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https://github.com/xen-project/xen.git
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Matthew Barnes
35fba21e51
xen-hvmcrash would previously save records, overwrite the instruction
pointer with a bogus value, and then restore them to crash a domain
just enough to cause the guest OS to memdump.
This approach is found to be unreliable when tested on a guest running
Windows 10 x64, with some executions doing nothing at all.
Another approach would be to trigger NMIs. This approach is found to be
unreliable when tested on Linux (Ubuntu 22.04), as Linux will ignore
NMIs if it is not configured to handle such.
Injecting a double fault abort to all vCPUs is found to be more
reliable at crashing and invoking memdumps from Windows and Linux
domains.
This patch modifies the xen-hvmcrash tool to inject #DF to all vCPUs
belonging to the specified domain, instead of overwriting RIP.
Signed-off-by: Matthew Barnes <matthew.barnes@cloud.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
master commit: e42e4d8c3e
master date: 2024-07-22 10:50:03 +0100
134 lines
4.3 KiB
Makefile
134 lines
4.3 KiB
Makefile
XEN_ROOT=$(CURDIR)/../..
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include $(XEN_ROOT)/tools/Rules.mk
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# Include configure output (config.h)
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CFLAGS += -include $(XEN_ROOT)/tools/config.h
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CFLAGS += $(CFLAGS_libxenevtchn)
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CFLAGS += $(CFLAGS_libxenctrl)
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CFLAGS += $(CFLAGS_libxenguest)
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CFLAGS += $(CFLAGS_xeninclude)
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CFLAGS += $(CFLAGS_libxenstore)
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# Everything to be installed in regular bin/
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INSTALL_BIN-$(CONFIG_X86) += xen-cpuid
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INSTALL_BIN-$(CONFIG_X86) += xen-detect
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INSTALL_BIN += xencov_split
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INSTALL_BIN += $(INSTALL_BIN-y)
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# Everything to be installed in regular sbin/
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INSTALL_SBIN-$(CONFIG_MIGRATE) += xen-hptool
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INSTALL_SBIN-$(CONFIG_X86) += xen-hvmcrash
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INSTALL_SBIN-$(CONFIG_X86) += xen-hvmctx
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INSTALL_SBIN-$(CONFIG_X86) += xen-lowmemd
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INSTALL_SBIN-$(CONFIG_X86) += xen-mceinj
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INSTALL_SBIN-$(CONFIG_X86) += xen-memshare
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INSTALL_SBIN-$(CONFIG_X86) += xen-mfndump
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INSTALL_SBIN-$(CONFIG_X86) += xen-ucode
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INSTALL_SBIN-$(CONFIG_X86) += xen-vmtrace
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INSTALL_SBIN += xencov
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INSTALL_SBIN += xenhypfs
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INSTALL_SBIN += xenlockprof
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INSTALL_SBIN += xenperf
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INSTALL_SBIN += xenpm
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INSTALL_SBIN += xenwatchdogd
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INSTALL_SBIN += xen-access
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INSTALL_SBIN += xen-livepatch
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INSTALL_SBIN += xen-diag
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INSTALL_SBIN += $(INSTALL_SBIN-y)
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# Everything to be installed
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TARGETS_ALL := $(INSTALL_BIN) $(INSTALL_SBIN)
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# Everything which only needs copying to install
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TARGETS_COPY += xencov_split
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# Everything which needs to be built
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TARGETS := $(filter-out $(TARGETS_COPY),$(TARGETS_ALL))
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.PHONY: all
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all: $(TARGETS)
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.PHONY: install
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install: all
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$(INSTALL_DIR) $(DESTDIR)$(bindir)
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$(INSTALL_DIR) $(DESTDIR)$(sbindir)
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$(INSTALL_DIR) $(DESTDIR)$(LIBEXEC_BIN)
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$(INSTALL_PYTHON_PROG) $(INSTALL_BIN) $(DESTDIR)$(bindir)
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$(INSTALL_PYTHON_PROG) $(INSTALL_SBIN) $(DESTDIR)$(sbindir)
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.PHONY: uninstall
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uninstall:
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rm -f $(addprefix $(DESTDIR)$(sbindir)/, $(INSTALL_SBIN))
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rm -f $(addprefix $(DESTDIR)$(bindir)/, $(INSTALL_BIN))
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.PHONY: clean
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clean:
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$(RM) *.o $(TARGETS) $(DEPS_RM)
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.PHONY: distclean
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distclean: clean
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xen-access: xen-access.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenevtchn) $(APPEND_LDFLAGS)
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xen-cpuid: xen-cpuid.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(APPEND_LDFLAGS)
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xen-detect: xen-detect.o
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$(CC) $(LDFLAGS) -o $@ $< $(APPEND_LDFLAGS)
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xen-hvmctx: xen-hvmctx.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xen-hvmcrash: xen-hvmcrash.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxendevicemodel) $(APPEND_LDFLAGS)
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xen-memshare: xen-memshare.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xen-vmtrace: xen-vmtrace.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenforeignmemory) $(APPEND_LDFLAGS)
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xen-mceinj: xen-mceinj.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
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xenperf: xenperf.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xenpm: xenpm.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xenhypfs: xenhypfs.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenhypfs) $(APPEND_LDFLAGS)
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xenlockprof: xenlockprof.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xen-hptool: xen-hptool.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
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xenhypfs.o: CFLAGS += $(CFLAGS_libxenhypfs)
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xen-mfndump: xen-mfndump.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenguest) $(APPEND_LDFLAGS)
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xenwatchdogd: xenwatchdogd.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xen-livepatch: xen-livepatch.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xen-diag: xen-diag.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xen-lowmemd: xen-lowmemd.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenevtchn) $(LDLIBS_libxenctrl) $(LDLIBS_libxenstore) $(APPEND_LDFLAGS)
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xencov: xencov.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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xen-ucode: xen-ucode.o
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$(CC) $(LDFLAGS) -o $@ $< $(LDLIBS_libxenctrl) $(APPEND_LDFLAGS)
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-include $(DEPS_INCLUDE)
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