Commit a9474646 authored by Hidetoshi Seto's avatar Hidetoshi Seto Committed by Tony Luck

[IA64] mca_drv: Add minstate validation

MCA driver can cause panic if kernel gets a state info with no minstate.
This patch adds minstate validation before handling it.
Signed-off-by: default avatarHidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent 1ff0be15
...@@ -437,6 +437,9 @@ recover_from_read_error(slidx_table_t *slidx, ...@@ -437,6 +437,9 @@ recover_from_read_error(slidx_table_t *slidx,
* the process not have any locks of kernel. * 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); psr1 =(struct ia64_psr *)&(peidx_minstate_area(peidx)->pmsa_ipsr);
/* /*
......
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