Re: [PATCH] net: core: sk_buff: zero-fill skb->data in __alloc_skb function

On Sat, Apr 10, 2021 at 01:00:34PM +0200, Eric Dumazet wrote: > On Sat, Apr 10, 2021 at 12:12 PM Eric Dumazet wrote: > > > > On Sat, Apr 10, 2021 at 11:51 AM Phillip Potter > > wrote: > > > > > > Zero-fill skb->data in __alloc_skb function of net/core/skbuff.c, > > > up to start of struct skb_sh

[PATCH] net: core: sk_buff: zero-fill skb->data in __alloc_skb function

Zero-fill skb->data in __alloc_skb function of net/core/skbuff.c, up to start of struct skb_shared_info bytes. Fixes a KMSAN-found uninit-value bug reported by syzbot at: https://syzkaller.appspot.com/bug?id=abe95dc3e3e9667fc23b8d81f29ecad95c6f106f Reported-by: syzbot+2e406a9ac75bb71d4...@syzkalle