Hi Rabin,
> > After frying my system, I'm finally up and
> > running. Not sure if this was due to a git-pull
> > (only be a few days since the last pull), or what:
> > when waking from suspend I see this
> > (I know it says tainted in it, so this will be the only noise you'll
> > here from me on this);
> >
> > [ 274.327003] =============================================================================
> > [ 274.327528] BUG kmalloc-16: Object already free
> > [ 274.327877] -----------------------------------------------------------------------------
> > [ 274.327879]
> > [ 274.327890] INFO: Allocated in btusb_open+0x82/0x16f [btusb] age=0
> > cpu=1 pid=3763
> > [ 274.327899] INFO: Freed in btusb_open+0x13d/0x16f [btusb] age=0
> > cpu=1 pid=3763
> > [ 274.327905] INFO: Slab 0xc139a100 objects=64 used=62 fp=0xdcd08100
> > flags=0x400000c3
>
> There's a commit in the latest git which looks like it will solve the
> btusb suspend/resume issues: 5fbcd260.. ("[Bluetooth] Fix USB disconnect
> handling of btusb driver").
>
> Marcel / linux-bluetooth, I think this double free is a separate issue
> with the error handling, and the following patch should fix it.
>
> ---
> From: Rabin Vincent <rabin@xxxxxx>
> Subject: [PATCH] btusb, bpa10x: fix double frees on error paths
>
> Justin Mattock reported this double free in btusb:
>
> BUG kmalloc-16: Object already free
> -----------------------------------------------------------------------------
>
> INFO: Allocated in btusb_open+0x82/0x16f [btusb] age=3D0 cpu=3D1 pid=3D3763
> INFO: Freed in btusb_open+0x13d/0x16f [btusb] age=3D0 cpu=3D1 pid=3D3763
>
> This occurs because the urb's transfer buffer is being freed separately
> in the error path even though the URB_FREE_BUFFER transfer_flag is set
> on the urb.
>
> There are similar cases elsewhere in btusb and in bpa10x. Fix all of
> them by removing the additional kfree()'s.
I haven't verified it yet, but it looks like a good catch. Let me double
check this on my test machine. Weird that we never noticed this before
since I have been using the btusb driver for a very long time now.
Regards
Marcel
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