From nobody Sat Feb 7 16:39:30 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E87ECC001DC for ; Wed, 12 Jul 2023 15:03:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232997AbjGLPDG (ORCPT ); Wed, 12 Jul 2023 11:03:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233014AbjGLPC4 (ORCPT ); Wed, 12 Jul 2023 11:02:56 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54C66BB; Wed, 12 Jul 2023 08:02:55 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id C049B61830; Wed, 12 Jul 2023 15:02:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 85FD7C433C9; Wed, 12 Jul 2023 15:02:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1689174174; bh=S1pegj1qL8CVQOEK2cfiVJMp8lPq/SPQs4CNL9BiRFA=; h=From:To:Cc:Subject:Date:From; b=ZUnYHTDJSUDnL5/k82eolh32DV9zKzMvnsTlBrXPu+hQeX6CHzCz+cSvhJimVipd/ FqCUvMZ7t4FjCm5M+i90mDYMzSyPXCfOPhpsu42G1Jjhy48Ou6f/ra7czYpMgvJXtC 1RjGbP19OiULk8twbfGC7tQlISlAjnQyQsDczsPFoTmCHoSjJDZu3+EWfAX8gAywxV iX6ysP8WteLer5B4u6ONjtmLfNAKMjtPoftDrlrkBzJql2XyCp5yoMEf0ONbSF+et9 w0W9XFikfyhfI5fTXKAaTSqIOuFH27WdDS7BkqGNdc5qUOufjkja7p7/dVKe9Z0p6E lGyPtK2LjX/4Q== From: Jeff Layton To: brauner@kernel.org, "Theodore Ts'o" , Andreas Dilger , Jan Kara Cc: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] ext4: fix decoding of raw_inode timestamps Date: Wed, 12 Jul 2023 11:02:49 -0400 Message-ID: <20230712150251.163790-1-jlayton@kernel.org> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" When we covert a timestamp from raw disk format, we need to consider it to be signed, as the value may represent a date earlier than 1970. This fixes generic/258 on ext4. Cc: Jan Kara Fixes: f2ddb05870fb ("ext4: convert to ctime accessor functions") Signed-off-by: Jeff Layton Acked-by: Theodore Ts'o --- fs/ext4/ext4.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) It might be best to just squash this fix in with the ext4 conversion in the vfs tree. diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index d63543187359..2af347669db7 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -877,7 +877,7 @@ static inline __le32 ext4_encode_extra_time(struct time= spec64 ts) static inline struct timespec64 ext4_decode_extra_time(__le32 base, __le32 extra) { - struct timespec64 ts =3D { .tv_sec =3D le32_to_cpu(base) }; + struct timespec64 ts =3D { .tv_sec =3D (signed)le32_to_cpu(base) }; =20 if (unlikely(extra & cpu_to_le32(EXT4_EPOCH_MASK))) ts.tv_sec +=3D (u64)(le32_to_cpu(extra) & EXT4_EPOCH_MASK) << 32; --=20 2.41.0