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 3701DC433F5 for ; Mon, 14 Mar 2022 08:46:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237180AbiCNIr3 (ORCPT ); Mon, 14 Mar 2022 04:47:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229613AbiCNIr1 (ORCPT ); Mon, 14 Mar 2022 04:47:27 -0400 Received: from mail-io1-f70.google.com (mail-io1-f70.google.com [209.85.166.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 61BB23A5F8 for ; Mon, 14 Mar 2022 01:46:18 -0700 (PDT) Received: by mail-io1-f70.google.com with SMTP id y3-20020a056602178300b00645d25c30c1so11802102iox.6 for ; Mon, 14 Mar 2022 01:46:18 -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:message-id:subject:from:to; bh=iDERiaxOeM52K2KOtaDNsxpyia3UF8paSxXwnZxS/hk=; b=CXCsm8Ngmagbae4TNWhfrATcLpTh0rS2fMOTSTlzeYSWvnqgc2iKTxEncnKupYJ1Up h2FFOmr/oii2nNXoo9NjAMqmf45a+1bD+jRgHQqw9v8bCAjwaKdXQy6S3EBggb28L5Q+ f0ZaKYRjZmaCl5Nw3ER2RUEeKQYhW1vEInDDTtFYoR/RZg95qR2ekqn9vKZ7aymffDa/ WXU6N0kOixu3wU/pjONmlDk6PYQ+TYBELCQaSn/s+miQVbtfm8RxhOnQprHBgg1Ut18s PBn2hj+FGH0qHqmgGQzoAlL8NVTYmaZN0i8MdqCWx6MZcH5CzWpojeeOvxRdPJ+RxZsT 5jkQ== X-Gm-Message-State: AOAM5323w87hV7yHuNIF7FJ52iQeIkGVmRjucGoZmLV/5hqMyh1v8HTE UXfgs4ZKCgObPTX9LzPZ8h1QQ/EpgW3kkOzt+TsnkY0fQPnL X-Google-Smtp-Source: ABdhPJylKLuaVwo+1DCS35SUR4T4Ev9NJOnv8dUEnUY9HmDSzvz9EHVijKk7r0ecyfXjqdGagYF7kRl7cHrua+Vzw2NNVVBZ//6Q MIME-Version: 1.0 X-Received: by 2002:a05:6638:2686:b0:319:acb4:46e6 with SMTP id o6-20020a056638268600b00319acb446e6mr19121883jat.231.1647247577807; Mon, 14 Mar 2022 01:46:17 -0700 (PDT) Date: Mon, 14 Mar 2022 01:46:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bb7f1c05da29b601@google.com> Subject: [syzbot] general protection fault in __device_attach From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, rafael@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 found the following issue on: HEAD commit: e7e19defa575 Merge tag 'arm64-fixes' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13ea76f6700000 kernel config: https://syzkaller.appspot.com/x/.config?x=442f8ac61e60a75e dashboard link: https://syzkaller.appspot.com/bug?extid=dd3c97de244683533381 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 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+dd3c97de244683533381@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] CPU: 1 PID: 14569 Comm: syz-executor.4 Not tainted 5.17.0-rc7-syzkaller-00068-ge7e19defa575 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__device_attach+0xad/0x4a0 drivers/base/dd.c:949 Code: e8 03 42 80 3c 20 00 0f 85 a3 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 48 49 8d bc 24 08 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 6e 03 00 00 45 0f b6 b4 24 08 01 00 RSP: 0018:ffffc90010a87b98 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 1ffff92002150f74 RCX: 0000000000000000 RDX: 0000000000000021 RSI: 0000000000000008 RDI: 0000000000000108 RBP: ffff88807829d030 R08: 0000000000000000 R09: ffffc90010a87ad7 R10: fffff52002150f5a R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 00000000fffffff0 R15: ffff88807829d140 FS: 00007f7048b3e700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f704a2dd090 CR3: 0000000074ae3000 CR4: 0000000000350ee0 Call Trace: proc_ioctl.part.0+0x48e/0x560 drivers/usb/core/devio.c:2340 proc_ioctl drivers/usb/core/devio.c:170 [inline] proc_ioctl_compat drivers/usb/core/devio.c:2389 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2705 [inline] usbdev_ioctl+0xc01/0x36c0 drivers/usb/core/devio.c:2791 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl fs/ioctl.c:860 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860 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: 0033:0x7f704a1c9049 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f7048b3e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f704a2dbf60 RCX: 00007f704a1c9049 RDX: 0000000020000000 RSI: 00000000c00c5512 RDI: 0000000000000003 RBP: 00007f704a22308d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc683ba24f R14: 00007f7048b3e300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__device_attach+0xad/0x4a0 drivers/base/dd.c:949 Code: e8 03 42 80 3c 20 00 0f 85 a3 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 65 48 49 8d bc 24 08 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 6e 03 00 00 45 0f b6 b4 24 08 01 00 RSP: 0018:ffffc90010a87b98 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 1ffff92002150f74 RCX: 0000000000000000 RDX: 0000000000000021 RSI: 0000000000000008 RDI: 0000000000000108 RBP: ffff88807829d030 R08: 0000000000000000 R09: ffffc90010a87ad7 R10: fffff52002150f5a R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 00000000fffffff0 R15: ffff88807829d140 FS: 00007f7048b3e700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0b074ee1b8 CR3: 0000000074ae3000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: e8 03 42 80 3c callq 0x3c804208 5: 20 00 and %al,(%rax) 7: 0f 85 a3 03 00 00 jne 0x3b0 d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 14: fc ff df 17: 4c 8b 65 48 mov 0x48(%rbp),%r12 1b: 49 8d bc 24 08 01 00 lea 0x108(%r12),%rdi 22: 00 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 74 06 je 0x38 32: 0f 8e 6e 03 00 00 jle 0x3a6 38: 45 rex.RB 39: 0f .byte 0xf 3a: b6 b4 mov $0xb4,%dh 3c: 24 08 and $0x8,%al 3e: 01 00 add %eax,(%rax) --- This report is generated by a bot. 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