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Marcin Dziegielewski
f41d427cdd
lightnvm: prevent race condition on pblk remove
When we trigger nvm target remove during device hot unplug, there is a probability to hit a general protection fault. This is caused by use of nvm_dev thay may be freed from another (hot unplug) thread (in the nvm_unregister function). Introduce lock in nvme_ioctl_dev_remove function to prevent this situation. Signed-off-by: Marcin Dziegielewski <marcin.dziegielewski@intel.com> Reviewed-by: Javier González <javier@javigon.com> Signed-off-by: Matias Bjørling <mb@lightnvm.io> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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.
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