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When the ->init_lock is released in zram_reset_device(), disksize_store() can come in and try to allocate meta, but zram_reset_device() is freeing free meta, so cause races. Link: https://lore.kernel.org/linux-block/20210927163805.808907-1-mcgrof@kernel.org/T/#mc617f865a3fa2778e40f317ddf48f6447c20c073 Reported-by: Luis Chamberlain <mcgrof@kernel.org> Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Ming Lei <ming.lei@redhat.com> Acked-by: Minchan Kim <minchan@kernel.org> Link: https://lore.kernel.org/r/20211025025426.2815424-2-ming.lei@redhat.com [cyberknight777: backport to 4.14] Signed-off-by: Cyber Knight <cyberknight755@gmail.com> Signed-off-by: azrim <mirzaspc@gmail.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.