Re: [PATCH -v3 40/47] PCI: Add pci bus removal through /sys/.../pci_bus/.../remove

[Yinghai Lu <yhlu.kernel@xxxxxxxxx>]

On Fri, Apr 6, 2012 at 8:50 AM, Jiang Liu <liuj97@xxxxxxxxx> wrote:
> Hi Yinghai,
>        I found many other drivers assume that a pci bus won't disappear if
> the corresponding PCI bridge device still exists. The sysfs interface proposed
> here breaks that assumption and may cause many access-after-free issues.
> So what's the purpose of this interface? Should we remove this interface or
> enhance other drivers to avoid invalid memory access issues?

ok, will make it only show up on root bus.

Yinghai
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