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 3E8E3C61D9C for ; Wed, 22 Nov 2023 09:52:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235121AbjKVJwl (ORCPT ); Wed, 22 Nov 2023 04:52:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235118AbjKVJwY (ORCPT ); Wed, 22 Nov 2023 04:52:24 -0500 Received: from mail-pj1-f77.google.com (mail-pj1-f77.google.com [209.85.216.77]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 561AB10D5 for ; Wed, 22 Nov 2023 01:51:19 -0800 (PST) Received: by mail-pj1-f77.google.com with SMTP id 98e67ed59e1d1-27ffe79ec25so6939070a91.2 for ; Wed, 22 Nov 2023 01:51:19 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1700646679; x=1701251479; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=l66RaqguqD/3B4IkgcVy1WBTBB1XpO/eN3kYlTYABtM=; b=w0YtekyzkxXPNtXZcIaNhxl7naha+vwmRNShLYs1x05LJYEpR0l7UsSMshou8G8f6U WeEUDjzVE8dWyuv5WOwqrIyPx2oo2aQcRXxyx5Yl4GE4u/yChkMdkhzfkxb70ghOvgoZ oZknBlFKYFDOaMOSh8AZT83zUYKWJgPJWWDezv5gPZC8ZaqN1r6G794RqYEZH8fdeNfK k8eD6qKZq/TNHUmlM+AjW/rO3Te0WkHWjV3j3gyAAX6qmXekmoBxrJTx6k0jGQXCshrR JHZAEaEST4KIl4Zjv0tFmfafbEhM/f0bqiv/rDLlZg72FbjOhV0KIfcV/MxutEuD90Jh 2f5A== X-Gm-Message-State: AOJu0YyKvQukndwXMEetBWgJ6b1fBP9yq0iZXgwCvIbYOmU/TD0IAWXM ri3KebgNeuv+uthE2Gw9jq8PBSL426kMlvFhNOI1zQVCi9e+ X-Google-Smtp-Source: AGHT+IENrij5vb6CyXb+xAa2zLjnSn9Iq0CiTRNBQxD6T4Hm2RR/e5gzykK6A3vl7vdVttb3v0/LwN7IL1eZg9PG1TP2kBrMpGbv MIME-Version: 1.0 X-Received: by 2002:a17:90a:2e88:b0:283:9965:e8c9 with SMTP id r8-20020a17090a2e8800b002839965e8c9mr420095pjd.9.1700646678798; Wed, 22 Nov 2023 01:51:18 -0800 (PST) Date: Wed, 22 Nov 2023 01:51:18 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002daad2060abaa9da@google.com> Subject: [syzbot] [kernel?] general protection fault in joydev_connect 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: 0468be89b3fa Merge tag 'iommu-updates-v6.6' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=15d71367a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=39744401c57166fc dashboard link: https://syzkaller.appspot.com/bug?extid=786b124fe4ce4dc99357 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-0468be89.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7feba36779de/vmlinux-0468be89.xz kernel image: https://storage.googleapis.com/syzbot-assets/b1cdc0506491/bzImage-0468be89.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+786b124fe4ce4dc99357@syzkaller.appspotmail.com RBP: 00007fa0905fe120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007fa091b9bf80 R15: 00007ffd2d08f908 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 3 PID: 7070 Comm: syz-executor.3 Not tainted 6.5.0-syzkaller-10885-g0468be89b3fa #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:strchr+0x1b/0xb0 lib/string.c:329 Code: 48 ad f7 48 8b 74 24 08 48 8b 14 24 eb 89 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 c1 ea 03 53 48 83 ec 10 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 07 89 RSP: 0018:ffffc90006d479e0 EFLAGS: 00010282 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c2ca000 RDX: 0000000000000000 RSI: 0000000000000025 RDI: 0000000000000000 RBP: ffffc90006d47a70 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90006d47a70 R13: 0000000000000cc0 R14: ffff888029f072f0 R15: 0000000000000001 FS: 00007fa0905fe6c0(0000) GS:ffff88806b900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005595cf80f000 CR3: 000000010b7d5000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvasprintf_const+0x25/0x190 lib/kasprintf.c:45 kobject_set_name_vargs+0x5a/0x130 lib/kobject.c:272 kobject_add_varg lib/kobject.c:366 [inline] kobject_add+0x12a/0x240 lib/kobject.c:424 device_add+0x290/0x1ac0 drivers/base/core.c:3560 cdev_device_add+0x12b/0x270 fs/char_dev.c:556 joydev_connect+0xbdc/0x1030 drivers/input/joydev.c:1001 input_attach_handler.isra.0+0x17c/0x250 drivers/input/input.c:1064 input_register_device+0xb1e/0x1130 drivers/input/input.c:2396 uinput_create_device drivers/input/misc/uinput.c:365 [inline] uinput_ioctl_handler.isra.0+0x1308/0x1d70 drivers/input/misc/uinput.c:904 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl fs/ioctl.c:857 [inline] __x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fa091a7cae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa0905fe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa091b9bf80 RCX: 00007fa091a7cae9 RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000003 RBP: 00007fa0905fe120 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 000000000000000b R14: 00007fa091b9bf80 R15: 00007ffd2d08f908 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:strchr+0x1b/0xb0 lib/string.c:329 Code: 48 ad f7 48 8b 74 24 08 48 8b 14 24 eb 89 90 f3 0f 1e fa 48 b8 00 00 00 00 00 fc ff df 48 89 fa 55 48 c1 ea 03 53 48 83 ec 10 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 51 0f b6 07 89 RSP: 0018:ffffc90006d479e0 EFLAGS: 00010282 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000c2ca000 RDX: 0000000000000000 RSI: 0000000000000025 RDI: 0000000000000000 RBP: ffffc90006d47a70 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc90006d47a70 R13: 0000000000000cc0 R14: ffff888029f072f0 R15: 0000000000000001 FS: 00007fa0905fe6c0(0000) GS:ffff88806b900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005595cf80f000 CR3: 000000010b7d5000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 ad lods %ds:(%rsi),%rax 2: f7 48 8b 74 24 08 48 testl $0x48082474,-0x75(%rax) 9: 8b 14 24 mov (%rsp),%edx c: eb 89 jmp 0xffffff97 e: 90 nop f: f3 0f 1e fa endbr64 13: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1a: fc ff df 1d: 48 89 fa mov %rdi,%rdx 20: 55 push %rbp 21: 48 c1 ea 03 shr $0x3,%rdx 25: 53 push %rbx 26: 48 83 ec 10 sub $0x10,%rsp * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 48 89 fa mov %rdi,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 04 jg 0x3c 38: 84 c0 test %al,%al 3a: 75 51 jne 0x8d 3c: 0f b6 07 movzbl (%rdi),%eax 3f: 89 .byte 0x89 --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup