The following commit has been merged into the x86/mm branch of tip: Commit-ID: 66fcd98883816dba3b66da20b5fc86fa410638b5 Gitweb: https://git.kernel.org/tip/66fcd98883816dba3b66da20b5fc86fa410638b5 Author: Andy Lutomirski <luto@xxxxxxxxxx> AuthorDate: Tue, 09 Feb 2021 18:33:44 -08:00 Committer: Borislav Petkov <bp@xxxxxxx> CommitterDate: Wed, 10 Feb 2021 14:45:39 +01:00 x86/fault: Don't look for extable entries for SMEP violations If the kernel gets a SMEP violation or a fault that would have been a SMEP violation if it had SMEP support, it shouldn't run fixups. Just OOPS. [ bp: Massage commit message. ] Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lkml.kernel.org/r/46160d8babce2abf1d6daa052146002efa24ac56.1612924255.git.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 3566a59..1a0cfed 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -1250,12 +1250,12 @@ 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; }
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