linux-kernel - Re: [PATCH 4/5] drivers/pci/pci.c Section mismatch

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 18 Mar 2010 16:37:50 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	René Bolldorf <xsecute@...glemail.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] drivers/pci/pci.c Section mismatch

On 03/18/10 16:34, René Bolldorf wrote:
> On 03/18/10 23:58, Randy Dunlap wrote:
>> On 03/18/10 15:08, Ren� Bolldorf wrote:
>>> Signed-off-by: Rene Bolldorf<xsecute@...glemail.com>
>>>
>>> diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
>>> index ddd55dc..a1f7d93 100644
>>> --- a/drivers/pci/pci.c
>>> +++ b/drivers/pci/pci.c
>>> @@ -2773,7 +2773,7 @@ int pci_resource_bar(struct pci_dev *dev, int
>>> resno, enum pci_bar_type *type)
>>>   /* Some architectures require additional programming to enable VGA */
>>>   static arch_set_vga_state_t arch_set_vga_state;
>>>
>>> -void __init pci_register_set_vga_state(arch_set_vga_state_t func)
>>> +void pci_register_set_vga_state(arch_set_vga_state_t func)
>>>   {
>>>       arch_set_vga_state = func;    /* NULL disables */
>>>   }
>>> -- 
>>
>> Hi,
>>
>> Please put the offending/warning messages in the patch description.
>> Include your analysis if it isn't obvious.
>>
>> thanks,
> 
> Hi,
> 
> the warning message was:
> WARNING: drivers/pci/built-in.o(__ksymtab+0x190): Section mismatch in
> reference from the variable __ksymtab_pci_register_set_vga_state to the
> function .init.text:pci_register_set_vga_state()
> The symbol pci_register_set_vga_state is exported and annotated __init
> Fix this by removing the __init annotation of pci_register_set_vga_state
> or drop the export.
> 
> $fgrep "pci_register_set_vga_state" `find .`
> 
> $./arch/x86/kernel/apic/x2apic_uv_x.c:
> pci_register_set_vga_state(uv_set_vga_state);
> $./include/linux/pci.h:extern void
> pci_register_set_vga_state(arch_set_vga_state_t func);
> $./drivers/pci/pci.c:void
> pci_register_set_vga_state(arch_set_vga_state_t func)
> $./drivers/pci/pci.c:EXPORT_SYMBOL(pci_register_set_vga_state);
> 
> this is a volatile function that set's a spec. state and is only used
> from uv_system_init(arch/x86/kernel/apic/x2apic_uv_x.c), the macro can
> also be removed.

Thanks.  Yes, we shouldn't export __init functions, so the patch makes
sense.

BTW, you need to cc: one or more maintainers so that someone will merge
your patches.  They don't scan the mailing lists looking for patches to merge.


-- 
~Randy
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/