From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from m16.mail.163.com (m16.mail.163.com [117.135.210.4]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 690AA2F60B4; Wed, 27 Aug 2025 03:28:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=117.135.210.4 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756265344; cv=none; b=aeQll/3E6GMDI3BoBJ0KFkecdrFc5irs06tpIJt/90jscwothFARBD0GxxJLMCR3CthqNA8Z+EXBcH7bPaSLhpdz8nhzLDJnrOnJTqQepDwWXHUTv0V1Jxl+c2t1uh/4EqY1mz8V2EW9dZibZxGJeULzinjIAApzkpV0WkAc5Bc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756265344; c=relaxed/simple; bh=nnQv5qVpxeHIq4GcjPz1fWTl4vFpNwQGXWgwRqdOVRE=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=ied+h4vWnWT7Qu7a768uAnqlnx1XoI/Q3nFuaPJWGWAX7krJ/vxIpFvQfVXnBcNrEKPEJTf39Xj11u724zGGfxRlEvzzxBYHCoL7YqVtDCOpX4k/Vmyn8c3Gnb9RpIVvrvpgiusF3+fW0sUdA8PaRUd6z+qfrDN0s/cLpMrs0f0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com; spf=pass smtp.mailfrom=163.com; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b=qFAu9Vch; arc=none smtp.client-ip=117.135.210.4 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=163.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=163.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=163.com header.i=@163.com header.b="qFAu9Vch" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:To:Subject:Date:Message-Id:MIME-Version; bh=Ho 97x5wVkXo8pnoO/XNqFweCT71Ev+bvIlScmLgdN70=; b=qFAu9VchkaQH/rAj5z 3wGfR+cQ1VFnms4kO2HxXwyoNeVKK3Bxx+9qFrZDF3PfPVBK3CHE+iDJMZL3KbxP iRi5hQ+Fdf26IQmBBNBA228Hgs+LXOfp1PKeL7aUE+V8/MuYxTW71D+MAfeQzK84 zzv5EkjIGOOdMRzPkqVccn3mk= Received: from localhost.localdomain (unknown []) by gzga-smtp-mtada-g0-3 (Coremail) with SMTP id _____wAng6hNe65oUa90Eg--.1751S2; Wed, 27 Aug 2025 11:28:13 +0800 (CST) From: Feng Yang To: ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com, song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org Cc: bpf@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 bpf-next] bpf: Replace kvfree with kfree for kzalloc memory Date: Wed, 27 Aug 2025 11:28:12 +0800 Message-Id: <20250827032812.498216-1-yangfeng59949@163.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID:_____wAng6hNe65oUa90Eg--.1751S2 X-Coremail-Antispam: 1Uf129KBjvJXoW7Ww4rCFWkWF15AFW5XFy3XFb_yoW8Gr4UpF sYgrnrKw48JF10gFnrCF4UZFyUXan8Jw4xG34qyw1SvF1rtr4qqryjkryF9FyaqFWIga1F vr12vF4jyw18WFJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x07jjCJQUUUUU= X-CM-SenderInfo: p1dqww5hqjkmqzuzqiywtou0bp/1tbiZRe2eGiudCrnlwAAsU From: Feng Yang These pointers are allocated by kzalloc. Replace kvfree() with kfree() to avoid unnecessary is_vmalloc_addr() check in kvfree(). This is the remaining unmodified part from [1]. [1] https://lore.kernel.org/bpf/20250811123949.552885-1-rongqianfeng@vivo.com. Signed-off-by: Feng Yang --- Changes in v2: - Add commit message, thanks: Daniel Borkmann. - Link to v1: https://lore.kernel.org/all/20250826073920.1215368-1-yangfeng59949@163.com/ --- kernel/bpf/verifier.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 5c9dd16b2c56..b9394f8fac0e 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -2021,7 +2021,7 @@ static void free_backedges(struct bpf_scc_visit *visit) for (backedge = visit->backedges; backedge; backedge = next) { free_verifier_state(&backedge->state, false); next = backedge->next; - kvfree(backedge); + kfree(backedge); } visit->backedges = NULL; } @@ -19651,7 +19651,7 @@ static int is_state_visited(struct bpf_verifier_env *env, int insn_idx) err = maybe_enter_scc(env, new); if (err) { free_verifier_state(new, false); - kvfree(new_sl); + kfree(new_sl); return err; } -- 2.43.0