Re: [GIT PATCH] PCI patches for 2.6.15 - retry

[Reuben Farrelly <reuben-lkml@reub.net>]

On 12/01/2006 5:29 p.m., Andrew Morton wrote:
> Reuben Farrelly <reuben-lkml@reub.net> wrote:
>>
>>
>> On 10/01/2006 2:49 p.m., Andrew Morton wrote:
>>> Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
>>>> On Llu, 2006-01-09 at 16:44 -0800, Andrew Morton wrote:
>>>>> - Reuben Farrelly's oops in make_class_name().  Could be libata, or scsi
>>>>>   or driver core.
>>>> libata I think. I reproduced it on 2.6.14-mm2 by accident with a buggy
>>>> pata driver.
>>> Well that's all merged up now.  Reuben, could you please test 2.6.15git6
>>> tomorrow?
>> Seemingly not fixed afterall.  I've been doing many reboots lately getting to 
>> the bottom of the barrier/md bug and just before I hit this with -mm3 
>> (linus.patch -git7) which I believe is the same bug (the call trace looks very 
>> similar).
>>
>> ...
> 
> I'm getting my bugs confused now - there are so many.  Were you the person
> who reported this before?

Yes.  It was suggested I try -git6.  I reported that it seemed to be OK, but 
clearly it isn't.  Then again, I've done a hell of a lot of reboots in the last 
couple of days.

I've updated my list at

http://www.reub.net/files/kernel/outstanding-kernel-bugs.txt
and
http://www.reub.net/files/kernel/

This is a very basic text file which outlines the details of the various bugs 
that I have on the go at any given point in time and where they're at as.  There 
are various postings on LKML reporting almost all of them.

Thread starts http://www.ussg.iu.edu/hypermail/linux/kernel/0601.1/0619.html 
Greg KH (Mon Jan 09 2006 - 15:36:39 EST)


>> serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
>> ACPI: PCI Interrupt 0000:06:02.0[A] -> GSI 18 (level, low) -> IRQ 185
>> 0000:06:02.0: ttyS1 at I/O 0xbc00 (irq = 185) is a 16550A
>> 0000:06:02.0: ttyS2 at I/O 0xbc08 (irq = 185) is a 16550A
>> Floppy drive(s): fd0 is 1.44M
>> FDC 0 is a post-1991 82077
>> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
>> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
>> ahci: probe of 0000:00:1f.2 failed with error -12
>> ata1: SATA max UDMA/133 cmd 0x0 ctl 0x2 bmdma 0x0 irq 0
>> ata2: SATA max UDMA/133 cmd 0x0 ctl 0x2 bmdma 0x8 irq 0
>> Unable to handle kernel NULL pointer dereference at virtual address 00000000
>>   printing eip:
>> c023c873
>> *pde = 00000000
>> Oops: 0000 [#1]
>> SMP
>> last sysfs file:
>> Modules linked in:
>> CPU:    0
>> EIP:    0060:[<c023c873>]    Not tainted VLI
>> EFLAGS: 00010206   (2.6.15-mm3)
>> EIP is at make_class_name+0x28/0x8d
>> eax: 00000000   ebx: ffffffff   ecx: ffffffff   edx: c1a12224
>> esi: 00000009   edi: 00000000   ebp: c1921d2c   esp: c1921d1c
>> ds: 007b   es: 007b   ss: 0068
>> Process swapper (pid: 1, threadinfo=c1921000 task=c1920a90)
>> Stack: <0>c1a12224 c03913f8 c1a12224 c03913f8 c1921d54 c023cabd c1921d58 c0391380
>>         00000000 c1af39c0 c0391400 c1a12224 c1a12000 c1a12030 c1921d60 c023cb7b
>>         c1a120e4 c1921d74 c0255dbf c1a122c0 c1a43a40 00000000 c1921d80 c025e393
>> Call Trace:
>>   [<c0103c5d>] show_stack+0x9b/0xc0
>>   [<c0103de4>] show_registers+0x162/0x1e7
>>   [<c0103f8f>] die+0x126/0x231
>>   [<c01140db>] do_page_fault+0x271/0x5b9
>>   [<c01037df>] error_code+0x4f/0x54
>>   [<c023cabd>] class_device_del+0xa3/0x156
>>   [<c023cb7b>] class_device_unregister+0xb/0x15
>>   [<c0255dbf>] scsi_remove_host+0xb4/0xef
>>   [<c025e393>] ata_host_remove+0x11/0x1c
>>   [<c0260ec6>] ata_device_add+0x2e4/0xb7b
>>   [<c0261cd6>] ata_pci_init_one+0x322/0x387
>>   [<c0265b34>] piix_init_one+0x18c/0x338
>>   [<c01f4f4f>] pci_device_probe+0x44/0x5f
>>   [<c023bf62>] driver_probe_device+0x3e/0xb0
>>   [<c023c0df>] __driver_attach+0x8e/0x90
>>   [<c023b9f3>] bus_for_each_dev+0x44/0x62
>>   [<c023bece>] driver_attach+0x19/0x1b
>>   [<c023b687>] bus_add_driver+0x6d/0x126
>>   [<c023c350>] driver_register+0x6b/0x9b
>>   [<c01f50fb>] __pci_register_driver+0x6a/0x95
>>   [<c03e8ea8>] piix_init+0xf/0x22
>>   [<c01003cc>] init+0xff/0x325
>>   [<c0100d25>] kernel_thread_helper+0x5/0xb
>> Code: c8 5d c3 55 89 e5 57 56 53 83 ec 04 89 45 f0 89 c2 8b 40 48 8b 38 bb ff ff 
>> ff ff 89 d9 31 c0 f2 ae f7 d1 49 89 ce 8b 7a 08 89 d9 <f2> ae f7 d1 49 89 ca 8d 
>> 4e 02 8d 04 0a ba d0 00 00 00 e8 3b 72
> 
> Jeff, I beleive this is a sata bug.  ata_device_add() called
> ata_host_remove() and something under there isnot yet sufficiently
> initialised.

reuben