From: Damien Le Moal <dlemoal@kernel.org>
To: Yang Xiuwei <yangxiuwei@kylinos.cn>,
martin.petersen@oracle.com,
James.Bottomley@HansenPartnership.com
Cc: hare@suse.de, tom.leiming@gmail.com, p.raghav@samsung.com,
sw.prabhu6@gmail.com, linux-scsi@vger.kernel.org
Subject: Re: [PATCH v1 3/4] scsi: sd: fix special_vec mempool leak when scsi_alloc_sgtables() fails
Date: Sat, 27 Jun 2026 06:57:06 +0900 [thread overview]
Message-ID: <c3c093ab-88c9-4a71-89dd-33ee69db1823@kernel.org> (raw)
In-Reply-To: <20260623100159.4018066-4-yangxiuwei@kylinos.cn>
On 6/23/26 19:01, Yang Xiuwei wrote:
> sd_set_special_bvec() allocates a special payload page for UNMAP and
> WRITE SAME commands. If scsi_alloc_sgtables() fails afterward in
> sd_setup_unmap_cmnd() or sd_setup_write_same{10,16}_cmnd(), the SCSI
> midlayer does not call uninit_command() because RQF_DONTPREP is not
> set yet, leaking the page.
>
> Call sd_uninit_command() on error, and clear RQF_SPECIAL_PAYLOAD after
> freeing the page.
>
> Signed-off-by: Yang Xiuwei <yangxiuwei@kylinos.cn>
This needs a Fixes tag I think.
But otherwise looks OK to me.
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
--
Damien Le Moal
Western Digital Research
next prev parent reply other threads:[~2026-06-26 21:57 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-23 10:01 [PATCH v1 0/4] scsi: sd: fix probe error cleanup, special_vec leak and sd_done() sense gate Yang Xiuwei
2026-06-23 10:01 ` [PATCH v1 1/4] scsi: sd: fix error handling in sd_probe() after large pool creation failure Yang Xiuwei
2026-06-26 21:52 ` Damien Le Moal
2026-06-23 10:01 ` [PATCH v1 2/4] scsi: sd: unify sd_probe() error cleanup through out_put Yang Xiuwei
2026-06-26 21:54 ` Damien Le Moal
2026-06-29 1:16 ` Yang Xiuwei
2026-06-29 5:03 ` Damien Le Moal
2026-06-23 10:01 ` [PATCH v1 3/4] scsi: sd: fix special_vec mempool leak when scsi_alloc_sgtables() fails Yang Xiuwei
2026-06-23 10:20 ` sashiko-bot
2026-06-26 21:57 ` Damien Le Moal [this message]
2026-06-23 10:01 ` [PATCH v1 4/4] scsi: sd: fix sd_done() sense handling condition Yang Xiuwei
2026-06-23 10:18 ` sashiko-bot
2026-06-26 22:07 ` Damien Le Moal
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