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authorLuis Henriques <luis.henriques@canonical.com>2015-09-17 16:01:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-17 21:16:07 -0700
commit3aaf14da807a4e9931a37f21e4251abb8a67021b (patch)
treec51131105c74598a587d4bfddc7b4b4d2df5bbb4 /mm/kasan
parent72714841b705a5b9bccf37ee85a62352bee3a3ef (diff)
zram: fix possible use after free in zcomp_create()
zcomp_create() verifies the success of zcomp_strm_{multi,single}_create() through comp->stream, which can potentially be pointing to memory that was freed if these functions returned an error. While at it, replace a 'ERR_PTR(-ENOMEM)' by a more generic 'ERR_PTR(error)' as in the future zcomp_strm_{multi,siggle}_create() could return other error codes. Function documentation updated accordingly. Fixes: beca3ec71fe5 ("zram: add multi stream functionality") Signed-off-by: Luis Henriques <luis.henriques@canonical.com> Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan')
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