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b4ecc25965
commitc22ee5284cupstream. In VM_MAP_PUT_PAGES case, we should put pages and free array in vfree. But we missed to set area->nr_pages in vmap(). So we would fail to put pages in __vunmap() because area->nr_pages = 0. Link: https://lkml.kernel.org/r/20210107123541.39206-1-linmiaohe@huawei.com Fixes:b944afc9d6("mm: add a VM_MAP_PUT_PAGES flag for vmap") Signed-off-by: Shijie Luo <luoshijie1@huawei.com> Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 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.