce this too and just trying to make sure I get your environment correctly. I have just built/installed libvirt 0.6.5 on Ubuntu 9.04. The bug does require libvirt+kvm right ? IOW, does this simple test repro if it is run as a container-init with say lxc-start (i.e from liblxc - see http://lxc.sourceforge.net/) ? Another simpler way to create container-init is the ns_exec program - I assume that won't create the problem ? Also in an earlier mail you mentioned that disabling the 'newinstance' mount option to devpts did not help. So does your setup work with older kernels like 2.6.28 ? | usually it goes as far as the pause. If you kill it with SIGINT then, | everything will probably be fine. But if you first kill the libvirt_lxc | process above it (holding the pty master), and only then kill init, it | should oops. | | Note that the weird mount stuff is critical here (couldn't reproduce the | oops by simply opening /dev/pts/0, even if I mounted it on /dev/console | before). | | After applying my patch from some earlier mail I can no longer crash the | kernel, but the "Hello world!" appears on my current VT, so there's | potential for container root to mess up host console. I don't know how | that happened, actually. | | Best regards, | Grzegorz Nosek | | /*------------------------------------------------------------------*/ | #include <sys/mount.h> | #include <fcntl.h> | #include <unistd.h> | #include <sys/signal.h> | | void dummy(int sig) | { | } | | int main(void) | { | sleep(2); /* wait for /dev/pts/0 to appear */ | close(0); | close(1); | close(2); | mount("/dev/pts/0", "/dev/console", NULL, MS_BIND, NULL); | signal(SIGINT, dummy); | pause(); | | open("/dev/console", O_RDWR); | dup(0); | dup(0); | write(1, "Hello world!\n", sizeof("Hello world!\n")-1); | return 0; | } _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers
