• In-kernel buffering of syscall outparam data
• Expose Branch Trace Store to userspace
• Efficient way for ptrace tracers to wait on a tracee's private futex
• Bugfix: pwrite64/pread64 modify registers in a way visible to userspace
• Bugfix: agree a kernel/userspace contract for ptrace traps of PR_TSC_SIGSEGV
• Bugfix: raise PTRACE_O_SYSGOOD traps when PTRACE_SINGLESTEP'ing into syscalls?
• Bugfix: are drivers really allowed to use userspace stack as scratch memory?
• Bugfix?: ability to open perf_event_open() fds through /proc/TID/fd/x
• Bugfix?: wait status 0x80007f seems invalid