Messages in this thread | | | Subject | Re: [PATCH] tpm: ibmvtpm: Avoid error message when process gets signal while waiting | From | Stefan Berger <> | Date | Thu, 29 Jul 2021 09:39:18 -0400 |
| |
On 7/28/21 5:50 PM, Jarkko Sakkinen wrote: > On Mon, Jul 26, 2021 at 11:00:51PM -0400, Stefan Berger wrote: >> On 7/26/21 10:42 PM, Jarkko Sakkinen wrote: >>> On Mon, Jul 12, 2021 at 12:25:05PM -0400, Stefan Berger wrote: >>>> From: Stefan Berger <stefanb@linux.ibm.com> >>>> >>>> When rngd is run as root then lots of these types of message will appear >>>> in the kernel log if the TPM has been configure to provide random bytes: >>>> >>>> [ 7406.275163] tpm tpm0: tpm_transmit: tpm_recv: error -4 >>>> >>>> The issue is caused by the following call that is interrupted while >>>> waiting for the TPM's response. >>>> >>>> sig = wait_event_interruptible(ibmvtpm->wq, >>>> !ibmvtpm->tpm_processing_cmd); >>>> >>>> The solution is to use wait_event() instead. >>> Why? >> So it becomes uninterruptible and these error messages go away. > We do not want to make a process uninterruptible. That would prevent > killing it.
I guess we'll have to go back to this one then: https://www.spinics.net/lists/linux-integrity/msg16741.html
Stefan
> > /Jarkko
| |