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-rw-r--r--arch/ia64/kernel/mca_drv.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index 3492e32..8fd93af 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -437,6 +437,9 @@ recover_from_read_error(slidx_table_t *slidx,
* the process not have any locks of kernel.
*/
+ /* Is minstate valid? */
+ if (!peidx_bottom(peidx) || !(peidx_bottom(peidx)->valid.minstate))
+ return 0;
psr1 =(struct ia64_psr *)&(peidx_minstate_area(peidx)->pmsa_ipsr);
/*
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