Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-22 Thread Chris Rankin
--- Kay Sievers <[EMAIL PROTECTED]> wrote:
> Greg,
> it seems that:
>   arch/x86/pci/legacy.c :: pci_legacy_init()
> 
> tries to create already created "bridge" symlinks in 2.6.24. So we
> discover the same devices twice? Can this be a reason for the hang?

No, it can't be because it's *not* hanging in this configuration :-). It hangs 
when I *don't* add
the acpi=noirq option, whereas here it's just adding noise to the dmesg log. 
(I'm guessing Linux
doesn't call pci_legacy_init() when ACPI takes charge of the IRQs.)

Cheers,
Chris



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Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-22 Thread Kay Sievers
On Tue, Feb 19, 2008 at 9:47 AM, Kay Sievers <[EMAIL PROTECTED]> wrote:
> On Feb 18, 2008 9:06 PM, Stephen Hemminger <[EMAIL PROTECTED]> wrote:
>  > On Mon, 18 Feb 2008 19:42:25 + (GMT)
>  > Chris Rankin <[EMAIL PROTECTED]> wrote:
>  >
>  > > --- Stephen Hemminger <[EMAIL PROTECTED]> wrote:
>  > > > > > sysfs: duplicate filename 'bridge' can not be created
>  > > > > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
>  > > > > > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
>  > > > > >  [] show_trace_log_lvl+0x1a/0x2f
>  > > > > >  [] show_trace+0x12/0x14
>  > > > > >  [] dump_stack+0x6c/0x72
>  > > > > >  [] sysfs_add_one+0x57/0xbc
>  > > > > >  [] sysfs_create_link+0xc2/0x10d
>  > > > > >  [] pci_bus_add_devices+0xbd/0x103
>  > > > > >  [] pci_legacy_init+0x56/0xe3
>  > > > > >  [] kernel_init+0x157/0x2c3
>  > > > > >  [] kernel_thread_helper+0x7/0x10
>  > > > > >  ===
>  > > > > > pci :00:01.0: Error creating sysfs bridge symlink, 
> continuing...
>  > > > > > sysfs: duplicate filename 'bridge' can not be created
>  > > > > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()

Greg,
it seems that:
  arch/x86/pci/legacy.c :: pci_legacy_init()

tries to create already created "bridge" symlinks in 2.6.24. So we
discover the same devices twice? Can this be a reason for the hang?

I guess in 2.6.25, the warning is gone with:
  commit fd7d1ced29e5beb88c9068801da7a362606d8273
  Author: Greg Kroah-Hartman <[EMAIL PROTECTED]>
  Date:   Tue May 22 22:47:54 2007 -0400

  PCI: make pci_bus a struct device

  This moves the pci_bus class device to be a real struct device and at
  the same time, place it in the device tree in the correct location.
  Note, the old "bridge" symlink is now gone.

Thanks,
Kay
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Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-19 Thread Kay Sievers
On Feb 18, 2008 9:06 PM, Stephen Hemminger
<[EMAIL PROTECTED]> wrote:
> On Mon, 18 Feb 2008 19:42:25 + (GMT)
> Chris Rankin <[EMAIL PROTECTED]> wrote:
>
> > --- Stephen Hemminger <[EMAIL PROTECTED]> wrote:
> > > > > sysfs: duplicate filename 'bridge' can not be created
> > > > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > > > > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> > > > >  [] show_trace_log_lvl+0x1a/0x2f
> > > > >  [] show_trace+0x12/0x14
> > > > >  [] dump_stack+0x6c/0x72
> > > > >  [] sysfs_add_one+0x57/0xbc
> > > > >  [] sysfs_create_link+0xc2/0x10d
> > > > >  [] pci_bus_add_devices+0xbd/0x103
> > > > >  [] pci_legacy_init+0x56/0xe3
> > > > >  [] kernel_init+0x157/0x2c3
> > > > >  [] kernel_thread_helper+0x7/0x10
> > > > >  ===
> > > > > pci :00:01.0: Error creating sysfs bridge symlink, continuing...
> > > > > sysfs: duplicate filename 'bridge' can not be created
> > > > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > > > > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> > > > >  [] show_trace_log_lvl+0x1a/0x2f
> > > > >  [] show_trace+0x12/0x14
> > > > >  [] dump_stack+0x6c/0x72
> > > > >  [] sysfs_add_one+0x57/0xbc
> > > > >  [] sysfs_create_link+0xc2/0x10d
> > > > >  [] pci_bus_add_devices+0xbd/0x103
> > > > >  [] pci_bus_add_devices+0xa5/0x103
> > > > >  [] pci_legacy_init+0x56/0xe3
> > > > >  [] kernel_init+0x157/0x2c3
> > > > >  [] kernel_thread_helper+0x7/0x10
> > > > >  ===
> > > >
> > > > I have a vague feeling that this was fixed, perhaps in 2.6.24.x?
> > >
> > > Never heard of this, what is the initialization script that causes this?
> > > Also do you have the SYSFS_DEPRECATED option configured? that caused 
> > > issues
> > > with regular network drivers.
> >
> > Yes, SYSFS_DEPRECATED is enabled. And the init scripts are from Fedora 8.
>
> There was a bug (fixed in 2.6.24) that had to do with sysfs_create_link
> and SYSFS_DEPRECATED probably there is a similar problem with directories.

Chris, could you enable CONFIG_DEBUG_KOBJECT=y, it might show what
objects try to claim the same name.

Thanks,
Kay
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Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-18 Thread Stephen Hemminger
On Mon, 18 Feb 2008 19:42:25 + (GMT)
Chris Rankin <[EMAIL PROTECTED]> wrote:

> --- Stephen Hemminger <[EMAIL PROTECTED]> wrote:
> > > > sysfs: duplicate filename 'bridge' can not be created
> > > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > > > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> > > >  [] show_trace_log_lvl+0x1a/0x2f
> > > >  [] show_trace+0x12/0x14
> > > >  [] dump_stack+0x6c/0x72
> > > >  [] sysfs_add_one+0x57/0xbc
> > > >  [] sysfs_create_link+0xc2/0x10d
> > > >  [] pci_bus_add_devices+0xbd/0x103
> > > >  [] pci_legacy_init+0x56/0xe3
> > > >  [] kernel_init+0x157/0x2c3
> > > >  [] kernel_thread_helper+0x7/0x10
> > > >  ===
> > > > pci :00:01.0: Error creating sysfs bridge symlink, continuing...
> > > > sysfs: duplicate filename 'bridge' can not be created
> > > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > > > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> > > >  [] show_trace_log_lvl+0x1a/0x2f
> > > >  [] show_trace+0x12/0x14
> > > >  [] dump_stack+0x6c/0x72
> > > >  [] sysfs_add_one+0x57/0xbc
> > > >  [] sysfs_create_link+0xc2/0x10d
> > > >  [] pci_bus_add_devices+0xbd/0x103
> > > >  [] pci_bus_add_devices+0xa5/0x103
> > > >  [] pci_legacy_init+0x56/0xe3
> > > >  [] kernel_init+0x157/0x2c3
> > > >  [] kernel_thread_helper+0x7/0x10
> > > >  ===
> > > 
> > > I have a vague feeling that this was fixed, perhaps in 2.6.24.x?
> > 
> > Never heard of this, what is the initialization script that causes this?
> > Also do you have the SYSFS_DEPRECATED option configured? that caused issues
> > with regular network drivers.
> 
> Yes, SYSFS_DEPRECATED is enabled. And the init scripts are from Fedora 8.

There was a bug (fixed in 2.6.24) that had to do with sysfs_create_link
and SYSFS_DEPRECATED probably there is a similar problem with directories. 

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Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-18 Thread Chris Rankin
--- Stephen Hemminger <[EMAIL PROTECTED]> wrote:
> > > sysfs: duplicate filename 'bridge' can not be created
> > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> > >  [] show_trace_log_lvl+0x1a/0x2f
> > >  [] show_trace+0x12/0x14
> > >  [] dump_stack+0x6c/0x72
> > >  [] sysfs_add_one+0x57/0xbc
> > >  [] sysfs_create_link+0xc2/0x10d
> > >  [] pci_bus_add_devices+0xbd/0x103
> > >  [] pci_legacy_init+0x56/0xe3
> > >  [] kernel_init+0x157/0x2c3
> > >  [] kernel_thread_helper+0x7/0x10
> > >  ===
> > > pci :00:01.0: Error creating sysfs bridge symlink, continuing...
> > > sysfs: duplicate filename 'bridge' can not be created
> > > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> > >  [] show_trace_log_lvl+0x1a/0x2f
> > >  [] show_trace+0x12/0x14
> > >  [] dump_stack+0x6c/0x72
> > >  [] sysfs_add_one+0x57/0xbc
> > >  [] sysfs_create_link+0xc2/0x10d
> > >  [] pci_bus_add_devices+0xbd/0x103
> > >  [] pci_bus_add_devices+0xa5/0x103
> > >  [] pci_legacy_init+0x56/0xe3
> > >  [] kernel_init+0x157/0x2c3
> > >  [] kernel_thread_helper+0x7/0x10
> > >  ===
> > 
> > I have a vague feeling that this was fixed, perhaps in 2.6.24.x?
> 
> Never heard of this, what is the initialization script that causes this?
> Also do you have the SYSFS_DEPRECATED option configured? that caused issues
> with regular network drivers.

Yes, SYSFS_DEPRECATED is enabled. And the init scripts are from Fedora 8.

Cheers,
Chris






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Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-18 Thread Stephen Hemminger
On Mon, 18 Feb 2008 05:00:49 -0800
Andrew Morton <[EMAIL PROTECTED]> wrote:

> On Sun, 17 Feb 2008 00:54:08 + (GMT) Chris Rankin <[EMAIL PROTECTED]> 
> wrote:
> 
> > [Try this again, except this time I'll force the attachment as inline text!]
> > 
> > Hi,
> > 
> > I have managed to boot 2.6.24.1 on this machine, with the NMI watchdog 
> > enabled, by using the
> > "acpi=noirq" option. (There does seem to be some unhappiness with bridge 
> > symlinks in sysfs,
> > though.)
> > 
> > ...
> >
> > sysfs: duplicate filename 'bridge' can not be created
> > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> >  [] show_trace_log_lvl+0x1a/0x2f
> >  [] show_trace+0x12/0x14
> >  [] dump_stack+0x6c/0x72
> >  [] sysfs_add_one+0x57/0xbc
> >  [] sysfs_create_link+0xc2/0x10d
> >  [] pci_bus_add_devices+0xbd/0x103
> >  [] pci_legacy_init+0x56/0xe3
> >  [] kernel_init+0x157/0x2c3
> >  [] kernel_thread_helper+0x7/0x10
> >  ===
> > pci :00:01.0: Error creating sysfs bridge symlink, continuing...
> > sysfs: duplicate filename 'bridge' can not be created
> > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> >  [] show_trace_log_lvl+0x1a/0x2f
> >  [] show_trace+0x12/0x14
> >  [] dump_stack+0x6c/0x72
> >  [] sysfs_add_one+0x57/0xbc
> >  [] sysfs_create_link+0xc2/0x10d
> >  [] pci_bus_add_devices+0xbd/0x103
> >  [] pci_bus_add_devices+0xa5/0x103
> >  [] pci_legacy_init+0x56/0xe3
> >  [] kernel_init+0x157/0x2c3
> >  [] kernel_thread_helper+0x7/0x10
> >  ===
> 
> I have a vague feeling that this was fixed, perhaps in 2.6.24.x?

Never heard of this, what is the initialization script that causes this?
Also do you have the SYSFS_DEPRECATED option configured? that caused issues
with regular network drivers.
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Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-18 Thread Chris Rankin
--- Andrew Morton <[EMAIL PROTECTED]> wrote:
> > sysfs: duplicate filename 'bridge' can not be created
> > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> >  [] show_trace_log_lvl+0x1a/0x2f
> >  [] show_trace+0x12/0x14
> >  [] dump_stack+0x6c/0x72
> >  [] sysfs_add_one+0x57/0xbc
> >  [] sysfs_create_link+0xc2/0x10d
> >  [] pci_bus_add_devices+0xbd/0x103
> >  [] pci_legacy_init+0x56/0xe3
> >  [] kernel_init+0x157/0x2c3
> >  [] kernel_thread_helper+0x7/0x10
> >  ===
> > pci :00:01.0: Error creating sysfs bridge symlink, continuing...
> > sysfs: duplicate filename 'bridge' can not be created
> > WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> > Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
> >  [] show_trace_log_lvl+0x1a/0x2f
> >  [] show_trace+0x12/0x14
> >  [] dump_stack+0x6c/0x72
> >  [] sysfs_add_one+0x57/0xbc
> >  [] sysfs_create_link+0xc2/0x10d
> >  [] pci_bus_add_devices+0xbd/0x103
> >  [] pci_bus_add_devices+0xa5/0x103
> >  [] pci_legacy_init+0x56/0xe3
> >  [] kernel_init+0x157/0x2c3
> >  [] kernel_thread_helper+0x7/0x10
> >  ===
> 
> I have a vague feeling that this was fixed, perhaps in 2.6.24.x?

Obviously not in 2.6.24.1, and I thought that 2.6.24.2 just added the fix for 
the vmsplice
exploit. So unless 2.6.24.3 has been released...?

Cheers,
Chris



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Re: Linux 2.6.24.1 - kernel does not boot; IRQ trouble?

2008-02-18 Thread Andrew Morton
On Sun, 17 Feb 2008 00:54:08 + (GMT) Chris Rankin <[EMAIL PROTECTED]> wrote:

> [Try this again, except this time I'll force the attachment as inline text!]
> 
> Hi,
> 
> I have managed to boot 2.6.24.1 on this machine, with the NMI watchdog 
> enabled, by using the
> "acpi=noirq" option. (There does seem to be some unhappiness with bridge 
> symlinks in sysfs,
> though.)
> 
> ...
>
> sysfs: duplicate filename 'bridge' can not be created
> WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
>  [] show_trace_log_lvl+0x1a/0x2f
>  [] show_trace+0x12/0x14
>  [] dump_stack+0x6c/0x72
>  [] sysfs_add_one+0x57/0xbc
>  [] sysfs_create_link+0xc2/0x10d
>  [] pci_bus_add_devices+0xbd/0x103
>  [] pci_legacy_init+0x56/0xe3
>  [] kernel_init+0x157/0x2c3
>  [] kernel_thread_helper+0x7/0x10
>  ===
> pci :00:01.0: Error creating sysfs bridge symlink, continuing...
> sysfs: duplicate filename 'bridge' can not be created
> WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
> Pid: 1, comm: swapper Not tainted 2.6.24.1 #1
>  [] show_trace_log_lvl+0x1a/0x2f
>  [] show_trace+0x12/0x14
>  [] dump_stack+0x6c/0x72
>  [] sysfs_add_one+0x57/0xbc
>  [] sysfs_create_link+0xc2/0x10d
>  [] pci_bus_add_devices+0xbd/0x103
>  [] pci_bus_add_devices+0xa5/0x103
>  [] pci_legacy_init+0x56/0xe3
>  [] kernel_init+0x157/0x2c3
>  [] kernel_thread_helper+0x7/0x10
>  ===

I have a vague feeling that this was fixed, perhaps in 2.6.24.x?
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