RE: [PATCH v3] x86/fault: Send a SIGBUS to user process always for hwpoison page access.
From: "Luck, Tony" <tony.luck@intel.com>
Date: 2021-03-11 16:53:03
Also in:
linux-api, lkml
I think we need to at least fix the existing bug before we add more signals. AFAICS the MCE_IN_KERNEL_COPYIN code is busted for kernel threads.
Can a kernel thread do get_user() or copy_from_user()? Do we have kernel threads that have an associated user address space to copy from? -Tony