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(parent: c94f31b) | patch
tee: shm: Potential NULL dereference calling tee_shm_register()
authorDan Carpenter <dan.carpenter@oracle.com>
Sat, 6 Jan 2018 09:22:30 +0000 (12:22 +0300)
committerJens Wiklander <jens.wiklander@linaro.org>
Tue, 9 Jan 2018 13:34:00 +0000 (14:34 +0100)
commit2490cdf6435b1d3cac0dbf710cd752487c67c296
treeafb63b0da6212dacd08ab4ec7b81922a99b9295etree | snapshot
parentc94f31b526fe658c25dd2d07c90486a85437f01ccommit | diff
tee: shm: Potential NULL dereference calling tee_shm_register()

get_user_pages_fast() can return zero in certain error paths.  We should
handle that or else it means we accidentally return ERR_PTR(0) which is
NULL instead of an error pointer.  The callers are not expecting that
and will crash with a NULL dereference.

Fixes: 033ddf12bcf5 ("tee: add register user memory")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
drivers/tee/tee_shm.c diff | blob | history
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