linux-toradex.git/drivers/usb/core/devio.c, branch tegra-11.2.6

usb: core: fix information leak to userland

2010-12-09T21:33:05+00:00

commit 886ccd4520064408ce5876cfe00554ce52ecf4a7 upstream.

Structure usbdevfs_connectinfo is copied to userland with padding byted
after "slow" field uninitialized.  It leads to leaking of contents of
kernel stack memory.

Signed-off-by: Vasiliy Kulikov 
Signed-off-by: Greg Kroah-Hartman

USB-BKL: Convert usb_driver ioctl to unlocked_ioctl

2010-08-10T21:35:35+00:00

And audit all the users. None needed the BKL.  That was easy
because there was only very few around.

Tested with allmodconfig build on x86-64

Signed-off-by: Andi Kleen 
Cc: Arnd Bergmann 
From: Andi Kleen

USB: make hcd.h public (drivers dependency)

2010-05-20T20:21:30+00:00

The usbcore headers: hcd.h and hub.h are shared between usbcore,
HCDs and a couple of other drivers (e.g. USBIP modules).
So, it makes sense to move them into a more public location and
to cleanup dependency of those modules on kernel internal headers.
This patch moves hcd.h from drivers/usb/core into include/linux/usb/

Signed-of-by: Eric Lescouet 
Cc: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: fix usbfs regression

2010-03-19T14:24:02+00:00

This patch (as1352) fixes a bug in the way isochronous input data is
returned to userspace for usbfs transfers.  The entire buffer must be
copied, not just the first actual_length bytes, because the individual
packets will be discontiguous if any of them are short.

Reported-by: Markus Rechberger 
Signed-off-by: Alan Stern 
CC: stable 
Signed-off-by: Greg Kroah-Hartman

USB: usbfs_snoop: add data logging back in

2010-03-02T22:54:37+00:00

Uses the new snoop function from commit 4c6e8971cbe0148085,
but includes the buffer data where appropriate, as before.

Signed-off-by: Chris Frey 
Signed-off-by: Greg Kroah-Hartman

USB: BKL removal from ioctl path of usbfs

2010-03-02T22:54:32+00:00

Total removal from the ioctl code path except for the outcall
to external modules. Locking is ensured by the normal locks
of usbfs.

Signed-off-by: Oliver Neukum 
Cc: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: Reduce scope of BKL in usb ioctl handling

2010-03-02T22:54:24+00:00

This pushes BKL down in ioctl handling and drops it
for some important ioctls

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

USB: Remove BKL from lseek implementations

2010-03-02T22:54:23+00:00

Replace it by
mutex_lock(&file->f_dentry->d_inode->i_mutex);
following the example of the generic method

Signed-off-by: Oliver Neukum 
Signed-off-by: Greg Kroah-Hartman

USB: Remove BKL from usbdev_open()

2010-03-02T22:54:22+00:00

Locking had long been changed making BKL redundant.
Simply remove it.

Signed-off-by: Oliver Neukum 
Cc: Alan Stern 
Signed-off-by: Greg Kroah-Hartman

USB: change locking for device-level autosuspend

2010-03-02T22:54:08+00:00

This patch (as1323) changes the locking requirements for
usb_autosuspend_device(), usb_autoresume_device(), and
usb_try_autosuspend_device().  This isn't a very important change;
mainly it's meant to make the locking more uniform.

The most tricky part of the patch involves changes to usbdev_open().
To avoid an ABBA locking problem, it was necessary to reduce the
region protected by usbfs_mutex.  Since that mutex now protects only
against simultaneous open and remove, this posed no difficulty -- its
scope was larger than necessary.

And it turns out that usbfs_mutex is no longer needed in
usbdev_release() at all.  The list of usbfs "ps" structures is now
protected by the device lock instead of by usbfs_mutex.

Signed-off-by: Alan Stern 
Signed-off-by: Greg Kroah-Hartman