On Sun, Dec 30, 2018 at 6:07 PM H.J. Lu <hjl.to...@gmail.com> wrote: > > On 4.19 branch, > > commit 82c8dbb376b9fa9b831c157cbb15664cb4a343e3 > Author: Thomas Gleixner <t...@linutronix.de> > Date: Mon Dec 17 13:31:05 2018 +0100 > > posix-timers: Fix division by zero bug > > commit 0e334db6bb4b1fd1e2d72c1f3d8f004313cd9f94 upstream. > > The signal delivery path of posix-timers can try to rearm the timer even > if > the interval is zero. That's handled for the common case (hrtimer) but not > for alarm timers. In that case the forwarding function raises a division > by > zero exception. > > The handling for hrtimer based posix timers is wrong because it marks the > timer as active despite the fact that it is stopped. > > Move the check from common_hrtimer_rearm() to posixtimer_rearm() to cure > both issues. > > caused: > > https://bugzilla.redhat.com/show_bug.cgi?id=1662602 >
I opened: https://bugzilla.kernel.org/show_bug.cgi?id=202123 -- H.J.
