Re: [PATCH bpf-next 3/4] xsk: avoid store-tearing when assigning umem
From: Jonathan Lemon <hidden>
Date: 2019-08-23 16:44:07
Also in:
bpf
On 22 Aug 2019, at 2:13, Björn Töpel wrote:
From: Björn Töpel <redacted>
The umem member of struct xdp_sock is read outside of the control
mutex, in the mmap implementation, and needs a WRITE_ONCE to avoid
potentional store-tearing.
Fixes: 423f38329d26 ("xsk: add umem fill queue support and mmap")
Signed-off-by: Björn Töpel <redacted>Acked-by: Jonathan Lemon <redacted>