Markus Armbruster <[email protected]> writes: > These functions wrap ioctl(). When ioctl() fails, it sets @errno. > The wrappers then return that @errno negated. > > Except they call accel_ioctl_end() between calling ioctl() and reading > @errno. accel_ioctl_end() can clobber @errno, e.g. when a futex() > system call fails. Seems unlikely, but it's a bug all the same. > > Fix by retrieving @errno before calling accel_ioctl_end(). > > Fixes: a27dd2de68f3 (KVM: keep track of running ioctls) > Signed-off-by: Markus Armbruster <[email protected]> > Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Queued for 10.2.
