Re: [PATCH net] flow_dissector: disable preemption around BPF calls

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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.



[Index of Archives]     [Linux Samsung SoC]     [Linux Rockchip SoC]     [Linux Actions SoC]     [Linux for Synopsys ARC Processors]     [Linux NFS]     [Linux NILFS]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]


  Powered by Linux