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d3bb89ea9c
After converting selinux to VMA heap check helper, the gcl triggers an execheap SELinux denial, which is caused by a changed logic check. Previously selinux only checked that the VMA range was within the VMA heap range, and the implementation checks the intersection between the two ranges, but the corner case (vm_end=start_brk, brk=vm_start) isn't handled correctly. Since commit11250fd12e("mm: factor out VMA stack and heap checks") was only a function extraction, it seems that the issue was introduced by commit0db0c01b53("procfs: fix /proc/<pid>/maps heap check"). Let's fix above corner cases, meanwhile, correct the wrong indentation of the stack and heap check helpers. Fixes:11250fd12e("mm: factor out VMA stack and heap checks") Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reported-by: Ondrej Mosnacek <omosnace@redhat.com> Closes: https://lore.kernel.org/selinux/CAFqZXNv0SVT0fkOK6neP9AXbj3nxJ61JAY4+zJzvxqJaeuhbFw@mail.gmail.com/ Tested-by: Ondrej Mosnacek <omosnace@redhat.com> Link: https://lkml.kernel.org/r/20231207152525.2607420-1-wangkefeng.wang@huawei.com Cc: David Hildenbrand <david@redhat.com> Cc: Paul Moore <paul@paul-moore.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephen Smalley <stephen.smalley.work@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.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.