Re: [syzbot] KASAN: use-after-free Read in put_pmu_ctx

Peter Zijlstra
2022-12-20T08:23:11Z

On Mon, Dec 19, 2022 at 11:33:29AM -0800, sdf@google.com wrote:
> On 12/19, Peter Zijlstra wrote:
> > On Mon, Dec 19, 2022 at 12:04:43AM -0800, syzbot wrote:

> > > HEAD commit: 13e3c7793e2f Merge tag 'for-netdev' of
> > https://git.kernel...
> > > git tree: bpf
> > > console+strace: https://syzkaller.appspot.com/x/log.txt?x=177df7e0480000
> > > kernel config:
> > https://syzkaller.appspot.com/x/.config?x=b0e91ad4b5f69c47
> > > dashboard link:
> > https://syzkaller.appspot.com/bug?extid=b8e8c01c8ade4fe6e48f

^ so syzbot knows what tree and config were used to trigger the report,
then why:

> Let's maybe try it this way:
>
> #syz test: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git
> 13e3c7793e2f

do you have to repeat that again in order for it to test something?