On Mon, Sep 29, 2025 at 10:48:24PM +0300, Jarkko Sakkinen wrote:
From: Jarkko Sakkinen <[email protected]>
Using -EFAULT as the tpm_ret_to_err() fallback error code causes makes it
incompatible on how trusted keys transmute TPM return codes.
Change the fallback as -EPERM in order to gain compatibility with trusted
keys. In addition, map TPM_RC_HASH to -EINVAL in order to be compatible
with tpm2_seal_trusted() return values.
Signed-off-by: Jarkko Sakkinen <[email protected]>
---
v3:
- Removed fixes tag as it hardly categorizes as a bug fix.
v2:
- Split trusted_tpm2 change to a separate patch.
---
include/linux/tpm.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
LGTM now!
Reviewed-by: Stefano Garzarella <[email protected]>
diff --git a/include/linux/tpm.h b/include/linux/tpm.h
index fc7df87dfb9a..51846317d662 100644
--- a/include/linux/tpm.h
+++ b/include/linux/tpm.h
@@ -453,8 +453,10 @@ static inline ssize_t tpm_ret_to_err(ssize_t ret)
return 0;
case TPM2_RC_SESSION_MEMORY:
return -ENOMEM;
+ case TPM2_RC_HASH:
+ return -EINVAL;
default:
- return -EFAULT;
+ return -EPERM;
}
}
--
2.39.5
