[PATCH v2 12/14] 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 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 9fb636b2a3da..466415bdf58c 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -1249,12 +1249,12 @@ void do_user_addr_fault(struct pt_regs *regs,
 		 * user memory.  Unless this is AMD erratum #93, which
 		 * corrupts RIP such that it looks like a user address,
 		 * this is unrecoverable.  Don't even try to look up the
-		 * VMA.
+		 * 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