From 5a7780e725d1bb4c3094fcc12f1c5c5faea1e988 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 13 Feb 2008 09:20:43 +0100 Subject: hrtimer: check relative timeouts for overflow Various user space callers ask for relative timeouts. While we fixed that overflow issue in hrtimer_start(), the sites which convert relative user space values to absolute timeouts themself were uncovered. Instead of putting overflow checks into each place add a function which does the sanity checking and convert all affected callers to use it. Thanks to Frans Pop, who reported the problem and tested the fixes. Signed-off-by: Thomas Gleixner Acked-by: Ingo Molnar Tested-by: Frans Pop --- kernel/futex.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/futex.c') diff --git a/kernel/futex.c b/kernel/futex.c index a6baaec44b8f..221f2128a437 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -2116,7 +2116,7 @@ asmlinkage long sys_futex(u32 __user *uaddr, int op, u32 val, t = timespec_to_ktime(ts); if (cmd == FUTEX_WAIT) - t = ktime_add(ktime_get(), t); + t = ktime_add_safe(ktime_get(), t); tp = &t; } /* -- cgit v1.2.3