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=-0.7 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 EF27BC433DF for ; Sun, 28 Jun 2020 11:29:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D15F220720 for ; Sun, 28 Jun 2020 11:29:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726225AbgF1L3S (ORCPT ); Sun, 28 Jun 2020 07:29:18 -0400 Received: from mail-il1-f200.google.com ([209.85.166.200]:55261 "EHLO mail-il1-f200.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726231AbgF1L3S (ORCPT ); Sun, 28 Jun 2020 07:29:18 -0400 Received: by mail-il1-f200.google.com with SMTP id d18so10194023ill.21 for ; Sun, 28 Jun 2020 04:29:17 -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=esH9pYBPT18QteRNwywg+df/d1ux0Pe9Ptz6+tlWA00=; b=Jy8mVG3wLnFI4gpLqHSpHoCFWHesTVUsKHZ+4nlL08WsuSbjAx72Pv0U7G1wsKzd4u d6SDHFCHjSf6tVpLXMfxyeT5Frjj/26LgFn2Vq0Wbm2VAxV1vuHjPlyIjJF+HIVBsh7a hzF4yPdVHPcvhboi9FcflP5HrBGckntdTYhf2H1GIJdrnokUjxHLqAeUizRRK1c0t4o2 /DUlsuSx/gVlnFhTQgws1wDav5jGpDQTQOSTytIW/2aGS6E+xdVsa/hjWaFnCW6FLxOn PS1tx740hbIg8TyVhe8muGcV5ubwa6JnMKGy/h+PaMzLtk2xMfGmDft/qZWMgsqBvCMD qtFQ== X-Gm-Message-State: AOAM531LZqKSHyzFjerdytXVwzsLBE13GTOTs0gn6R32zYN+7HbT7a7U m6KTuR++nwNMj4N6kgvZlL5h/IDpH15du+LBiYA5+dfebHTQ X-Google-Smtp-Source: ABdhPJxpGcf5yUA8noMC/0MaagCzM6ZAWL9D190r3lVvw6xy+/6E9uPD9FjvhHT+JlVjAUr4Y/woSluACHEP/C4eId3ww2U+x0Qv MIME-Version: 1.0 X-Received: by 2002:a5d:9313:: with SMTP id l19mr11900062ion.150.1593343757135; Sun, 28 Jun 2020 04:29:17 -0700 (PDT) Date: Sun, 28 Jun 2020 04:29:17 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000a6348d05a9234041@google.com> Subject: WARNING in tracepoint_add_func From: syzbot To: linux-kernel@vger.kernel.org, mathieu.desnoyers@polymtl.ca, mingo@elte.hu, netdev@vger.kernel.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 7a64135f libbpf: Adjust SEC short cut for expected attach .. git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=142782e3100000 kernel config: https://syzkaller.appspot.com/x/.config?x=dcc6334acae363d4 dashboard link: https://syzkaller.appspot.com/bug?extid=721aa903751db87aa244 compiler: gcc (GCC) 10.1.0-syz 20200507 Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+721aa903751db87aa244@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16762 at kernel/tracepoint.c:243 tracepoint_add_func+0x254/0x880 kernel/tracepoint.c:243 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 16762 Comm: syz-executor.4 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x18f/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:231 __warn.cold+0x20/0x45 kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 exc_invalid_op+0x24d/0x400 arch/x86/kernel/traps.c:235 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563 RIP: 0010:tracepoint_add_func+0x254/0x880 kernel/tracepoint.c:243 Code: 44 24 20 48 8b 5b 08 80 38 00 0f 85 6b 05 00 00 48 8b 44 24 08 48 3b 58 08 0f 85 2d ff ff ff 41 bc ef ff ff ff e8 4c 78 fe ff <0f> 0b e8 45 78 fe ff 44 89 e0 48 83 c4 38 5b 5d 41 5c 41 5d 41 5e RSP: 0018:ffffc90001497a98 EFLAGS: 00010216 RAX: 000000000000199a RBX: ffffffff89b99040 RCX: ffffc90011df4000 RDX: 0000000000040000 RSI: ffffffff8174d824 RDI: ffff8880979adb30 RBP: ffffffff814f1b80 R08: 0000000000000000 R09: ffffffff89bf9867 R10: 000000000000000a R11: 0000000000000000 R12: 00000000ffffffef R13: 0000000000000001 R14: dffffc0000000000 R15: ffff8880979adb10 tracepoint_probe_register_prio kernel/tracepoint.c:315 [inline] tracepoint_probe_register+0x9c/0xe0 kernel/tracepoint.c:335 trace_event_reg+0x28f/0x350 kernel/trace/trace_events.c:304 perf_trace_event_reg kernel/trace/trace_event_perf.c:129 [inline] perf_trace_event_init+0x532/0x9a0 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:9330 perf_try_init_event+0x12a/0x560 kernel/events/core.c:10782 perf_init_event kernel/events/core.c:10834 [inline] perf_event_alloc.part.0+0xdee/0x36f0 kernel/events/core.c:11110 perf_event_alloc kernel/events/core.c:11489 [inline] __do_sys_perf_event_open+0x72c/0x2b50 kernel/events/core.c:11605 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb19 Code: Bad RIP value. RSP: 002b:00007f2d99608c78 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00000000004fa640 RCX: 000000000045cb19 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000020000100 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000841 R14: 00000000004cb320 R15: 00007f2d996096d4 Kernel Offset: disabled --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.