Messages in this thread | | | From | Andy Lutomirski <> | Date | Sat, 1 Feb 2014 18:32:31 -0800 | Subject | Why is syscall auditing on with no rules? |
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On a stock Fedora installation:
$ sudo auditctl -l No rules
Nonetheless TIF_SYSCALL_AUDIT is set and the __audit_syscall_entry and __audit_syscall_exit account for >20% of syscall overhead according to perf.
This sucks. Unless I'm missing something, syscall auditing is *off*.
How hard would it be to arrange for TIF_SYSCALL_AUDIT to be cleared when there are no syscall rules?
(This is extra bad in kernels before 3.13, where the clear call for TIF_SYSCALL_AUDIT was completely missing.)
--Andy
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