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(parent: 06c239a) | patch
chardev: add additional check for minor range overlap
authorChengguang Xu <cgxu519@gmx.com>
Fri, 15 Feb 2019 12:27:11 +0000 (20:27 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 31 May 2019 13:47:31 +0000 (06:47 -0700)
commited3f381e10ff94039b1a7174d018424e226e36e4
treef964a1db3671a138d749ca681b363659ad4f9967tree
parent06c239a1a0361582c350e83ab46b6d98acaa3e9acommit | diff
chardev: add additional check for minor range overlap

[ Upstream commit de36e16d1557a0b6eb328bc3516359a12ba5c25c ]

Current overlap checking cannot correctly handle
a case which is baseminor < existing baseminor &&
baseminor + minorct > existing baseminor + minorct.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/char_dev.c diff | blob | history
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