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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 0DFB5C4363C for ; Fri, 2 Oct 2020 15:38:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C2BD22074B for ; Fri, 2 Oct 2020 15:38:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387938AbgJBPil (ORCPT ); Fri, 2 Oct 2020 11:38:41 -0400 Received: from mail-il1-f208.google.com ([209.85.166.208]:36291 "EHLO mail-il1-f208.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726569AbgJBPiT (ORCPT ); Fri, 2 Oct 2020 11:38:19 -0400 Received: by mail-il1-f208.google.com with SMTP id q11so1444144ilt.3 for ; Fri, 02 Oct 2020 08:38:19 -0700 (PDT) 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; bh=PE5cBLSWtFQkLHdR6wGzlq+rKO5hHx9Bm3+Pczm/w3M=; b=jtEjaffH/WxeaNcnTWm5NH/4MvrWIdYd7TIbe6AoZWeEn1EgLcMEDqKouWjjqTck6Z vQ7Z8pCwe6wXVny3hs7rSRWsdRdpUJU9y0z8k5oMiYTz5ZcQwH/ytMQ9oWsXkEGOdwlr USSRxM4fwVEK4Mgsp3yPECueMQRstVAVqzLe4dsV6dfeqxsyCdJ34pMUrW0NBRwJT4pI VK+aUzx5TCInGQDG8PuB1RP2yL7pw2xdnB5BMlwuMdXJcApPFEM6s64Fh0ydCMV4ZT3X vuZPME0B5LOyl7VRIV9Pw83HEwKn0gdp2BFVLDGw6sphk0PBzFHv9nIeqMeVMxeTyrWV TE7Q== X-Gm-Message-State: AOAM5306TScfVLHArvjusRGah3iMBQStdAHl0qd3jnJ0zuk/cftXu4rY gPM0iUMsFv4NkzvEQaDWC89a2ClINcvRlGgA1ejekXS4R5m+ X-Google-Smtp-Source: ABdhPJzfnKMduYiT0ZQ8SenI2VNULXq37MlUlg779YihyNkxKSLdyFyv8J1RzNk28gsqjwGpG5S8RtnOGVBTTOcnwbfGJFPXzMCj MIME-Version: 1.0 X-Received: by 2002:a5e:9319:: with SMTP id k25mr2429079iom.153.1601653098822; Fri, 02 Oct 2020 08:38:18 -0700 (PDT) Date: Fri, 02 Oct 2020 08:38:18 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000002468205b0b1ece8@google.com> Subject: WARNING in kvfree From: syzbot To: bfields@fieldses.org, chuck.lever@oracle.com, linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 60e72093 Merge tag 'clk-fixes-for-linus' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=169943a7900000 kernel config: https://syzkaller.appspot.com/x/.config?x=89ab6a0c48f30b49 dashboard link: https://syzkaller.appspot.com/bug?extid=e8b76e1215d7b7214060 compiler: gcc (GCC) 10.1.0-syz 20200507 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e8b76e1215d7b7214060@syzkaller.appspotmail.com ------------[ cut here ]------------ virt_to_cache: Object is not a Slab page! WARNING: CPU: 1 PID: 1161 at mm/slab.h:420 virt_to_cache mm/slab.h:420 [inline] WARNING: CPU: 1 PID: 1161 at mm/slab.h:420 kfree+0x29b/0x2b0 mm/slab.c:3752 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 1161 Comm: kworker/u4:9 Not tainted 5.9.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 panic+0x382/0x7fb kernel/panic.c:231 __warn.cold+0x20/0x4b kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:virt_to_cache mm/slab.h:420 [inline] RIP: 0010:kfree+0x29b/0x2b0 mm/slab.c:3752 Code: 05 91 b6 9d 09 01 e8 29 bf a5 ff e9 7a ff ff ff 48 c7 c6 80 70 96 88 48 c7 c7 70 c9 b2 89 c6 05 25 db 9d 09 01 e8 67 dd 8f ff <0f> 0b e9 bf fe ff ff 0f 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 41 RSP: 0018:ffffc90016137b50 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000286 RCX: 0000000000000000 RDX: ffff888061194000 RSI: ffffffff815f59d5 RDI: fffff52002c26f5c RBP: ffff888000400000 R08: 0000000000000001 R09: ffff8880ae520f8b R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000200 R13: 000000000002bfa8 R14: ffff888000400000 R15: 0000000000000800 kvfree+0x42/0x50 mm/util.c:603 nfsd_reply_cache_shutdown+0x1a3/0x2c0 fs/nfsd/nfscache.c:214 nfsd_exit_net+0x15f/0x490 fs/nfsd/nfsctl.c:1507 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:186 cleanup_net+0x4ea/0xa00 net/core/net_namespace.c:603 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This report is generated by a bot. 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