netdev - Re: [PATCH net] bnxt_en: Fix memory fault in bnxt_ethtool

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Date:   Thu, 19 Apr 2018 16:35:27 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     michael.chan@...adcom.com
Cc:     netdev@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH net] bnxt_en: Fix memory fault in bnxt_ethtool_init()

From: Michael Chan <michael.chan@...adcom.com>
Date: Thu, 19 Apr 2018 03:16:16 -0400

> From: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
> 
> In some firmware images, the length of BNX_DIR_TYPE_PKG_LOG nvram type
> could be greater than the fixed buffer length of 4096 bytes allocated by
> the driver.  This was causing HWRM_NVM_READ to copy more data to the buffer
> than the allocated size, causing general protection fault.
> 
> Fix the issue by allocating the exact buffer length returned by
> HWRM_NVM_FIND_DIR_ENTRY, instead of 4096.  Move the kzalloc() call
> into the bnxt_get_pkgver() function.
> 
> Fixes: 3ebf6f0a09a2 ("bnxt_en: Add installed-package firmware version reporting via Ethtool GDRVINFO")
> Signed-off-by: Vasundhara Volam <vasundhara-v.volam@...adcom.com>
> Signed-off-by: Michael Chan <michael.chan@...adcom.com>

Applied, thanks Michael.