linux-kernel - Re: [PATCH] tpm: ibmvtpm: fix error return code in tpm_ibmvtpm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 26 Nov 2020 05:35:15 +0200
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Wang Hai <wanghai38@...wei.com>, mpe@...erman.id.au,
        benh@...nel.crashing.org, paulus@...ba.org, peterhuewe@....de,
        jgg@...pe.ca, stefanb@...ux.ibm.com, nayna@...ux.ibm.com
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-integrity@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tpm: ibmvtpm: fix error return code in
 tpm_ibmvtpm_probe()

On Tue, 2020-11-24 at 21:52 +0800, Wang Hai wrote:
> Fix to return a negative error code from the error handling
> case instead of 0, as done elsewhere in this function.
> 
> Fixes: d8d74ea3c002 ("tpm: ibmvtpm: Wait for buffer to be set before
> proceeding")
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Wang Hai <wanghai38@...wei.com>

Provide a reasoning for -ETIMEOUT in the commit message.

/Jarkko

> ---
>  drivers/char/tpm/tpm_ibmvtpm.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/char/tpm/tpm_ibmvtpm.c
> b/drivers/char/tpm/tpm_ibmvtpm.c
> index 994385bf37c0..813eb2cac0ce 100644
> --- a/drivers/char/tpm/tpm_ibmvtpm.c
> +++ b/drivers/char/tpm/tpm_ibmvtpm.c
> @@ -687,6 +687,7 @@ static int tpm_ibmvtpm_probe(struct vio_dev
> *vio_dev,
>                                 ibmvtpm->rtce_buf != NULL,
>                                 HZ)) {
>                 dev_err(dev, "CRQ response timed out\n");
> +               rc = -ETIMEDOUT;
>                 goto init_irq_cleanup;
>         }
>