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authorThomas Gleixner <tglx@linutronix.de>2008-02-13 09:20:43 +0100
committerThomas Gleixner <tglx@linutronix.de>2008-02-14 22:08:30 +0100
commit5a7780e725d1bb4c3094fcc12f1c5c5faea1e988 (patch)
tree50fc5cde427f3854d0b84ba1037fef3fb4693e11 /kernel/futex_compat.c
parente760e716d47b48caf98da348368fd41b4a9b9e7e (diff)
downloadlinaro-lsk-5a7780e725d1bb4c3094fcc12f1c5c5faea1e988.tar.gz
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 <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Tested-by: Frans Pop <elendil@planet.nl>
Diffstat (limited to 'kernel/futex_compat.c')
-rw-r--r--kernel/futex_compat.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 133d558db45..7d5e4b016f3 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -176,7 +176,7 @@ asmlinkage long compat_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;
}
if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE)