Re: linux-3.7.1: kmemleak reports in comm "usb-storage"?

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On Sat, 12 Jan 2013, Martin Mokrejs wrote:

> Alan Stern wrote:
> > On Fri, 11 Jan 2013, Martin Mokrejs wrote:
> > 
> >> Hi,
> >>   I am not sure how should I interpret this but I am attaching the whole kmemleak file
> >> I have after 
> >> # w
> >>  23:02:23 up 2 days,  2:43, 16 users,  load average: 2.17, 1.85, 1.51
> >> [cut]
> >>
> >>   I have several SATA drives connected over USB 2 and 3 (and mounted) but am not
> >> accessing them.
> > 
> > Whether or not the drives are being accessed probably doesn't matter
> > much.  The mere fact that they are connected can make a difference.  
> > Does kmemleak report the same problems after the drives are unplugged?  
> > Does the number of leaked memory regions increase if you plug in and 
> > unplug a drive repeatedly?
> 
> I just plugged in one drive, unconnected, a re-connected back again.
> Right after that the kmemleak file did not show any changes but that is
> probably updated by a background process? But, after some minutes, here the
> are few more! I am attaching the diff showing the timestamps.
> 
> Please note that the number increased once while do physical (dis)connections
> happened meanwhile (unless that can be explained by the time lag of the background
> scanning before it reports the problem):
> 
> [81036.084077] kmemleak: 17 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
> [139512.014429] kmemleak: 11 new suspected memory leaks (see /sys/kernel/debug/kmemleak)

Don't worry about what kmemleak says when the drives are plugged in.  
See what it says when all the USB drives are unplugged.  That's what 
matters.

Alan Stern

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