5c0fb9cb40
commitb97e8a2f71upstream. its_vlpi_prop_update() calls lpi_write_config() which obtains the mapping information for a VLPI without lock held. So it could race with its_vlpi_unmap(). Since all calls from its_irq_set_vcpu_affinity() require the same lock to be held, hoist the locking there instead of sprinkling the locking all over the place. This bug was discovered using Coverity Static Analysis Security Testing (SAST) by Synopsys, Inc. [ tglx: Use guard() instead of goto ] Fixes:015ec0386a("irqchip/gic-v3-its: Add VLPI configuration handling") Suggested-by: Marc Zyngier <maz@kernel.org> Signed-off-by: Hagar Hemdan <hagarhem@amazon.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org Reviewed-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20240531162144.28650-1-hagarhem@amazon.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.