Re: [Devel] [PATCH VZ7] ve: fix task_ve use-after-free from reading /proc/pid/stat

2024-07-09 Thread Chip (Support Bot) from ChickenGuard
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[Devel] [PATCH VZ7] ve: fix task_ve use-after-free from reading /proc/pid/stat

2024-07-09 Thread Pavel Tikhomirov
A task can exit and become a zombie, and outlive its ve. Because exited task is moved into init_css_set, so it does not hold any reference back to ve. More specifically that can happen in two cases: 1) If task is not inside pid namespace of ve and zap_pid_ns_processes will not reap/collect the