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x86, bts: fix unlock problem in ds.c
author
Markus Metzger
<markus.t.metzger@googlemail.com>
Sat, 15 Nov 2008 10:00:17 +0000
(11:00 +0100)
committer
Ingo Molnar
<mingo@elte.hu>
Sun, 16 Nov 2008 07:25:36 +0000
(08:25 +0100)
Fix a problem where ds_request() returned an error without releasing the
ds lock.
Reported-by: Stephane Eranian <eranian@gmail.com>
Signed-off-by: Markus Metzger <markus.t.metzger@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
arch/x86/kernel/ds.c
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diff --git
a/arch/x86/kernel/ds.c
b/arch/x86/kernel/ds.c
index
2b69994
..
ac1d5b0
100644
(file)
--- a/
arch/x86/kernel/ds.c
+++ b/
arch/x86/kernel/ds.c
@@
-384,8
+384,9
@@
static int ds_request(struct task_struct *task, void *base, size_t size,
spin_lock(&ds_lock);
+ error = -EPERM;
if (!check_tracer(task))
-
return -EPERM
;
+
goto out_unlock
;
error = -ENOMEM;
context = ds_alloc_context(task);