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Date: Sun, 10 Sep 2023 17:30:37 -0400
From: John David Anglin <dave.anglin@...l.net>
To: Masahiro Yamada <masahiroy@...nel.org>,
Helge Deller <deller@....de>
Cc: linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-kbuild@...r.kernel.org,
Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH] linux/export: fix reference to exported functions for
parisc64
Hi Masahiro,
The attached change fixed boot at ddb5cdbafaaa 😁
However, v6.5.x boot is still broken:
Run /init as init process
process '/usr/bin/sh' started with executable stack
Loading, please wait...
Starting systemd-udevd version 254.1-3
e1000 alternatives: applied 0 out of 569 patches
e1000: Intel(R) PRO/1000 Network Driver
e1000: Copyright (c) 1999-2006 Intel Corporation.
scsi_mod alternatives: applied 0 out of 7 patches
SCSI subsystem initialized
usbcore alternatives: applied 0 out of 18 patches
usbcore: registered new interface driver usbfs
libata alternatives: applied 0 out of 3 patches
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
mptbase alternatives: applied 0 out of 73 patches
ehci_hcd alternatives: applied 0 out of 114 patches
sata_sil24 alternatives: applied 0 out of 56 patches
Fusion MPT base driver 3.04.20
Copyright (c) 1999-2008 LSI Corporation
sata_sil24 0000:00:01.0: Applying completion IRQ loss on PCI-X errata fix
scsi host0: sata_sil24
scsi host1: sata_sil24
pata_sil680 0000:60:02.0: sil680: 133MHz clock.
scsi host2: sata_sil24
ehci_pci alternatives: applied 0 out of 2 patches
ohci_hcd alternatives: applied 0 out of 144 patches
ehci-pci 0000:60:01.2: EHCI Host Controller
scsi host3: pata_sil680
ehci-pci 0000:60:01.2: new USB bus registered, assigned bus number 1
scsi host4: sata_sil24
ata1: SATA max UDMA/100 host m128@...fffffff80088000 port 0xffffffff80080000 ir6
ata2: SATA max UDMA/100 host m128@...fffffff80088000 port 0xffffffff80082000 ir6
ata3: SATA max UDMA/100 host m128@...fffffff80088000 port 0xffffffff80084000 ir6
ata4: SATA max UDMA/100 host m128@...fffffff80088000 port 0xffffffff80086000 ir6
e1000 0000:60:03.0 eth0: (PCI:33MHz:32-bit) 00:11:0a:31:8a:77
ehci-pci 0000:60:01.2: irq 71, io mem 0xffffffffb00a1000
scsi host5: pata_sil680
ata5: PATA max UDMA/133 cmd 0x26058 ctl 0x26064 bmdma 0x26040 irq 72
ata6: PATA max UDMA/133 cmd 0x26050 ctl 0x26060 bmdma 0x26048 irq 72
e1000 0000:60:03.0 eth0: Intel(R) PRO/1000 Network Connection
ehci-pci 0000:60:01.2: USB 2.0 started, EHCI 0.95
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002, bcdDevice= 6.05
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 6.5.2-dirty ehci_hcd
usb usb1: SerialNumber: 0000:60:01.2
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 5 ports detected
ata1: SATA link down (SStatus 0 SControl 0)
ata2: SATA link down (SStatus 0 SControl 0)
ata3: SATA link down (SStatus 0 SControl 0)
ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 0)
ata4.00: ATA-10: ST4000VN008-2DR166, SC60, max UDMA/133
ata4.00: 7814037168 sectors, multi 0: LBA48 NCQ (depth 31/32)
ata4.00: configured for UDMA/100
scsi 4:0:0:0: Direct-Access ATA ST4000VN008-2DR1 SC60 PQ: 0 ANSI: 5
ata6.00: ATAPI: HL-DT-STDVD+-RW GSA-H21L, 1.04, max UDMA/44
scsi 5:0:0:0: CD-ROM HL-DT-ST DVD+-RW GSA-H21L 1.04 PQ: 0 ANSI: 5
random: crng init done
Timed out for waiting the udev queue being empty.
Begin: Loading essential drivers ... done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done.
Begin: Running /scripts/local-premount ... done.
Timed out for waiting the udev queue being empty.
Begin: Waiting for root file system ... Begin: Running /scripts/local-block ....
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
Begin: Running /scripts/local-block ... done.
done.
Gave up waiting for root file system device. Common problems:
- Boot args (cat /proc/cmdline)
- Check rootdelay= (did the system wait long enough?)
- Missing modules (cat /proc/modules; ls /dev)
ALERT! LABEL=ROOT does not exist. Dropping to a shell!
Rebooting automatically due to panic= boot argument
I'll see if I can find the commit that breaks 6.5.
Thanks,
Dave
On 2023-09-10 3:47 a.m., Masahiro Yamada wrote:
> Hi John, Helge,
>
> Could you test the attached patch please?
>
>
> Again, I only tested compilation for this.
> I do not have parisc64 hardware.
> In my understanding, QEMU does not support hppa64.
> I do not find a way to test parisc64.
>
>
> Masahiro Yamada
>
>
>
>
>
> On Sun, Sep 10, 2023 at 4:20 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>> With a little more investigation,
>> I found arch/parisc/kernel/parisc_ksyms.c
>> is causing the issue.
>>
>> That file is a collection of EXPORT_SYMBOL
>> of assembly code.
>>
>> I will take a closer look tomorrow.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> On Sun, Sep 10, 2023 at 2:20 AM Masahiro Yamada <masahiroy@...nel.org> wrote:
>>> On Fri, Sep 8, 2023 at 7:02 AM John David Anglin <dave.anglin@...l.net> wrote:
>>>> On 2023-09-05 7:59 p.m., John David Anglin wrote:
>>>>> On 2023-09-05 5:57 p.m., John David Anglin wrote:
>>>>>> I'll check ddb5cdbafaaa.
>>>>> Similar fault with ddb5cdbafaaa:
>>>> The alignment of the __kstrtab_ symbols in vmlinux seems wrong.
>>> __kstrtab_ symbols do not need alignment.
>>>
>>> They were not aligned at all
>>> before ddb5cdbafaaa^.
>>>
>>>
>>>
>>>> I'm fairly certain that function
>>>> references prefixed with P% on hppa64 need 8 byte alignment.
>>> Yeah.
>>> In the following dump, all of __ksymtab_* are correctly 8-byte aligned.
>>>
>>>
>>>> 81662: 0000000040ea4358 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_system[...]
>>>> 81663: 0000000040ea4748 0 NOTYPE LOCAL DEFAULT 16 __kstrtabns_syst[...]
>>>> 81664: 0000000040e8e830 0 NOTYPE LOCAL DEFAULT 14 __ksymtab_system[...]
>>>> 81665: 0000000040ea4365 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_static[...]
>>>> 81666: 0000000040ea4748 0 NOTYPE LOCAL DEFAULT 16 __kstrtabns_stat[...]
>>>> 81667: 0000000040ea1640 0 NOTYPE LOCAL DEFAULT 15 __ksymtab_static[...]
>>>> 81668: 0000000040ea437c 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_reset_[...]
>>>> 81669: 0000000040ea4748 0 NOTYPE LOCAL DEFAULT 16 __kstrtabns_rese[...]
>>>> 81670: 0000000040e8bbc0 0 NOTYPE LOCAL DEFAULT 14 __ksymtab_reset_[...]
>>>> 81671: 0000000040ea438a 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_loops_[...]
>>>> 81672: 0000000040ea4748 0 NOTYPE LOCAL DEFAULT 16 __kstrtabns_loop[...]
>>>> 81673: 0000000040e86610 0 NOTYPE LOCAL DEFAULT 14 __ksymtab_loops_[...]
>>>> 81674: 0000000040ea439a 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_init_uts_ns
>>>> 81675: 0000000040ea4748 0 NOTYPE LOCAL DEFAULT 16 __kstrtabns_init[...]
>>>> 81676: 0000000040e99180 0 NOTYPE LOCAL DEFAULT 15 __ksymtab_init_uts_ns
>>>> 81677: 0000000040ea43a6 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_name_t[...]
>>>> 81678: 0000000040ea4748 0 NOTYPE LOCAL DEFAULT 16 __kstrtabns_name[...]
>>>> 81679: 0000000040e9b340 0 NOTYPE LOCAL DEFAULT 15 __ksymtab_name_t[...]
>>>> 81680: 0000000040ea43b4 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_wait_f[...]
>>>> 81681: 0000000040ea4748 0 NOTYPE LOCAL DEFAULT 16 __kstrtabns_wait[...]
>>>> 81682: 0000000040ea3638 0 NOTYPE LOCAL DEFAULT 15 __ksymtab_wait_f[...]
>>>> 81683: 0000000040ea43c7 0 NOTYPE LOCAL DEFAULT 16 __kstrtab_init_task
>>>> [...]
>>>>
>>>> I'm not sure how we get symbols that aren't 8 byte aligned. The ".balign 4" directive
>>>> in __KSYMTAB doesn't seem correct but it's not the whole problem.
>>>>
>>>> Dave
>>>>
>>>> --
>>>> John David Anglin dave.anglin@...l.net
>>>>
>>>
>>> --
>>> Best Regards
>>> Masahiro Yamada
>>
>>
>> --
>> Best Regards
>> Masahiro Yamada
>
>
--
John David Anglin dave.anglin@...l.net
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