Can you attach the qemu version, kernel version and qemu command line used?
A quick search shows this possibly related bug in RHEL: https://bugzilla.redhat.com/show_bug.cgi?id=1184691 Which was closed WONTFIX with no reason. More digging is required. On Wed, Dec 14, 2016 at 12:02 AM, Seth Forshee < seth.forshee...@canonical.com> wrote: > Public bug reported: > > ADT testing for the linux package hangs at the kernel's rtc selftest, > for example: > > https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_ > 77e2ada1e7a84929a74ba3b87153c0ac > /autopkgtest-zesty/zesty/amd64/l/linux/20161212_132117_a258d@/log.gz > > Running this test manually, I've observed that this will hang in me with > various kernel versions going back to 4.4 in a VM on my machine which is > running xenial. The test runs to completion in a VM on a different > machine running zesty. > > This is the section of the test which produces the hang: > > /* Turn on update interrupts (one per second) */ > retval = ioctl(fd, RTC_UIE_ON, 0); > if (retval == -1) { > if (errno == EINVAL) { > fprintf(stderr, > "\n...Update IRQs not supported.\n"); > goto test_READ; > } > perror("RTC_UIE_ON ioctl"); > exit(errno); > } > > fprintf(stderr, "Counting 5 update (1/sec) interrupts from reading > %s:", > rtc); > fflush(stderr); > for (i=1; i<6; i++) { > /* This read will block */ > retval = read(fd, &data, sizeof(unsigned long)); > if (retval == -1) { > perror("read"); > exit(errno); > } > fprintf(stderr, " %d",i); > fflush(stderr); > irqcount++; > } > > The read blocks indefinitely most of the time. After boot it might > return once or twice before it hangs, but running the test subsequently > always hangs on the first read. I'll attach the full source for the test > (rtctest.c). > > ** Affects: qemu (Ubuntu) > Importance: Undecided > Status: New > > ** Attachment added: "rtctest.c" > https://bugs.launchpad.net/bugs/1649718/+attachment/ > 4791346/+files/rtctest.c > > -- > You received this bug notification because you are subscribed to qemu in > Ubuntu. > https://bugs.launchpad.net/bugs/1649718 > > Title: > Linux rtc self test fails in a VM under xenial > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1649718/+subscriptions > -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649718 Title: Linux rtc self test fails in a VM under xenial To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1649718/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
