From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7801039A802; Fri, 24 Jul 2026 20:50:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784926244; cv=none; b=qa6IwJBuV6p35SwBDC7SNf76vVDHwqzU+O1i+AN29TBdN7vvYTIBkn5wBEG47SPZ2hUqAUtmhQ0Fb4AdkkZNXmEHCdreVpkA+IwtBUxKZ/O1pEmpFdxlsZuqSIrKgdUKR213Lalr4mShoceuVlF2Ce5vpUyCuj2p6v1wesEo8TY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784926244; c=relaxed/simple; bh=T5FhBI+Ux3nf0bv5vM+6pOEK1UdrVKkPHV4ey/G1v0o=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=cKHqhYuPMI3RIx/HnzYeiv83/59DRBBKxjMtC2L5etjTXsfSK2nvomhy9rvBhRSrtH8qjbQQgEDOTz6Ko3WGxRGZ6TASqPyV2HsQemxuWbsAsY93e/Up1W9ph483ttfAaNayKia0mKW+HeoLPFOIB65Kgh8mN0VCxLmC3Ma7IQE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bwlxL+UG; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bwlxL+UG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EA4CD1F000E9; Fri, 24 Jul 2026 20:50:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784926243; bh=/ChcfBdIW71Nq92NRFCyt8DOkb52JvorM6JPHEyvc7k=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=bwlxL+UGQIyejR/SkBtSS729VxWs51F3BFKZlacjeN+ltHj4vuVlX4bNmP1BWWpz6 N1uj68MwyiocGLyC5FrICQZznZeH/A+DJ93KmsAGupb4YjZuvEtclyT0rd2LMXmesI p/503QWTE5bJ1SfZgh2Cir4jQ/tpT7C0Vc18lPkeUvLZ0uEbvcLMw/Vst0yVjgDo7M 8UUCWozKuOLAspvWH9BI49xsnG9Jd+kcKkJB+SGD12J+pdgTTBpYByrlDuzCU+IYtV cff5HVA/D4TB+VtTuYYVGjQSJX7qYIsVToGjsw66P9/TsuwpHQ8qihIe11Xxzmw+DA kMCwb82hVPTbw== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 5687038111D2; Fri, 24 Jul 2026 20:50:11 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next v2 0/2] bpf: Fix WARNING in bpf_tracing_link_release From: patchwork-bot+netdevbpf@kernel.org Message-Id: <178492621014.3303195.2965122653260784419.git-patchwork-notify@kernel.org> Date: Fri, 24 Jul 2026 20:50:10 +0000 References: <20260722151909.69142-1-leon.hwang@linux.dev> In-Reply-To: <20260722151909.69142-1-leon.hwang@linux.dev> To: Leon Hwang Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, eddyz87@gmail.com, memxor@gmail.com, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, jolsa@kernel.org, emil@etsalapatis.com, shuah@kernel.org, tanjingguo@huawei.com, pulehui@huawei.com, malin89@huawei.com, maciej.fijalkowski@intel.com, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, kernel-patches-bot@fb.com Hello: This series was applied to bpf/bpf-next.git (master) by Kumar Kartikeya Dwivedi : On Wed, 22 Jul 2026 23:19:07 +0800 you wrote: > The trampoline could be corrupted by the blindly > 'tr->flags = BPF_TRAMP_F_TAIL_CALL_CTX' in verifier. > > 1. A fexit attached to a tail_call_reachable prog. 'tr->flags' became > 'BPF_TRAMP_F_CALL_ORIG | BPF_TRAMP_F_TAIL_CALL_CTX'. And, the > trampoline would poke the target prog's nop insn using jmp insn instead > of call insn. > 2. Another fexit loaded with the same tail_call_reachable prog target. > 'tr->flags' became 'BPF_TRAMP_F_TAIL_CALL_CTX'. > 3. Close the first fexit link. Due to no BPF_TRAMP_F_CALL_ORIG in > 'tr->flags', the trampoline will fail to restore the prog's nop insn > using call insn. > > [...] Here is the summary with links: - [bpf-next,v2,1/2] bpf: Fix WARNING in bpf_tracing_link_release https://git.kernel.org/bpf/bpf-next/c/61aaa8782bec - [bpf-next,v2,2/2] selftests/bpf: Verify no warning when close fexit link https://git.kernel.org/bpf/bpf-next/c/09e074666b7d You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html