Mark Johnston a11ac730a7 Prevent CPU migration when checking the DTrace nofault flag on x86. ... dtrace_trap() consumes page and protection faults triggered by code running in DTrace probe context. Such faults occur with interrupts disabled and are detected using a per-CPU flag. Regular faults cause dtrace_trap() to be called with interrupts enabled, and nothing was ensuring that the flag was read from the correct CPU. This may result in dtrace_trap() consuming unrelated page and protection faults when DTrace is enabled, causing the fault handler to return without actually having handled the fault. Diagnosed by: Ryan Libby <rlibby@gmail.com> MFC after: 3 days Sponsored by: Dell EMC Isilon		2017-02-16 23:05:20 +00:00
..
dtmalloc	The dtmalloc provider uses the short description of a malloc type as the	2013-06-28 03:14:40 +00:00
dtrace	Prevent CPU migration when checking the DTrace nofault flag on x86.	2017-02-16 23:05:20 +00:00
fbt	Revert crap accidentally committed	2017-01-28 16:31:23 +00:00
profile	Add initial DTrace support for RISC-V.	2016-05-24 16:41:37 +00:00
sdt	Initialize SDT probes during SI_SUB_DTRACE_PROVIDER.	2016-04-10 01:24:27 +00:00
systrace	Re-check the systrace probe ID before calling dtrace_probe().	2016-09-22 23:22:53 +00:00
prototype.c