linux-kernel - Re: kernel BUG at net/rxrpc/local

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Message-ID: <3135.1565706180@warthog.procyon.org.uk>
Date:   Tue, 13 Aug 2019 15:23:00 +0100
From:   David Howells <dhowells@...hat.com>
To:     Dmitry Vyukov <dvyukov@...gle.com>
Cc:     dhowells@...hat.com,
        syzbot <syzbot+1e0edc4b8b7494c28450@...kaller.appspotmail.com>,
        Eric Biggers <ebiggers@...nel.org>,
        David Miller <davem@...emloft.net>,
        linux-afs@...ts.infradead.org, LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: kernel BUG at net/rxrpc/local_object.c:LINE!

Dmitry Vyukov <dvyukov@...gle.com> wrote:

> > > Please send a patch for testing that enables this tracing
> > > unconditionally. This should have the same effect. There is no way to
> > > hook into a middle of the automated process and arbitrary tune things.
> >
> > I don't know how to do that off hand.  Do you have an example?
> 
> Few messages above I asked it to test:
> https://groups.google.com/d/msg/syzkaller-bugs/gEnZkmEWf1s/r2_X_KVQAQAJ
> 
> Basically, git repo + branch + patch. Here are the docs:
> https://github.com/google/syzkaller/blob/master/docs/syzbot.md#testing-patches

I meant that I don't know how to turn a tracepoint on from inside the kernel.

David