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 X-Spam-Level: X-Spam-Status: No, score=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C015C2D0CE for ; Tue, 21 Jan 2020 23:56:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4805920704 for ; Tue, 21 Jan 2020 23:56:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727847AbgAUX4J convert rfc822-to-8bit (ORCPT ); Tue, 21 Jan 2020 18:56:09 -0500 Received: from mail-il1-f199.google.com ([209.85.166.199]:44795 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725876AbgAUX4J (ORCPT ); Tue, 21 Jan 2020 18:56:09 -0500 Received: by mail-il1-f199.google.com with SMTP id h87so3429898ild.11 for ; Tue, 21 Jan 2020 15:56:08 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to :content-transfer-encoding; bh=FP19rMCZrA8aEYztsjM0/NcqndOiX+PGABvAiUHnfqc=; b=hAuZ6HzYytj83JBpQNb8biS7OrDiG72ARoWmobFg0jjM3+ykqjd4ZEw4O+Mv1yTeJk oDEUOgHKTubVGg2FC5tiOL0Uyz8+Sc9Nw/XUXvVXPeR2xltUPBBAsq68hYSDZscLONAl gcRtOvQ9kHhknj3Xjrsu9Bcqj1Wj2L70PUKBimijKMRwkOjFrx6fbX9TWPAtYfNpwYg0 ynyIBCWEq7SV32EPv1mgKflX/eMDLiMXk0/5wSp3JJRNMKzBjW19disAkJR8P6Bdu5xh +XsjjyQx5edaCjIZkyD0IDhweMWXauzQDh7E5yI+8h768W2wZ3gvwdTAagG3EM6FzvdA lXrA== X-Gm-Message-State: APjAAAVm68W1JHQxr20BFqiXxZYYhZqwEz9yi3Mm27Xh14li3hv4iiMF A66NXuoNa0l2y4rMR3vtV57YRUZmrGAImzHIMThTPXVgyyMi X-Google-Smtp-Source: APXvYqymwTKfclatTuAPFNQc//9Mq4Cfj0YLxr8Id5jOR9C12eseDN6UMCR/SfcMmBZfnlnza7ruT/x8kczjuGhPyumIcvUsEo6K MIME-Version: 1.0 X-Received: by 2002:a6b:731a:: with SMTP id e26mr4920571ioh.254.1579650968613; Tue, 21 Jan 2020 15:56:08 -0800 (PST) Date: Tue, 21 Jan 2020 15:56:08 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000da7a79059caf2656@google.com> Subject: WARNING in __proc_create (2) From: syzbot To: dhowells@redhat.com, linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: d96d875e Merge tag 'fixes_for_v5.5-rc8' of git://git.kerne.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13b7b80de00000 kernel config: https://syzkaller.appspot.com/x/.config?x=83c00afca9cf5153 dashboard link: https://syzkaller.appspot.com/bug?extid=b904ba7c947a37b4b291 compiler: clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12c96185e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14f859c9e00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+b904ba7c947a37b4b291@syzkaller.appspotmail.com ------------[ cut here ]------------ name '��/]uwo,"�c�ac�����[�$�5x~�s�&�tw}���z�cp(' WARNING: CPU: 0 PID: 3489 at fs/proc/generic.c:178 __xlate_proc_name fs/proc/generic.c:178 [inline] WARNING: CPU: 0 PID: 3489 at fs/proc/generic.c:178 xlate_proc_name fs/proc/generic.c:194 [inline] WARNING: CPU: 0 PID: 3489 at fs/proc/generic.c:178 __proc_create+0x25a/0xb60 fs/proc/generic.c:387 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3489 Comm: kworker/0:8 Not tainted 5.5.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: afs afs_manage_cell Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fb/0x318 lib/dump_stack.c:118 panic+0x264/0x7a9 kernel/panic.c:221 __warn+0x209/0x210 kernel/panic.c:582 report_bug+0x1b6/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0xda/0x440 arch/x86/kernel/traps.c:267 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:__xlate_proc_name fs/proc/generic.c:178 [inline] RIP: 0010:xlate_proc_name fs/proc/generic.c:194 [inline] RIP: 0010:__proc_create+0x25a/0xb60 fs/proc/generic.c:387 Code: 07 00 00 49 89 c6 e8 f5 48 94 ff e9 56 fe ff ff e8 eb 48 94 ff 48 8b 75 b8 45 31 ed 48 c7 c7 39 52 e1 88 31 c0 e8 36 55 66 ff <0f> 0b 48 c7 c7 88 43 11 89 e8 08 de 1a 06 e9 bc 00 00 00 e8 be 48 RSP: 0018:ffffc9000b617a90 EFLAGS: 00010246 RAX: d5e5b65e165c9c00 RBX: 0000000000000005 RCX: ffff88809bb3e140 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000b617b00 R08: ffffffff815f9d24 R09: fffffbfff13cd11e R10: fffffbfff13cd11e R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000 proc_mkdir_data+0x8b/0x150 fs/proc/generic.c:473 proc_net_mkdir include/linux/proc_fs.h:139 [inline] afs_proc_cell_setup+0x9d/0x150 fs/afs/proc.c:610 afs_activate_cell fs/afs/cell.c:591 [inline] afs_manage_cell+0x750/0x1500 fs/afs/cell.c:673 process_one_work+0x7f5/0x10d0 kernel/workqueue.c:2264 worker_thread+0xbbc/0x1630 kernel/workqueue.c:2410 kthread+0x332/0x350 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches