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linux/drivers/block/zram
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Sergey Senozhatsky 5c7e9ccd91 zram: restrict add/remove attributes to root only 
zram hot_add sysfs attribute is a very 'special' attribute - reading
from it creates a new uninitialized zram device.  This file, by a
mistake, can be read by a 'normal' user at the moment, while only root
must be able to create a new zram device, therefore hot_add attribute
must have S_IRUSR mode, not S_IRUGO.

[akpm@linux-foundation.org: s/sence/sense/, reflow comment to use 80 cols]
Fixes: 6566d1a32b ("zram: add dynamic device add/remove functionality")
Link: http://lkml.kernel.org/r/20161205155845.20129-1-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reported-by: Steven Allen <steven@stebalien.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org>    [4.2+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
History 2016-12-07 17:10:00 -08:00
..
Kconfig zram: delete custom lzo/lz4 2016-07-26 16:19:19 -07:00
Makefile zram: delete custom lzo/lz4 2016-07-26 16:19:19 -07:00
zcomp.c zram: drop gfp_t from zcomp_strm_alloc() 2016-07-26 16:19:19 -07:00
zcomp.h zram: delete custom lzo/lz4 2016-07-26 16:19:19 -07:00
zram_drv.c zram: restrict add/remove attributes to root only 2016-12-07 17:10:00 -08:00
zram_drv.h zram: use crypto api to check alg availability 2016-07-26 16:19:19 -07:00