On Thu, 2023-10-19 at 16:05 +0200, Juergen Repp wrote: > There is an issue related to this problem on github for tpm2-tss: > https://github.com/tpm2-software/tpm2-tss/issues/2691 ;(/dev/tpmrm0 > was used) > The error did occur after abbout 200 signing operations when a second > session was opened by a second process at the same time. > Kernel log: > [ 401.923826] tpm tpm0: tpm2_save_context: failed with a TPM error > 0x0901 > [ 401.925049] tpm tpm0: A TPM error (459) occurred flushing context I'm afraid that's a known problem with the Intel TSS: it saves the context, which will cause a gapping error if you keep it saved while doing other context requiring operations. The solutions are either to implement degapping in the kernel or persuade the Intel TSS not to save contexts unnecessarily. James
