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Date: Wed, 13 Aug 2025 09:13:41 +0800
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Subject: Re: [PATCH v5 07/22] tailq: fix lookup macro
To: David Marchand <david.marchand@redhat.com>, <dev@dpdk.org>
CC: <stable@dpdk.org>, Tyler Retzlaff <roretzla@linux.microsoft.com>, Neil
 Horman <nhorman@tuxdriver.com>
References: <20250619071037.37325-1-david.marchand@redhat.com>
 <20250723133157.159825-1-david.marchand@redhat.com>
 <20250723133157.159825-8-david.marchand@redhat.com>
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From: fengchengwen <fengchengwen@huawei.com>
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Acked-by: Chengwen Feng <fengchengwen@huawei.com>

On 7/23/2025 9:31 PM, David Marchand wrote:
> Doing arithmetic with the NULL pointer is undefined.
> 
> Caught by UBSan:
> 
> ../app/test/test_tailq.c:111:9: runtime error:
> 	member access within null pointer of type 'struct rte_tailq_head'
> 
> Fixes: f6b4f6c9c123 ("tailq: use a single cast macro")
> Cc: stable@dpdk.org
> 
> Signed-off-by: David Marchand <david.marchand@redhat.com>