[tip:sched/urgent] sched: Fix a memory leak in __sdt_free()
From: tip-bot for WANG Cong
Date: Mon Aug 29 2011 - 10:57:12 EST
Commit-ID: feff8fa0075bdfd43c841e9d689ed81adda988d6
Gitweb: http://git.kernel.org/tip/feff8fa0075bdfd43c841e9d689ed81adda988d6
Author: WANG Cong <amwang@xxxxxxxxxx>
AuthorDate: Thu, 18 Aug 2011 20:36:57 +0800
Committer: Ingo Molnar <mingo@xxxxxxx>
CommitDate: Mon, 29 Aug 2011 12:27:01 +0200
sched: Fix a memory leak in __sdt_free()
This patch fixes the following memory leak:
unreferenced object 0xffff880107266800 (size 512):
comm "sched-powersave", pid 3718, jiffies 4323097853 (age 27495.450s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<ffffffff81133940>] create_object+0x187/0x28b
[<ffffffff814ac103>] kmemleak_alloc+0x73/0x98
[<ffffffff811232ba>] __kmalloc_node+0x104/0x159
[<ffffffff81044b98>] kzalloc_node.clone.97+0x15/0x17
[<ffffffff8104cb90>] build_sched_domains+0xb7/0x7f3
[<ffffffff8104d4df>] partition_sched_domains+0x1db/0x24a
[<ffffffff8109ee4a>] do_rebuild_sched_domains+0x3b/0x47
[<ffffffff810a00c7>] rebuild_sched_domains+0x10/0x12
[<ffffffff8104d5ba>] sched_power_savings_store+0x6c/0x7b
[<ffffffff8104d5df>] sched_mc_power_savings_store+0x16/0x18
[<ffffffff8131322c>] sysdev_class_store+0x20/0x22
[<ffffffff81193876>] sysfs_write_file+0x108/0x144
[<ffffffff81135b10>] vfs_write+0xaf/0x102
[<ffffffff81135d23>] sys_write+0x4d/0x74
[<ffffffff814c8a42>] system_call_fastpath+0x16/0x1b
[<ffffffffffffffff>] 0xffffffffffffffff
Signed-off-by: WANG Cong <amwang@xxxxxxxxxx>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: stable@xxxxxxxxxx # 3.0
Link: http://lkml.kernel.org/r/1313671017-4112-1-git-send-email-amwang@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
---
kernel/sched.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/kernel/sched.c b/kernel/sched.c
index 511732c..c79e7c6 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -7453,6 +7453,7 @@ static void __sdt_free(const struct cpumask *cpu_map)
struct sched_domain *sd = *per_cpu_ptr(sdd->sd, j);
if (sd && (sd->flags & SD_OVERLAP))
free_sched_groups(sd->groups, 0);
+ kfree(*per_cpu_ptr(sdd->sd, j));
kfree(*per_cpu_ptr(sdd->sg, j));
kfree(*per_cpu_ptr(sdd->sgp, j));
}
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