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_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 B02A7C43387 for ; Fri, 11 Jan 2019 09:43:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 888DF20874 for ; Fri, 11 Jan 2019 09:43:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731063AbfAKJnE (ORCPT ); Fri, 11 Jan 2019 04:43:04 -0500 Received: from mail-io1-f69.google.com ([209.85.166.69]:50910 "EHLO mail-io1-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729413AbfAKJnE (ORCPT ); Fri, 11 Jan 2019 04:43:04 -0500 Received: by mail-io1-f69.google.com with SMTP id p4so12428876iod.17 for ; Fri, 11 Jan 2019 01:43:04 -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=amx2XkG7aagwdb19rKeBE0GTMn22phY3lhhHTOZ/2zI=; b=k1MmFB5jFPH5L98oVgzJRPBZAPypNDYOkVZ2DsD8hxBYPDm50YCxk1Md+gKS6k0m0O xcuaIcymYxoMnRwmzjphio+wD3a7P+WdJ8Uzsw0HUR6SWq/vvcpWEo5Dn4fHNP7mzXp4 yAukcpfHavf+Xqb/KQsRJ9kj19VnYa7IH1N5dGbVr36b+XwJ9rGTgiHvkolvyDUhasSd nxVpmgzytytBWVH6bGsxlDALZlX8MF621uIGrTpeBqL6vaOHyhzT4oL4lMjDR5lrU5pJ LGRO8sHTNT7vp0n0AwRtFZBFYw/29w0Vj6nGeaojoqLvTfetnWBxnZgJO+2xke3AM8O9 IBGw== X-Gm-Message-State: AJcUukdPAIuGG8cJG4uucvdryO8ms9opp1uJnAXlQ79PMY4qGDFAchGg vh4/co5gY8WNkgxZYJ2uhlaMqcWuhsjwKi2GON/L8I/rylm5 X-Google-Smtp-Source: ALg8bN4+1VV1EisRCssXb0AeokcDq3r/7VStvIWDF16UUvJbZYpCYbrGh5PcNxSQNlBsBTXjoumsE5FbvLAuiTDXcqQNdDlTwNI4 MIME-Version: 1.0 X-Received: by 2002:a02:4596:: with SMTP id o22mr7382302jad.12.1547199783588; Fri, 11 Jan 2019 01:43:03 -0800 (PST) Date: Fri, 11 Jan 2019 01:43:03 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007f604f057f2b8509@google.com> Subject: WARNING in apparmor_cred_free From: syzbot To: jmorris@namei.org, john.johansen@canonical.com, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, serge@hallyn.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: Hello, syzbot found the following crash on: HEAD commit: b808822a75a3 Add linux-next specific files for 20190111 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=179c22f7400000 kernel config: https://syzkaller.appspot.com/x/.config?x=c052ead0aed5001b dashboard link: https://syzkaller.appspot.com/bug?extid=69ca07954461f189e808 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162d947f400000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=139f6c37400000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+69ca07954461f189e808@syzkaller.appspotmail.com ------------[ cut here ]------------ AppArmor WARN cred_label: ((!blob)): WARNING: CPU: 0 PID: 0 at security/apparmor/include/cred.h:30 cred_label security/apparmor/include/cred.h:30 [inline] WARNING: CPU: 0 PID: 0 at security/apparmor/include/cred.h:30 apparmor_cred_free+0x12f/0x1a0 security/apparmor/lsm.c:62 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.0.0-rc1-next-20190111 #10 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+0x1db/0x2d0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x48 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:cred_label security/apparmor/include/cred.h:30 [inline] RIP: 0010:apparmor_cred_free+0x12f/0x1a0 security/apparmor/lsm.c:62 Code: 7c 88 48 c7 c7 00 d0 7c 88 e8 fd 70 f2 fd 0f 0b eb a9 e8 54 3f 29 fe 48 c7 c6 c0 df 7c 88 48 c7 c7 00 d0 7c 88 e8 e1 70 f2 fd <0f> 0b 48 b8 00 00 00 00 00 fc ff df 80 38 00 75 4a 4c 8b 2c 25 00 RSP: 0018:ffff8880ae6079f8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff81687fa6 RDI: 0000000000000006 RBP: ffff8880ae607a18 R08: ffffffff8987dec0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a86b3100 R13: ffff8880a86b3100 R14: ffff8880a86b3188 R15: dffffc0000000000 security_cred_free+0x4b/0xf0 security/security.c:1490 put_cred_rcu+0x21f/0x6e0 kernel/cred.c:118 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2486 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2799 [inline] rcu_core+0xc4a/0x1680 kernel/rcu/tree.c:2780 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x180/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1b7/0x760 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:native_safe_halt+0x2/0x10 arch/x86/include/asm/irqflags.h:58 Code: ff ff ff 48 89 c7 48 89 45 d8 e8 79 6f d0 f9 48 8b 45 d8 e9 ce fe ff ff 48 89 df e8 68 6f d0 f9 eb 82 90 90 90 90 90 90 fb f4 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f4 c3 90 90 90 90 90 90 RSP: 0018:ffffffff89807c60 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff1325061 RBX: 1ffffffff1300f8f RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffffffff8987e73c RBP: ffffffff89807d20 R08: ffffffff8987dec0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff89807cf8 R14: 0000000000000000 R15: ffffffff899282f8 arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:555 default_idle_call+0x36/0x90 kernel/sched/idle.c:93 cpuidle_idle_call kernel/sched/idle.c:153 [inline] do_idle+0x386/0x5d0 kernel/sched/idle.c:262 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:353 rest_init+0x245/0x37b init/main.c:442 arch_call_rest_init+0xe/0x1b start_kernel+0x882/0x8bd init/main.c:742 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:470 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:451 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243 Kernel Offset: disabled Rebooting in 86400 seconds.. --- This bug is generated by a bot. 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