Re: [PATCH] scsi: scsi_debug: Fix sdebug_blk_mq_poll() in_use_bm bitmap use

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To: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH] scsi: scsi_debug: Fix sdebug_blk_mq_poll() in_use_bm bitmap use
From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Date: Wed, 06 Apr 2022 22:05:27 -0400
Cc: linux-scsi@xxxxxxxxxxxxxxx, "Martin K . Petersen" <martin.petersen@xxxxxxxxxx>, Douglas Gilbert <dgilbert@xxxxxxxxxxxx>
In-reply-to: <20220404045547.579887-1-damien.lemoal@opensource.wdc.com> (Damien Le Moal's message of "Mon, 4 Apr 2022 13:55:47 +0900")
Organization: Oracle Corporation

Damien,

> The in_use_bm bitmap of struct sdebug_queue should be accessed under
> protection of the qc_lock spinlock. Make sure that this lock is taken
> before calling find_first_bit() at the beginning of the function
> sdebug_blk_mq_poll().

Applied to 5.18/scsi-fixes, thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering

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References:
- [PATCH] scsi: scsi_debug: Fix sdebug_blk_mq_poll() in_use_bm bitmap use
  - From: Damien Le Moal

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