https://github.com/torvalds/linux
Revision 3aaf14da807a4e9931a37f21e4251abb8a67021b authored by Luis Henriques on 17 September 2015, 23:01:40 UTC, committed by Linus Torvalds on 18 September 2015, 04:16:07 UTC
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>
1 parent 7271484
History
Tip revision: 3aaf14da807a4e9931a37f21e4251abb8a67021b authored by Luis Henriques on 17 September 2015, 23:01:40 UTC
zram: fix possible use after free in zcomp_create()
Tip revision: 3aaf14d
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