On 2021/2/22 14:40, Greg KH wrote:
On Mon, Feb 22, 2021 at 12:06:17PM +0800, Zheng Yejian wrote:
*** BLURB HERE ***
No blurb? Why is this needed?
.
This patch may fix the following bug:
Link:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/kernel/futex.c?h=linux-4.4.y&id=788437ba4c80d0d5e32ceaa28f872343e87236f5
> static int __fixup_pi_state_owner(u32 __user *uaddr, struct
futex_q *q,
> struct task_struct *argowner)
> {
> struct futex_pi_state *pi_state = q->pi_state;
> struct task_struct *oldowner, *newowner;
> u32 uval, curval, newval, newtid;
> int err = 0;
>
> oldowner = pi_state->owner;
>
> /* Owner died? */
> if (!pi_state->owner)
> newtid |= FUTEX_OWNER_DIED;
Variable "newtid" is used without initialized.
