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From: Dan Williams <dan.j.williams@intel.com>
To: gregkh@linuxfoundation.org
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Marc Herbert <marc.herbert@intel.com>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-coco@lists.linux.dev, alsa-devel@alsa-project.org
Subject: [PATCH 0/3] sysfs: Group visibility fixups
Date: Thu, 22 Feb 2024 12:40:48 -0800	[thread overview]
Message-ID: <170863444851.1479840.10249410842428140526.stgit@dwillia2-xfh.jf.intel.com> (raw)

Hey Greg,

Marc was able to get me a backtrace for that bootup hang scenario that
Pierre noted here [1]. A Tested-by is still pending, but I am certain
this is the issue, and it may impact more than just the one platform if
that "empty_attrs" pattern has been repeated anywhere else in the
kernel.

I also took some time to document how to use the helpers a bit better,
and introduce DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE() for cases where all
that matters is group visibility and not per attribute visibility.

[1]: http://lore.kernel.org/r/b93ec9c2-23f5-486b-a3dc-ed9b960df359@linux.intel.com

---

Dan Williams (3):
      sysfs: Fix crash on empty group attributes array
      sysfs: Document new "group visible" helpers
      sysfs: Introduce DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE()


 fs/sysfs/group.c      |    4 +-
 include/linux/sysfs.h |   85 +++++++++++++++++++++++++++++++++++++++++++++++--
 2 files changed, 84 insertions(+), 5 deletions(-)

base-commit: 70317fd24b419091aa0a6dc3ea3ec7bb50c37c32

             reply	other threads:[~2024-02-22 20:40 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-22 20:40 Dan Williams [this message]
2024-02-22 20:40 ` [PATCH 1/3] sysfs: Fix crash on empty group attributes array Dan Williams
2024-02-22 21:14   ` Rafael J. Wysocki
2024-02-22 22:03     ` Dan Williams
2024-02-22 23:15   ` Dan Williams
2024-04-22  9:20   ` Lukas Wunner
2024-04-26 17:59     ` Dan Williams
2024-04-26 19:18       ` Lukas Wunner
2024-04-27 11:05         ` Greg KH
2024-04-27 16:49         ` Dan Williams
2024-04-27 21:14           ` Lukas Wunner
2024-04-27 21:33             ` Dan Williams
2024-04-27 22:39               ` Dan Williams
2024-04-27 23:09                 ` Dan Williams
2024-04-28 10:08               ` Lukas Wunner
2024-04-29 17:47                 ` Dan Williams
2024-02-22 20:41 ` [PATCH 2/3] sysfs: Document new "group visible" helpers Dan Williams
2024-02-22 20:41 ` [PATCH 3/3] sysfs: Introduce DEFINE_SIMPLE_SYSFS_GROUP_VISIBLE() Dan Williams
2024-02-23  6:33 ` [PATCH 0/3] sysfs: Group visibility fixups Greg KH

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