From a94746461765dae41fb82e4dac027d14af4d80d8 Mon Sep 17 00:00:00 2001 From: Hidetoshi Seto Date: Thu, 9 Feb 2006 14:42:55 -0800 Subject: [PATCH] [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: Hidetoshi Seto Signed-off-by: Tony Luck --- arch/ia64/kernel/mca_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c index 3492e3211a44..8fd93afa75a7 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); /* -- 2.20.1