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 CCE70C433EF for ; Tue, 17 May 2022 11:35:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344180AbiEQLfO (ORCPT ); Tue, 17 May 2022 07:35:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46176 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233028AbiEQLfL (ORCPT ); Tue, 17 May 2022 07:35:11 -0400 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A2C72717E for ; Tue, 17 May 2022 04:35:10 -0700 (PDT) Received: by mail-il1-f197.google.com with SMTP id l13-20020a056e0212ed00b002d07cd1db63so7642684iln.7 for ; Tue, 17 May 2022 04:35:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=FkY6wA5Kc8BpmjekXlBJGuJOJHx9rxAyEBHBHuyzTL8=; b=TTYrejGhWfE17IKyUjC8aAGCRW+ZYq6uq55HWxvWj4MXP1JzHL9NFNqRr16VrMADmY F5w3MPr3fkx7NJ0t0qm6PhP+2jxoRUxGcBCNv4kAIY37f158RRdZPd6t1/0PU1TvVeW2 OtHwCTxcd4G4EBuC8URK1kTFSO+3p6ipoCYJnEUhgSXaLbQU47bUKMDrGSpN+XF6MkuZ sUpSUXVVVd6ny7QLvVKNrAAeIwv7swJ8/lgq+ZmeR648ZHQ4XgegzMWSq4zQwHI9KIor raGmer0ABQWRef6HsWDNIDP5XgKJB4wVvjCmHO3W5KHAbfqI8ZKeMO1oVOALkEJOI5m6 H9XA== X-Gm-Message-State: AOAM533xbdXQx2CXgXgnfh0djeq19kRmbgj4Jt14M3t04RdCbRikaib1 T4uBlgoaF/OtZbopnXYnFNlllDcJZKEKpDT504V8cWtd6w/d X-Google-Smtp-Source: ABdhPJwF+dz8wsHIXhj0sW0JLk3zUAJ5JZRZtsYREEoA9W2MtmjkreDnLc6q0Znbbsg+YXutDzUJxeteHGEtyBU4S0QugRMpasrw MIME-Version: 1.0 X-Received: by 2002:a05:6638:b:b0:32e:3b8d:3e5d with SMTP id z11-20020a056638000b00b0032e3b8d3e5dmr4245685jao.91.1652787309767; Tue, 17 May 2022 04:35:09 -0700 (PDT) Date: Tue, 17 May 2022 04:35:09 -0700 In-Reply-To: <20220517111247.2103-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007cf04605df3388a8@google.com> Subject: Re: [syzbot] WARNING in mntput_no_expire (3) 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: WARNING in mntput_no_expire ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4042 at fs/namespace.c:1239 mntput_no_expire+0xb02/0xfe0 fs/namespace.c:1239 Modules linked in: CPU: 0 PID: 4042 Comm: syz-executor.2 Not tainted 5.18.0-rc6-syzkaller-00009-gfeb9c5e19e91-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mntput_no_expire+0xb02/0xfe0 fs/namespace.c:1239 Code: 00 48 c7 c7 c0 16 db 89 c6 05 33 c9 c8 0b 01 e8 c9 55 4d 07 e9 57 ff ff ff e8 2a bd 9d ff 0f 0b e9 df f9 ff ff e8 1e bd 9d ff <0f> 0b e9 d3 f9 ff ff e8 12 bd 9d ff e8 4d b7 88 ff 31 ff 89 c3 89 RSP: 0018:ffffc9000313fcf0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801ba15880 RSI: ffffffff81db8412 RDI: 0000000000000003 RBP: 0000000000000008 R08: 0000000000000000 R09: ffffffff9006e94f R10: ffffffff81db7dce R11: 0000000000000001 R12: ffffc9000313fd40 R13: ffff88801f6ea800 R14: 0000000000000002 R15: dffffc0000000000 FS: 000055555676b400(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff05411c78 CR3: 000000007a034000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: path_umount+0x7d4/0x1260 fs/namespace.c:1819 ksys_umount fs/namespace.c:1838 [inline] __do_sys_umount fs/namespace.c:1843 [inline] __se_sys_umount fs/namespace.c:1841 [inline] __x64_sys_umount+0x159/0x180 fs/namespace.c:1841 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+0x44/0xae RIP: 0033:0x7f67c148a557 Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 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:00007ffc7f7ec938 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f67c148a557 RDX: 00007ffc7f7eca0a RSI: 000000000000000a RDI: 00007ffc7f7eca00 RBP: 00007ffc7f7eca00 R08: 00000000ffffffff R09: 00007ffc7f7ec7d0 R10: 000055555676c8b3 R11: 0000000000000246 R12: 00007f67c14e21f8 R13: 00007ffc7f7edac0 R14: 000055555676c810 R15: 00007ffc7f7edb00 Tested on: commit: feb9c5e1 Merge tag 'for_linus' of git://git.kernel.org.. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ console output: https://syzkaller.appspot.com/x/log.txt?x=10df1295f00000 kernel config: https://syzkaller.appspot.com/x/.config?x=79caa0035f59d385 dashboard link: https://syzkaller.appspot.com/bug?extid=5b1e53987f858500ec00 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=16f621b9f00000