Bug#919049: posix-cpu-timers: Unbreak timer rearming (regression)

[Salvatore Bonaccorso <carnil@debian.org>]

Source: linux
Version: 4.19.13-1
Severity: serious
Tags: upstream patch
Justification: Regression / Causes FTBFS on glibc (testfailures)
Control: affects -1 src:glibc
Control: found -1 4.20-1~exp1
Control: forwarded -1 https://lkml.org/lkml/2018/12/30/169

Upstream fix 0e334db6bb4b ("posix-timers: Fix division by zero bug")
in 4.20 and backported to 4.19.13 causes for instance glibc testsuite
to fail.

References:
https://lkml.org/lkml/2018/12/30/169
https://bugzilla.redhat.com/show_bug.cgi?id=1662602
https://bugzilla.kernel.org/show_bug.cgi?id=202123

https://lore.kernel.org/lkml/20190111133500.840117406@linutronix.de/

#919019 might actually be caused by the same, but not verified yet, so
keeping them distinct.

Regards,
Salvatore