On 11/08/2017 07:54 AM, Mike Rapoport wrote: > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx> Thanks, Mike. Applied. Cheers, Michael > --- > man2/userfaultfd.2 | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2 > index 1c9e64b..08c41e1 100644 > --- a/man2/userfaultfd.2 > +++ b/man2/userfaultfd.2 > @@ -465,6 +465,16 @@ for checkpoint/restore mechanisms, > as well as post-copy migration to allow (nearly) uninterrupted execution > when transferring virtual machines and Linux containers > from one host to another. > +.SH BUGS > +If the > +.B UFFD_FEATURE_EVENT_FORK > +is enabled and a system call from the > +.BR fork (2) > +family is interrupted by a signal or failed,q a stale userfaultfd descriptor > +might be created. > +In this case a spurious > +.B UFFD_EVENT_FORK > +will be delivered to the userfaultfd monitor. > .SH EXAMPLE > The program below demonstrates the use of the userfaultfd mechanism. > The program creates two threads, one of which acts as the > -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
