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 AFA5CC4332F for ; Sat, 10 Dec 2022 18:36:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229723AbiLJSg3 (ORCPT ); Sat, 10 Dec 2022 13:36:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50624 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229475AbiLJSg0 (ORCPT ); Sat, 10 Dec 2022 13:36:26 -0500 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5BE241743F for ; Sat, 10 Dec 2022 10:36:25 -0800 (PST) Received: by mail-il1-f200.google.com with SMTP id a14-20020a921a0e000000b00302a8ffa8e5so2139566ila.2 for ; Sat, 10 Dec 2022 10:36:25 -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:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=3I7M+zjFtQ50bvRzU4GXip2hYCfwlR1Hc33yDWfG0Pw=; b=OqGOVk5IzBNIfenn7NI9rSEVUFlLVgE7qv5xBQOgNsjlLZGFvSaM7XD62xCYgO0xKe EMUxATl78u/+K+bis0Ga28JXSyD0w8rbSIIbR4VKMGe5JmqkQlJwEtUpQoQVngasCpfR l0lZpLPnJlkmcjXh3j88sNe1b01pAJb5U3SA7PqjAtfIXSnNQpbAy0WR8+id98Icvbfp wS4/938eKnkisbOuXiE7t9+3g3YHtpuJ7BKmmfq/NWg5VpvH4OYiXjGAFffwcC5AMH3p L8L6j4WCKKKqDIBx1EB2MYLVxRSC6Y7lQQYJt9r/MTnasqtQXqLmqK3SLn2JrHl897qx XtEg== X-Gm-Message-State: ANoB5pm5cvRM9Xc60oD+3TLTGRQVtKA3oDLVX1klCAh6mv7GKp5//kXv go9on2t4lIFiKjZLNR2+cO4xwfpvNl/cBuYfb3bem5FFrGfl X-Google-Smtp-Source: AA0mqf5a5F5zLjCbmzDQ7rHYGV9VaJAtM8nIMvxiosn6XlwVoQpGzogjbVheZsbfylB92foA3DwnCPCWTvEWMoNRNA8eB1Wdgxh6 MIME-Version: 1.0 X-Received: by 2002:a92:c109:0:b0:303:93da:adeb with SMTP id p9-20020a92c109000000b0030393daadebmr839024ile.46.1670697384647; Sat, 10 Dec 2022 10:36:24 -0800 (PST) Date: Sat, 10 Dec 2022 10:36:24 -0800 In-Reply-To: <20221210130803.2147-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000023a37e05ef7d8c93@google.com> Subject: Re: [syzbot] kernel stack overflow in sock_close From: syzbot To: hdanton@sina.com, linux-kernel@vger.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 has tested the proposed patch but the reproducer is still triggering an issue: kernel stack overflow in sock_close x8 : 0000000000040578 x7 : ffff80000b22f58c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000002 x1 : ffff0000c900a478 x0 : ffff0000c9009a40 Kernel panic - not syncing: kernel stack overflow CPU: 0 PID: 3647 Comm: syz-executor.0 Not tainted 6.1.0-rc7-syzkaller-00151-ge3cb714fb489-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:156 show_stack+0x2c/0x54 arch/arm64/kernel/stacktrace.c:163 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x104/0x16c lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 panic+0x218/0x508 kernel/panic.c:274 nmi_panic+0xbc/0xf0 kernel/panic.c:169 panic_bad_stack+0x134/0x154 arch/arm64/kernel/traps.c:886 handle_bad_stack+0x34/0x48 arch/arm64/kernel/entry-common.c:849 __bad_stack+0x78/0x7c arch/arm64/kernel/entry.S:552 mark_lock+0x4/0x1b4 kernel/locking/lockdep.c:4595 lock_acquire+0x100/0x1f8 kernel/locking/lockdep.c:5668 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x54/0x6c kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:355 [inline] lock_sock_nested+0x88/0xd8 net/core/sock.c:3450 lock_sock include/net/sock.h:1721 [inline] sock_map_close+0x30/0x4bc net/core/sock_map.c:1610 sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc sock_map_close+0x400/0x4bc inet_release+0xc8/0xe4 net/ipv4/af_inet.c:428 inet6_release+0x3c/0x58 net/ipv6/af_inet6.c:488 __sock_release net/socket.c:650 [inline] sock_close+0x50/0xf0 net/socket.c:1365 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0x2dc/0xcac kernel/exit.c:820 do_group_exit+0x98/0xcc kernel/exit.c:950 get_signal+0xabc/0xb2c kernel/signal.c:2858 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1076 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1129 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 SMP: stopping secondary CPUs Kernel Offset: disabled CPU features: 0x00000,040e0108,4c017203 Memory Limit: none Tested on: commit: e3cb714f Merge branch 'for-next/core' into for-kernelci git tree: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=14acf0cd880000 kernel config: https://syzkaller.appspot.com/x/.config?x=ec7118319bfb771e dashboard link: https://syzkaller.appspot.com/bug?extid=09329bd987ebca21bced compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 patch: https://syzkaller.appspot.com/x/patch.diff?x=11916513880000