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2f42b64ee7
In mmc_block_test, the debug_fs based read function handlers write to an arbitrary buffer which is given by any user. We add an access_ok check to verify that the address pointed by *buffer is not in kernel space. Only if the buffer is valid, do we continue the read handler. Backport reference: * Ignore changes from following upstream functions: - bkops_test_read - long_sequential_read_test_read, - long_sequential_write_test_read - new_req_notification_test_read Change-Id: I1413f71be13509a3b4e56b919cfbcbd9fcc9d2bd Signed-off-by: Lee Susman <lsusman@codeaurora.org> Signed-off-by: Maya Erez <merez@codeaurora.org> Signed-off-by: Adrian DC <radian.dc@gmail.com> |
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