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From: cpw@sgi.com
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu, x86@kernel.org
Subject: [patch 7/8 v5] x86, UV: correct failed topology memory leak
Date: Tue, 21 Jun 2011 07:21:32 -0500	[thread overview]
Message-ID: <20110621122242.981533045@sgi.com> (raw)
In-Reply-To: 20110621122125.688884227@sgi.com

[-- Attachment #1: tlb_uv_sanitymemleak --]
[-- Type: text/plain, Size: 1017 bytes --]

Fix a memory leak in init_per_cpu() when the topology check fails.

Signed-off-by: Cliff Wickman <cpw@sgi.com>
---

The leak should never occur after development.  It would only occur in an
unexpected topology that would make the BAU unuseable as a result.  

 arch/x86/platform/uv/tlb_uv.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Index: linux/arch/x86/platform/uv/tlb_uv.c
===================================================================
--- linux.orig/arch/x86/platform/uv/tlb_uv.c
+++ linux/arch/x86/platform/uv/tlb_uv.c
@@ -1797,15 +1797,20 @@ static int __init init_per_cpu(int nuvhu
 	uvhub_mask = kzalloc((nuvhubs+7)/8, GFP_KERNEL);
 
 	if (get_cpu_topology(base_part_pnode, uvhub_descs, uvhub_mask))
-		return 1;
+		goto fail;
 
 	if (summarize_uvhub_sockets(nuvhubs, uvhub_descs, uvhub_mask))
-		return 1;
+		goto fail;
 
 	kfree(uvhub_descs);
 	kfree(uvhub_mask);
 	init_per_cpu_tunables();
 	return 0;
+
+fail:
+	kfree(uvhub_descs);
+	kfree(uvhub_mask);
+	return 1;
 }
 
 /*


  parent reply	other threads:[~2011-06-21 12:24 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-21 12:21 [patch 0/8 v5] Subject: x86, UV: fixes to tlb shootdown cpw
2011-06-21 12:21 ` [patch 1/8 v5] x86, UV: smp_processor_id in a preemptable region cpw
2011-06-21 15:16   ` [tip:x86/uv] x86, UV: Fix smp_processor_id() use " tip-bot for cpw@sgi.com
2011-06-21 12:21 ` [patch 2/8 v5] x86, UV: inline header file functions cpw
2011-06-21 15:16   ` [tip:x86/uv] x86, UV: Inline " tip-bot for cpw@sgi.com
2011-06-21 12:21 ` [patch 3/8 v5] x86, UV: allow for non-consecutive sockets cpw
2011-06-21 15:17   ` [tip:x86/uv] x86, UV: Allow " tip-bot for cpw@sgi.com
2011-06-21 12:21 ` [patch 4/8 v5] x86, UV: correct reset_with_ipi() cpw
2011-06-21 15:17   ` [tip:x86/uv] x86, UV: Correct reset_with_ipi() tip-bot for cpw@sgi.com
2011-06-21 12:21 ` [patch 5/8 v5] x86, UV: rename hubmask to pnmask cpw
2011-06-21 15:18   ` [tip:x86/uv] x86, UV: Rename " tip-bot for cpw@sgi.com
2011-06-21 12:21 ` [patch 6/8 v5] x86, UV: remove cpumask_t from the stack cpw
2011-06-21 15:18   ` [tip:x86/uv] x86, UV: Remove " tip-bot for cpw@sgi.com
2011-06-21 12:21 ` cpw [this message]
2011-06-21 15:18   ` [tip:x86/uv] x86, UV: Correct failed topology memory leak tip-bot for cpw@sgi.com
2011-06-21 12:21 ` [patch 8/8 v5] x86, UV: correct UV2 BAU destination timeout cpw
2011-06-21 15:19   ` [tip:x86/uv] x86, UV: Correct " tip-bot for cpw@sgi.com

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