From: Yonghong Song <yonghong.song@linux.dev>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>,
sashiko-reviews@lists.linux.dev
Cc: bpf@vger.kernel.org
Subject: Re: [PATCH bpf-next v6 07/21] bpf: Resume a covered call at its landing pad
Date: Sat, 26 Sep 2026 17:04:38 -0700 [thread overview]
Message-ID: <666ad4ef-d6e7-4c6b-b986-b562ddce3ed0@linux.dev> (raw)
In-Reply-To: <DLP3OR7UHWTG.12NVK9OML0YZX@gmail.com>
On 9/26/26 1:21 AM, Alexei Starovoitov wrote:
> On Sat Sep 26, 2026 at 5:15 AM UTC, sashiko-bot wrote:
>> Thank you for your contribution! Sashiko AI review found 4 potential issue(s) to consider:
>> - [High] bpf: verifier bypass of resource leaks on unwinding without pad
>> - [High] bpf: double free via bpf_unwind_resume returning to normal path in verifier
>> - [Medium] bpf: precision tracking corruption when backtracking through bpf_unwind_resume
>> - [Medium] bpf: CFG and liveness graph mismatch for bpf_unwind_resume
> These and other bot findings look real.
> Please tell your clanker to look for bugs harder.
> sashiko shouldn't be finding such severe bugs.
Indeed, missed several critical things. Ya, need ask
more hard questions for some codes...
>
> pw-bot: cr
next prev parent reply other threads:[~2026-09-27 0:04 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-26 5:00 [PATCH bpf-next v6 00/21] bpf: Run exception cleanup landing pads when bpf_unwind() unwinds Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 01/21] bpf: Pack bpf_insn_aux_data flags into bit fields Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 02/21] bpf: Accept the compiler's exception cleanup table at program load Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 03/21] bpf: Add the bpf_unwind() and bpf_unwind_resume() kfuncs Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 04/21] bpf: Add lookups for exception cleanup resumes and landing pads Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 05/21] bpf: Prepare for an exception cleanup table before the CFG walk Yonghong Song
2026-09-26 5:16 ` sashiko-bot
2026-09-26 23:54 ` Yonghong Song
2026-09-27 20:39 ` bot+bpf-ci
2026-09-28 0:01 ` Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 06/21] bpf: Make exception landing pads reachable in the CFG Yonghong Song
2026-09-26 5:21 ` sashiko-bot
2026-09-27 0:02 ` Yonghong Song
2026-09-27 20:40 ` bot+bpf-ci
2026-09-28 0:12 ` Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 07/21] bpf: Resume a covered call at its landing pad Yonghong Song
2026-09-26 5:15 ` sashiko-bot
2026-09-26 8:21 ` Alexei Starovoitov
2026-09-27 0:04 ` Yonghong Song [this message]
2026-09-27 0:41 ` Yonghong Song
2026-09-27 20:40 ` bot+bpf-ci
2026-09-28 0:17 ` Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 08/21] bpf: Refuse a landing pad that does not resume Yonghong Song
2026-09-26 5:17 ` sashiko-bot
2026-09-27 3:06 ` Yonghong Song
2026-09-27 20:40 ` bot+bpf-ci
2026-09-28 0:29 ` Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 09/21] bpf: Refuse a private stack for a program with an exception cleanup table Yonghong Song
2026-09-26 5:00 ` [PATCH bpf-next v6 10/21] bpf: Dispatch cleanup pads by rewriting return addresses Yonghong Song
2026-09-27 20:40 ` bot+bpf-ci
2026-09-28 1:08 ` Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 11/21] bpf, x86: Dispatch exception cleanup pads at run time Yonghong Song
2026-09-26 5:15 ` sashiko-bot
2026-09-27 4:35 ` Yonghong Song
2026-09-27 20:39 ` bot+bpf-ci
2026-09-28 3:10 ` Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 12/21] bpf, arm64: " Yonghong Song
2026-09-26 5:14 ` sashiko-bot
2026-09-27 20:40 ` bot+bpf-ci
2026-09-26 5:01 ` [PATCH bpf-next v6 13/21] libbpf: Resolve the compiler's _Unwind_Resume to the kernel's kfunc Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 14/21] libbpf: Add cleanup_info to bpf_prog_load_opts Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 15/21] libbpf: Collect .bpf_cleanup records and pass them to the kernel Yonghong Song
2026-09-27 20:39 ` bot+bpf-ci
2026-09-28 3:28 ` Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 16/21] libbpf: Carry the exception cleanup table through the light skeleton Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 17/21] libbpf: Let the static linker carry .bpf_cleanup relocations Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 18/21] selftests/bpf: Add an end-to-end .bpf_cleanup exception test Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 19/21] selftests/bpf: Add __set_global() and __ret_global() test tags Yonghong Song
2026-09-26 5:18 ` sashiko-bot
2026-09-27 4:58 ` Yonghong Song
2026-09-27 20:24 ` bot+bpf-ci
2026-09-28 3:36 ` Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 20/21] selftests/bpf: Cover the exception cleanup shapes the chain does not reach Yonghong Song
2026-09-27 20:40 ` bot+bpf-ci
2026-09-28 3:49 ` Yonghong Song
2026-09-26 5:01 ` [PATCH bpf-next v6 21/21] selftests/bpf: Load an exception cleanup program from a light skeleton Yonghong Song
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