On Mon, May 13, 2019 at 10:17 AM Mark Rutland <mark.rutland@xxxxxxx> wrote: > > On Mon, May 13, 2019 at 09:38:55AM -0700, 'Eric Dumazet' via syzkaller wrote: > > Various things in eBPF really require us to disable preemption > > before running an eBPF program. > > Is that true for all eBPF uses? I note that we don't disable preemption > in the lib/test_bpf.c module, for example. > > If it's a general requirement, perhaps it's worth an assertion within > BPF_PROG_RUN()? The assertion is already there :) This is how syzbot triggered the report.