https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111736
--- Comment #46 from Uroš Bizjak <ubizjak at gmail dot com> --- Created attachment 58259 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58259&action=edit Preprocessed file gcc -O2 -fsanitize=kernel-address -fasan-shadow-offset=0xdffffc0000000000 --param asan-instrumentation-with-call-threshold=10000 -fsanitize=bool -S alternative.i results in: movabsq $-2305847407260205056, %rdx movl $cpu_tlbstate_shared, %eax shrq $3, %rax movzbl (%rax,%rdx), %eax testb %al, %al je .L399 jle .L473 .L399: movzbl %gs:cpu_tlbstate_shared(%rip), %r14d cmpb $1, %r14b which is wrong. %gs: prefixed addresses should not be sanitized.
