From: John Fastabend <john.fastabend@gmail.com>
To: Song Liu <song@kernel.org>, John Fastabend <john.fastabend@gmail.com>
Cc: bpf <bpf@vger.kernel.org>, Networking <netdev@vger.kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>
Subject: Re: [bpf PATCH 8/9] bpf: sockmap/tls, tls_push_record can not handle zero length skmsg
Date: Thu, 09 Jan 2020 13:25:33 -0800 [thread overview]
Message-ID: <5e179a4def787_28762abb601485c027@john-XPS-13-9370.notmuch> (raw)
In-Reply-To: <CAPhsuW774z68g_Y-C1XU70H-x6S2mr+Hd0-qY02E9aZBJjepkA@mail.gmail.com>
Song Liu wrote:
> On Wed, Jan 8, 2020 at 1:17 PM John Fastabend <john.fastabend@gmail.com> wrote:
> >
> > When passed a zero length skmsg tls_push_record() causes a NULL ptr
> > deref. To resolve for fixes do a simple length check at start of
> > routine.
>
> Could you please include the stack dump for the NULL deref?
>
> Thanks,
> Song
Sure I'll send a v2 with the stack dump.
next prev parent reply other threads:[~2020-01-09 21:25 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-08 21:13 [bpf PATCH 0/9] Fixes for sockmap/tls from more complex BPF progs John Fastabend
2020-01-08 21:14 ` [bpf PATCH 1/9] bpf: sockmap/tls, during free we may call tcp_bpf_unhash() in loop John Fastabend
2020-01-09 1:34 ` Song Liu
2020-01-08 21:14 ` [bpf PATCH 2/9] bpf: sockmap, ensure sock lock held during tear down John Fastabend
2020-01-09 17:10 ` Song Liu
2020-01-08 21:14 ` [bpf PATCH 3/9] bpf: sockmap/tls, push write_space updates through ulp updates John Fastabend
2020-01-09 10:33 ` Jakub Sitnicki
2020-01-09 21:22 ` John Fastabend
2020-01-10 13:40 ` Jakub Sitnicki
2020-01-08 21:14 ` [bpf PATCH 4/9] bpf: sockmap, skmsg helper overestimates push, pull, and pop bounds John Fastabend
2020-01-09 18:37 ` Song Liu
2020-01-08 21:15 ` [bpf PATCH 5/9] bpf: sockmap/tls, msg_push_data may leave end mark in place John Fastabend
2020-01-09 18:51 ` Song Liu
2020-01-08 21:15 ` [bpf PATCH 6/9] bpf: sockmap/tls, tls_sw can create a plaintext buf > encrypt buf John Fastabend
2020-01-09 23:04 ` Jonathan Lemon
2020-01-08 21:15 ` [bpf PATCH 7/9] bpf: sockmap/tls, skmsg can have wrapped skmsg that needs extra chaining John Fastabend
2020-01-09 23:13 ` Jonathan Lemon
2020-01-08 21:16 ` [bpf PATCH 8/9] bpf: sockmap/tls, tls_push_record can not handle zero length skmsg John Fastabend
2020-01-09 20:08 ` Song Liu
2020-01-09 21:25 ` John Fastabend [this message]
2020-01-10 23:20 ` John Fastabend
2020-01-08 21:16 ` [bpf PATCH 9/9] bpf: sockmap/tls, fix pop data with SK_DROP return code John Fastabend
2020-01-09 23:28 ` Jonathan Lemon
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