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Date: Tue, 12 Jan 2021 21:21:48 +0100 From: Daniel Borkmann <daniel@...earbox.net> To: Andrii Nakryiko <andrii.nakryiko@...il.com>, Gilad Reti <gilad.reti@...il.com> Cc: bpf <bpf@...r.kernel.org>, Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>, Martin KaFai Lau <kafai@...com>, Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>, John Fastabend <john.fastabend@...il.com>, KP Singh <kpsingh@...nel.org>, Networking <netdev@...r.kernel.org>, open list <linux-kernel@...r.kernel.org> Subject: Re: [PATCH bpf 1/2] bpf: support PTR_TO_MEM{,_OR_NULL} register spilling On 1/12/21 8:46 PM, Andrii Nakryiko wrote: > On Tue, Jan 12, 2021 at 1:14 AM Gilad Reti <gilad.reti@...il.com> wrote: >> >> Add support for pointer to mem register spilling, to allow the verifier >> to track pointer to valid memory addresses. Such pointers are returned >> for example by a successful call of the bpf_ringbuf_reserve helper. >> >> This patch was suggested as a solution by Yonghong Song. >> >> The patch was partially contibuted by CyberArk Software, Inc. >> >> Fixes: 457f44363a88 ("bpf: Implement BPF ring buffer and verifier >> support for it") > > Surprised no one mentioned this yet. Fixes tag should always be on a > single unwrapped line, however long it is, please fix. Especially for first-time contributors there is usually some luxury that we would have fixed this up on the fly while applying. ;) But given a v2 is going to be sent anyway it's good to point it out for future reference, agree. Thanks, Daniel
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