Re: [Qemu-devel] [Bug 1691379] [NEW] NetBSD evbmips64el port installation doesn't work with qemu-system-mips64el.

[Kamil Rytarowski]

On 17.05.2017 19:58, Kamil Rytarowski wrote:
> On 17.05.2017 10:10, Thomas Huth wrote:
>> On 17.05.2017 09:52, Utkarsh Anand wrote:
>>> Public bug reported:
>>>
>>> I successfully installed the NetBSD evbmips64el port on gxemul but was
>>> unable to install it on qemu. Trying to boot it on qemu takes me to the
>>> 'db>' prompt. Here's the output and backtrace:
>>>
>>> panic: pcib_isa_intr_string: bogus isa irq 0x0
>>> kernel: breakpoint trap
>>> Stopped in pid 0.1 (system) at  netbsd:cpu_Debugger+0x4:        jr      ra
>>>                 bdslot: nop
>>> db> bt
>>> 0xffffffff805977f0: cpu_Debugger+4 
>>> (63061,90000000180003f8,6,ffffffff804c2290) ra ffffffff8030acd0 sz 0
>>> 0xffffffff805977f0: vpanic+158 (63061,90000000180003f8,6,ffffffff804c2290) 
>>> ra ffffffff8030ad7c sz 64
>>> 0xffffffff80597830: panic+34 (63061,ffffffff803d65b0,0,40) ra 
>>> ffffffff80109784 sz 96
>>> 0xffffffff80597890: pcib_isa_intr_string+6c (63061,ffffffff803d65b0,0,40) 
>>> ra ffffffff80149bfc sz 16
>>> 0xffffffff805978a0: uhci_pci_attach+16c (63061,ffffffff803d65b0,0,40) ra 
>>> ffffffff802f0400 sz 176
>>> 0xffffffff80597950: config_attach_loc+1c8 (63061,ffffffff803d65b0,0,40) ra 
>>> ffffffff802f053c sz 64
>>> 0xffffffff80597990: config_found_sm_loc+5c (63061,ffffffff803d65b0,0,40) ra 
>>> ffffffff80121354 sz 64
>>> 0xffffffff805979d0: pci_probe_device+524 (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff80121548 sz 288
>>> 0xffffffff80597af0: pci_enumerate_bus+1d0 (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff8012167c sz 160
>>> 0xffffffff80597b90: pcirescan+5c (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff801218c4 sz 32
>>> 0xffffffff80597bb0: pciattach+19c (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff802f0400 sz 80
>>> 0xffffffff80597c00: config_attach_loc+1c8 (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff802f053c sz 64
>>> 0xffffffff80597c40: config_found_sm_loc+5c (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff80108934 sz 64
>>> 0xffffffff80597c80: gt_attach+7c (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff802f0400 sz 112   
>>> 0xffffffff80597cf0: config_attach_loc+1c8 (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff802f053c sz 64
>>> 0xffffffff80597d30: config_found_sm_loc+5c (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff801086ac sz 64
>>> 0xffffffff80597d70: mainbus_attach+dc (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff802f0400 sz 96
>>> 0xffffffff80597dd0: config_attach_loc+1c8 (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff80104bf8 sz 64
>>> 0xffffffff80597e10: cpu_configure+28 (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff803d5f30 sz 16
>>> 0xffffffff80597e20: main+3a0 (63061,ffffffff803d65b0,0,0) ra 
>>> ffffffff801000dc sz 128       
>>> 0xffffffff80597ea0: kernel_text+dc (63061,ffffffff803d65b0,0,0) ra 0 sz 0
>>> User-level: pid 0.1
>>>
>>> Here's the command that I used:
>>>
>>> Build evbmips64el from source and then launch it from qemu (replace the
>>> paths relative to your system):
>>>
>>> qemu-system-mips64el -cdrom
>>> /extra/evbmips64/distrib/evbmips/cdroms/installcd/NetBSD-7.99.71
>>> -evbmips-mips64el.iso -hda /extra/evbmips64.img -kernel
>>> /extra/evbmips64/releasedir/evbmips/installation/netbsd-INSTALL_MALTA64
>>> -nographic -M malta
>>>
>>> (I've decompressed the kernel)
>>>
>>> Here's the output for qemu-system-mips64el --version :
>>>
>>> QEMU emulator version 2.7.1(qemu-2.7.1-6.fc25), Copyright (c) 2003-2016
>>> Fabrice Bellard and the QEMU Project developers
>>>
>>> This doesn't look like a NetBSD bug. I've attached a screenshot of the
>>> working installation using gxemul in the attachments.
>>
>> When reporting such issues, please always use the latest release of QEMU
>> first, so could you please try again with the latest upstream release of
>> QEMU (currently v2.9.0)? Thanks!
>>
>>  Thomas
>>
> 
> 7.99.71 is the most recent kernel ABI version (NetBSD-current).
> 
> Release engineering builds of NetBSD-current are hosted on nyftp.netbsd.org.
> 
> kernel:
> 
> http://nyftp.netbsd.org/pub/NetBSD-daily/HEAD/201705170540Z/evbmips-mips64el/installation/
> 
> installation medium:
> 
> http://nyftp.netbsd.org/pub/NetBSD-daily/HEAD/201705170540Z/images/
> 
> [In future there will be need to switch 201705170540Z to a newer
> snapshot, as this one will be removed.]
> 
> I will have to a look tonight and try to reproduce locally (and take
> MIPS 64-bit crash course).
> 

I've reproduced it locally with qemu/NetBSD-7.99.71 ver. 2.9 git HEAD
(rev. cdece0467c00007cf8e3).

    464 const char *
    465 pcib_isa_intr_string(void *v, int irq, char *buf, size_t len)
    466 {
    467         if (irq == 0 || irq >= ICU_LEN || irq == 2)
    468                 panic("%s: bogus isa irq 0x%x", __func__, irq);
    469
    470         snprintf(buf, len, "isa irq %d", irq);
    471         return buf;
    472 }

Generates: "panic: pcib_isa_intr_string: bogus isa irq 0x0".

https://nxr.netbsd.org/xref/src/sys/arch/evbmips/malta/pci/pcib.c?r=1.18#464

I will try to see if it ever worked (older NetBSD kernel / older qemu)
and if so, bisect. If it never worked I will see what I can do with it.

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