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From: Julia Lawall <julia.lawall@lip6.fr>
To: Baoquan He <bhe@redhat.com>
Cc: brijesh.singh@amd.com, thomas.lendacky@amd.com, airlied@linux.ie,
	linux-pci@vger.kernel.org, richard.weiyang@gmail.com,
	keith.busch@intel.com, jcmvbkbc@gmail.com,
	baiyaowei@cmss.chinamobile.com, frowand.list@gmail.com,
	lorenzo.pieralisi@arm.com, sthemmin@microsoft.com,
	Baoquan He <bhe@redhat.com>,
	linux-nvdimm@lists.01.org, patrik.r.jakobsson@gmail.com,
	linux-input@vger.kernel.org, gustavo@padovan.org,
	dyoung@redhat.com, vgoyal@redhat.com, kbuild-all@01.org,
	devicetree@vger.kernel.org, haiyangz@microsoft.com,
	maarten.lankhorst@linux.intel.com, jglisse@redhat.com,
	seanpaul@chromium.org, bhelgaas@google.com, tglx@linutronix.de,
	yinghai@kernel.org, jonathan.derrick@intel.com, chris@zankel.net,
	monstr@monstr.eu, linux-parisc@vger.kernel.org,
	gregkh@linuxfoundation.org, dmitry.torokhov@gmail.com,
	kexec@lists.infradead.org, ebiederm@xmission.com,
	devel@linuxdriverproject.org, linuxppc-dev@lists.ozlabs.org,
	davem@davemloft.net
Subject: Re: [PATCH v5 2/4] resource: Use list_head to link sibling resource
Date: Tue, 12 Jun 2018 17:10:12 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.20.1806121708070.3334@hadrien> (raw)

This looks wrong.  After a list iterator, the index variable points to a
dummy structure.

julia

url:    https://github.com/0day-ci/linux/commits/Baoquan-He/resource-Use-list_head-to-link-sibling-resource/20180612-113600
:::::: branch date: 7 hours ago
:::::: commit date: 7 hours ago

>> kernel/resource.c:265:17-20: ERROR: invalid reference to the index variable of the iterator on line 253

# https://github.com/0day-ci/linux/commit/e906f15906750a86913ba2b1f08bad99129d3dfc
git remote add linux-review https://github.com/0day-ci/linux
git remote update linux-review
git checkout e906f15906750a86913ba2b1f08bad99129d3dfc
vim +265 kernel/resource.c

^1da177e4 Linus Torvalds 2005-04-16  247
5eeec0ec9 Yinghai Lu     2009-12-22  248  static void __release_child_resources(struct resource *r)
5eeec0ec9 Yinghai Lu     2009-12-22  249  {
e906f1590 Baoquan He     2018-06-12  250  	struct resource *tmp, *next;
5eeec0ec9 Yinghai Lu     2009-12-22  251  	resource_size_t size;
5eeec0ec9 Yinghai Lu     2009-12-22  252
e906f1590 Baoquan He     2018-06-12 @253  	list_for_each_entry_safe(tmp, next, &r->child, sibling) {
5eeec0ec9 Yinghai Lu     2009-12-22  254  		tmp->parent = NULL;
e906f1590 Baoquan He     2018-06-12  255  		INIT_LIST_HEAD(&tmp->sibling);
5eeec0ec9 Yinghai Lu     2009-12-22  256  		__release_child_resources(tmp);
5eeec0ec9 Yinghai Lu     2009-12-22  257
5eeec0ec9 Yinghai Lu     2009-12-22  258  		printk(KERN_DEBUG "release child resource %pR\n", tmp);
5eeec0ec9 Yinghai Lu     2009-12-22  259  		/* need to restore size, and keep flags */
5eeec0ec9 Yinghai Lu     2009-12-22  260  		size = resource_size(tmp);
5eeec0ec9 Yinghai Lu     2009-12-22  261  		tmp->start = 0;
5eeec0ec9 Yinghai Lu     2009-12-22  262  		tmp->end = size - 1;
5eeec0ec9 Yinghai Lu     2009-12-22  263  	}
e906f1590 Baoquan He     2018-06-12  264
e906f1590 Baoquan He     2018-06-12 @265  	INIT_LIST_HEAD(&tmp->child);
5eeec0ec9 Yinghai Lu     2009-12-22  266  }
5eeec0ec9 Yinghai Lu     2009-12-22  267

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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             reply	other threads:[~2018-06-12 15:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-12 15:10 Julia Lawall [this message]
2018-06-13  6:55 ` [PATCH v5 2/4] resource: Use list_head to link sibling resource Baoquan He
  -- strict thread matches above, loose matches on Subject: below --
2018-06-12  3:28 [PATCH v5 0/4] " Baoquan He
2018-06-12  3:28 ` [PATCH v5 2/4] " Baoquan He
2018-06-12  4:37   ` kbuild test robot
2018-06-12  4:49   ` kbuild test robot

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