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Bug#928340: Linux 4.9.0-9-686: Boot hangs on Geode LX.

Started byBjörn Persson <Bjorn@xn--rombobjrn-67a.se>
First post2019-05-02 15:00 +0200
Last post2019-05-02 16:40 +0200
Articles 2 — 2 participants

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  Bug#928340: Linux 4.9.0-9-686: Boot hangs on Geode LX. Björn Persson <Bjorn@xn--rombobjrn-67a.se> - 2019-05-02 15:00 +0200
    Bug#928340: Linux 4.9.0-9-686: Boot hangs on Geode LX. Ben Hutchings <ben@decadent.org.uk> - 2019-05-02 16:40 +0200

#63982 — Bug#928340: Linux 4.9.0-9-686: Boot hangs on Geode LX.

FromBjörn Persson <Bjorn@xn--rombobjrn-67a.se>
Date2019-05-02 15:00 +0200
SubjectBug#928340: Linux 4.9.0-9-686: Boot hangs on Geode LX.
Message-ID<xTjtD-1GZ-1@gated-at.bofh.it>

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Package: src:linux
Version: 4.9.168-1
Severity: critical
File: /boot/vmlinuz-4.9.0-9-686
Justification: breaks the whole system

Dear Maintainer,

Debian 9 fails to boot on a Soekris net5501 with a Geode LX processor.
Debian 8 worked fine. Running Debian 9 on Linux 3.16.0-8-586 from Debian
8 works. (That's what I'm running Reportbug on.) Linux 4.9.0-7-686,
4.9.0-8-686 and 4.9.0-9-686 appear to hang early in the boot process.
The disk activity light remains lit when the system hangs. I'm attaching
a boot log acquired over a serial console.

I'm reporting this against the kernel because replacing only the kernel
works around the problem, but it looks like SystemD has been started
when the hang occurs, so I suppose a userspace issue can't be completely
ruled out.

Given that a kernel compiled for i586 works and one compiled for i686
does not, one might suspect that the processor isn't i686-compatible.
This seems to be rather unclear. According to the release notes this
processor should still be supported. It has all of the flags that this
script tests for:
https://www.debian.org/releases/stretch/i386/release-notes/ch-information#i386-is-now-almost-i686

On the debian-user mailing list, some people say that support for Geode
LX has been dropped. Others say it should work. If it is actually no
longer supported, then please reassign this bug report to the release
notes. In that case the release notes should be updated to document
this, and provide an accurate test.

As near as I can tell this processor is a Geode LX 800. The bios boot
screen calls it "Geode LX 500 MHz". It looks very much like this:
https://commons.wikimedia.org/wiki/File:AMD_Geode_LX_800_CPU.jpg

The text on the processor is:

AMD
Geode
ALXC800EETJCVC
0703CQA
2003-05 C1
TAIWAN

$ cat /proc/cpuinfo 
processor       : 0
vendor_id       : AuthenticAMD
cpu family      : 5
model           : 10
model name      : Geode(TM) Integrated Processor by AMD PCS
stepping        : 2
microcode       : 0x8b
cpu MHz         : 499.900
cache size      : 128 KB
fdiv_bug        : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu de pse tsc msr cx8 sep pge cmov clflush mmx mmxext 3dnowext 3dnow vmmcall
bogomips        : 999.80
clflush size    : 32
cache_alignment : 32
address sizes   : 32 bits physical, 32 bits virtual
power management:


-- Package-specific info:
** Kernel log: boot messages should be attached

** Model information

** PCI devices:
00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] Host Bridge [1022:2080] (rev 31)
	Subsystem: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] Host Bridge [1022:2080]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 248, Cache Line Size: 32 bytes

00:01.2 Entertainment encryption device [1010]: Advanced Micro Devices, Inc. [AMD] Geode LX AES Security Block [1022:2082]
	Subsystem: Advanced Micro Devices, Inc. [AMD] Geode LX AES Security Block [1022:2082]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 10
	Region 0: Memory at a0000000 (32-bit, non-prefetchable) [size=16K]
	Kernel driver in use: Geode LX AES
	Kernel modules: geode_rng, geode_aes

00:06.0 Ethernet controller [0200]: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:3053] (rev 96)
	Subsystem: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:0106]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (750ns min, 2000ns max), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 11
	Region 0: I/O ports at e100 [size=256]
	Region 1: Memory at a0004000 (32-bit, non-prefetchable) [size=256]
	Capabilities: <access denied>
	Kernel driver in use: via-rhine
	Kernel modules: via_rhine

00:07.0 Ethernet controller [0200]: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:3053] (rev 96)
	Subsystem: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:0106]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (750ns min, 2000ns max), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 5
	Region 0: I/O ports at e200 [size=256]
	Region 1: Memory at a0004100 (32-bit, non-prefetchable) [size=256]
	Capabilities: <access denied>
	Kernel driver in use: via-rhine
	Kernel modules: via_rhine

00:08.0 Ethernet controller [0200]: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:3053] (rev 96)
	Subsystem: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:0106]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (750ns min, 2000ns max), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 9
	Region 0: I/O ports at e300 [size=256]
	Region 1: Memory at a0004200 (32-bit, non-prefetchable) [size=256]
	Capabilities: <access denied>
	Kernel driver in use: via-rhine
	Kernel modules: via_rhine

00:09.0 Ethernet controller [0200]: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:3053] (rev 96)
	Subsystem: VIA Technologies, Inc. VT6105M [Rhine-III] [1106:0106]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (750ns min, 2000ns max), Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 12
	Region 0: I/O ports at e400 [size=256]
	Region 1: Memory at a0004300 (32-bit, non-prefetchable) [size=256]
	Capabilities: <access denied>
	Kernel driver in use: via-rhine
	Kernel modules: via_rhine

00:14.0 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] ISA [1022:2090] (rev 03)
	Subsystem: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] ISA [1022:2090]
	Control: I/O+ Mem- BusMaster- SpecCycle+ MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Region 0: I/O ports at 6000 [size=8]
	Region 1: I/O ports at 6100 [size=256]
	Region 2: I/O ports at 6200 [size=64]
	Kernel driver in use: cs5535-mfd
	Kernel modules: cs5535_mfd

00:14.2 IDE interface [0101]: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] IDE [1022:209a] (rev 01) (prog-if 80 [Master])
	Subsystem: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] IDE [1022:209a]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 32 bytes
	Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable) [size=8]
	Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable)
	Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable) [size=8]
	Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable)
	Region 4: I/O ports at e000 [size=16]
	Kernel driver in use: pata_amd
	Kernel modules: pata_amd, pata_cs5536, ata_generic

00:15.0 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] OHC [1022:2094] (rev 02) (prog-if 10 [OHCI])
	Subsystem: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] OHC [1022:2094]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 15
	Region 0: Memory at a0005000 (32-bit, non-prefetchable) [size=4K]
	Kernel driver in use: ohci-pci
	Kernel modules: ohci_pci

00:15.1 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] EHC [1022:2095] (rev 02) (prog-if 20 [EHCI])
	Subsystem: Advanced Micro Devices, Inc. [AMD] CS5536 [Geode companion] EHC [1022:2095]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 32 bytes
	Interrupt: pin A routed to IRQ 15
	Region 0: Memory at a0006000 (32-bit, non-prefetchable) [size=4K]
	Kernel driver in use: ehci-pci
	Kernel modules: ehci_pci


** USB devices:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub


-- System Information:
Debian Release: 9.9
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-debug'), (500, 'stable')
Architecture: i386 (i586)

Kernel: Linux 3.16.0-8-586
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages linux-image-4.9.0-9-686 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.130
ii  kmod                                    23-2
ii  linux-base                              4.5

Versions of packages linux-image-4.9.0-9-686 recommends:
ii  firmware-linux-free  3.4
ii  irqbalance           1.1.0-2.3

Versions of packages linux-image-4.9.0-9-686 suggests:
pn  debian-kernel-handbook  <none>
ii  grub-pc                 2.02~beta3-5+deb9u1
pn  linux-doc-4.9           <none>

Versions of packages linux-image-4.9.0-9-686 is related to:
pn  firmware-amd-graphics     <none>
pn  firmware-atheros          <none>
pn  firmware-bnx2             <none>
pn  firmware-bnx2x            <none>
pn  firmware-brcm80211        <none>
pn  firmware-cavium           <none>
pn  firmware-intel-sound      <none>
pn  firmware-intelwimax       <none>
pn  firmware-ipw2x00          <none>
pn  firmware-ivtv             <none>
pn  firmware-iwlwifi          <none>
pn  firmware-libertas         <none>
pn  firmware-linux-nonfree    <none>
pn  firmware-misc-nonfree     <none>
pn  firmware-myricom          <none>
pn  firmware-netxen           <none>
pn  firmware-qlogic           <none>
pn  firmware-realtek          <none>
pn  firmware-samsung          <none>
pn  firmware-siano            <none>
pn  firmware-ti-connectivity  <none>
pn  xen-hypervisor            <none>

-- no debconf information

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#63985

FromBen Hutchings <ben@decadent.org.uk>
Date2019-05-02 16:40 +0200
Message-ID<xTl2p-2JR-1@gated-at.bofh.it>
In reply to#63982

[Multipart message — attachments visible in raw view] — view raw

On Thu, 2019-05-02 at 14:44 +0200, Björn Persson wrote:
> Package: src:linux
> Version: 4.9.168-1
> Severity: critical
> File: /boot/vmlinuz-4.9.0-9-686
> Justification: breaks the whole system
> 
> Dear Maintainer,
> 
> Debian 9 fails to boot on a Soekris net5501 with a Geode LX processor.
> Debian 8 worked fine. Running Debian 9 on Linux 3.16.0-8-586 from Debian
> 8 works. (That's what I'm running Reportbug on.) Linux 4.9.0-7-686,
> 4.9.0-8-686 and 4.9.0-9-686 appear to hang early in the boot process.
> The disk activity light remains lit when the system hangs. I'm attaching
> a boot log acquired over a serial console.
> 
> I'm reporting this against the kernel because replacing only the kernel
> works around the problem, but it looks like SystemD has been started
> when the hang occurs, so I suppose a userspace issue can't be completely
> ruled out.
> 
> Given that a kernel compiled for i586 works and one compiled for i686
> does not, one might suspect that the processor isn't i686-compatible.
> This seems to be rather unclear. According to the release notes this
> processor should still be supported. It has all of the flags that this
> script tests for:
> https://www.debian.org/releases/stretch/i386/release-notes/ch-information#i386-is-now-almost-i686
[...]

The Geode LX's CPUID has family=5 (586), but I agree with your
understanding that it has all the important features of a 686 and
should still be supported.  In fact, I've specifically enabled
continued support for it in the current (buster/sid) 686 kernel
configuration.

I'm afraid I don't have any immediate ideas for how to fix or debug
this.

Ben.

-- 
Ben Hutchings
It is easier to write an incorrect program
than to understand a correct one.

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