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[2620:137:e000::1:20]) by mx.google.com with ESMTP id oz31-20020a1709077d9f00b0072b237785d3si10938875ejc.114.2022.07.24.06.44.56; Sun, 24 Jul 2022 06:45:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=appspotmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231475AbiGXNRT (ORCPT + 99 others); Sun, 24 Jul 2022 09:17:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229462AbiGXNRS (ORCPT ); Sun, 24 Jul 2022 09:17:18 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 85259E0E5 for ; Sun, 24 Jul 2022 06:17:17 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id i8-20020a056e020d8800b002d931252904so5741874ilj.23 for ; Sun, 24 Jul 2022 06:17:17 -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=hjEUNMgdvQs7+SQfFq8IM6gLNyCL0JlcuMD7/mHIX5A=; b=yBG9xaBmIQA8z3aHagprBkOpFRKP42Myx6POOPQASLCOyLK4PWHRmjWqTlJTgZ0lvD OZlgCtXg1LtkdBU/43mX7SqFm/Uz7BjjTgf/S4UYza79/I+6DYNf2n5N/JSYjQ6olCRV m6ioyScbRoeZma8WefuXA/eBKLNQOelY/rYqX+hxAfB7P1lfY6U0UrOpqYo5wM314DdZ cEK5KGsgpTDPLFef2c218QEeWgkGXfNvylxdgoYZfSCX8os356/y/F+WvIuFVm2lbcMO raB7RA7UUCcWw26h5f+4rOZ5XHS9OFfwpkXcaXez6EhRwTM8U8SjkEzO43I9t4jgptVI SKEw== X-Gm-Message-State: AJIora9/qgFzVHQnUzSg7KR5I6fxYSgLLwNi64zpnXf+VZbAdP+eG12m otYOItmITG18J/Ik+gawiOzJNrMXEdpJXEnDvNHFsLQkxwMO MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c45:b0:2dc:dc24:c103 with SMTP id d5-20020a056e021c4500b002dcdc24c103mr3199320ilg.132.1658668636866; Sun, 24 Jul 2022 06:17:16 -0700 (PDT) Date: Sun, 24 Jul 2022 06:17:16 -0700 In-Reply-To: <00000000000011f0c905d9097a62@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e6917605e48ce2bf@google.com> Subject: Re: [syzbot] WARNING in p9_client_destroy From: syzbot To: akpm@linux-foundation.org, asmadeus@codewreck.org, davem@davemloft.net, edumazet@google.com, elver@google.com, ericvh@gmail.com, hdanton@sina.com, k.kahurani@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux_oss@crudebyte.com, lucho@ionkov.net, netdev@vger.kernel.org, pabeni@redhat.com, rientjes@google.com, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org, v9fs-developer@lists.sourceforge.net, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=0.9 required=5.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SORTED_RECIPS,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 7302e91f39a81a9c2efcf4bc5749d18128366945 Author: Marco Elver Date: Fri Jan 14 22:03:58 2022 +0000 mm/slab_common: use WARN() if cache still has objects on destroy bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=142882ce080000 start commit: cb71b93c2dc3 Add linux-next specific files for 20220628 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=162882ce080000 console output: https://syzkaller.appspot.com/x/log.txt?x=122882ce080000 kernel config: https://syzkaller.appspot.com/x/.config?x=badbc1adb2d582eb dashboard link: https://syzkaller.appspot.com/bug?extid=5e28cdb7ebd0f2389ca4 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156f74ee080000 Reported-by: syzbot+5e28cdb7ebd0f2389ca4@syzkaller.appspotmail.com Fixes: 7302e91f39a8 ("mm/slab_common: use WARN() if cache still has objects on destroy") For information about bisection process see: https://goo.gl/tpsmEJ#bisection