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authorSergey Senozhatsky <sergey.senozhatsky@gmail.com>2016-12-07 14:44:31 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-07 17:10:00 -0800
commit5c7e9ccd91b90d87029261f8856294ee51934cab (patch)
tree5bb12cbd8f271f71c1a7141ca7d86916ab92d71a /tools
parentea5a9eff96fed8252f3a8c94a84959f981a93cae (diff)
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: 6566d1a32bf72 ("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>
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