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[ Upstream commit2af0c5ffad] If IRQ occurs between calling request_irq() and mv_u3d_eps_init(), then null pointer dereference occurs since u3d->eps[] wasn't initialized yet but used in mv_u3d_nuke(). The patch puts registration of the interrupt handler after initializing of neccesery data. Found by Linux Driver Verification project (linuxtesting.org). Fixes:90fccb529d("usb: gadget: Gadget directory cleanup - group UDC drivers") Acked-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru> Link: https://lore.kernel.org/r/20210818141247.4794-1-lutovinova@ispras.ru Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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.