Messages in this thread |  | | | Date | Fri, 24 Apr 2009 18:39:49 +0200 | | From | Oleg Nesterov <> | | Subject | ptrace && cred_exec_mutex (Was: [PATCH] ptrace: tracehook_unsafe_exec: remove the stale comment) |
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(change subject, add more CCs)
On 04/23, Roland McGrath wrote: > > > tracehook_unsafe_exec() doesn't need task_lock(), remove the old comment. > > Please make it instead say that cred_exec_mutex is held by the caller > through the exec.
Yes. Except it looks like ->cred_exec_mutex is never used in fact.
ptrace_attach() takes current->cred_exec_mutex ? iow, ptrace and exec use different locks ?
Oleg.
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