Re: kernel NULL pointer dereference at (null) - inside hub_disconnect

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On Mon, 28 Oct 2013, Luke-Jr wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=63961
> 
> Kernel version 3.10.15

> [1774470.503558] hub 2-1.3:1.0: hub_port_status failed (err = -71)
> [1774475.483021] hub 2-1.4:1.0: config failed, can't get hub status (err -110)
> [1774475.483042] BUG: unable to handle kernel NULL pointer dereference at           
> (null)
> [1774475.483075] IP: [<ffffffffa019b30e>] hub_quiesce+0x4e/0xb0 [usbcore]

This bug has been fixed in 3.12-rc1 by commit d0308d4b6b02 (usb: fix 
cleanup after failure in hub_configure()).  That commit has not been 
applied to the -stable branches.

Greg, it looks like this commit together with e58547eb9561 (usb: fail 
on usb_hub_create_port_device() errors) should be queued for all stable 
kernels going back to 3.7.y.

Alan Stern

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