Patch "timekeeping: Increment clock_was_set_seq in timekeeping_init()" has been added to the 4.2-stable tree
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This is a note to let you know that I've just added the patch titled
timekeeping: Increment clock_was_set_seq in timekeeping_init()
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
timekeeping-increment-clock_was_set_seq-in-timekeeping_init.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
56fd16cabac9cd8f15e2902898a9d0cc96e2fa70Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <[email protected]>
Date: Fri, 16 Oct 2015 15:50:22 +0200
Subject: timekeeping: Increment clock_was_set_seq in timekeeping_init()
From: Thomas Gleixner <[email protected]>
commit 56fd16cabac9cd8f15e2902898a9d0cc96e2fa70 upstream.
timekeeping_init() can set the wall time offset, so we need to increment the clock_was_set_seq counter. That way hrtimers will pick up the early offset immediately. Otherwise on a machine which does not set wall time later in the boot process the hrtimer offset is stale at 0 and wall time timers are going to expire with a delay of 45 years.
--- kernel/time/timekeeping.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
kernel/time/timekeeping.c +1 -1
@@ -1244,7 +1244,7 @@ void __init timekeeping_init(void)set_normalized_timespec64 (&tmp, -boot.tv_sec, -boot.tv_nsec);tk_set_wall_to_mono (tk, tmp); -timekeeping_update (tk,TK_MIRROR ); +timekeeping_update (tk,TK_MIRROR |TK_CLOCK_WAS_SET );write_seqcount_end (&tk_core.seq);raw_spin_unlock_irqrestore (&timekeeper_lock, flags);
Patches currently in stable-queue which might be from [email protected] are
queue-4.2/timekeeping-increment-clock_was_set_seq-in-timekeeping_init.patch