“在低内存中检测到内存损坏”内核消息？

Question

我在低内存消息中检测到一些内存损坏。我读过关于它的这里，但恐怕我不能从讨论中得到任何东西。这确实发生在我暂停/简历时，但与其他有类似问题的人不同，我没有broadcom卡。这都是marvell以太网，没有无线网络。

这是一个台式塔，有：

Linux gentoomyuser3x86_64 3.10.25-gentoo #1 SMP 2014 x86_64英特尔(R) Core(TM)2四CPU Q6600 @ 2.40GHz GenuineIntel GNU/Linux

下面是日志输出：

[12960.735034] Corrupted low memory at ffff88000000fff0 (fff0 phys) = 40000000000000
[12960.735035] Corrupted low memory at ffff88000000fff8 (fff8 phys) = 250c60840020
[12960.735036] ------------[ cut here ]------------
[12960.735042] WARNING: at arch/x86/kernel/check.c:140 check_for_bios_corruption+0x10f/0x120()
[12960.735043] Memory corruption detected in low memory
[12960.735056] Modules linked in: nouveau cfbfillrect cfbimgblt video mxm_wmi wmi cfbcopyarea ttm fbcon bitblit softcursor font tileblit drm_kms_helper backlight fb fbdev fuse
[12960.735060] CPU: 0 PID: 9096 Comm: kworker/0:1 Not tainted 3.10.25-gentoo #1
[12960.735061] Hardware name: System manufacturer Maximus Formula/Maximus Formula, BIOS 1403    09/10/2009
[12960.735064] Workqueue: events check_corruption
[12960.735068]  0000000000000009 ffff8801165fdcf8 ffffffff8157431b ffff8801165fdd38
[12960.735070]  ffffffff81045e9b 0000000000000000 0000000000000000 ffff880000010000
[12960.735073]  ffffffff819b20b0 0000000000000001 ffff880000000000 ffff8801165fdd98
[12960.735074] Call Trace:
[12960.735079]  [<ffffffff8157431b>] dump_stack+0x19/0x1b
[12960.735082]  [<ffffffff81045e9b>] warn_slowpath_common+0x6b/0xa0
[12960.735085]  [<ffffffff81045f71>] warn_slowpath_fmt+0x41/0x50
[12960.735087]  [<ffffffff8102bc2f>] check_for_bios_corruption+0x10f/0x120
[12960.735090]  [<ffffffff8102bc49>] check_corruption+0x9/0x40
[12960.735094]  [<ffffffff81061f8f>] process_one_work+0x17f/0x420
[12960.735096]  [<ffffffff81062679>] worker_thread+0x119/0x370
[12960.735099]  [<ffffffff81062560>] ? rescuer_thread+0x2f0/0x2f0
[12960.735102]  [<ffffffff81068c4b>] kthread+0xbb/0xc0
[12960.735105]  [<ffffffff81068b90>] ? kthread_create_on_node+0x120/0x120
[12960.735109]  [<ffffffff815819ac>] ret_from_fork+0x7c/0xb0
[12960.735111]  [<ffffffff81068b90>] ? kthread_create_on_node+0x120/0x120
[12960.735113] ---[ end trace a3687665afd39e38 ]---

以及详细的lspci -v和一些lshw输出，以便更好地理解我的设置(如果需要的话)：

00:00.0 Host bridge: Intel Corporation 82X38/X48 Express DRAM Controller (rev 01)
    Subsystem: ASUSTeK Computer Inc. Device 8295
    Flags: bus master, fast devsel, latency 0
    Capabilities: [e0] Vendor Specific Information: Len=0c <?>

00:06.0 PCI bridge: Intel Corporation 82X38/X48 Express Host-Secondary PCI Express Bridge (rev 01) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
    I/O behind bridge: 0000d000-0000dfff
    Memory behind bridge: fd000000-feafffff
    Prefetchable memory behind bridge: 00000000f0000000-00000000f9ffffff
    Capabilities: [88] Subsystem: Intel Corporation Device 0000
    Capabilities: [80] Power Management version 3
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [a0] Express Root Port (Slot+), MSI 00
    Capabilities: [100] Virtual Channel
    Capabilities: [140] Root Complex Link
    Kernel driver in use: pcieport

00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02) (prog-if 00 [UHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 16
    I/O ports at c800 [size=32]
    Capabilities: [50] PCI Advanced Features
    Kernel driver in use: uhci_hcd

00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02) (prog-if 00 [UHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 21
    I/O ports at c880 [size=32]
    Capabilities: [50] PCI Advanced Features
    Kernel driver in use: uhci_hcd

00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02) (prog-if 00 [UHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 18
    I/O ports at cc00 [size=32]
    Capabilities: [50] PCI Advanced Features
    Kernel driver in use: uhci_hcd

00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) (prog-if 20 [EHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 18
    Memory at fcfffc00 (32-bit, non-prefetchable) [size=1K]
    Capabilities: [50] Power Management version 2
    Capabilities: [58] Debug port: BAR=1 offset=00a0
    Capabilities: [98] PCI Advanced Features
    Kernel driver in use: ehci-pci

00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02)
    Subsystem: ASUSTeK Computer Inc. Device 8277
    Flags: bus master, fast devsel, latency 0, IRQ 45
    Memory at fcff8000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: [50] Power Management version 2
    Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
    Capabilities: [100] Virtual Channel
    Capabilities: [130] Root Complex Link
    Kernel driver in use: snd_hda_intel

00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
    I/O behind bridge: 00001000-00001fff
    Memory behind bridge: fa000000-fa3fffff
    Prefetchable memory behind bridge: 00000000fbf00000-00000000fbffffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Capabilities: [a0] Power Management version 2
    Capabilities: [100] Virtual Channel
    Capabilities: [180] Root Complex Link
    Kernel driver in use: pcieport

00:1c.2 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 3 (rev 02) (prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
    I/O behind bridge: 0000e000-0000efff
    Memory behind bridge: feb00000-febfffff
    Prefetchable memory behind bridge: 00000000fa400000-00000000fa5fffff
    Capabilities: [40] Express Root Port (Slot+), MSI 00
    Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [90] Subsystem: ASUSTeK Computer Inc. Device 8277
    Capabilities: [a0] Power Management version 2
    Capabilities: [100] Virtual Channel
    Capabilities: [180] Root Complex Link
    Kernel driver in use: pcieport

00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02) (prog-if 00 [UHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 23
    I/O ports at c080 [size=32]
    Capabilities: [50] PCI Advanced Features
    Kernel driver in use: uhci_hcd

00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02) (prog-if 00 [UHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 19
    I/O ports at c400 [size=32]
    Capabilities: [50] PCI Advanced Features
    Kernel driver in use: uhci_hcd

00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02) (prog-if 00 [UHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 18
    I/O ports at c480 [size=32]
    Capabilities: [50] PCI Advanced Features
    Kernel driver in use: uhci_hcd

00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02) (prog-if 20 [EHCI])
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0, IRQ 23
    Memory at fcfff800 (32-bit, non-prefetchable) [size=1K]
    Capabilities: [50] Power Management version 2
    Capabilities: [58] Debug port: BAR=1 offset=00a0
    Capabilities: [98] PCI Advanced Features
    Kernel driver in use: ehci-pci

00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92) (prog-if 01 [Subtractive decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=04, subordinate=04, sec-latency=32
    Capabilities: [50] Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard

00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface Controller (rev 02)
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: bus master, medium devsel, latency 0
    Capabilities: [e0] Vendor Specific Information: Len=0c <?>

00:1f.2 SATA controller: Intel Corporation 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode] (rev 02) (prog-if 01 [AHCI 1.0])
    Subsystem: ASUSTeK Computer Inc. Device 8277
    Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 43
    I/O ports at bc00 [size=8]
    I/O ports at b880 [size=4]
    I/O ports at b800 [size=8]
    I/O ports at b480 [size=4]
    I/O ports at b400 [size=32]
    Memory at fcffe800 (32-bit, non-prefetchable) [size=2K]
    Capabilities: [80] MSI: Enable+ Count=1/16 Maskable- 64bit-
    Capabilities: [70] Power Management version 3
    Capabilities: [a8] SATA HBA v1.0
    Capabilities: [b0] PCI Advanced Features
    Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02)
    Subsystem: ASUSTeK Computer Inc. P5K PRO Motherboard
    Flags: medium devsel, IRQ 18
    Memory at fcfff400 (64-bit, non-prefetchable) [size=256]
    I/O ports at 0400 [size=32]

01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1) (prog-if 00 [VGA controller])
    Subsystem: Gigabyte Technology Co., Ltd Device 3546
    Flags: bus master, fast devsel, latency 0, IRQ 16
    Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
    Memory at f0000000 (64-bit, prefetchable) [size=128M]
    Memory at f8000000 (64-bit, prefetchable) [size=32M]
    I/O ports at dc00 [size=128]
    Expansion ROM at fea00000 [disabled] [size=512K]
    Capabilities: [60] Power Management version 3
    Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
    Capabilities: [78] Express Endpoint, MSI 00
    Capabilities: [b4] Vendor Specific Information: Len=14 <?>
    Capabilities: [100] Virtual Channel
    Capabilities: [128] Power Budgeting <?>
    Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?>
    Kernel driver in use: nouveau
    Kernel modules: nouveau

01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1)
    Subsystem: Gigabyte Technology Co., Ltd Device 3546
    Flags: bus master, fast devsel, latency 0, IRQ 17
    Memory at feafc000 (32-bit, non-prefetchable) [size=16K]
    Capabilities: [60] Power Management version 3
    Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
    Capabilities: [78] Express Endpoint, MSI 00
    Kernel driver in use: snd_hda_intel

02:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8056 PCI-E Gigabit Ethernet Controller (rev 12)
    Subsystem: ASUSTeK Computer Inc. Motherboard
    Flags: bus master, fast devsel, latency 0, IRQ 44
    Memory at febfc000 (64-bit, non-prefetchable) [size=16K]
    I/O ports at e800 [size=256]
    Expansion ROM at febc0000 [disabled] [size=128K]
    Capabilities: [48] Power Management version 3
    Capabilities: [50] Vital Product Data
    Capabilities: [5c] MSI: Enable+ Count=1/1 Maskable- 64bit+
    Capabilities: [e0] Express Legacy Endpoint, MSI 00
    Capabilities: [100] Advanced Error Reporting
    Kernel driver in use: sky2

lshw

        gentoomyuser3x86_64          
        description: Desktop Computer
        product: Maximus Formula (To Be Filled By O.E.M.)
        vendor: System manufacturer
        version: System Version
        serial: System Serial Number
        width: 64 bits
        capabilities: smbios-2.4 dmi-2.4
        configuration: boot=normal chassis=desktop family=To Be Filled By O.E.M. sku=To Be Filled By O.E.M. uuid=00020003-0004-0005-0006-000700080009
      *-core
           description: Motherboard
           product: Maximus Formula
           vendor: ASUSTeK Computer INC.
           physical id: 0
           version: Rev 1.xx
           serial: MB-1234567890
           slot: To Be Filled By O.E.M.
         *-firmware
              description: BIOS
              vendor: American Megatrends Inc.
              physical id: 0
              version: 1403
              date: 09/10/2009
              size: 64KiB
              capacity: 1984KiB
              capabilities: isa pci pnp apm upgrade shadowing escd cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification
         *-cpu
              description: CPU
              product: Intel(R) Core(TM)2 Quad CPU    Q6600  @ 2.40GHz
              vendor: Intel Corp.
              physical id: 4
              bus info: cpu@0
              version: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
              serial: To Be Filled By O.E.M.
              slot: LGA775
              size: 2394MHz
              capacity: 3800MHz
              width: 64 bits
              clock: 266MHz
              capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm tpr_shadow vnmi flexpriority cpufreq
            *-cache:0
                 description: L1 cache
                 physical id: 5
                 slot: L1-Cache
                 size: 128KiB
                 capacity: 128KiB
                 capabilities: internal write-back data
            *-cache:1
                 description: L2 cache
                 physical id: 6
                 slot: L2-Cache
                 size: 8MiB
                 capacity: 8MiB
                 capabilities: internal write-back instruction

这是Gentoo，但是在Arch，我可以找到这。在Arch上提到了一个允许“优雅”挂起/恢复的powerdown包。我暂停会议，原因如下：

echo -n "mem" > /sys/power/state

那么，我应该担心什么吗?我暂停系统的方式有什么问题吗？

正如建议的那样，我已经使用memtest86+运行了一次完整的传球(15分钟，我认为是12次测试)，并且没有出现错误。这是2x2gb海盗船。这个钻机被烧了，而且非常稳定。我已经编译了1000多个Gentoo软件包。

进一步测试

在社区成员确定了一个内核修补程序，该补丁已被部署以解决此错误(还原"epoll:使用可冻结的阻塞调用“)之后，我尝试将该修补程序应用于我的源代码。事实证明我已经安装了补丁！？

我还安装了suspend包，其中包含s2ram等。这个实用程序在挂起计算机的方式上似乎没有什么不同。我比较了使用s2ram和使用我使用的命令的挂起和唤醒事件日志，没有区别。我的结论是，在这方面，使用echo -n "mem" > /sys/power/state没有什么错。

我还用ethtool验证了唤醒局域网是禁用的(支持wake on: pg / wake on: d)，因此如果我正确理解，它不应该干扰电源事件。

也许是生物圈里的一个布景？或者，bios不再更新，并将触发异常，我们将不得不接受这种情况。

Answer 1

我怀疑这实际上是内存损坏，相反，当系统挂起/恢复或内核本身出现问题时，进程没有被正确挂起。

为此，我发现了一个内核错误，听起来可能是相关的：错误61781 -挂起后的用户空间内存损坏。分为: 1c441e9“epoll:使用可冻结的阻塞调用”。

有一个已开发的补丁，所以我会确保您的内核包含了上述修补程序。

Answer 2

下面是对这个memory corruption detected in low memory主题的另一个答案。在我的例子中，有效的原因是一个专有的驱动程序blob，它已经不再完全兼容更新的Linux内核。

这些驱动程序块被不同的厂商使用，比如Broadcom，它们不支持开源驱动程序。

我只需卸载专有驱动程序，重新启动，并重新安装它。

在Kubuntu (和Ubuntu)中，在“系统设置”中的“驱动程序管理”下可以很容易地做到这一点。这将启动“软件资源”，如果驱动程序块可以在“其他驱动程序”下管理。它将自动选择一个内核兼容的驱动程序blob (从互联网)并安装它。注意，当必须更换WiFi驱动程序时，必须通过局域网进行有线连接。否则，安装将失败，因为无法访问Internet。;-)