Re: [PATCH v2] panic: Taint kernel if fault injection has been used

[Alexei Starovoitov]

On Tue, Dec 6, 2022 at 8:39 PM Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:
> >
> > [   49.281382] general protection fault, probably for non-canonical address 0x57e006e00000000: 0000 [#1] PREEMPT SMP KASAN
> > [   49.282226] CPU: 6 PID: 1688 Comm: test_progs Tainted: G    B      O       6.1.0-rc7-01508-gf0c5a2d9f234 #4343
> > [   49.283751] RIP: 0010:rethook_trampoline_handler+0xff/0x1d0
> > [   49.289900] Call Trace:
> > [   49.290083]  <TASK>
> > [   49.290248]  arch_rethook_trampoline_callback+0x6c/0xa0
> > [   49.290631]  arch_rethook_trampoline+0x2c/0x50
> > [   49.290964]  ? lock_release+0xad/0x3f0
> > [   49.291245]  ? bpf_prog_test_run_tracing+0x235/0x380
> > [   49.291609]  trace_clock_x86_tsc+0x10/0x10
> >
> > This is just running bpf selftests in parallel mode on 16-cpu VM on bpf-next.
> > Notice 'Tained' flags.
> > Please take a look.
> >
>
> "G - Proprietary module" - "O - out of tree module"
>
> Can you reproduce this without those taints?

Lol. That question is exactly the reason why my Nack stands.