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=ham 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 332F1C433ED for ; Sat, 1 May 2021 05:51:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13A80613EF for ; Sat, 1 May 2021 05:51:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231717AbhEAFwG (ORCPT ); Sat, 1 May 2021 01:52:06 -0400 Received: from mail-io1-f70.google.com ([209.85.166.70]:38428 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231695AbhEAFwF (ORCPT ); Sat, 1 May 2021 01:52:05 -0400 Received: by mail-io1-f70.google.com with SMTP id v1-20020a5d94810000b02903e0f4d732b4so66430ioj.5 for ; Fri, 30 Apr 2021 22:51:16 -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=diU0RNkAZollR/UrfKoeFvOTmJ41JtW3kpnG7nzIye4=; b=HuQTgteMiVL5BuLzyQoYYjba/XtEbgCjmRL2eFk1EBU8Gvts4Ukdb3+B4CqRodMma1 Y6v2iirpSa/Z2OQszW+GdJqab419X/DvyULP7wloNtWFK6rpJDCUEaboD7luGjuZYJen 06GaLt0kDjBQFLq46KN/l7HGgb0+hydEbEDmBjkAQ0YkXAWzVchJfyXy1zhrU18768gx Tw7HxDIp4UiV35hO6i2tHpknHa3b8GN/OvhD7j9IzFlTKsYpdlexnpfVTADiJkCWJAMD 5IeUzIZIFyXUv7WjXmkEeBjPklVeEH0p9kc8JG4/rWZuib+H9XZlRS8ADczVIRv6fBU0 Y8zA== X-Gm-Message-State: AOAM53089HYL/KNfbRy7vOqStTDK+tWzen/ziBcCQCqi25/DwgJsIsUw 8FaVxidi6P+fJTfrxYbj6u6F5FW6mFiJ7BbshwJtGE7sRXJb X-Google-Smtp-Source: ABdhPJwtMxjHUuqXVYXVlLQ77T5B4K3t2pi07rUtT0Z+ek7e9SxkH3ZKKqcRXNa5CTthibApvwZDyxYs5Jzsx5dy9bMcuvi71Otn MIME-Version: 1.0 X-Received: by 2002:a92:c26a:: with SMTP id h10mr7042919ild.294.1619848275818; Fri, 30 Apr 2021 22:51:15 -0700 (PDT) Date: Fri, 30 Apr 2021 22:51:15 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000011fd4305c13e51c7@google.com> Subject: [syzbot] KASAN: user-memory-access Read in do_syscall_trace_enter From: syzbot To: aou@eecs.berkeley.edu, keescook@chromium.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, luto@amacapital.net, oleg@redhat.com, palmer@dabbelt.com, paul.walmsley@sifive.com, syzkaller-bugs@googlegroups.com, wad@chromium.org 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: 18a3c5f7 Merge tag 'for_linus' of git://git.kernel.org/pub.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=14fa7ca5d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=105967f18e189a79 dashboard link: https://syzkaller.appspot.com/bug?extid=e00eb4c4f40728f9bcde userspace arch: riscv64 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+e00eb4c4f40728f9bcde@syzkaller.appspotmail.com ================================================================== BUG: KASAN: user-memory-access in test_bit include/asm-generic/bitops/non-atomic.h:106 [inline] BUG: KASAN: user-memory-access in cpumask_test_cpu include/linux/cpumask.h:373 [inline] BUG: KASAN: user-memory-access in trace_sys_enter include/trace/events/syscalls.h:18 [inline] BUG: KASAN: user-memory-access in do_syscall_trace_enter+0x24c/0x5ae arch/riscv/kernel/ptrace.c:255 Read of size 8 at addr 000000000118e9ae by task syz-executor.1/3237 CPU: 1 PID: 3237 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller-00194-g18a3c5f7abfd #0 Hardware name: riscv-virtio,qemu (DT) Call Trace: [] walk_stackframe+0x0/0x23c arch/riscv/kernel/traps.c:202 [] dump_backtrace+0x40/0x4e arch/riscv/kernel/stacktrace.c:113 [] show_stack+0x22/0x2e arch/riscv/kernel/stacktrace.c:118 [] __dump_stack lib/dump_stack.c:79 [inline] [] dump_stack+0x148/0x1d8 lib/dump_stack.c:120 [] __kasan_report mm/kasan/report.c:403 [inline] [] kasan_report+0x146/0x18c mm/kasan/report.c:416 [] check_region_inline mm/kasan/generic.c:174 [inline] [] __asan_load8+0x4a/0x80 mm/kasan/generic.c:253 [] test_bit include/asm-generic/bitops/non-atomic.h:106 [inline] [] cpumask_test_cpu include/linux/cpumask.h:373 [inline] [] trace_sys_enter include/trace/events/syscalls.h:18 [inline] [] do_syscall_trace_enter+0x24c/0x5ae arch/riscv/kernel/ptrace.c:255 [] handle_syscall_trace_enter+0x6/0x1e ================================================================== Kernel panic - not syncing: panic_on_warn set ... SMP: stopping secondary CPUs Rebooting in 86400 seconds.. --- 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.