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 DE68AC433FE for ; Tue, 22 Nov 2022 15:36:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233729AbiKVPgR (ORCPT ); Tue, 22 Nov 2022 10:36:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43630 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233784AbiKVPgC (ORCPT ); Tue, 22 Nov 2022 10:36:02 -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 C3C916F359 for ; Tue, 22 Nov 2022 07:35:43 -0800 (PST) Received: by mail-il1-f200.google.com with SMTP id 13-20020a056e0216cd00b003023e8b7d03so10813097ilx.7 for ; Tue, 22 Nov 2022 07:35:43 -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:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=FybAGmp4BbsPjSoEeGjsL2UWXFm29CqL7tXapCANqIc=; b=dosQdRnSNbv8Puqkc5WEbZeNRL7p9jfDjiwtEKZnC77q6c4vkNudMafDEld6EIvqhD JG5ZDSCuP32G8Dvd2okhuEkiwBwaZDsq4uy14TrH6SHpw4Gh5/52XZBRmiFkIh8JRlsg qc26J4Pql8Hc25mB4z2ImX0dUHz3eyJPZ8NI+HrOjU3NklLokGw98vw6nCpA93C0XPWj m1Ls+vQqOHvrMD/Okop3K71pYTxp1FPSGW4O8WcHe9pgxWs1RIYvJ3C6g1B7WJ8yWrmc h0IGmVXR3/ctszNXjcvYvAghVXto/ikUUzROjqJa8zY5h0P7yc/v9WLwK5kpBzBIVGNT GLfQ== X-Gm-Message-State: ANoB5pnY1/yeigY8Lu6vueZkb+f8s62g6cBAGBQh8q7JS4HKYuAN6nLI 8CvLGf7tDs2yyj8iZvZEjhv7kfbu4e643E93k9YzmRVTGumo X-Google-Smtp-Source: AA0mqf5g7k/nFJPRGTnZdfeeydh62nJVXo1KeUOY4LE5TL48czuCU3II59FpuD8+o24q7J6r7iFr+EoA3rSuYkEnEjXJw9BuTqpf MIME-Version: 1.0 X-Received: by 2002:a5e:a604:0:b0:6de:353:ab43 with SMTP id q4-20020a5ea604000000b006de0353ab43mr2182230ioi.40.1669131343153; Tue, 22 Nov 2022 07:35:43 -0800 (PST) Date: Tue, 22 Nov 2022 07:35:43 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000cad14205ee10ec87@google.com> Subject: [syzbot] BUG: unable to handle kernel paging request in p9_client_disconnect From: syzbot To: asmadeus@codewreck.org, davem@davemloft.net, edumazet@google.com, ericvh@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux_oss@crudebyte.com, lucho@ionkov.net, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, v9fs-developer@lists.sourceforge.net Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: a77d28d13789 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=113a41f9880000 kernel config: https://syzkaller.appspot.com/x/.config?x=c4c990190d758078 dashboard link: https://syzkaller.appspot.com/bug?extid=ea8b28e8dca42fc3bcbe 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 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/7c4b04ddbeb3/disk-a77d28d1.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/3ecedb0cf6ca/vmlinux-a77d28d1.xz kernel image: https://storage.googleapis.com/syzbot-assets/44c59c4393c7/Image-a77d28d1.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ea8b28e8dca42fc3bcbe@syzkaller.appspotmail.com Unable to handle kernel paging request at virtual address 0032503900080052 Mem abort info: ESR = 0x0000000096000044 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000044 CM = 0, WnR = 1 [0032503900080052] address between user and kernel address ranges Internal error: Oops: 0000000096000044 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 3127 Comm: syz-executor.1 Not tainted 6.1.0-rc6-syzkaller-32651-ga77d28d13789 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : p9_client_disconnect+0x1c/0x30 net/9p/client.c:1067 lr : p9_client_disconnect+0x18/0x30 net/9p/client.c:1065 sp : ffff800013c43ca0 x29: ffff800013c43ca0 x28: ffff0000f2cc8000 x27: 0000000000000000 x26: 00000000000000c0 x25: 0000000000000002 x24: ffff80000d3ad050 x23: ffff80000d3a9000 x22: 0000000000000000 x21: 0000000000000000 x20: ffff000105870300 x19: 3032503900080002 x18: 0000000000000369 x17: 53006964623d4d45 x16: ffff80000dc18158 x15: ffff0000f2cc8000 x14: 0000000000000008 x13: 00000000ffffffff x12: ffff0000f2cc8000 x11: ff8080000be9c0e0 x10: 0000000000000000 x9 : ffff80000be9c0e0 x8 : 0000000000000002 x7 : ffff80000c058c98 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0000f2cc8000 x1 : ffff80000cede3e6 x0 : 3032503900080002 Call trace: p9_client_disconnect+0x1c/0x30 v9fs_session_cancel+0x20/0x30 fs/9p/v9fs.c:530 v9fs_kill_super+0x2c/0x50 fs/9p/vfs_super.c:225 deactivate_locked_super+0x70/0xe8 fs/super.c:332 deactivate_super+0xd0/0xd4 fs/super.c:363 cleanup_mnt+0x184/0x1c0 fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x100/0x148 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1127 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 Code: 910003fd aa0003f3 9710261f 52800048 (b9005268) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 910003fd mov x29, sp 4: aa0003f3 mov x19, x0 8: 9710261f bl 0xfffffffffc409884 c: 52800048 mov w8, #0x2 // #2 * 10: b9005268 str w8, [x19, #80] <-- trapping instruction --- This report is generated by a bot. 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