Messages in this thread | | | Date | Thu, 10 Jun 2021 14:36:42 -0700 | From | Andrew Morton <> | Subject | Re: [PATCHv8] exec: Fix dead-lock in de_thread with ptrace_attach |
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On Thu, 10 Jun 2021 09:31:42 +0200 Bernd Edlinger <bernd.edlinger@hotmail.de> wrote:
> This introduces signal->unsafe_execve_in_progress, > which is used to fix the case when at least one of the > sibling threads is traced, and therefore the trace > process may dead-lock in ptrace_attach, but de_thread > will need to wait for the tracer to continue execution.
Deadlocks are serious. Is this exploitable by unprivileged userspace?
> Signed-off-by: Bernd Edlinger <bernd.edlinger@hotmail.de>
Was a -stable backport considered?
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