From mboxrd@z Thu Jan 1 00:00:00 1970 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 4549DC83F3F for ; Mon, 4 Sep 2023 07:30:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345435AbjIDHaL (ORCPT ); Mon, 4 Sep 2023 03:30:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352436AbjIDHaK (ORCPT ); Mon, 4 Sep 2023 03:30:10 -0400 Received: from mail-pl1-f205.google.com (mail-pl1-f205.google.com [209.85.214.205]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E830CDE for ; Mon, 4 Sep 2023 00:29:53 -0700 (PDT) Received: by mail-pl1-f205.google.com with SMTP id d9443c01a7336-1bb29dc715bso13449015ad.1 for ; Mon, 04 Sep 2023 00:29:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1693812592; x=1694417392; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=eFbIYvqTnYYgKQc28cLSNWdG7PZbZN7r3uraW+UhuUE=; b=FVT9u5N9p//sijVqlmWxEMxD88k0I6E5+Kc3C+D+nSY7ZkRYEOsRQNkUF+96uugrMA qamOeYTPfEhzYR9dKfNFQXI9pQzcvJoytHJBwEBZ3DbiGQiZvpJl7sfzH78TVgeRQ+jJ lnHzFfJtbNOfEJMg8zzaXfgmaltrUvEY57CphqIQznoFIHLZ3Pvu1N3GRu51DIIg/hOR 1YlDKCdfJv/3Vr1ErigbuYKbjDguKFpVW0lXrhm//rle4s4k2i98g7J4DYgGLvgDmvrz FeQJY83T6/2qT5lvfEce0QDcfyqnQWtC8ZPvCTIay5i0sh+DZkSxRjmtQVYdB3klYa6t 77Fw== X-Gm-Message-State: AOJu0YzlJkLSQ4GU8dEynKolZlEUV3LxMze2P1xm13pZZn//aHNtSzQT QNUTIjG85Lac2UAYh/t7/DULKvhmAZxiWoV87/oUGFywwi+A X-Google-Smtp-Source: AGHT+IGpsze+qc1NNatHa3r/lYazlfTaMwFeemnbhbSrHVDYnRK5Y93e/3hv3+gdso5ZXDiXD8uuFVl6GosX9Mk04BeKHB7I7HCZ MIME-Version: 1.0 X-Received: by 2002:a17:902:e808:b0:1b9:fef8:9af1 with SMTP id u8-20020a170902e80800b001b9fef89af1mr3416919plg.5.1693812592697; Mon, 04 Sep 2023 00:29:52 -0700 (PDT) Date: Mon, 04 Sep 2023 00:29:52 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e76944060483798d@google.com> Subject: [syzbot] [xfs?] [ext4?] kernel BUG in __block_write_begin_int From: syzbot To: adilger.kernel@dilger.ca, djwong@kernel.org, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, song@kernel.org, syzkaller-bugs@googlegroups.com, tytso@mit.edu, yukuai3@huawei.com, zhang_shurong@foxmail.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 0468be89b3fa Merge tag 'iommu-updates-v6.6' of git://git.k.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=11145910680000 kernel config: https://syzkaller.appspot.com/x/.config?x=3d78b3780d210e21 dashboard link: https://syzkaller.appspot.com/bug?extid=4a08ffdf3667b36650a1 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=164f7a57a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=143b0298680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f3914b539822/disk-0468be89.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6128b0644784/vmlinux-0468be89.xz kernel image: https://storage.googleapis.com/syzbot-assets/349d98668c3a/bzImage-0468be89.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/75bd68910fd4/mount_0.gz The issue was bisected to: commit 8b0472b50bcf0f19a5119b00a53b63579c8e1e4d Author: Zhang Shurong Date: Sat Jul 22 07:53:53 2023 +0000 md: raid1: fix potential OOB in raid1_remove_disk() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16e52577a80000 final oops: https://syzkaller.appspot.com/x/report.txt?x=15e52577a80000 console output: https://syzkaller.appspot.com/x/log.txt?x=11e52577a80000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4a08ffdf3667b36650a1@syzkaller.appspotmail.com Fixes: 8b0472b50bcf ("md: raid1: fix potential OOB in raid1_remove_disk()") ------------[ cut here ]------------ kernel BUG at fs/buffer.c:2028! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 5187 Comm: syz-executor424 Not tainted 6.5.0-syzkaller-10885-g0468be89b3fa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:iomap_to_bh fs/buffer.c:2028 [inline] RIP: 0010:__block_write_begin_int+0x18f7/0x1a40 fs/buffer.c:2111 Code: af 0d 85 ff 48 8b 7c 24 08 48 c7 c6 20 22 18 8b e8 6e 8b c6 ff 0f 0b e8 97 0d 85 ff eb 13 e8 90 0d 85 ff eb c7 e8 89 0d 85 ff <0f> 0b e8 82 0d 85 ff 48 8b 7c 24 08 48 c7 c6 20 22 18 8b e8 41 8b RSP: 0018:ffffc9000418f520 EFLAGS: 00010293 RAX: ffffffff82087b37 RBX: 0000000000040000 RCX: ffff888078093b80 RDX: 0000000000000000 RSI: 0000000000040000 RDI: 00000000000d0000 RBP: ffffc9000418f6b0 R08: ffffffff82086ba2 R09: 1ffff1100f27203a R10: dffffc0000000000 R11: ffffed100f27203b R12: 00000000000d0000 R13: 0000000000000400 R14: 0000000000000000 R15: ffff8880793901d0 FS: 00007f0623ec56c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020040000 CR3: 0000000067478000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: iomap_write_begin+0xaf6/0x1f00 fs/iomap/buffered-io.c:772 iomap_write_iter fs/iomap/buffered-io.c:907 [inline] iomap_file_buffered_write+0x587/0x1020 fs/iomap/buffered-io.c:968 blkdev_buffered_write block/fops.c:634 [inline] blkdev_write_iter+0x41d/0x5c0 block/fops.c:688 call_write_iter include/linux/fs.h:1985 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x782/0xaf0 fs/read_write.c:584 ksys_write+0x1a0/0x2c0 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0623f2b6c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0623ec5218 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f0623fb9478 RCX: 00007f0623f2b6c9 RDX: 000000000208e24b RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00007f0623fb9470 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0623f7f694 R13: 00007f0623f7f1c0 R14: 0031656c69662f2e R15: 6f6f6c2f7665642f Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:iomap_to_bh fs/buffer.c:2028 [inline] RIP: 0010:__block_write_begin_int+0x18f7/0x1a40 fs/buffer.c:2111 Code: af 0d 85 ff 48 8b 7c 24 08 48 c7 c6 20 22 18 8b e8 6e 8b c6 ff 0f 0b e8 97 0d 85 ff eb 13 e8 90 0d 85 ff eb c7 e8 89 0d 85 ff <0f> 0b e8 82 0d 85 ff 48 8b 7c 24 08 48 c7 c6 20 22 18 8b e8 41 8b RSP: 0018:ffffc9000418f520 EFLAGS: 00010293 RAX: ffffffff82087b37 RBX: 0000000000040000 RCX: ffff888078093b80 RDX: 0000000000000000 RSI: 0000000000040000 RDI: 00000000000d0000 RBP: ffffc9000418f6b0 R08: ffffffff82086ba2 R09: 1ffff1100f27203a R10: dffffc0000000000 R11: ffffed100f27203b R12: 00000000000d0000 R13: 0000000000000400 R14: 0000000000000000 R15: ffff8880793901d0 FS: 00007f0623ec56c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0623f66850 CR3: 0000000067478000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup