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 B45FBC43334 for ; Fri, 24 Jun 2022 13:10:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231304AbiFXNK3 (ORCPT ); Fri, 24 Jun 2022 09:10:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48312 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231134AbiFXNK1 (ORCPT ); Fri, 24 Jun 2022 09:10:27 -0400 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C3AE33E3D for ; Fri, 24 Jun 2022 06:10:23 -0700 (PDT) Received: by mail-il1-f200.google.com with SMTP id i8-20020a056e020d8800b002d931252904so1338198ilj.23 for ; Fri, 24 Jun 2022 06:10:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; 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charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 08897940f458 Add linux-next specific files for 20220623 git tree: linux-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=14fc8c60080000 kernel config: https://syzkaller.appspot.com/x/.config?x=fb185a52c6ad0a8e dashboard link: https://syzkaller.appspot.com/bug?extid=aa620fb1ece874a3f34c compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=116b4140080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17ab12e4080000 The issue was bisected to: commit f2d8c2606825317b77db1f9ba0fc26ef26160b30 Author: Alan Stern Date: Mon Jun 13 14:17:03 2022 +0000 usb: gadget: Fix non-unique driver names in raw-gadget driver bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15b40318080000 final oops: https://syzkaller.appspot.com/x/report.txt?x=17b40318080000 console output: https://syzkaller.appspot.com/x/log.txt?x=13b40318080000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+aa620fb1ece874a3f34c@syzkaller.appspotmail.com Fixes: f2d8c2606825 ("usb: gadget: Fix non-unique driver names in raw-gadget driver") ================================================================== BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline] BUG: KASAN: null-ptr-deref in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] BUG: KASAN: null-ptr-deref in ida_free+0x1b6/0x2e0 lib/idr.c:510 Read of size 8 at addr 0000000000000000 by task syz-executor185/3627 CPU: 1 PID: 3627 Comm: syz-executor185 Not tainted 5.19.0-rc3-next-20220623-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 kasan_report+0xbe/0x1f0 mm/kasan/report.c:495 check_region_inline mm/kasan/generic.c:183 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] ida_free+0x1b6/0x2e0 lib/idr.c:510 dev_free+0xec/0x700 drivers/usb/gadget/legacy/raw_gadget.c:212 kref_put include/linux/kref.h:65 [inline] raw_release+0x219/0x290 drivers/usb/gadget/legacy/raw_gadget.c:424 __fput+0x277/0x9d0 fs/file_table.c:317 task_work_run+0xdd/0x1a0 kernel/task_work.c:177 exit_task_work include/linux/task_work.h:38 [inline] do_exit+0xb05/0x2a00 kernel/exit.c:795 do_group_exit+0xd2/0x2f0 kernel/exit.c:925 __do_sys_exit_group kernel/exit.c:936 [inline] __se_sys_exit_group kernel/exit.c:934 [inline] __x64_sys_exit_group+0x3a/0x50 kernel/exit.c:934 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+0x46/0xb0 RIP: 0033:0x7f12d28b6bd9 Code: Unable to access opcode bytes at RIP 0x7f12d28b6baf. RSP: 002b:00007ffea2859da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f12d292b3f0 RCX: 00007f12d28b6bd9 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 000000000000000b R10: 00007ffea2857e00 R11: 0000000000000246 R12: 00007f12d292b3f0 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 ================================================================== --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches