From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B9793257AC1 for ; Tue, 15 Apr 2025 22:23:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.198 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744755784; cv=none; b=MKyYzT0BYzdz1rf7VLsq0Fo2iutfn+5NBEG3Ohqzjgai2Fei71j2HPBLxHpGA66CtJqUTdipeU3z4H50DCH4eWafgDww3AAiykunGuJ2U7nc2MKE6qMkU/evsJcTOZ+GpKESyrWlYKW6Fa5vQ0x9eQtLhSd5BsAK6uT1pyN0u+c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744755784; c=relaxed/simple; bh=V3suW2v5QBE6nG88sxJLLDE1MJ3MqszmlsAMfTuktVU=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=k4wgTMOXzh8Mn1w5bDAjdQj6d6NNa/tUZn0/jh9J2eRi0xVtLNzhmrSeJCyCJP8LtPeq/JcqHjkamZcX6eqzAPeVu5fkBoaz7jMNWWc87y4qaN2IJL2KS/U48aMlGhLf9LZmASMO7yuvVP43IzmTSqvzoMNAHnLE6ujSdBLItWM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.198 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-il1-f198.google.com with SMTP id e9e14a558f8ab-3d451ad5b2dso1511735ab.0 for ; Tue, 15 Apr 2025 15:23:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744755782; x=1745360582; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=3i7903g5EAF+f4ORhceVKA5HXfzObg0MAESpYv0oEyQ=; b=hjuLXMA7rKEDOQ6OaKMxBl+U+bEc9/47YI4RCeiUBgbhpIj6RYu+4s6TaJpj/jV14x XpfnG6edlO90ma7A5XBbOuS0kewFaon0uC0Z7IFQA59Df8aT6TX+pwJ7vnV7cYmNzOE6 h4YZZy6zuoiiWHq8PTNsFdBUc4isxHaeMy0gKYoEkxDkKr31CfwIFTLsx29wQP6jKczn GfF7U4f1NDe8rgcllcJ3i7yk9bzNSxUMMYVOEm3rZGdQW/nwzVH4Lib5wlhfuiRXYaGQ dZrJqNBKuA9+lGoEAXfWdadKWVdC3TCO0nodOeh4ygjCS8cvVwrtaNj7ckxh7Ykq0HIK bvMw== X-Forwarded-Encrypted: i=1; AJvYcCXU3Gzi1pPCrYzbVDR2VXab+EIYdwCrZfAcmzj3qYC4HDHb6S9lytzOj1DXUMM8g2dD/daL2tqFwO87MXs=@vger.kernel.org X-Gm-Message-State: AOJu0YyPxh4bLB8EhPq6qbw+y4Wce3CSsd4ESLpLVj9lke7u6uiqUepp FUalJP/l+UGSM8laoxYtsg7HWhkD4rRpsAW6NsqBUB9L5Wj0EV9v+LP7rnk5iBvsPiVe46iZcnD NOrbZZ6RBaW8KUlXND/HHIlER1NQU3Esnf97u4EqY+qlSdrC/PNQJNG4= X-Google-Smtp-Source: AGHT+IEBKnxqT1ZwNmaDG1uST9jMMrlFj+hWUykXfE0e1aT0R0aopB88dlEox0O7mk665ODgrJMXikwrsPT0ltXBMUgRwy56xkhY Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1565:b0:3d4:2acc:81fa with SMTP id e9e14a558f8ab-3d8120f9dbamr15975235ab.2.1744755781841; Tue, 15 Apr 2025 15:23:01 -0700 (PDT) Date: Tue, 15 Apr 2025 15:23:01 -0700 In-Reply-To: <20250415174856.379736-1-duttaditya18@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67fedc45.050a0220.6a185.01e0.GAE@google.com> Subject: Re: [syzbot] [jfs?] UBSAN: array-index-out-of-bounds in add_missing_indices From: syzbot To: duttaditya18@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, syzkaller-lts-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: UBSAN: array-index-out-of-bounds in add_missing_indices ... Log Wrap ... Log Wrap ... Log Wrap ... ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:2946:28 index -128 is out of range for type 'struct dtslot[128]' CPU: 0 PID: 5101 Comm: syz.0.16 Not tainted 5.15.180-syzkaller-07499-gf7347f400572-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282 add_missing_indices+0x6d0/0xaac fs/jfs/jfs_dtree.c:2946 jfs_readdir+0x1974/0x31dc fs/jfs/jfs_dtree.c:3316 iterate_dir+0x1f4/0x4ec fs/readdir.c:-1 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ================================================================================ ================================================================== BUG: KASAN: slab-out-of-bounds in diWrite+0xb48/0x1604 fs/jfs/jfs_imap.c:753 Read of size 32 at addr ffffff80e16dc130 by task syz.0.16/5101 CPU: 1 PID: 5101 Comm: syz.0.16 Not tainted 5.15.180-syzkaller-07499-gf7347f400572-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x274/0x2b4 mm/kasan/generic.c:189 memcpy+0x90/0xe8 mm/kasan/shadow.c:65 diWrite+0xb48/0x1604 fs/jfs/jfs_imap.c:753 txCommit+0x748/0x5548 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices+0x74c/0xaac fs/jfs/jfs_dtree.c:2960 jfs_readdir+0x1974/0x31dc fs/jfs/jfs_dtree.c:3316 iterate_dir+0x1f4/0x4ec fs/readdir.c:-1 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffffff80e16dc0c0 which belongs to the cache jfs_ip of size 2240 The buggy address is located 112 bytes inside of 2240-byte region [ffffff80e16dc0c0, ffffff80e16dc980) The buggy address belongs to the page: page:0000000001ce143c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1216d8 head:0000000001ce143c order:3 compound_mapcount:0 compound_pincount:0 memcg:ffffff80e68fcb01 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffffff80c2b8ea80 raw: 0000000000000000 00000000800d000d 00000001ffffffff ffffff80e68fcb01 page dumped because: kasan: bad access detected Memory state around the buggy address: ffffff80e16dc000: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc ffffff80e16dc080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffffff80e16dc100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffffff80e16dc180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffffff80e16dc200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ... Log Wrap ... Log Wrap ... Log Wrap ... ... Log Wrap ... Log Wrap ... Log Wrap ... ... Log Wrap ... Log Wrap ... Log Wrap ... ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0 ERROR: (device loop0): remounting filesystem as read-only JFS: Invalid stbl[1] = -128 for inode 2, block = 0 Tested on: commit: f7347f40 Linux 5.15.180 git tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git linux-5.15.y console output: https://syzkaller.appspot.com/x/log.txt?x=163c0204580000 kernel config: https://syzkaller.appspot.com/x/.config?x=e433a356d25f60cb dashboard link: https://syzkaller.appspot.com/bug?extid=b974bd41515f770c608b compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 patch: https://syzkaller.appspot.com/x/patch.diff?x=135bfc04580000