On Mon, Oct 21, 2019 at 01:33:27PM +0200, Christian Brauner wrote: > When assiging and testing taskstats in taskstats_exit() there's a race > when writing and reading sig->stats when a thread-group with more than > one thread exits: > > cpu0: > thread catches fatal signal and whole thread-group gets taken down > do_exit() > do_group_exit() Nit: I don't think this is the signal-handling path. > taskstats_exit() > taskstats_tgid_alloc() > The tasks reads sig->stats without holding sighand lock. > > cpu1: > task calls exit_group() > do_exit() > do_group_exit() Nit: These ^^ seem to be the wrong way round. Will
