Re: [PATCH] elf_core_dump: use rcu_read_lock() to access ->real_parent

[David Howells]

Oleg Nesterov <oleg@xxxxxxxxxx> wrote:

> (on top of ptrace-s-parent-real_parent-in-binfmt_elf_fdpicc.patch)
> 
> In theory it is not safe to dereference ->parent/real_parent without
> tasklist or rcu lock, we can race with re-parenting.
> 
> Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>

Acked-by: David Howells <dhowells@xxxxxxxxxx>
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