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 9D903C54EBD for ; Thu, 12 Jan 2023 10:27:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239686AbjALK1X (ORCPT ); Thu, 12 Jan 2023 05:27:23 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56670 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231438AbjALKZt (ORCPT ); Thu, 12 Jan 2023 05:25:49 -0500 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6819392C7 for ; Thu, 12 Jan 2023 02:20:41 -0800 (PST) Received: by mail-io1-f70.google.com with SMTP id s26-20020a5e981a000000b007045ace9e1cso4694619ioj.5 for ; Thu, 12 Jan 2023 02:20:41 -0800 (PST) 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=H4hi1RohH9BsccreIKVvgBIcVAblFjWKdFjZtUvK4oU=; b=h4WdLTYDUDF/8OP+JtfmKcZApmgAGYtCT6lbliH6F8ep+qumr3sjVCyLCVJRQBhN/c 131f2ld2XPir2o1ghcmhg4fY2yo4wu2ij6vtMEzBbYFkSHebaitVgmIVaS7OvFW5pm6i oZfom6NFKfUKzuWSsFemSvHmgsdZ+pu8sRC31IreHpJpEtCYTO1OJhOD5sNqyOAC13h1 XP5TNvC73W2ib32Ys22lBzMafrGbZANyIAVEa4uJcADaPgBE/e+nOhuS3E96pYNGgEox YxMVD/S3ujYn6+RR73BPnZQKwHcFvEi7Tq1N437hLPqAdaNKlgfK3eCELiGKbGeGs709 ydUA== X-Gm-Message-State: AFqh2kq5BJf6Lq/v+FYtiuvk2n//e9coQdL7Jj+b5Y/HSisQ4akDG87H SSS31eTnwl+nf6dGcJ3t3GXDa+Vd+RyNA1kzdd6kNX1vB+ae X-Google-Smtp-Source: AMrXdXunS+welfar0PF3Q1cTbRJuR0u/n9Vu3yO+PZtoooR9BK02warcPxuX3el3BH9kgKjJLuaGKJWtYjrD/8FaL8A5FjTakv7X MIME-Version: 1.0 X-Received: by 2002:a5d:8043:0:b0:6e0:bdd:6c9e with SMTP id b3-20020a5d8043000000b006e00bdd6c9emr6360591ior.79.1673518841325; Thu, 12 Jan 2023 02:20:41 -0800 (PST) Date: Thu, 12 Jan 2023 02:20:41 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000ff09e05f20e783e@google.com> Subject: [syzbot] WARNING in __put_task_struct (3) From: syzbot To: linux-kernel@vger.kernel.org, luto@kernel.org, peterz@infradead.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de 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: 0a093b2893c7 Add linux-next specific files for 20230112 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=106064a6480000 kernel config: https://syzkaller.appspot.com/x/.config?x=835f3591019836d5 dashboard link: https://syzkaller.appspot.com/bug?extid=394b8403503a77a4aa45 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/8111a570d6cb/disk-0a093b28.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ecc135b7fc9a/vmlinux-0a093b28.xz kernel image: https://storage.googleapis.com/syzbot-assets/ca8d73b446ea/bzImage-0a093b28.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+394b8403503a77a4aa45@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 19865 at kernel/fork.c:845 __put_task_struct+0x330/0x3d0 kernel/fork.c:845 Modules linked in: CPU: 0 PID: 19865 Comm: syz-executor.5 Not tainted 6.2.0-rc3-next-20230112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__put_task_struct+0x330/0x3d0 kernel/fork.c:845 Code: 0e 4c 89 e6 e8 f1 3a 85 00 e9 22 ff ff ff e8 c7 aa 37 00 be 03 00 00 00 4c 89 e7 e8 fa 91 bf 02 e9 0b ff ff ff e8 b0 aa 37 00 <0f> 0b e9 1a fd ff ff e8 a4 aa 37 00 0f 0b e9 62 fd ff ff e8 98 aa RSP: 0018:ffffc900075a78e8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880365dba80 RSI: ffffffff814a1230 RDI: 0000000000000005 RBP: ffff8880365dba80 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880365dbaa8 R13: ffff88807f931000 R14: ffff888144b0d150 R15: ffff888144b0d148 FS: 00007f87872b0700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5a71bde000 CR3: 000000002b805000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: put_task_struct include/linux/sched/task.h:119 [inline] io_wq_exit_workers io_uring/io-wq.c:1266 [inline] io_wq_put_and_exit+0xb47/0xd80 io_uring/io-wq.c:1294 io_uring_clean_tctx+0x117/0x178 io_uring/tctx.c:193 io_uring_cancel_generic+0x5ae/0x606 io_uring/io_uring.c:3229 io_uring_files_cancel include/linux/io_uring.h:55 [inline] do_exit+0x522/0x2a90 kernel/exit.c:822 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012 get_signal+0x225f/0x24f0 kernel/signal.c:2859 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306 exit_to_user_mode_loop kernel/entry/common.c:168 [inline] exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline] syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297 do_syscall_64+0x46/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f878648c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f87872b0218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f87865abf88 RCX: 00007f878648c0c9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f87865abf88 RBP: 00007f87865abf80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f87865abf8c R13: 00007ffdd18e481f R14: 00007f87872b0300 R15: 0000000000022000 --- This report is generated by a bot. 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