time: Move ktime_t overflow checking into timespec_valid_strict
Andreas Bombe reported that the added ktime_t overflow checking added to
timespec_valid in commit 4e8b14526ca7 ("time: Improve sanity checking of
timekeeping inputs") was causing problems with X.org because it caused
timeouts larger then KTIME_T to be invalid.
Previously, these large timeouts would be clamped to KTIME_MAX and would
never expire, which is valid.
This patch splits the ktime_t overflow checking into a new
timespec_valid_strict function, and converts the timekeeping codes
internal checking to use this more strict function.
Reported-and-tested-by: Andreas Bombe <firstname.lastname@example.org>
Cc: Zhouping Liu <email@example.com>
Cc: Ingo Molnar <firstname.lastname@example.org>
Cc: Prarit Bhargava <email@example.com>
Cc: Thomas Gleixner <firstname.lastname@example.org>
Signed-off-by: John Stultz <email@example.com>
Signed-off-by: Linus Torvalds <firstname.lastname@example.org>
2 files changed