From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-0.9 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) by gnuweeb.org (Postfix) with ESMTPS id CF97582051 for ; Mon, 23 Jan 2023 12:03:39 +0000 (UTC) Authentication-Results: gnuweeb.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20210112 header.b=PN/MUcF2; dkim-atps=neutral Received: by mail-wm1-f43.google.com with SMTP id m15so8812781wms.4 for ; Mon, 23 Jan 2023 04:03:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :from:to:cc:subject:date:message-id:reply-to; bh=+wSxZruxxpWWQQQw7VfMoK/lDjtvaeb+8KgHT+GUAeY=; b=PN/MUcF26ewsLllo93u+hDjnbqM4p8/7/4/mYW/93TKxCeJfzGjqMsd0VVVwAbVjox Ec+wm5adxCCMJPz7nzV278b2OfFOm242awm0aIhXyUvGmASg0r7LpQZ/TB/RTz/J1NJH mMp50RvJHA+8NE+3H22tO2hUzv5IdKEY8GlFtFEMANudsHwPIQ+pobjp5/ICKA1hgANg Jvt8O8iNQIaakxfPh+WFlVs19dVJ0qAZCRK2N95+u0+qwJyPhFwhdDBTZDVEZTvlZoaT V2+x9kkLH4qCmE79A1Ry5KYtFapYjJ9gwI8MRqMWEO9NtEGpy68pTwR02xhaCGOSM3Tb 0TvQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-disposition:mime-version:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=+wSxZruxxpWWQQQw7VfMoK/lDjtvaeb+8KgHT+GUAeY=; b=o4LUriSrW4DRvL2IWSpQNq76nflA7IcCbS/2l9dmoSDasJMlgdZa8k8qEHzokUz407 G9dHSSrLBdJLnMVOetfnePT/d4kZLg/dwrSm09yTWxKyppYQfgsRM6l4484nYXoDs/nH isEcsujGpYct577xKaidMbFtlDYX9MiBQl01k4nSOVOzucHd3hutm4oK1qIRhxlRzX6L GV5+RLsvfIgNQsUlaLpObVdSKwfhHxKeXidhGeZssbJIXPkZWHA4tyRlzAsHDOOpwpNl DgYHoG01oa5M4o2xG9gp92rN4omTVqVjDaFcN3epnPJD6RFqXYGGJkag1BVfZrf5msNb Bw2w== X-Gm-Message-State: AFqh2krhV4wndrD8A62RQP3u1/Bsc3wTPg84tgvryn6WUdNPbVnb2JBy gQw/LMimFxgBHUNHj5bDhOQ= X-Google-Smtp-Source: AMrXdXvHfZmdLRQPtnRu8+3DoyMJJeD8i4I4VxBwY773fw695a5lVcUetHB3YuKTVQ2Aa5FRnjESNQ== X-Received: by 2002:a05:600c:d2:b0:3da:f475:6480 with SMTP id u18-20020a05600c00d200b003daf4756480mr23961351wmm.7.1674475418010; Mon, 23 Jan 2023 04:03:38 -0800 (PST) Received: from localhost ([102.36.222.112]) by smtp.gmail.com with ESMTPSA id j25-20020a05600c1c1900b003c71358a42dsm14545856wms.18.2023.01.23.04.03.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Jan 2023 04:03:37 -0800 (PST) Date: Mon, 23 Jan 2023 15:03:34 +0300 From: Dan Carpenter To: oe-kbuild@lists.linux.dev, Ammar Faizi , GNU/Weeb Mailing List Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev Subject: [ammarfaizi2-block:google/android/kernel/common/upstream-f2fs-stable-linux-5.15.y 115/361] fs/f2fs/data.c:996 f2fs_grab_read_bio() warn: variable dereferenced before check 'bio' (see line 995) Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline List-Id: tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/upstream-f2fs-stable-linux-5.15.y head: 4bf3e7f429f64b802942c685cf37b02a546a25e5 commit: e8e3f1a12d05d0aef2c819664890b540dfb055af [115/361] f2fs: don't pass a bio to f2fs_target_device config: arm64-randconfig-m041-20230115 (https://download.01.org/0day-ci/archive/20230122/202301220910.UeYxE65s-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 12.1.0 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Reported-by: Dan Carpenter New smatch warnings: fs/f2fs/data.c:996 f2fs_grab_read_bio() warn: variable dereferenced before check 'bio' (see line 995) vim +/bio +996 fs/f2fs/data.c 13ba41e346170e Jaegeuk Kim 2017-09-06 982 static struct bio *f2fs_grab_read_bio(struct inode *inode, block_t blkaddr, 95ae251fe82838 Eric Biggers 2019-07-22 983 unsigned nr_pages, unsigned op_flag, 7f59b277f79e8a Eric Biggers 2021-01-04 984 pgoff_t first_idx, bool for_write) 13ba41e346170e Jaegeuk Kim 2017-09-06 985 { 13ba41e346170e Jaegeuk Kim 2017-09-06 986 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 13ba41e346170e Jaegeuk Kim 2017-09-06 987 struct bio *bio; a4b6817625e71d Daeho Jeong 2021-08-20 988 struct bio_post_read_ctx *ctx = NULL; 6dbb17961f46b2 Eric Biggers 2018-04-18 989 unsigned int post_read_steps = 0; e8e3f1a12d05d0 Christoph Hellwig 2022-02-28 990 sector_t sector; e8e3f1a12d05d0 Christoph Hellwig 2022-02-28 991 struct block_device *bdev = f2fs_target_device(sbi, blkaddr, §or); 13ba41e346170e Jaegeuk Kim 2017-09-06 992 67883ade7a98a7 Christoph Hellwig 2021-01-26 993 bio = bio_alloc_bioset(for_write ? GFP_NOIO : GFP_KERNEL, 5f7136db829960 Matthew Wilcox (Oracle 2021-01-29 994) bio_max_segs(nr_pages), &f2fs_bioset); e8e3f1a12d05d0 Christoph Hellwig 2022-02-28 @995 bio_set_dev(bio, bdev); ^^^ Dereferenced inside function 6dbb17961f46b2 Eric Biggers 2018-04-18 @996 if (!bio) ^^^^ Checked too late 13ba41e346170e Jaegeuk Kim 2017-09-06 997 return ERR_PTR(-ENOMEM); e8e3f1a12d05d0 Christoph Hellwig 2022-02-28 998 bio->bi_iter.bi_sector = sector; 27aacd28ea3b89 Satya Tangirala 2020-07-02 999 f2fs_set_bio_crypt_ctx(bio, inode, first_idx, NULL, GFP_NOFS); 13ba41e346170e Jaegeuk Kim 2017-09-06 1000 bio->bi_end_io = f2fs_read_end_io; e2e59414aae2c8 Jaegeuk Kim 2018-06-21 1001 bio_set_op_attrs(bio, REQ_OP_READ, op_flag); 13ba41e346170e Jaegeuk Kim 2017-09-06 1002 27aacd28ea3b89 Satya Tangirala 2020-07-02 1003 if (fscrypt_inode_uses_fs_layer_crypto(inode)) 7f59b277f79e8a Eric Biggers 2021-01-04 1004 post_read_steps |= STEP_DECRYPT; 7f59b277f79e8a Eric Biggers 2021-01-04 1005 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests