From: bugzilla-daemon@bugzilla.kernel.org
To: linux-scsi@vger.kernel.org
Subject: [Bug 209177] mpt2sas_cm0: failure at drivers/scsi/mpt3sas/mpt3sas_scsih.c:10791/_scsih_probe()!
Date: Wed, 30 Sep 2020 19:03:56 +0000 [thread overview]
Message-ID: <bug-209177-11613-WZq3yVtVNs@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-209177-11613@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=209177
--- Comment #3 from sun.nagarajan@gmail.com ---
(2020-09-30): Suganath Prabu Subramani suggested the following:
From log, I could see that the HBA queue depth is very high "32455" as
shown below.
[ 11.465416] mpt2sas_cm0: hba queue depth(32455), max chains per io(128).
In this patch "https://patchwork.kernel.org/patch/11505139/" driver is
allocating the DMA-able memory for RDPQ's in sets of 16 reply queues using
limitation of Ventura series controller.
With 32455 queue depth and above patch, Driver may request a large DMA-able
memory where the kernel may fail to allocate.
To confirm this, Please try by tuning the queue depth to 8000/10000 using the
module parameter "mpt3sas.max_queue_depth=10000".
With the same unmodified 5.8.12 kernel, boot completed with no errors.
Attaching dmesg.mpt3sas.max_queue_depth.20200930
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next prev parent reply other threads:[~2020-09-30 19:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-209177-11613@https.bugzilla.kernel.org/>
2020-09-29 19:59 ` [Bug 209177] mpt2sas_cm0: failure at drivers/scsi/mpt3sas/mpt3sas_scsih.c:10791/_scsih_probe()! bugzilla-daemon
2020-09-29 20:00 ` bugzilla-daemon
2020-09-30 19:03 ` bugzilla-daemon [this message]
2020-09-30 19:04 ` bugzilla-daemon
2021-04-11 7:43 ` bugzilla-daemon
2022-01-03 0:42 ` bugzilla-daemon
2023-10-09 8:29 ` bugzilla-daemon
2024-06-22 11:32 ` bugzilla-daemon
2024-06-22 11:49 ` bugzilla-daemon
2024-07-02 8:09 ` bugzilla-daemon
2024-07-02 8:55 ` bugzilla-daemon
2024-07-02 9:45 ` bugzilla-daemon
2024-09-12 10:54 ` bugzilla-daemon
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