diff options
| author |   Andy Lutomirski <luto@kernel.org> | 2021-02-09 18:33:44 -0800 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2021-02-10 14:45:39 +0100 |
| commit | 66fcd98883816dba3b66da20b5fc86fa410638b5 (patch) | |
| tree | c5b78ad2fede708345f04a803daa13222a74fbe1 /arch/x86/mm/fault.c | |
| parent | x86/fault: Rename no_context() to kernelmode_fixup_or_oops() (diff) | |
| download | linux-dev-66fcd98883816dba3b66da20b5fc86fa410638b5.tar.xz linux-dev-66fcd98883816dba3b66da20b5fc86fa410638b5.zip | |
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@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/46160d8babce2abf1d6daa052146002efa24ac56.1612924255.git.luto@kernel.org
Diffstat (limited to 'arch/x86/mm/fault.c')
| -rw-r--r-- | arch/x86/mm/fault.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 3566a594e292..1a0cfede8822 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; } |