fetching the displacement, so the node would always think there was no
displacement.
This didn't alter the final GPA we would be touching - because it is
fetched from the kernel directly and not from the computation -, but it
altered the instruction length, and on some guests (like Fedora 64bit),
the VCPU would resume execution at the wrong RIP and crash.
Now these guests work.
Add traceme_vfork_signalmasked_crash and traceme_vfork_signalignored_crash
tests for crash signals (SIGTRAP, SIGSEGV, SIGILL, SIGFPE, SIGBUS).
These new scenario assert that signal masked/ignored are delivered to
vfork(2)ed child.
All tests pass.
Check whether sigignore is not reset on a trapsignal under a debugger.
The expected behavior is to not reset it. A side effect of resetting
signal mask is noticable especially with a software/hardware breakpoint
that changes state of a process.
Mark these tests as failing.
Check whether signal mask is not reset on a trapsignal under a debugger.
The expected behavior is to not reset it. A side effect of resetting
signal mask is noticable especially with a software/hardware breakpoint
that changes state of a process.
Mark these tests as failing.
are detached.
This is because xfers of USBD_NOT_STARTED can be removed from queue
in an invisible way to host controller drivers.
Discussed on tech-kern.
are detached from xhci(4) or ehci(4), that enable up_serialise for
bulk transfers.
The cause of problem is that usbd_ar_pipe() waits xfers of
USBD_NOT_STARTED to be removed, although underlying upm_abort
functions do not remove such queues, as reported by "sc dying".
Therefore, remove xfers of USBD_NOT_STARTED when pipe is closed.
Patch provided by Nick Hudson.
explicitly set WARNS for modules that fail with WARNS=5.
Also, turn on -Wno-missing-noreturn for clang for some files.
At the moment, among ~ 360 modules,
- 2 (lua and zfs) need WARNS=0
- 1 (solaris) needs WARNS=1
- 136 need WARNS=3 (mostly due to sign-compare)
- 4 need WARNS=4
- others can be compiled with WARNS=5
Discussed on tech-kern.
the checking for gcc 4.6 and some exception handling routines which
we need on several platforms.
this should fix missing symbol issues seen on current-users.
new variant: -1 when functions have fundamentally changed the menu
definition on the fly and the processing functions needs to restart
without looking at the old state (or stale cached pointers).
UBSan: Undefined Behavior in src/sys/dev/acpi/acpica/OsdHardware.c:265:17,
left shift of 255 by 24 places cannot be represented in type 'int'
This file isn't part of upstream acpica so just fix it locally.
Reported and initial patch by <Akul Pillai>
Fix the kernel pty driver to report closed slave via master's kevent
EVFILT_READ. This behavior matches the behavior for pipes, is
consistent with how FreeBSD implements it and is relied upon by LLDB's
main loop implementation.
Includes feedback by kre and kamil (from tech-kern), commit approved
by kamil.
writes to MSR_TSC at run time.
This is imprecise, because the hardware does not provide a way to preserve
the TSC during #VMEXITs, but that's fine enough.
New tests verify that crashes (from trap signals) are delivered to tracer
regardless of the signal masking or signal ignoring option enabled in the
traced child.
All tests pass.
In close future these tests will obtain additional asserts.
Verify that ignoring (with SIG_IGN) in tracee
does not stop tracer from catching this raised signal.
Cover crash signals and already covered ones in other tests.
All tests pass.
