From nobody Wed Oct 1 23:27:55 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E6C43272E45; Fri, 26 Sep 2025 09:27:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758878860; cv=none; b=cRRQyyL2tXPwKgleMMLKRPmCZU6R/qnRH9JNTs1Tv/OgJhswQR/Swu60iQ4bStFMBQsuR+ALkfoPUbIKk/TOGvYxlqwi0GTv/6ey/5bF0hCUP9P+W0MUQcm1/HrYZ8r38+T/LVOFDWt60FQ5dtKgMVhnOPr3zcPxPlm5NTfc/AU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758878860; c=relaxed/simple; bh=vprmR6X+cg45VMVYdEeSAxa+RAMJCkL0EYYKdgzaUhU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=JhsoeubdltDpul2jMtmW+4OHAFi9zEgV/IqOuB1sYgpega+Cc2Tm4v8M/lmWEmL8M77OrNbfRNKKZcGxmWKAGJwSoO8Dl3z6IuopbZtSzsbcjF+Z9wBZ6psHGykXNcDteoPUpgK7qtdYXlrJ/H2lPcjl02slcDqSgAwnXXkq4dk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hr41uY50; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Hr41uY50" Received: by smtp.kernel.org (Postfix) with ESMTPS id 882F6C113D0; Fri, 26 Sep 2025 09:27:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1758878859; bh=vprmR6X+cg45VMVYdEeSAxa+RAMJCkL0EYYKdgzaUhU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=Hr41uY50Vu58+MMNvGEASfqV1WkjpObYPWd3sropOP2zFf23ih/YPIIhY5YnODegh qT5E6qj+9QkQO07/MKfZIkkPlanxMUPHMfkwoWHk/65uvoYmz6AJ77pPzsZ3Y5SwQd Dr3OrP9ABFzkme7BE8ZboJaZsoZp6JgXbv5rggbKwxEv0q8Kh0jGx/a/g0OpN0rZEX oV9Yg1Ol342VLLeDyzOTZr0+hIPt+r4P9SHvguDz/+MiJ5UaoH7tZv35DAvYsQ+3bM Iv9UE1ezdPvythHmdbkXdJKYxl2GpvjU7H2MoJHjXMKjogLjvhf5GVl9/fHhxzl6+C 7a8fJ5zsSuofA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E6DECAC5BC; Fri, 26 Sep 2025 09:27:39 +0000 (UTC) From: Dominique Martinet via B4 Relay Date: Fri, 26 Sep 2025 18:27:30 +0900 Subject: [PATCH 2/3] 9p: fix /sys/fs/9p/caches overwriting itself Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250926-v9fs_misc-v1-2-a8b3907fc04d@codewreck.org> References: <20250926-v9fs_misc-v1-0-a8b3907fc04d@codewreck.org> In-Reply-To: <20250926-v9fs_misc-v1-0-a8b3907fc04d@codewreck.org> To: "Randall P. Embry" , Eric Van Hensbergen , Latchesar Ionkov , Christian Schoenebeck Cc: v9fs@lists.linux.dev, linux-kernel@vger.kernel.org, Dominique Martinet X-Mailer: b4 0.15-dev-7be4f X-Developer-Signature: v=1; a=openpgp-sha256; l=911; i=asmadeus@codewreck.org; h=from:subject:message-id; bh=sblDE7el9v90HXEfOfwFbTsacdQEvKtucuy7CFjReRU=; b=owEBbQKS/ZANAwAKAatOm+xqmOZwAcsmYgBo1lyJ06819UxMXPHdVaEM7RHAphy86FM+fibHn WmW1B0P+cCJAjMEAAEKAB0WIQT8g9txgG5a3TOhiE6rTpvsapjmcAUCaNZciQAKCRCrTpvsapjm cJxmD/0ZYZEPA8otf0o8CjXDON/3oJm+5fldLBC9ZoOpLVZVgcjTnY4dYbBGWN4rT3qHNZNGIw1 QozJvZPjFfk5FkVQLMBk5rkpNUcITFRM1nyHmj+iz+lzbEoDYuRwo0orzc3bPjW7JhZNALm4Z7g fri6mnRrJtC43hH6ejE+wvi+T/gC+mtHTYfIcIl1FAOSaVapI50zzv/jvjdIy2AhhWc02g+fWJ7 FNt6RysLKlryCgBW13Z5q6FmRaXhVTBsg3NuUtBKwmn2D1eOeVQgjXVuKvalpcH6//Up20ZodlQ Qq7l3+UYJXPTmwlUTbhTxKZmer+bF92lSp2V/nu1WWqDNz0VghWFGYWy7TQfh+s29QblER4dvZZ +8D05pNzOioTs8xoreljgBACHd7hk6GlOhpsASEIgkyFVRr+c2F3pvRjg8O8qW5kKEg4DIOM6Dg BBLTbUKmud+Wqb7+b4BEV+JEbhCJIp+A6mbCda/zaCmVPfTZ80iXwvLfPs/knDoNTZzveov0ly8 yqVKV/NFc79jcoBn6K6236pQT0OsGlAw6o6psarrCiBWFJ/uinlwsfjfM71VQ76M5mvZsdbxNl6 nBuZmht1HHM7g5yoHhbOFI7gQOGY7CBVaHzrywNXOOkycKKWOj/2GunNrqe8lh++eig1jVMgI3t fGoqf4mQ5SWT0cA== X-Developer-Key: i=asmadeus@codewreck.org; a=openpgp; fpr=B894379F662089525B3FB1B9333F1F391BBBB00A X-Endpoint-Received: by B4 Relay for asmadeus@codewreck.org/default with auth_id=435 X-Original-From: Dominique Martinet Reply-To: asmadeus@codewreck.org From: "Randall P. Embry" caches_show() overwrote its buffer on each iteration, so only the last cache tag was visible in sysfs output. Properly append with snprintf(buf + count, =E2=80=A6). Signed-off-by: Randall P. Embry Signed-off-by: Dominique Martinet --- fs/9p/v9fs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 01e70a464b6039231df272e43b4ebdd3b5afb967..4d289c56578fb15e45d8e94a264= 977898973cb31 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -560,7 +560,7 @@ static ssize_t caches_show(struct kobject *kobj, spin_lock(&v9fs_sessionlist_lock); list_for_each_entry(v9ses, &v9fs_sessionlist, slist) { if (v9ses->cachetag) { - n =3D snprintf(buf, limit, "%s\n", v9ses->cachetag); + n =3D snprintf(buf + count, limit, "%s\n", v9ses->cachetag); if (n < 0) { count =3D n; break; --=20 2.51.0