Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 07 Dec 2022 00:18:17 -0500
From:   Steven Rostedt <rostedt@goodmis.org>
To:     Alexei Starovoitov <alexei.starovoitov@gmail.com>
CC:     Masami Hiramatsu <mhiramat@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>, bpf <bpf@vger.kernel.org>,
        Borislav Petkov <bp@alien8.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Kees Cook <keescook@chromium.org>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        KP Singh <kpsingh@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Florent Revest <revest@chromium.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Christoph Hellwig <hch@infradead.org>,
        Chris Mason <clm@meta.com>
Subject: Re: [PATCH v2] panic: Taint kernel if fault injection has been used
User-Agent: K-9 Mail for Android
In-Reply-To: <CAADnVQKDZfP51WeVOeY-6RNH=MHT2BhtW6F8PaJV5-RoJOtMkQ@mail.gmail.com>
References: <167019256481.3792653.4369637751468386073.stgit@devnote3> <20221204223001.6wea7cgkofjsiy2z@macbook-pro-6.dhcp.thefacebook.com> <20221205075921.02edfe6b54abc5c2f9831875@kernel.org> <20221206021700.oryt26otos7vpxjh@macbook-pro-6.dhcp.thefacebook.com> <20221206162035.97ae19674d6d17108bed1910@kernel.org> <20221207040146.zhm3kyduqp7kosqa@macbook-pro-6.dhcp.thefacebook.com> <20221206233947.4c27cc9d@gandalf.local.home> <CAADnVQKDZfP51WeVOeY-6RNH=MHT2BhtW6F8PaJV5-RoJOtMkQ@mail.gmail.com>
Message-ID: <2ED74AA5-B2A5-43FA-ADF9-B6752FE410C4@goodmis.org>
MIME-Version: 1.0
Content-Type: text/plain;
 charset=utf-8
Content-Transfer-Encoding: 8BIT
Precedence: bulk


On December 6, 2022 11:45:17 PM EST, Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote:
>On Tue, Dec 6, 2022 at 8:39 PM Steven Rostedt <rostedt@goodmis.org> 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.

I only said the above *because* of your comment ;-) 

-- Steve


-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity and top posting.