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Matias Bjørling authored
If the LightNVM subsystem is not compiled into the kernel, and the null_blk device driver requests lightnvm to be initialized. The call to nvm_register fails and the null_add_dev function cleans up the initialization. However, at this point the null block device has already been added to the nullb_list and thus a second cleanup will occur when the function has returned, that leads to a double call to blk_cleanup_queue. Signed-off-by:
Matias Bjørling <m@bjorling.me> Signed-off-by:
Jens Axboe <axboe@fb.com>
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