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| author | Colin Ian King <colin.king@canonical.com> | 2017-12-22 17:51:50 +0000 |
|---|---|---|
| committer | Victor Chong <victor.chong@linaro.org> | 2018-02-21 15:40:49 +0000 |
| commit | ed384bc362644588e8d4594ea1614ad4bc3e1feb (patch) | |
| tree | d8aa4a54fdd4b6fc14963c9a88af44155d90c4dd /fs/btrfs/tree-log.c | |
| parent | 18fee2106b39559a1000094df83566482d793a28 (diff) | |
BACKPORT: tee: shm: don't put_page on null shm->pages
In the case that shm->pages fails to allocate, the current exit
error path will try to put_page on a null shm->pages and cause
a null pointer dereference when accessing shm->pages[n]. Fix this
by only performing the put_page and kfree on shm->pages if it
is not null.
Detected by CoverityScan, CID#1463283 ("Dereference after null check")
Change-Id: I4874df9fce449834fdf9064c718c2d2517f69bc4
Fixes: 033ddf12bcf5 ("tee: add register user memory")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
(cherry picked from commit c94f31b526fe658c25dd2d07c90486a85437f01c)
Signed-off-by: Victor Chong <victor.chong@linaro.org>
Diffstat (limited to 'fs/btrfs/tree-log.c')
0 files changed, 0 insertions, 0 deletions