From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: linux-scsi@vger.kernel.org, James Smart <jsmart2021@gmail.com>
Cc: "Martin K . Petersen" <martin.petersen@oracle.com>,
Justin Tee <justin.tee@broadcom.com>
Subject: Re: [PATCH][REPOST] lpfc: Fix bad memory access during VPD DUMP mailbox command
Date: Wed, 28 Apr 2021 23:18:48 -0400 [thread overview]
Message-ID: <161966630051.16262.11900505953215510836.b4-ty@oracle.com> (raw)
In-Reply-To: <20210421234511.102206-1-jsmart2021@gmail.com>
On Wed, 21 Apr 2021 16:45:11 -0700, James Smart wrote:
> The dump command for reading a region passes a requested read length
> specified in words (4byte units). The response overwrites the same
> field with the actual number of bytes read.
>
> The mailbox handler for DUMP which reads VPD data (region 23) is
> treating the response field as if it were still a word_cnt, thus
> multiplying it by 4 to set the read's "length". Given the read value
> was calculated based on the size of the read buffer, the longer
> response length runs off the end of the buffer.
>
> [...]
Applied to 5.13/scsi-fixes, thanks!
[1/1] lpfc: Fix bad memory access during VPD DUMP mailbox command
https://git.kernel.org/mkp/scsi/c/e4ec10228fdf
--
Martin K. Petersen Oracle Linux Engineering
prev parent reply other threads:[~2021-04-29 3:19 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-21 23:45 [PATCH][REPOST] lpfc: Fix bad memory access during VPD DUMP mailbox command James Smart
2021-04-27 3:07 ` Martin K. Petersen
2021-04-29 3:18 ` Martin K. Petersen [this message]
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