On Thu, 2009-10-08 at 22:37 +0200, Michael S. Tsirkin wrote: > With commit ee3993069ff55fa6f1c64daf1e09963e340db8e4, > "posix-aio-compat: avoid signal race when spawning a thread" > winxp installation on a raw format file fails > during disk format, with a message "your > disk may be damaged". > > This commit moved signal mask from aio thread to creating thread. > It turns out if we keep the mask in aio thread as well, the problem > disappears. It should not be needed, but since this is harmless, let's > keep it around until someone inclined to debug pthread library internals > can check this issue. > > While we are at it, convert sigprocmask to pthread_sigmask > as per posix.
FWIW, I just started hitting a boot hang with qemu.git and --enable-kvm on a Fedora 11 machine with a Fedora 11 guest. I bisected it back to malc's commit, found this thread, applied Michael's patch and confirmed that it fixes the problem for me too. Cheers, Mark.
