On Tue, Aug 12, 2025 at 03:23:49PM +0200, Maciej Wieczor-Retman wrote: > Inline KASAN on x86 does tag mismatch reports by passing the faulty > address and metadata through the INT3 instruction - scheme that's setup > in the LLVM's compiler code (specifically HWAddressSanitizer.cpp). > > Add a kasan hook to the INT3 handling function. > > Disable KASAN in an INT3 core kernel selftest function since it can raise > a false tag mismatch report and potentially panic the kernel. > > Make part of that hook - which decides whether to die or recover from a > tag mismatch - arch independent to avoid duplicating a long comment on > both x86 and arm64 architectures. > > Signed-off-by: Maciej Wieczor-Retman <maciej.wieczor-retman@xxxxxxxxx> Can we please split this into an arm64 and x86 patch. Also, why use int3 here rather than a #UD trap, which we use for all other such cases?
