From: <dan.j.williams@intel.com>
To: "Cheatham, Benjamin" <benjamin.cheatham@amd.com>,
Dan Williams <dan.j.williams@intel.com>, <dave.jiang@intel.com>
Cc: <linux-cxl@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<Smita.KoralahalliChannabasappa@amd.com>,
<alison.schofield@intel.com>, <terry.bowman@amd.com>,
<alejandro.lucero-palau@amd.com>, <linux-pci@vger.kernel.org>,
<Jonathan.Cameron@huawei.com>,
Alejandro Lucero <alucerop@amd.com>
Subject: Re: [PATCH 4/6] cxl/mem: Convert devm_cxl_add_memdev() to scope-based-cleanup
Date: Thu, 4 Dec 2025 12:50:03 -0800 [thread overview]
Message-ID: <6931f3fbae919_1e0210062@dwillia2-mobl4.notmuch> (raw)
In-Reply-To: <4e4e19e2-8aff-44a1-ba4d-2a4519745a3d@amd.com>
Cheatham, Benjamin wrote:
[..]
> > - rc = devm_add_action_or_reset(host, cxl_memdev_unregister, cxlmd);
> > + rc = devm_add_action_or_reset(host, cxl_memdev_unregister,
> > + no_free_ptr(cxlmd));
> > if (rc)
> > return ERR_PTR(rc);
> > return cxlmd;
>
> Isn't cxlmd zeroed out by no_free_ptr() above? I think what needs to happen here is:
>
> rc = devm_add_action_or_reset(host, cxl_memdev_unregister, cxlmd);
> if (rc) {
> no_free_ptr(cxlmd);
> return ERR_PTR(rc);
> }
>
> return_ptr(cxlmd);
>
> Looking ahead, this gets nullified in patch 6/6 so I guess it's only an issue if
> someone is in the middle of a bisect (or doesn't pick up patch 6/6 for some reason).
Good catch! ...and no, I should not leave that bisect problem in the set.
Will pull the cxl_memdev_autoremove() change forward for that.
next prev parent reply other threads:[~2025-12-04 20:50 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-04 2:21 [PATCH 0/6] cxl: Initialization reworks in support Soft Reserve Recovery and Accelerator Memory Dan Williams
2025-12-04 2:21 ` [PATCH 1/6] cxl/mem: Fix devm_cxl_memdev_edac_release() confusion Dan Williams
2025-12-04 16:48 ` Dave Jiang
2025-12-04 20:15 ` dan.j.williams
2025-12-04 19:09 ` Cheatham, Benjamin
2025-12-05 2:46 ` Alison Schofield
2025-12-08 14:19 ` Alejandro Lucero Palau
2025-12-15 21:11 ` dan.j.williams
2025-12-08 19:20 ` Shiju Jose
2025-12-15 12:00 ` Jonathan Cameron
2025-12-04 2:21 ` [PATCH 2/6] cxl/mem: Arrange for always-synchronous memdev attach Dan Williams
2025-12-04 16:58 ` Dave Jiang
2025-12-04 19:09 ` Cheatham, Benjamin
2025-12-05 2:49 ` Alison Schofield
2025-12-15 12:08 ` Jonathan Cameron
2025-12-04 2:21 ` [PATCH 3/6] cxl/port: Arrange for always synchronous endpoint attach Dan Williams
2025-12-04 18:36 ` Dave Jiang
2025-12-04 19:09 ` Cheatham, Benjamin
2025-12-05 3:36 ` Alison Schofield
2025-12-15 12:09 ` Jonathan Cameron
2025-12-04 2:21 ` [PATCH 4/6] cxl/mem: Convert devm_cxl_add_memdev() to scope-based-cleanup Dan Williams
2025-12-04 18:58 ` Dave Jiang
2025-12-04 19:09 ` Cheatham, Benjamin
2025-12-04 20:50 ` dan.j.williams [this message]
2025-12-05 3:37 ` Alison Schofield
2025-12-04 2:21 ` [PATCH 5/6] cxl/mem: Drop @host argument to devm_cxl_add_memdev() Dan Williams
2025-12-04 19:09 ` Cheatham, Benjamin
2025-12-04 20:02 ` Dave Jiang
2025-12-05 3:38 ` Alison Schofield
2025-12-15 12:15 ` Jonathan Cameron
2025-12-04 2:21 ` [PATCH 6/6] cxl/mem: Introduce a memdev creation ->probe() operation Dan Williams
2025-12-04 19:10 ` Cheatham, Benjamin
2025-12-04 21:11 ` dan.j.williams
2025-12-04 22:02 ` dan.j.williams
2025-12-04 22:15 ` Cheatham, Benjamin
2025-12-04 20:03 ` Dave Jiang
2025-12-05 15:15 ` [PATCH 0/6] cxl: Initialization reworks in support Soft Reserve Recovery and Accelerator Memory Alejandro Lucero Palau
2025-12-05 21:17 ` dan.j.williams
2025-12-08 14:04 ` Alejandro Lucero Palau
2025-12-09 7:53 ` dan.j.williams
2025-12-08 17:04 ` Alejandro Lucero Palau
2025-12-15 23:29 ` dan.j.williams
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