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Johan Hovold aafb00a977 USB: yurex: fix NULL-derefs on disconnect 
The driver was using its struct usb_interface pointer as an inverted
disconnected flag, but was setting it to NULL without making sure all
code paths that used it were done with it.

Before commit ef61eb43ad ("USB: yurex: Fix protection fault after
device removal") this included the interrupt-in completion handler, but
there are further accesses in dev_err and dev_dbg statements in
yurex_write() and the driver-data destructor (sic!).

Fix this by unconditionally stopping also the control URB at disconnect
and by using a dedicated disconnected flag.

Note that we need to take a reference to the struct usb_interface to
avoid a use-after-free in the destructor whenever the device was
disconnected while the character device was still open.

Fixes: aadd6472d9 ("USB: yurex.c: remove dbg() usage")
Fixes: 45714104b9 ("USB: yurex.c: remove err() usage")
Cc: stable <stable@vger.kernel.org>     # 3.5: ef61eb43ad
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20191009153848.8664-6-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-10 14:24:06 +02:00
arch ARM: dts: sunxi: Revert phy-names removal for ECHI and OHCI 2019-10-04 14:37:03 +02:00
block
certs
crypto
Documentation dt-bindings: usb: Bring back phy-names 2019-10-04 14:37:03 +02:00
drivers USB: yurex: fix NULL-derefs on disconnect 2019-10-10 14:24:06 +02:00
fs
include driver core: platform: Add platform_get_irq_byname_optional() 2019-10-07 12:52:44 +02:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.