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Subject[PATCH] sched: fix double kfree
Impact: fix double kfree in failure path

It's not the responsibility of init_rootdomain() to free root_domain
allocated by alloc_rootdomain().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
kernel/sched.c | 5 ++---
1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/kernel/sched.c b/kernel/sched.c
index 545c6fc..2bad712 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6970,7 +6970,7 @@ static int init_rootdomain(struct root_domain *rd, bool bootmem)
}

if (!alloc_cpumask_var(&rd->span, GFP_KERNEL))
- goto free_rd;
+ goto out;
if (!alloc_cpumask_var(&rd->online, GFP_KERNEL))
goto free_span;
if (!alloc_cpumask_var(&rd->rto_mask, GFP_KERNEL))
@@ -6986,8 +6986,7 @@ free_online:
free_cpumask_var(rd->online);
free_span:
free_cpumask_var(rd->span);
-free_rd:
- kfree(rd);
+out:
return -ENOMEM;
}

--
1.5.4.rc3


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