From: Farhan Ali <alifm@linux.ibm.com>
To: Niklas Schnelle <schnelle@linux.ibm.com>,
Gerd Bayer <gbayer@linux.ibm.com>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Benjamin Block <bblock@linux.ibm.com>,
Julian Ruess <julianr@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Ramesh Errabolu <ramesh@linux.ibm.com>,
Tobias Schumacher <ts@linux.ibm.com>,
Halil Pasic <pasic@linux.ibm.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 2/4] s390/pci: Fix missing device lock in zpci_report_status()
Date: Thu, 17 Sep 2026 10:52:03 -0700 [thread overview]
Message-ID: <55d0fe12-64c9-47bc-ae40-73ea773a5a06@linux.ibm.com> (raw)
In-Reply-To: <20260916-fix_zpci_report_status_pdev_leak-v3-2-61a2f980e71d@linux.ibm.com>
On 9/16/2026 8:14 AM, Niklas Schnelle wrote:
> When pdev is non-NULL, zpci_report_status() accesses the device's driver.
> To get a consistent state matching the recovery, the device lock needs to
> be held. Do so by expanding the existing device lock critical section.
>
> The lock only needs to be held when the pdev is non-NULL, so extract
> the pdev-specific reporting into a helper function which also adds a
> lockdep assertion to detect calls without the device lock held.
>
> Cc:stable@vger.kernel.org
> Fixes: 4ec6054e7321 ("s390/pci: Report PCI error recovery results via SCLP")
> Signed-off-by: Niklas Schnelle<schnelle@linux.ibm.com>
> ---
> arch/s390/pci/pci_event.c | 2 +-
> arch/s390/pci/pci_report.c | 21 +++++++++++++++------
> 2 files changed, 16 insertions(+), 7 deletions(-)
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
next prev parent reply other threads:[~2026-09-17 17:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-16 15:14 [PATCH v3 0/4] s390/pci: Fix some zpci_report_status() issues Niklas Schnelle
2026-09-16 15:14 ` [PATCH v3 1/4] s390/pci: Fix leak of struct pci_dev reference in zpci_report_status() Niklas Schnelle
2026-09-17 17:51 ` Farhan Ali
2026-09-18 8:17 ` Benjamin Block
2026-09-18 8:19 ` Niklas Schnelle
2026-09-18 8:20 ` Benjamin Block
2026-09-18 8:37 ` Benjamin Block
2026-09-16 15:14 ` [PATCH v3 2/4] s390/pci: Fix missing device lock " Niklas Schnelle
2026-09-17 17:52 ` Farhan Ali [this message]
2026-09-18 8:26 ` Benjamin Block
2026-09-16 15:14 ` [PATCH v3 3/4] s390/pci: Report SCLP status on error events when no pdev is associated Niklas Schnelle
2026-09-17 18:06 ` Farhan Ali
2026-09-18 8:32 ` Benjamin Block
2026-09-16 15:14 ` [PATCH v3 4/4] s390/pci: Don't report recovery success on skipped recovery Niklas Schnelle
2026-09-17 18:08 ` Farhan Ali
2026-09-18 8:34 ` Benjamin Block
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=55d0fe12-64c9-47bc-ae40-73ea773a5a06@linux.ibm.com \
--to=alifm@linux.ibm.com \
--cc=agordeev@linux.ibm.com \
--cc=bblock@linux.ibm.com \
--cc=borntraeger@linux.ibm.com \
--cc=gbayer@linux.ibm.com \
--cc=gerald.schaefer@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=julianr@linux.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=mjrosato@linux.ibm.com \
--cc=oberpar@linux.ibm.com \
--cc=pasic@linux.ibm.com \
--cc=ramesh@linux.ibm.com \
--cc=schnelle@linux.ibm.com \
--cc=svens@linux.ibm.com \
--cc=ts@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®