From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> stable inclusion from stable-5.10.66 commit f49fd9882f54a5c91d211f5f37432d50f4a1bb1c bugzilla: 182374 https://gitee.com/openeuler/kernel/issues/I4EH73 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- This reverts commit 13ccaef77ee86047033c50bf59cb19e0dda3aa97 which is commit 406dd42bd1ba0c01babf9cde169bb319e52f6147 upstream. It is reported to cause regressions. A proposed fix has been posted, but it is not in a released kernel yet. So just revert this from the stable release so that the bug is fixed. If it's really needed we can add it back in in a future release. Link: https://lore.kernel.org/r/87ilz1pwaq.fsf@wylie.me.uk Reported-by: "Alan J. Wylie" <alan@wylie.me.uk> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Frederic Weisbecker <frederic@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Chen Jun <chenjun102@huawei.com> Acked-by: Weilong Chen <chenweilong@huawei.com> Signed-off-by: Chen Jun <chenjun102@huawei.com> --- kernel/time/posix-cpu-timers.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/time/posix-cpu-timers.c b/kernel/time/posix-cpu-timers.c index d3d42b7637a1..08c033b80256 100644 --- a/kernel/time/posix-cpu-timers.c +++ b/kernel/time/posix-cpu-timers.c @@ -1346,6 +1346,8 @@ void set_process_cpu_timer(struct task_struct *tsk, unsigned int clkid, } } + if (!*newval) + return; *newval += now; } -- 2.20.1