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(parent: fc242af) | 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 13:46:27 +0000 (06:46 -0700)
commit65ec64f28a882096d9976963e2ccefd85085fb1a
treea2ee29fc4a812999206f1a209e7a90d36d7053catree | snapshot
parentfc242af86d0713d7a1edd7b757d92fb03b3047e0commit | 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
Domain: System / Kernel;