On Mon, Aug 22, 2011 at 12:30:26PM +0200, Denys Vlasenko wrote: > On Mon, 2011-08-22 at 12:21 +0200, Denys Vlasenko wrote: > > 5. Move post-execve SIGTRAP from get_scno_on_sysenter (multitude of > > places on many architectures) to a single location in > > trace_syscall_entering. This loosens the logic for some arches, since > > many of them had additional checks such as scno == 0. So maybe this last > > patch is not 100% safe. (However, on non-ancient Linux kernels we should > > never have post-execve SIGTRAP in the first place, by virtue of using > > PTRACE_O_TRACEEXEC.)
I have no idea when this "scno == 0" check was needed, the code comes from pre-cvs times. -- ldv
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