block: check minor range in device_add_disk()
mainline inclusion from mainline-v5.17-rc1 commit e338924b category: bugfix bugzilla: 188733 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=e338924bd05d6e71574bc13e310c89e10e49a8a5 ---------------------------------------- ioctl(fd, LOOP_CTL_ADD, 1048576) causes sysfs: cannot create duplicate filename '/dev/block/7:0' message because such request is treated as if ioctl(fd, LOOP_CTL_ADD, 0) due to MINORMASK == 1048575. Verify that all minor numbers for that device fit in the minor range. Reported-by:wangyangbo <wangyangbo@uniontech.com> Signed-off-by:
Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Reviewed-by:
Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/b1b19379-23ee-5379-0eb5-94bf5f79f1b4@i-love.sakura.ne.jp Signed-off-by:
Jens Axboe <axboe@kernel.dk> conflict: block/genhd.c Signed-off-by:
Zhong Jinghua <zhongjinghua@huawei.com> Signed-off-by:
Li Nan <linan122@huawei.com>
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