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| author | Thomas Gleixner <tglx@linutronix.de> | 2006-03-31 02:31:32 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:18:59 -0800 |
| commit | 9741ef964dc8bfeb6520825df9fed8f538c3336e (patch) | |
| tree | 6cc09d6b10a9ea9119a3a73e226300d747008bfe /kernel/futex_compat.c | |
| parent | d425b274ba83ba4e7746a40446ec0ba3267de51f (diff) | |
| download | linux-9741ef964dc8bfeb6520825df9fed8f538c3336e.tar.gz linux-9741ef964dc8bfeb6520825df9fed8f538c3336e.tar.bz2 linux-9741ef964dc8bfeb6520825df9fed8f538c3336e.zip | |
[PATCH] futex: check and validate timevals
The futex timeval is not checked for correctness. The change does not
break existing applications as the timeval is supplied by glibc (and glibc
always passes a correct value), but the glibc-internal tests for this
functionality fail.
Signed-off-by: Thomas Gleixner <tglx@tglx.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/futex_compat.c')
| -rw-r--r-- | kernel/futex_compat.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index 54274fc85321..1ab6a0ea3d14 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -129,9 +129,11 @@ asmlinkage long compat_sys_futex(u32 __user *uaddr, int op, u32 val, unsigned long timeout = MAX_SCHEDULE_TIMEOUT; int val2 = 0; - if ((op == FUTEX_WAIT) && utime) { + if (utime && (op == FUTEX_WAIT)) { if (get_compat_timespec(&t, utime)) return -EFAULT; + if (!timespec_valid(&t)) + return -EINVAL; timeout = timespec_to_jiffies(&t) + 1; } if (op >= FUTEX_REQUEUE) |