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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2012-01-28 11:52:46 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2012-01-28 13:09:06 +0100 |
| commit | d0caf292505d051b1026e85faf3a85e907566f31 (patch) | |
| tree | eda525b9ff71123eafbbe2da24d789a089f3a592 /arch/x86/kernel/dumpstack_64.c | |
| parent | perf: Fix broken interrupt rate throttling (diff) | |
| download | linux-d0caf292505d051b1026e85faf3a85e907566f31.tar.xz linux-d0caf292505d051b1026e85faf3a85e907566f31.zip | |
x86/dumpstack: Remove unneeded check in dump_trace()
Smatch complains that we have some inconsistent NULL checking.
If "task" were NULL then it would lead to a NULL dereference
later. We can remove this test because earlier on in the
function we have:
if (!task)
task = current;
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Clemens Ladisch <clemens@ladisch.de>
Link: http://lkml.kernel.org/r/20120128105246.GA25092@elgon.mountain
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/dumpstack_64.c')
| -rw-r--r-- | arch/x86/kernel/dumpstack_64.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c index 6d728d9284bd..af7785ff5aa0 100644 --- a/arch/x86/kernel/dumpstack_64.c +++ b/arch/x86/kernel/dumpstack_64.c @@ -129,7 +129,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, if (!stack) { if (regs) stack = (unsigned long *)regs->sp; - else if (task && task != current) + else if (task != current) stack = (unsigned long *)task->thread.sp; else stack = &dummy; |