On 15/02/2015 09:18, Gerhard Wiesinger wrote: > > ppoll([{fd=98<socket:[4660317]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=89<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=88<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=87<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=86<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=85<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=84<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=83<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=82<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=81<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=80<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=79<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=78<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=77<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=76<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=75<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=74<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=73<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=72<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=71<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=70<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=69<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=68<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=67<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=66<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=65<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=64<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=63<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=62<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=61<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=60<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, > {fd=59<anon_inode:[eventfd]>, events=POLLIN|POLLERR|POLLHUP}, ...], 71, > {0, 124112228}, NULL, 8) = 1 ([...], left {0, 124090614}) > write(7<anon_inode:[eventfd]>, "\1\0\0\0\0\0\0\0", 8) = 8 > read(6<anon_inode:[eventfd]>, "\1\0\0\0\0\0\0\0", 512) = 8 > write(7<anon_inode:[eventfd]>, "\1\0\0\0\0\0\0\0", 8) = 8
Can you grab some random backtraces ("thread apply all bt full") with gdb? What is the libvirt XML or qemu command line? Paolo > Kernel (host/guest): 3.18.6-200.fc21.x86_64 #1 SMP > qemu-kvm-2.2.0-5.fc21.x86_64 > > Bug 1178975 - endless loop in clock_gettime() on a kvm-based VM > https://bugzilla.redhat.com/show_bug.cgi?id=1178975 > is fixed (didn't occour with the test program posted at > https://bugzilla.redhat.com/show_bug.cgi?id=1178975#c28 in 30min, > happened before reproduceable in 2min, still running) > > So I guess there is another problem in the kernel with volatile and gcc > optimizations (or maybe in qemu-KVM) No, this doesn't look like volatile. _______________________________________________ virt mailing list virt@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/virt