From: Martin KaFai Lau <martin.lau@linux.dev>
To: Jakub Kicinski <kuba@kernel.org>, Amery Hung <ameryhung@gmail.com>
Cc: David Miller <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
netdev@vger.kernel.org, bpf@vger.kernel.org
Subject: Re: pull-request: bpf-next 2025-09-23
Date: Wed, 24 Sep 2025 17:09:52 -0700 [thread overview]
Message-ID: <35282ea2-7ccb-450a-aa78-491f2e84cbf3@linux.dev> (raw)
In-Reply-To: <20250924151831.66c38c74@kernel.org>
On 9/24/25 3:18 PM, Jakub Kicinski wrote:
> 74: (15) if r1 == 0x20 goto pc+309 384: frame1: R0=map_value(map=map_xdp_setup,ks=4,vs=4) R1=32 R2=0xfffffeff R3=scalar(smin=0xffffffff80000000,smax=0x7fffffff) R4=16 R5=1 R6=2 R7=ctx() R8=pkt(off=34,r=42) R9=scalar() R10=fp0 fp-336=mmmmmmmm
> ; switch (*val) { @ xdp_native.bpf.c:594
> 384: (b7) r4 = 32 ; frame1: R4_w=32
> 385: (05) goto pc+1
> 387: (7b) *(u64 *)(r10 -352) = r5 ; frame1: R5=1 R10=fp0 fp-352_w=1
> 388: (1f) r8 -= r9
The "hdr_len = (void *)udph_ptr - data + sizeof(struct udphdr);" calculation
needs to reload the ctx->data after filter_udphdr(). Amery will send a fix.
next prev parent reply other threads:[~2025-09-25 0:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-24 5:03 pull-request: bpf-next 2025-09-23 Martin KaFai Lau
2025-09-24 17:30 ` patchwork-bot+netdevbpf
2025-09-24 22:18 ` Jakub Kicinski
2025-09-25 0:09 ` Martin KaFai Lau [this message]
2025-09-25 0:29 ` Jakub Kicinski
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=35282ea2-7ccb-450a-aa78-491f2e84cbf3@linux.dev \
--to=martin.lau@linux.dev \
--cc=ameryhung@gmail.com \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=edumazet@google.com \
--cc=kuba@kernel.org \
--cc=netdev@vger.kernel.org \
--cc=pabeni@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.