diff options
| author | Prasad Sodagudi <psodagud@codeaurora.org> | 2017-03-06 12:08:11 -0800 |
|---|---|---|
| committer | Prasad Sodagudi <psodagud@codeaurora.org> | 2017-03-07 11:08:25 -0800 |
| commit | 6b688207198e8d33095b3533f57d48904cd7dba9 (patch) | |
| tree | 9200c88f8f76435667043649748bb8b56ee2aead | |
| parent | 4ffd6a18c4ff505c0bb1fb7ff5863ade12a87342 (diff) | |
arm64: Remove orig_addr_limit check in do_page_fault
Remove the orig_addr_limit check against KERNEL_DS in
do_page_fault handler for permissions faults. This
check is part of UAO and PAN features and these features
are disabled by default.
Change-Id: I5de760b983edcf14d1c0bee2a53dc091ceca31da
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
| -rw-r--r-- | arch/arm64/mm/fault.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index c3efb77d1229..a2b67feb623b 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -334,10 +334,6 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr, } if (addr < USER_DS && is_permission_fault(esr, regs)) { - /* regs->orig_addr_limit may be 0 if we entered from EL0 */ - if (regs->orig_addr_limit == KERNEL_DS) - die("Accessing user space memory with fs=KERNEL_DS", regs, esr); - if (is_el1_instruction_abort(esr)) die("Attempting to execute userspace memory", regs, esr); |