On Thu, Nov 05, 2020 at 08:19:47PM -0800, Alexei Starovoitov wrote:
> > Subject: [PATCH] Update perf ring buffer to prevent corruption from
> > bpf_perf_output_event()
$Subject is broken, it lacks subsystem prefix.
> >
> > The bpf_perf_output_event() helper takes a sample size parameter of u64,
On Mon, Nov 09, 2020 at 02:22:28PM +, Kevin Sheldrake wrote:
> I triggered the corruption by sending samples larger than 64KB-24 bytes
> to a perf ring buffer from eBPF using bpf_perf_event_output(). The u16
> that holds the size in the struct perf_event_header is overflowed and
> the distanc
NAL] Re: [PATCH bpf-next v2] Update perf ring buffer to
> prevent corruption
>
> On Thu, Nov 05, 2020 at 08:19:47PM -0800, Alexei Starovoitov wrote:
> > On Thu, Nov 5, 2020 at 7:18 AM Kevin Sheldrake
> > wrote:
> > >
> > > Resent due to some f
On Thu, Nov 05, 2020 at 08:19:47PM -0800, Alexei Starovoitov wrote:
> On Thu, Nov 5, 2020 at 7:18 AM Kevin Sheldrake
> wrote:
> >
> > Resent due to some failure at my end. Apologies if it arrives twice.
> >
> > From 63e34d4106b4dd767f9bfce951f8a35f14b52072 Mon Sep 17 00:00:00 2001
> > From: Kevin
On Thu, Nov 5, 2020 at 7:18 AM Kevin Sheldrake
wrote:
>
> Resent due to some failure at my end. Apologies if it arrives twice.
>
> From 63e34d4106b4dd767f9bfce951f8a35f14b52072 Mon Sep 17 00:00:00 2001
> From: Kevin Sheldrake
> Date: Thu, 5 Nov 2020 12:18:53 +
> Subject: [PATCH] Update perf
