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| author | Luis Henriques <luis.henriques@canonical.com> | 2015-09-17 16:01:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-10-03 13:51:39 +0200 |
| commit | 6abf903c8eb352a3705353789ac200d188466f16 (patch) | |
| tree | 9cd80e75e8e4d3888cfc99907a668d0b57f3ade0 /kernel/sysctl_binary.c | |
| parent | 92b52680751f95fa275c5a2dfb274de5c320d358 (diff) | |
zram: fix possible use after free in zcomp_create()
commit 3aaf14da807a4e9931a37f21e4251abb8a67021b upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/sysctl_binary.c')
0 files changed, 0 insertions, 0 deletions