linux-kernel - Re: [PATCH][next][V4] tpm: remove kmalloc failure error message

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Message-ID: <aBJAwAg_92fZ-how@kernel.org>
Date: Wed, 30 Apr 2025 18:24:48 +0300
From: Jarkko Sakkinen <jarkko@...nel.org>
To: Colin Ian King <colin.i.king@...il.com>
Cc: Peter Huewe <peterhuewe@....de>, Jason Gunthorpe <jgg@...pe.ca>,
	linux-integrity@...r.kernel.org, kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next][V4] tpm: remove kmalloc failure error message

On Wed, Apr 30, 2025 at 09:34:35AM +0100, Colin Ian King wrote:
> The kmalloc failure message is just noise. Remove it and
> replace -EFAULT with -ENOMEM as standard for out of memory
> allocation error returns.
> 
> Signed-off-by: Colin Ian King <colin.i.king@...il.com>
> ---
> V1: remove trailing space after \n
> V2: remove entire message, originally just removed a trailing space
> V3: replace -EFAULT with -ENOMEM
> V4: send correct fix for V3, actually return -ENOMEM
> ---
> 
>  drivers/char/tpm/eventlog/tpm1.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/char/tpm/eventlog/tpm1.c b/drivers/char/tpm/eventlog/tpm1.c
> index 12ee42a31c71..e7913b2853d5 100644
> --- a/drivers/char/tpm/eventlog/tpm1.c
> +++ b/drivers/char/tpm/eventlog/tpm1.c
> @@ -257,11 +257,8 @@ static int tpm1_ascii_bios_measurements_show(struct seq_file *m, void *v)
>  	    (unsigned char *)(v + sizeof(struct tcpa_event));
>  
>  	eventname = kmalloc(MAX_TEXT_EVENT, GFP_KERNEL);
> -	if (!eventname) {
> -		printk(KERN_ERR "%s: ERROR - No Memory for event name\n ",
> -		       __func__);
> -		return -EFAULT;
> -	}
> +	if (!eventname)
> +		return -ENOMEM;
>  
>  	/* 1st: PCR */
>  	seq_printf(m, "%2d ", do_endian_conversion(event->pcr_index));
> -- 
> 2.49.0
> 

Ya, I think this make sense.

Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>

BR, Jarkko