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Hui Zhu
af71c2b88c
[ Upstream commitc55dd3b46c] find_vm_area() can return NULL if the given address is not a valid vmalloc area. Check the return value before dereferencing it to avoid a kernel crash. Link: https://lore.kernel.org/20260529014130.671291-1-hui.zhu@linux.dev Fixes:121e6f3258("mm/vmalloc: hugepage vmalloc mappings") Signed-off-by: Hui Zhu <zhuhui@kylinos.cn> Reviewed-by: Dev Jain <dev.jain@arm.com> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: Nicholas Piggin <npiggin@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.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.