linux-kernel - [lkp-robot] [x86/mm/tlb] a04f08a159: WARNING:at_arch/x86/include/asm/tlbflush.h:#native_flush_tlb

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Message-ID: <20171121031432.GA25541@yexl-desktop>
Date:   Tue, 21 Nov 2017 11:14:33 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     Ingo Molnar <mingo@...nel.org>, Andy Lutomirski <luto@...nel.org>,
        Daniel Gruss <daniel.gruss@...k.tugraz.at>,
        Hugh Dickins <hughd@...gle.com>,
        Kees Cook <keescook@...gle.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Michael Schwarz <michael.schwarz@...k.tugraz.at>,
        Moritz Lipp <moritz.lipp@...k.tugraz.at>,
        Peter Zijlstra <peterz@...radead.org>,
        Richard Fellner <richard.fellner@...dent.tugraz.at>,
        Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>,
        "H. Peter Anvin" <hpa@...or.com>, tipbuild@...or.com, lkp@...org
Subject: [lkp-robot] [x86/mm/tlb]  a04f08a159:
 WARNING:at_arch/x86/include/asm/tlbflush.h:#native_flush_tlb_global


FYI, we noticed the following commit (built with gcc-5):

commit: a04f08a1593be12b76cce3e5dbd5da98b77ce250 ("x86/mm/tlb: Make CR4-based TLB flushes more robust")
https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git WIP.x86/mm

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -m 420M

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+---------------------------------------------------------------------+------------+------------+
|                                                                     | 0fea213628 | a04f08a159 |
+---------------------------------------------------------------------+------------+------------+
| boot_successes                                                      | 12         | 0          |
| boot_failures                                                       | 0          | 12         |
| WARNING:at_arch/x86/include/asm/tlbflush.h:#native_flush_tlb_global | 0          | 12         |
| EIP:native_flush_tlb_global                                         | 0          | 12         |
+---------------------------------------------------------------------+------------+------------+



[    0.000000] WARNING: CPU: 0 PID: 0 at arch/x86/include/asm/tlbflush.h:258 native_flush_tlb_global+0x2e/0x81
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.14.0-01220-ga04f08a #1
[    0.000000] task: 5572afc0 task.stack: 55722000
[    0.000000] EIP: native_flush_tlb_global+0x2e/0x81
[    0.000000] EFLAGS: 00210046 CPU: 0
[    0.000000] EAX: 00000000 EBX: 00000800 ECX: 00200046 EDX: 00000000
[    0.000000] ESI: 55834000 EDI: 55837000 EBP: 55723f24 ESP: 55723f10
[    0.000000]  DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
[    0.000000] CR0: 80050033 CR2: 00000000 CR3: 15836000 CR4: 00000000
[    0.000000] Call Trace:
[    0.000000]  ? setup_arch+0xc2/0xa34
[    0.000000]  ? vprintk_default+0x12/0x14
[    0.000000]  ? start_kernel+0x5a/0x378
[    0.000000]  ? load_idt+0x9/0xb
[    0.000000]  ? i386_start_kernel+0x94/0x98
[    0.000000]  ? startup_32_smp+0x164/0x168
[    0.000000] Code: 83 ec 14 65 a1 14 00 00 00 89 45 fc 31 c0 e9 bb 0b 99 00 eb 2d e8 ff fc ff ff 89 c1 ff 15 24 c6 73 55 a1 6c c7 73 55 a8 80 75 02 <0f> ff 89 c2 80 f2 80 0f 22 e2 0f 22 e0 89 c8 ff 15 20 c6 73 55
[    0.000000] random: get_random_bytes called from init_oops_id+0x23/0x3b with crng_init=0
[    0.000000] ---[ end trace 0000000000000000 ]---


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.14.0-01220-ga04f08a" of type "text/plain" (126204 bytes)

View attachment "job-script" of type "text/plain" (4101 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (10416 bytes)