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Date:   Sat, 15 Oct 2016 17:48:25 -0400 (EDT)
From:   David Miller <>
Subject: Re: [PATCH v2] vmxnet3: avoid assumption about invalid dma_pa in

From: Alexey Khoroshilov <>
Date: Sat, 15 Oct 2016 00:01:20 +0300

> vmxnet3_set_mc() checks new_table_pa returned by dma_map_single()
> with dma_mapping_error(), but even there it assumes zero is invalid pa
> (it assumes dma_mapping_error(...,0) returns true if new_table is NULL).
> The patch adds an explicit variable to track status of new_table_pa.
> Found by Linux Driver Verification project (
> v2: use "bool" and "true"/"false" for boolean variables.
> Signed-off-by: Alexey Khoroshilov <>


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