tree e052e8beacb8578b588a2ab84990d70593b8e496
parent d1bd4a792d3961a04e6154118816b00167aad91a
author Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> 1497951482 +0200
committer James Morris <james.l.morris@oracle.com> 1499384964 +1000

tpm: fix a kernel memory leak in tpm-sysfs.c

While cleaning up sysfs callback that prints EK we discovered a kernel
memory leak. This commit fixes the issue by zeroing the buffer used for
TPM command/response.

The leak happen when we use either tpm_vtpm_proxy, tpm_ibmvtpm or
xen-tpmfront.

Cc: stable@vger.kernel.org
Fixes: 0883743825e3 ("TPM: sysfs functions consolidation")
Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>