Messages in this thread | | | Date | Wed, 28 Nov 2018 14:13:48 +0100 | From | Oleg Nesterov <> | Subject | Re: [RFC PATCH RESEND v3 3/3] ptrace: add PTRACE_EVENT_SECCOMP support to PTRACE_GET_SYSCALL_INFO |
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On 11/28, Dmitry V. Levin wrote: > > What about PTRACE_GETSIGINFO? Can it also be done lockless because > ptrace_check_attach() has already called ptrace_freeze_traced()?
Yes, only PTRACE_INTERRUPT needs lock_task_sighand() and it can actually fail because the tracee is not necessarily stopped.
Oleg.
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