[PATCH] tpm: add check after commands attribs tab allocation

devm_kcalloc() can fail and return NULL so we need to check for that.

Fixes: 58472f5cd4f6f ("tpm: validate TPM 2.0 commands") Signed-off-by: Tadeusz Struk tadeusz.struk@intel.com --- drivers/char/tpm/tpm2-cmd.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c index ba9acae83bff..5817dfe5c5d2 100644 --- a/drivers/char/tpm/tpm2-cmd.c +++ b/drivers/char/tpm/tpm2-cmd.c @@ -939,6 +939,10 @@ static int tpm2_get_cc_attrs_tbl(struct tpm_chip *chip)

chip->cc_attrs_tbl = devm_kcalloc(&chip->dev, 4, nr_commands, GFP_KERNEL); + if (!chip->cc_attrs_tbl) { + rc = -ENOMEM; + goto out; + }

rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_GET_CAPABILITY); if (rc)