From nobody Sat Jul 25 16:21:05 2026 Received: from mxct.zte.com.cn (mxct.zte.com.cn [183.62.165.209]) (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 149322F90C9; Thu, 16 Jul 2026 03:34:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=183.62.165.209 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784172871; cv=none; b=N7lIsAK8nxRIWBqH6c0QlXwDzUxrRNJ++cLZ9bht4USsrQp58Wwql6YFInPwH8AflC3/FlxJw/da/FE9svfdycxwMi0WHp5wlzU1HmeY/5yLQqScKF1HKipXavqGCazVLdQWLAGnUGX2d1kZhumKOalLXaVfd4YE6y4pcji//eE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784172871; c=relaxed/simple; bh=FBCMdJM1jeN4KH4oPQcPWGErjrIz0YNM6wQ+NO2wTLs=; h=Message-ID:Date:Mime-Version:From:To:Cc:Subject:Content-Type; b=p46ggdFrDmD7pkT+9W+mFW4YR/fgt9xE0dbxqI7I0C0YhM7N/Y+UZW1b5tcEF/+LcOFPYST1GpQlKYUMnU8331qorJCEOuaQaR0SuAewWZs1lKLczMW+XOZqLqson6ZZ54ttxnUfHyIZcSFTc/C9lAlU8ABvTrgAMxXXWU18lFg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn; spf=pass smtp.mailfrom=zte.com.cn; arc=none smtp.client-ip=183.62.165.209 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=zte.com.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zte.com.cn Received: from mse-fl2.zte.com.cn (unknown [10.5.228.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mxct.zte.com.cn (FangMail) with ESMTPS id 4h0zDc5q9Kz4xNtg; Thu, 16 Jul 2026 11:34:24 +0800 (CST) Received: from xaxapp04.zte.com.cn ([10.99.98.157]) by mse-fl2.zte.com.cn with SMTP id 66G3YIip041199; Thu, 16 Jul 2026 11:34:18 +0800 (+08) (envelope-from xu.xin16@zte.com.cn) Received: from mapi (xaxapp04[null]) by mapi (Zmail) with MAPI id mid32; Thu, 16 Jul 2026 11:34:19 +0800 (CST) X-Zmail-TransId: 2afb6a58513b03a-bdbe9 X-Mailer: Zmail v1.0 Message-ID: <20260716113419588y6Ycmo7pzva8buwne9yWZ@zte.com.cn> Date: Thu, 16 Jul 2026 11:34:19 +0800 (CST) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 From: To: , , , , , , , , , , , , Cc: , Subject: =?UTF-8?B?W1BBVENIIGJwZi1uZXh0XSBicGY6c3lzY2FsbDogTG9nIGVycm9yIGNvZGUgb24gdHJhbXBvbGluZSB1bmxpbmsgZmFpbHVyZQ==?= X-MAIL: mse-fl2.zte.com.cn 66G3YIip041199 X-TLS: YES X-ENVELOPE-SENDER: xu.xin16@zte.com.cn X-SOURCE-IP: 10.5.228.133 unknown Thu, 16 Jul 2026 11:34:24 +0800 X-CLEAN: YES X-Fangmail-Anti-Spam-Filtered: true X-Fangmail-MID-QID: 6A585140.000/4h0zDc5q9Kz4xNtg Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: xu xin Replace silent WARN_ON_ONCE with WARN_ONCE that prints the actual error code from bpf_trampoline_unlink_prog(). This aids debugging of race conditions during link teardown, while keeping the warning rate limited to avoid log flooding. Signed-off-by: xu xin --- kernel/bpf/syscall.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c index 6db306d23b47..2348dc33abf4 100644 --- a/kernel/bpf/syscall.c +++ b/kernel/bpf/syscall.c @@ -3626,10 +3626,13 @@ static void bpf_tracing_link_release(struct bpf_lin= k *link) { struct bpf_tracing_link *tr_link =3D container_of(link, struct bpf_tracing_link, link.link); + int err; - WARN_ON_ONCE(bpf_trampoline_unlink_prog(&tr_link->link.node, - tr_link->trampoline, - tr_link->tgt_prog)); + err =3D bpf_trampoline_unlink_prog(&tr_link->link.node, + tr_link->trampoline, + tr_link->tgt_prog); + if (err) + WARN_ONCE(err, "bpf_trampoline_unlink_prog returns error: %d\n", err); bpf_trampoline_put(tr_link->trampoline); --=20 2.25.1