[PATCH 11/11] x86/fault: Don't look for extable entries for SMEP violations

[Andy Lutomirski]

If we get a SMEP violation or a fault that would have been a SMEP
violation if we had SMEP, we shouldn't run fixups.  Just OOPS.

Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
---
 arch/x86/mm/fault.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index d39946ad8a91..08f5f74cf989 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1211,12 +1211,13 @@ void do_user_addr_fault(struct pt_regs *regs,
 		/*
 		 * Whoops, this is kernel mode code trying to execute from
 		 * user memory.  Unless this is AMD erratum #93, we are toast.
-		 * Don't even try to look up the VMA.
+		 * Don't even try to look up the VMA or look for extable
+		 * entries.
 		 */
 		if (is_errata93(regs, address))
 			return;
 
-		bad_area_nosemaphore(regs, error_code, address);
+		page_fault_oops(regs, error_code, address);
 		return;
 	}
 
-- 
2.29.2