Oleg Nesterov 0c3351a0a4 tracing: Fix syscall_*regfunc() vs copy_process() race ... commit 4af4206be2 upstream. syscall_regfunc() and syscall_unregfunc() should set/clear TIF_SYSCALL_TRACEPOINT system-wide, but do_each_thread() can race with copy_process() and miss the new child which was not added to the process/thread lists yet. Change copy_process() to update the child's TIF_SYSCALL_TRACEPOINT under tasklist. Link: http://lkml.kernel.org/p/20140413185854.GB20668@redhat.com Fixes: a871bd33a6 "tracing: Add syscall tracepoints" Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2014-07-06 18:49:20 -07:00
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events	trace: module: Maintain a valid user count	2014-06-07 16:02:02 -07:00
define_trace.h
ftrace.h	tracing: Allow events to have NULL strings	2013-12-04 10:50:34 -08:00
syscall.h	tracing: Fix syscall_*regfunc() vs copy_process() race	2014-07-06 18:49:20 -07:00