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 2925DEEAA53 for ; Thu, 14 Sep 2023 16:04:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241373AbjINQEx (ORCPT ); Thu, 14 Sep 2023 12:04:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51154 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241300AbjINQEw (ORCPT ); Thu, 14 Sep 2023 12:04:52 -0400 Received: from mail-oi1-f197.google.com (mail-oi1-f197.google.com [209.85.167.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5C9781BDD for ; Thu, 14 Sep 2023 09:04:48 -0700 (PDT) Received: by mail-oi1-f197.google.com with SMTP id 5614622812f47-3ab7fb11711so1561391b6e.2 for ; Thu, 14 Sep 2023 09:04:48 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694707487; x=1695312287; 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=ZNdUoJwIRehdPwgJQ6H5/eO4Vgm7GeU3hjbHHkOa5/E=; b=nBNQIgeGJi4JKQKBGF/Lgb7b1bdHq8XEuC9IAShRwNqmnQYr0AQlZ16wvLRCUVVSHS vZO5kf+rI0Qk1xUedQXz5ACG0KjayAuPhlGmcXDF9TQ7hBFGYl4qsIF8JRX7lFZZtBBh HGOwgMDZUr4qzKQv48ZBxecPz9dbQtXtoOZ0y+7ERVqmp6tiLABkzOodax/t46EcmsdQ 1s5bQqOAylPHsBYnTH7v2geW4uWA3L0PoFLPq3MrvwLos5+uU2RA692g2NJjIi6eFTxe ZVsyNEf4uZDSpGxddMq6efJQShj+UANeCcFbinN4UOPTZZzVwRHougWpPkoIdU12UItB igeg== X-Gm-Message-State: AOJu0Yzqd7sf4DGutMEYbAikYLV8KllFN5bCgkY6q5m97fm3PS1WfwCV h6JV0Iw1oswuhtNxJheRXJoN+jn0UMaIZys43tbgI5UbeHTc X-Google-Smtp-Source: AGHT+IEDQtk73BIjie3qKGhsS3SlJkwNzsTIbJrHEDur23i7MA6UdvEoFBJnJLDhca2eLJO0edH5ljH5HcFw7e3vZNXEd6fSoRHH MIME-Version: 1.0 X-Received: by 2002:a05:6808:1893:b0:3a8:4895:63e1 with SMTP id bi19-20020a056808189300b003a8489563e1mr2724583oib.5.1694707487793; Thu, 14 Sep 2023 09:04:47 -0700 (PDT) Date: Thu, 14 Sep 2023 09:04:47 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cee844060553d536@google.com> Subject: Re: [syzbot] [io-uring?] UBSAN: array-index-out-of-bounds in io_setup_async_msg From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: UBSAN: array-index-out-of-bounds in io_setup_async_msg ================================================================================ UBSAN: array-index-out-of-bounds in io_uring/net.c:189:55 index 3779565697114 is out of range for type 'iovec [8]' CPU: 1 PID: 5467 Comm: syz-executor.0 Not tainted 6.6.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0x111/0x150 lib/ubsan.c:348 io_setup_async_msg+0x2a0/0x2b0 io_uring/net.c:189 io_recvmsg+0x169f/0x2170 io_uring/net.c:781 io_issue_sqe+0x54a/0xd80 io_uring/io_uring.c:1878 io_queue_sqe io_uring/io_uring.c:2063 [inline] io_submit_sqe io_uring/io_uring.c:2323 [inline] io_submit_sqes+0x96c/0x1ed0 io_uring/io_uring.c:2438 __do_sys_io_uring_enter+0x14ea/0x2650 io_uring/io_uring.c:3647 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f9a8a27cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007f9a8af210c8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 00007f9a8a39bf80 RCX: 00007f9a8a27cae9 RDX: 0000000000000000 RSI: 0000000000007689 RDI: 0000000000000003 RBP: 00007f9a8a2c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9a8a39bf80 R15: 00007ffd083c1e58 ================================================================================ Tested on: commit: 0bb80ecc Linux 6.6-rc1 git tree: https://github.com/isilence/linux.git syz-test/netmsg-init-base console output: https://syzkaller.appspot.com/x/log.txt?x=15ccbf30680000 kernel config: https://syzkaller.appspot.com/x/.config?x=f4894cf58531f dashboard link: https://syzkaller.appspot.com/bug?extid=a4c6e5ef999b68b26ed1 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.