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Re: [PATCH 0/2] xen/scsiback: fix command-tag handling on pre-completion error paths
- To: Michael Bommarito <michael.bommarito@xxxxxxxxx>
- From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
- Date: Mon, 15 Jun 2026 22:00:45 -0400
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- Cc: Juergen Gross <jgross@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, stable@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- Delivery-date: Tue, 16 Jun 2026 02:01:17 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Michael,
> scsiback_get_pend_req() hands a pvSCSI frontend request a session tag
> and a zeroed se_cmd. Two error paths that run before the command
> completes through the target core mishandle that command and leak (or,
> in one case, underflow) the tag.
Applied to 7.2/scsi-staging, thanks!
--
Martin K. Petersen
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