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 8DEC3C4332F for ; Fri, 21 Oct 2022 10:51:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229660AbiJUKvB (ORCPT ); Fri, 21 Oct 2022 06:51:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53614 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229761AbiJUKuy (ORCPT ); Fri, 21 Oct 2022 06:50:54 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 07C042502BB for ; Fri, 21 Oct 2022 03:50:47 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id m9-20020a056e021c2900b002fadb905ddcso3233231ilh.18 for ; Fri, 21 Oct 2022 03:50:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=L7U1sqwK0qgiWwV3vBjnPUoEzYf+gnjLnDUe9Z5mNRg=; b=NBBERjswkgn/VBMjuM5v1+MZQ4SQ9kOhExMAINPEoIrSWTuFKdnWX2/wD05YLpErV+ orNs72WniNs0mzWQU6b55n/WxbR0Xj5o80j5pY/543QcBimKVTnAcpWC19LDMzaQ69pU pBl4MZzr+qTkP+kCcpIk/3UGcnGDcSg2R1gL+U/oOa+GcuA07ap15MT6udHVj92vRTrp jwmQ4+azlTW1nbiC652NU7i1sasHHrc90gynr8VS/3dUOmCbpVcpYkw2RG6Hbp+Gckln +3J5iBPzDa5WNZsPlspkq9uN8g7d6TbsaFD+EuF2p734btUqy7dNOLQu6ASG6OszCjsg jWNQ== X-Gm-Message-State: ACrzQf1XrfIcL0mQwPhp84ClM+Yef9Q00Q1ebwReOGX63X1vP1nNFO8Y GJAis2PWRp8+zbZHctqoBcyCXLtEF1tklhkUGFK32kEpn+pU X-Google-Smtp-Source: AMsMyM6p++tCZH4Ww1eD/ap+IaTSlmeXAMQzK31J3Ua7ZpfRswm6unslYn+/fF8eIKwCQbAskQX6tRyXAILy7FgyYq3dYZYLoq4+ MIME-Version: 1.0 X-Received: by 2002:a05:6638:24d1:b0:363:fa8f:1e2a with SMTP id y17-20020a05663824d100b00363fa8f1e2amr15258088jat.99.1666349445843; Fri, 21 Oct 2022 03:50:45 -0700 (PDT) Date: Fri, 21 Oct 2022 03:50:45 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000ca93e205eb893680@google.com> Subject: [syzbot] UBSAN: shift-out-of-bounds in dbFreeBits From: syzbot To: jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, mudongliangabcd@gmail.com, paskripkin@gmail.com, r33s3n6@gmail.com, shaggy@kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 4d48f589d294 Add linux-next specific files for 20221021 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=173129e2880000 kernel config: https://syzkaller.appspot.com/x/.config?x=2c4b7d600a5739a6 dashboard link: https://syzkaller.appspot.com/bug?extid=cf96cd135c5e00252e3b compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0c86bd0b39a0/disk-4d48f589.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/074059d37f1f/vmlinux-4d48f589.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+cf96cd135c5e00252e3b@syzkaller.appspotmail.com ================================================================================ UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:1681:12 shift exponent -256 is negative CPU: 0 PID: 26587 Comm: syz-executor.3 Not tainted 6.1.0-rc1-next-20221021-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 ubsan_epilogue+0xb/0x50 lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x187 lib/ubsan.c:322 dbFreeBits.cold-0x5/0x72 dbAllocAny+0xa4/0x1a0 fs/jfs/jfs_dmap.c:1512 dbAlloc+0x46d/0xa70 fs/jfs/jfs_dmap.c:869 extBalloc fs/jfs/jfs_extent.c:321 [inline] extAlloc+0x4e7/0xeb0 fs/jfs/jfs_extent.c:122 jfs_get_block+0x661/0xa90 fs/jfs/inode.c:248 __block_write_begin_int+0x3b9/0x14b0 fs/buffer.c:1991 __block_write_begin fs/buffer.c:2041 [inline] block_write_begin+0xb5/0x440 fs/buffer.c:2102 jfs_write_begin+0x2d/0xd0 fs/jfs/inode.c:304 generic_perform_write+0x252/0x570 mm/filemap.c:3771 __generic_file_write_iter+0x2aa/0x4d0 mm/filemap.c:3899 generic_file_write_iter+0xdf/0x350 mm/filemap.c:3931 call_write_iter include/linux/fs.h:2191 [inline] do_iter_readv_writev+0x20b/0x3b0 fs/read_write.c:735 do_iter_write+0x182/0x700 fs/read_write.c:861 vfs_writev+0x1aa/0x630 fs/read_write.c:934 do_pwritev+0x1b6/0x270 fs/read_write.c:1031 __do_sys_pwritev2 fs/read_write.c:1090 [inline] __se_sys_pwritev2 fs/read_write.c:1081 [inline] __x64_sys_pwritev2+0xeb/0x150 fs/read_write.c:1081 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa59e48b5a9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa59f693168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007fa59e5abf80 RCX: 00007fa59e48b5a9 RDX: 0000000000000002 RSI: 0000000020003380 RDI: 0000000000000003 RBP: 00007fa59e4e6580 R08: 0000000002000000 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccdcc3d2f R14: 00007fa59f693300 R15: 0000000000022000 ================================================================================ --- This report is generated by a bot. 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