On Thursday, July 25, 2013 5:12:46 am Alexander Motin wrote:
> Author: mav
> Date: Thu Jul 25 09:12:46 2013
> New Revision: 253644
> URL: http://svnweb.freebsd.org/changeset/base/253644
> 
> Log:
>   Add missing NULL check after malloc(M_NOWAIT).
>   
>   Submitted by:       Dmitry Luhtionov <dmitryluhtio...@gmail.com>
> 
> Modified:
>   head/sys/dev/ata/chipsets/ata-promise.c
> 
> Modified: head/sys/dev/ata/chipsets/ata-promise.c
> ==============================================================================
> --- head/sys/dev/ata/chipsets/ata-promise.c   Thu Jul 25 08:41:22 2013        
> (r253643)
> +++ head/sys/dev/ata/chipsets/ata-promise.c   Thu Jul 25 09:12:46 2013        
> (r253644)
> @@ -287,6 +287,10 @@ ata_promise_chipinit(device_t dev)
>           /* setup host packet controls */
>           hpkt = malloc(sizeof(struct ata_promise_sx4),
>                         M_ATAPCI, M_NOWAIT | M_ZERO);
> +         if (hpkt == NULL) {
> +             device_printf(dev, "Cannot allocate HPKT\n");
> +             goto failnfree;
> +         }
>           mtx_init(&hpkt->mtx, "ATA promise HPKT lock", NULL, MTX_DEF);
>           TAILQ_INIT(&hpkt->queue);
>           hpkt->busy = 0;

Why not use M_WAITOK here?

-- 
John Baldwin
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