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=-1.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SHORT_SHORTNER,SPF_HELO_NONE, SPF_PASS autolearn=no 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 2F969C433DB for ; Tue, 5 Jan 2021 15:27:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EACB522B4B for ; Tue, 5 Jan 2021 15:27:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727519AbhAEP0L (ORCPT ); Tue, 5 Jan 2021 10:26:11 -0500 Received: from mail-io1-f72.google.com ([209.85.166.72]:34379 "EHLO mail-io1-f72.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726391AbhAEP0F (ORCPT ); Tue, 5 Jan 2021 10:26:05 -0500 Received: by mail-io1-f72.google.com with SMTP id r16so14184838ioa.1 for ; Tue, 05 Jan 2021 07:25:49 -0800 (PST) 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=wrmsr5GggqH+TghkirLZ6pImT91cR6dCRqhWUi9enro=; b=PeeTEDu6xiXDZjZESXPlZFE69Lxw45Zd5fMvQsbKxFTp6TsWJdwbQ3t60rTOEP297U bmi3B87HAwTJLRcNsGXlWgvWWnS2hkOq7IDT2DOEGXnhR839xz/aUaerrqW0Eoo7EmcA b2a0M6sYi9JldTl6L5nFa+xXT9ylZhwGO1Jx0oWatZZBsRzHX3PT5EI8khPu50vcn1Yg E4wGwuXAv0Rrc6xwttB3HJ8wmTp+Y5imYJ+nuEd+pJRxL+KHzGtEoe4UNPcOrNh9HeOw EAnqqAkrStzHwe2vdslppPPtY1B/o9gaEleMnEt5IJ4DVNJu6NKwYYjQBwMHZiA4U9TT OKmg== X-Gm-Message-State: AOAM530Sgxr8tGhGuYfyYng1HfN+AGqeKxEwWoGHe2QhiXH+aKDVhXnK pRfFtFuUaZ3/hUd6pFNEen+qIbD45GInXwNP/X7H03Qcy7Nu X-Google-Smtp-Source: ABdhPJycdNpl2toyalfRRsA2ioEtmD60eKrxNPmp14lkwxLLj19KViYyOvtMc4CIb25Hhc1CQgTPCYRl5DBRzpPE3bROyvg67Crl MIME-Version: 1.0 X-Received: by 2002:a05:6638:250e:: with SMTP id v14mr201090jat.41.1609860324579; Tue, 05 Jan 2021 07:25:24 -0800 (PST) Date: Tue, 05 Jan 2021 07:25:24 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c8dd4a05b828d04c@google.com> Subject: KASAN: vmalloc-out-of-bounds Read in bpf_trace_run7 From: syzbot To: andrii@kernel.org, ast@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, hawk@kernel.org, john.fastabend@gmail.com, kafai@fb.com, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, netdev@vger.kernel.org, rostedt@goodmis.org, songliubraving@fb.com, syzkaller-bugs@googlegroups.com, yhs@fb.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 00a279e4 selftests/bpf: Add tests for user- and non-CO-RE .. git tree: bpf-next console output: https://syzkaller.appspot.com/x/log.txt?x=11b1fc1f500000 kernel config: https://syzkaller.appspot.com/x/.config?x=2eb8bc0ec06304ce dashboard link: https://syzkaller.appspot.com/bug?extid=fad5d91c7158ce568634 compiler: gcc (GCC) 10.1.0-syz 20200507 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+fad5d91c7158ce568634@syzkaller.appspotmail.com ================================================================== BUG: KASAN: vmalloc-out-of-bounds in __bpf_trace_run kernel/trace/bpf_trace.c:2088 [inline] BUG: KASAN: vmalloc-out-of-bounds in bpf_trace_run7+0x48f/0x4a0 kernel/trace/bpf_trace.c:2130 Read of size 8 at addr ffffc90000ca0030 by task syz-executor.2/10711 CPU: 0 PID: 10711 Comm: syz-executor.2 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5/0x4c8 mm/kasan/report.c:385 __kasan_report mm/kasan/report.c:545 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562 __bpf_trace_run kernel/trace/bpf_trace.c:2088 [inline] bpf_trace_run7+0x48f/0x4a0 kernel/trace/bpf_trace.c:2130 __bpf_trace_percpu_alloc_percpu+0x1dc/0x220 include/trace/events/percpu.h:10 trace_percpu_alloc_percpu include/trace/events/percpu.h:10 [inline] pcpu_alloc+0xbc4/0x17e0 mm/percpu.c:1844 perf_trace_event_reg kernel/trace/trace_event_perf.c:107 [inline] perf_trace_event_init+0x35f/0xb20 kernel/trace/trace_event_perf.c:204 perf_trace_init+0x176/0x240 kernel/trace/trace_event_perf.c:228 perf_tp_event_init+0xa2/0x120 kernel/events/core.c:9563 perf_try_init_event+0x12a/0x570 kernel/events/core.c:11031 perf_init_event kernel/events/core.c:11083 [inline] perf_event_alloc.part.0+0xe5b/0x3a40 kernel/events/core.c:11361 perf_event_alloc kernel/events/core.c:11740 [inline] __do_sys_perf_event_open+0x647/0x2f30 kernel/events/core.c:11838 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e299 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1784968c68 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 000000000045e299 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 000000000119bfd0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffe18fb31bf R14: 00007f17849699c0 R15: 000000000119bf8c Memory state around the buggy address: ffffc90000c9ff00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000c9ff80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90000ca0000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90000ca0080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90000ca0100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ================================================================== --- This report is generated by a bot. 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