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[PARISC] be more defensive in process.c::get_wchan
[sfrench/cifs-2.6.git]
/
arch
/
parisc
/
kernel
/
process.c
diff --git
a/arch/parisc/kernel/process.c
b/arch/parisc/kernel/process.c
index 0dd3847f494c390f78563ea2c450d7e90cfa918d..355664812b8319e1d0c9b01115fd4dbe162f8dc2 100644
(file)
--- a/
arch/parisc/kernel/process.c
+++ b/
arch/parisc/kernel/process.c
@@
-381,6
+381,10
@@
get_wchan(struct task_struct *p)
struct unwind_frame_info info;
unsigned long ip;
int count = 0;
+
+ if (!p || p == current || p->state == TASK_RUNNING)
+ return 0;
+
/*
* These bracket the sleeping functions..
*/