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, URIBL_BLOCKED autolearn=unavailable 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 0F0A4C04AB6 for ; Fri, 31 May 2019 08:54:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E11CA265B0 for ; Fri, 31 May 2019 08:54:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726934AbfEaIyH (ORCPT ); Fri, 31 May 2019 04:54:07 -0400 Received: from mail-it1-f197.google.com ([209.85.166.197]:36772 "EHLO mail-it1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726515AbfEaIyG (ORCPT ); Fri, 31 May 2019 04:54:06 -0400 Received: by mail-it1-f197.google.com with SMTP id u131so7569529itc.1 for ; Fri, 31 May 2019 01:54:06 -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=6qnjHWDOwzLpNhNm6KCXLI8xjNxb9MDyO3pY4iTDiss=; b=OAxA9oY6H1EjtdTLdI8+/qVR0koQ0SBw2DUiFPk8BqeJaJxQ/dCiDKevdJ0mCxm5PF kuEbBtDZhblvLBZWrCyuYA8tHhNCm3NXTpE234AL9kzcbl9jweQTLUcL9I/jD/hML4eG DSKzZSifA1FeUBe42JM74pLhCXNZKqqNQRvR80OD6GuUJAp+ygw09u5XI6DsMARood1Q 5FITtHWeHLXLY3Esn9rfryAiD2Z+ZMlkvkwwmUPo1ZLMuTuR6k2boFV5ubD+lLceqBKT gYxkj6CyVBk19V8CAwneVWq2o3/62NlIauo2JLPHR7FsQQW+aQ7Fv57arFvHzz4LYOcs qwtg== X-Gm-Message-State: APjAAAW1p41ZSey0W3Td7vcNbME2U7Ze4DlMayymHWfnx+naN2j+KOkb i9C8QiDzPAx6XQjbxChC9LOM5mCS8TWr94VkRh540HGMN+Ln X-Google-Smtp-Source: APXvYqyk2gmntUlN5yf5AaqdRl0vyt17XjJy+0/mbjCtvRwKupNX9Lyg3KKv9vJpfjl/QJEMeYRKfzctQKl4MHTWRoxYVf2lbUD4 MIME-Version: 1.0 X-Received: by 2002:a6b:f910:: with SMTP id j16mr5830393iog.256.1559292845922; Fri, 31 May 2019 01:54:05 -0700 (PDT) Date: Fri, 31 May 2019 01:54:05 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000002ea227058a2b28a4@google.com> Subject: WARNING in bpf_base_func_proto From: syzbot To: linux-kernel@vger.kernel.org, mingo@redhat.com, netdev@vger.kernel.org, rostedt@goodmis.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 5fac1718 selftests: bpf: fix compiler warning in flow_diss.. git tree: bpf console output: https://syzkaller.appspot.com/x/log.txt?x=10fbeea2a00000 kernel config: https://syzkaller.appspot.com/x/.config?x=fc045131472947d7 dashboard link: https://syzkaller.appspot.com/bug?extid=5b595d1c2cd4d7d0f521 compiler: gcc (GCC) 9.0.0 20181231 (experimental) 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+5b595d1c2cd4d7d0f521@syzkaller.appspotmail.com ------------[ cut here ]------------ Could not allocate percpu trace_printk buffer WARNING: CPU: 0 PID: 26679 at kernel/trace/trace.c:3004 alloc_percpu_trace_buffer kernel/trace/trace.c:3004 [inline] WARNING: CPU: 0 PID: 26679 at kernel/trace/trace.c:3004 trace_printk_init_buffers+0x5b/0x60 kernel/trace/trace.c:3018 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 26679 Comm: syz-executor.1 Not tainted 5.2.0-rc1+ #2 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+0x172/0x1f0 lib/dump_stack.c:113 panic+0x2cb/0x744 kernel/panic.c:218 __warn.cold+0x20/0x4d kernel/panic.c:575 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986 RIP: 0010:alloc_percpu_trace_buffer kernel/trace/trace.c:3004 [inline] RIP: 0010:trace_printk_init_buffers+0x5b/0x60 kernel/trace/trace.c:3018 Code: ff be 04 00 00 00 bf 04 10 00 00 e8 7f 2a 21 00 48 85 c0 0f 85 8c 35 00 00 e8 91 71 fb ff 48 c7 c7 40 9a 6f 87 e8 03 b7 cd ff <0f> 0b eb c2 90 55 48 89 e5 41 57 49 c7 c7 e0 80 6f 87 41 56 49 89 RSP: 0018:ffff888063fbf6a8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000008c4e RSI: ffffffff815ac7e6 RDI: ffffed100c7f7ec7 RBP: ffff888063fbf6b8 R08: ffff88809eaea280 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8771a560 R13: 0000000000000006 R14: 0000000000000000 R15: 0000000000000006 bpf_get_trace_printk_proto+0xe/0x20 kernel/trace/bpf_trace.c:335 bpf_base_func_proto net/core/filter.c:5850 [inline] bpf_base_func_proto+0x199/0x1b0 net/core/filter.c:5812 sk_filter_func_proto+0x69/0x90 net/core/filter.c:5921 cg_skb_func_proto+0x43/0xe0 net/core/filter.c:5949 check_helper_call kernel/bpf/verifier.c:3240 [inline] do_check+0x513f/0xa950 kernel/bpf/verifier.c:6765 bpf_check+0x67c8/0x8fb0 kernel/bpf/verifier.c:8261 bpf_prog_load+0xdbe/0x1500 kernel/bpf/syscall.c:1683 __do_sys_bpf+0xe03/0x43d0 kernel/bpf/syscall.c:2813 __se_sys_bpf kernel/bpf/syscall.c:2772 [inline] __x64_sys_bpf+0x73/0xb0 kernel/bpf/syscall.c:2772 do_syscall_64+0xfd/0x680 arch/x86/entry/common.c:301 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459279 Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f21ef383c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459279 RDX: 0000000000000070 RSI: 0000000020000100 RDI: 0000000000000005 RBP: 000000000075bfc0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f21ef3846d4 R13: 00000000004bf658 R14: 00000000004d09d8 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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.