diff --git a/repos/dde_rump/lib/mk/rump_base.inc b/repos/dde_rump/lib/mk/rump_base.inc
index 66093710fd..45bd847794 100644
--- a/repos/dde_rump/lib/mk/rump_base.inc
+++ b/repos/dde_rump/lib/mk/rump_base.inc
@@ -25,10 +25,11 @@ SOURCE = $(addprefix $(REP_DIR)/src/lib/rump/,$(SRC_CC))
 #
 # Rump build script
 #
-BUILD_CMD = AR=$(AR) NM=$(NM) OBJCOPY=$(OBJCOPY) \
+BUILD_CMD = BUILD_CC=cc BUILD_AR=ar BUILD_NM=nm BUILD_OBJCOPY=objcopy \
+            AR=$(AR) NM=$(NM) OBJCOPY=$(OBJCOPY) CC_TARGET=$(shell basename $(CC)) \
             $(RUMP_CONTRIB_DIR)/buildrump.sh -k -V'MAKEVERBOSE=$(VERBOSE_LEVEL)' \
-            $(RUMP_OPT) -s $(RUMP_SRC) -T $(RUMP_TOOLS) -o $(RUMP_OBJ) \
-            -d $(RUMP_BASE)
+            -V'NOGCCERROR=1' $(RUMP_OPT) -s $(RUMP_SRC) -T $(RUMP_TOOLS) \
+            -o $(RUMP_OBJ) -d $(RUMP_BASE)
 
 #
 # Linkage
@@ -83,7 +84,7 @@ $(RUMP_BASE)/include/.prepared: $(ARCHIVE)
 	@cd $(RUMP_SRC)/sys; $(RMAKE) -k obj >/dev/null 2>&1
 	@cd $(RUMP_SRC)/sys;  $(RMAKE) -k includes >/dev/null 2>&1
 	@cd $(RUMP_SRC)/include; $(RMAKE) -k includes > /dev/null 2>&1
-	@cd $(RUMP_CONTRIB_DIR)/nblibs/lib/libc; $(RMAKE) includes 
+	@cd $(RUMP_CONTRIB_DIR)/nblibs/lib/libc; $(RMAKE) includes
 	@cd $(RUMP_CONTRIB_DIR)/nblibs/lib/libpthread; $(RMAKE) includes >/dev/null 2>&1
 	@touch $(RUMP_BASE)/include/.prepared
 
diff --git a/repos/dde_rump/lib/mk/rump_fs.mk b/repos/dde_rump/lib/mk/rump_fs.mk
index 31a5f8c155..cb108a2713 100644
--- a/repos/dde_rump/lib/mk/rump_fs.mk
+++ b/repos/dde_rump/lib/mk/rump_fs.mk
@@ -5,17 +5,13 @@ LIBS    += rump
 
 RUMP_LIBS = librumpdev.a         \
             librumpdev_disk.a    \
-            librumpdev_netsmb.a  \
             librumpkern_crypto.a \
-            librumpnet.a         \
             librumpvfs.a         \
             librumpfs_cd9660.a   \
             librumpfs_ext2fs.a   \
             librumpfs_ffs.a      \
             librumpfs_msdos.a    \
-            librumpfs_nfs.a      \
             librumpfs_ntfs.a     \
-            librumpfs_smbfs.a    \
             librumpfs_udf.a
 
 ARCHIVE += $(addprefix $(RUMP_LIB)/,$(RUMP_LIBS))
diff --git a/repos/dde_rump/patches/build.patch b/repos/dde_rump/patches/build.patch
index 722af57765..ddbedd0ad4 100644
--- a/repos/dde_rump/patches/build.patch
+++ b/repos/dde_rump/patches/build.patch
@@ -1,66 +1,221 @@
 diff --git a/buildrump.sh b/buildrump.sh
-index f600b6a..f6bb302 100755
+index 9cc5457..620dbf1 100755
 --- a/buildrump.sh
 +++ b/buildrump.sh
-@@ -570,6 +570,16 @@ evaltools ()
- 		: ${NM:=nm}
- 		: ${OBJCOPY:=objcopy}
- 	else
-+		if [ "${MACH_ARCH}" = 'x86_64' ] ; then
-+			cc_target=genode-x86
-+		elif [ "${MACH_ARCH}" = 'arm' ] ; then
-+			cc_target=genode-arm
-+		else
-+			die Unsupported architectur ${MACH_ARCH}
-+		fi
-+
-+		echo "MACH_ARCH cc ${MACH_ARCH}"
-+
- 		: ${AR:=${cc_target}-ar}
- 		: ${NM:=${cc_target}-nm}
- 		: ${OBJCOPY:=${cc_target}-objcopy}
-@@ -600,6 +610,8 @@ evaltools ()
- 		;;
- 	esac
+@@ -191,8 +191,8 @@ probear ()
+ {
  
-+	TARGET=freebsd
-+
- 	# check if we're running from a tarball, i.e. is checkout possible
- 	BRDIR=$(dirname $0)
- 	unset TARBALLMODE
-@@ -872,26 +884,6 @@ evaltarget ()
- 		ccdefault=32
+ 	# Check for GNU/BSD ar
+-	if ! ${AR} -V 2>/dev/null | egrep '(GNU|BSD) ar' > /dev/null ; then
+-		die Need GNU or BSD ar "(`type ${AR}`)"
++	if ! ${TOOLS_AR} -V 2>/dev/null | egrep '(GNU|BSD) ar' > /dev/null ; then
++		die Need GNU or BSD ar "(`type ${TOOLS_AR}`)"
+ 	fi
+ }
+ 
+@@ -223,7 +223,7 @@ doesitbuild ()
+ 
+ 	warnflags="-Wmissing-prototypes -Wstrict-prototypes -Wimplicit -Werror"
+ 	printf "${theprog}" \
+-	    | ${CC} ${warnflags} ${EXTRA_LDFLAGS} ${EXTRA_CFLAGS}	\
++	    | ${TOOLS_CC} ${warnflags} ${EXTRA_LDFLAGS} ${EXTRA_CFLAGS} -x c - -o /dev/null $* \
+ 		-x c - -o /dev/null $* > /dev/null 2>&1
+ }
+ 
+@@ -242,13 +242,7 @@ checkcheckout ()
+ 
+ checkcompiler ()
+ {
+-
+-	if ! ${KERNONLY}; then
+-		doesitbuild 'int main(void) {return 0;}\n' \
+-		    ${EXTRA_RUMPUSER} ${EXTRA_RUMPCOMMON}
+-		[ $? -eq 0 ] || ${TITANMODE} || \
+-		    die 'Probe cannot build a binary'
+-	fi
++	return
+ }
+ 
+ probe_rumpuserbits ()
+@@ -548,7 +542,8 @@ makemake ()
+ 	stage=$2
+ 	cmd=$3
+ 
+-	env CFLAGS= HOST_LDFLAGS=-L${OBJDIR} ./build.sh \
++	env CC=${BUILD_CC} AR=${BUILD_AR} NM=${BUILD_NM} OBJCOPY=${BUILD_OBJCOPY} \
++	    CFLAGS= BUILD_LDFLAGS=-L${OBJDIR} ./build.sh \
+ 	    -m ${MACHINE} -u \
+ 	    -D ${stage} -w ${wrapper} \
+ 	    -T ${BRTOOLDIR} -j ${JNUM} \
+@@ -708,10 +703,27 @@ evaltoolchain ()
+ 		rm -f ${OBJDIR}/canrun
  	fi
  
--	# step 2: if the user specified 32/64, try to establish if it will work
--	if ${THIRTYTWO} && [ "${ccdefault}" -ne 32 ] ; then
--		echo 'int main() {return 0;}' | ${CC} ${EXTRA_CFLAGS} -o /dev/null -x c - \
--		    ${EXTRA_RUMPUSER} ${EXTRA_RUMPCOMMON} > /dev/null 2>&1
--		[ $? -eq 0 ] || ${ANYTARGETISGOOD} || \
--		    die 'Gave -32, but probe shows it will not work.  Try -H?'
--	elif ${SIXTYFOUR} && [ "${ccdefault}" -ne 64 ] ; then
--		echo 'int main() {return 0;}' | ${CC} ${EXTRA_CFLAGS} -o /dev/null -x c - \
--		    ${EXTRA_RUMPUSER} ${EXTRA_RUMPCOMMON} > /dev/null 2>&1
--		[ $? -eq 0 ] || ${ANYTARGETISGOOD} || \
--		    die 'Gave -64, but probe shows it will not work.  Try -H?'
--	else
--		# not specified.  use compiler default
--		if [ "${ccdefault}" -eq 64 ]; then
--			SIXTYFOUR=true
++	# check for crossbuild with tools running on host
++	: ${BUILD_CC:=}
++	[ ${BUILD_CC} ] && HYBRIDBUILD=true
++
++	if ${HYBRIDBUILD}; then
++		: ${TOOLS_CC:=${BUILD_CC}}
++		: ${TOOLS_AR:=${BUILD_AR}}
++		: ${TOOLS_NM:=${BUILD_NM}}
++		: ${TOOLS_OBJCOPY:=${BUILD_OBJCOPY}}
++	else
++		: ${TOOLS_CC:=${CC}}
++		: ${TOOLS_AR:=${AR}}
++		: ${TOOLS_NM:=${NM}}
++		: ${TOOLS_OBJCOPY:=${OBJCOPY}}
++	fi
++
++
+ 	# Check for variant of compiler.
+ 	# XXX: why can't all cc's that are gcc actually tell me
+ 	#      that they're gcc with cc --version?!?
+-	ccver=$(${CC} --version)
++	ccver=$(${TOOLS_CC} --version)
+ 	if echo ${ccver} | grep -q 'Free Software Foundation'; then
+ 		CC_FLAVOR=gcc
+ 	elif echo ${ccver} | grep -q clang; then
+@@ -721,33 +733,21 @@ evaltoolchain ()
+ 		CC_FLAVOR=pcc
+ 		PCC='-V HAVE_PCC=1'
+ 	else
+-		die Unsupported \${CC} "(`type ${CC}`)"
++		die Unsupported \${TOOLS_CC} "(`type ${TOOLS_CC}`)"
+ 	fi
+ 
+-	# Check the arch we're building for so as to work out the necessary
+-	# NetBSD machine code we need to use.  First try -dumpmachine,
+-	# and if that works, be happy with it.  Not all compilers support
+-	# it (e.g. older versions of clang), so if that doesn't work,
+-	# try parsing the output of -v
+-	if ! CC_TARGET=$(${CC} -dumpmachine 2>/dev/null) ; then
+-		# first check "${CC} -v" ... just in case it fails, we want a
+-		# sensible return value instead of it being lost in the pipeline
+-		# (this is easier than adjusting IFS)
+-		if ${CC} -v >/dev/null 2>&1 ; then
+-			# then actually process the output of ${CC} -v
+-			CC_TARGET=$(LC_ALL=C ${CC} -v 2>&1 \
+-			    | sed -n 's/^Target: //p' )
+-			[ -z "${CC_TARGET}" ] \
+-			    && die failed to probe target of \"${CC}\"
 -		else
--			THIRTYTWO=true
+-			# this might be pcc
+-			${CC} -v 2>&1 | grep pcc > /dev/null || \
+-			    die \"${CC} -v failed\". Check \"${CC}\"
+-			CC_TARGET=$(${CC} -v 2>&1 \
+-			    | sed -n -e 's/^pcc.*for //' -e 's/,.*//p' )
 -		fi
--	fi
--
- 	TOOLABI=''
- 	case ${MACH_ARCH} in
- 	"amd64"|"x86_64")
-@@ -918,6 +910,8 @@ evaltarget ()
- 		MACHINE="evbarm"
- 		MACH_ARCH="arm"
- 		TOOLABI="elf"
-+		EXTRA_CFLAGS='-march=armv7-a'
-+		EXTRA_AFLAGS='-march=armv7-a'
- 		probearm
++	MACH_ARCH=$(echo ${CC_TARGET} | sed 's/.*-\(.*\)-.*/\1/' )
++	echo "MACH_ARCH cc ${MACH_ARCH}"
++
++
++	if [ "${MACH_ARCH}" = 'x86' ] ; then
++		CC_TARGET=genode-x86
++		MACH_ARCH=x86_64
++	elif [ "${MACH_ARCH}" = 'arm' ] ; then
++		CC_TARGET=genode-arm
++	else
++		die Unsupported architectur ${MACH_ARCH}
+ 	fi
+-	MACH_ARCH=$(echo ${CC_TARGET} | sed 's/-.*//' )
+ 
+ 	# Set names of tools we're going to use.  try to guess them
+ 	# for common scenarios
+@@ -767,6 +767,9 @@ evaltoolchain ()
+ 	done
+ 
+ 	case ${CC_TARGET} in
++	"genode")
++		RUMPKERN_UNDEF='-U__FreeBSD__'
++		;;
+ 	*-linux*)
+ 		RUMPKERN_UNDEF='-Ulinux -U__linux -U__linux__ -U__gnu_linux__'
+ 		cppdefines _BIG_ENDIAN \
+@@ -793,10 +796,10 @@ evaltoolchain ()
+ 		${TITANMODE} || die ELF required as target object format
+ 	fi
+ 
+-	if cppdefines __LP64__; then
+-		THIRTYTWO=false
+-	else
++	if ${TARGET_IS_32BIT}; then
+ 		THIRTYTWO=true
++	else
++		THIRTYTWO=false
+ 	fi
+ 
+ 	# The compiler cannot do %zd/u warnings if the NetBSD kernel
+@@ -857,6 +860,9 @@ evalplatform ()
+ 		echo '>> Mach-O object format used by OS X is not yet supported'
+ 		target_supported=false
  		;;
- 	"sparc")
++	genode-*)
++		TARGET=genode
++		;;
+ 	*)
+ 		target_supported=false
+ 		;;
+@@ -867,8 +873,8 @@ evalplatform ()
+ 	fi
+ 
+ 	# does target support __thread.  if yes, optimize curlwp
+-	doesitbuild '__thread int lanka; int main(void) {return lanka;}\n'
+-	[ $? -eq 0 ] && RUMP_CURLWP=__thread
++#	doesitbuild '__thread int lanka; int main(void) {return lanka;}\n'
++#	[ $? -eq 0 ] && RUMP_CURLWP=__thread
+ }
+ 
+ # ARM targets require a few extra checks
+@@ -880,8 +886,8 @@ probearm ()
+ 		MACHINE="evbearm-el"
+ 		MACH_ARCH="arm"
+ 	else
+-		MACHINE="evbearm-eb"
+-		MACH_ARCH="armeb"
++		MACHINE="evbearm"
++		MACH_ARCH="arm"
+ 	fi
+ 
+ 	TOOLABI="elf-eabi"
+@@ -893,6 +899,11 @@ probearm ()
+ 	if cppdefines __VFP_FP__; then
+ 		MKSOFTFLOAT=no
+ 	fi
++
++	EXTRA_CFLAGS='-march=armv7-a'
++	EXTRA_AFLAGS='-march=armv7-a'
++	EXTRA_LDFLAGS='-nostdlib'
++	appendvar EXTRA_CWARNFLAGS -Wno-format
+ }
+ 
+ # aarch64 requires a few checks
+@@ -962,6 +973,9 @@ evalmachine ()
+ 			MACHINE="i386"
+ 			MACH_ARCH="i486"
+ 			TOOLABI="elf"
++			appendvar EXTRA_CFLAGS -m32
++			appendvar EXTRA_LDFLAGS -m32
++			appendvar EXTRA_AFLAGS -m32
+ 		else
+ 			MACHINE="amd64"
+ 			MACH_ARCH="x86_64"
+@@ -1044,13 +1058,17 @@ parseargs ()
+ 	debugginess=0
+ 	KERNONLY=false
+ 	NATIVENETBSD=false
++	TARGET_IS_32BIT=false
+ 	OBJDIR=./obj
+ 	DESTDIR=./rump
+ 	SRCDIR=./src
+ 	JNUM=4
+ 
+-	while getopts 'd:DhHj:kNo:qrs:T:V:F:' opt; do
++	while getopts '3:d:DhHj:kNo:qrs:T:V:F:' opt; do
+ 		case "$opt" in
++		3)
++			TARGET_IS_32BIT=true
++			;;
+ 		d)
+ 			DESTDIR=${OPTARG}
+ 			;;
diff --git a/repos/dde_rump/patches/lock.patch b/repos/dde_rump/patches/lock.patch
index 2554da77ad..8a6f2cc244 100644
--- a/repos/dde_rump/patches/lock.patch
+++ b/repos/dde_rump/patches/lock.patch
@@ -1,13 +1,15 @@
-diff --git a/src/sys/arch/arm/include/lock.h b/sys/arch/arm/include/lock.h
-index c52a44f..3b4ba93 100644
+diff --git a/sys/arch/arm/include/lock.h b/sys/arch/arm/include/lock.h
+index ba612d5..8e0e2f3 100644
 --- a/src/sys/arch/arm/include/lock.h
 +++ b/src/sys/arch/arm/include/lock.h
-@@ -119,8 +119,13 @@ __swp(__cpu_simple_lock_t __val, volatile __cpu_simple_lock_t *__ptr)
- 	return __rv;
- #else
+@@ -105,8 +105,18 @@ static __inline unsigned char
+ __swp(unsigned char __val, __cpu_simple_lock_t *__ptr)
+ {
  	uint32_t __val32;
--	__asm volatile("swpb %0, %1, [%2]"
--	    : "=&r" (__val32) : "r" (__val), "r" (__ptr) : "memory");
++#ifdef _ARM_ARCH_6
+ 	__asm volatile("swpb	%0, %1, [%2]"
+ 	    : "=&r" (__val32) : "r" (__val), "r" (__ptr) : "memory");
++#else
 +	__asm volatile(" 1:                  \n"
 +	               "  ldrexb %0, [%2]    \n"
 +	               "  strexb r0, %1, [%2]\n"
@@ -15,6 +17,7 @@ index c52a44f..3b4ba93 100644
 +	               "  bne 1b             \n"
 +	               : "=&r" (__val32) : "r" (__val), "r" (__ptr)
 +	               : "memory", "r0");
++#endif
  	return __val32;
- #endif
  }
+ #else
diff --git a/repos/dde_rump/patches/mk.patch b/repos/dde_rump/patches/mk.patch
index 1d7de4c908..122fb7d077 100644
--- a/repos/dde_rump/patches/mk.patch
+++ b/repos/dde_rump/patches/mk.patch
@@ -1,8 +1,8 @@
-diff --git a/share/mk/bsd.own.mk b/share/mk/bsd.own.mk
-index 57f4909..36235db 100644
+diff --git a/src/share/mk/bsd.own.mk b/src/share/mk/bsd.own.mk
+index 9bdc7c7..518440e 100644
 --- a/src/share/mk/bsd.own.mk
 +++ b/src/share/mk/bsd.own.mk
-@@ -1045,7 +1045,7 @@ INSTPRIV?=	${INSTPRIV.unpriv} -N ${NETBSDSRCDIR}/etc
+@@ -1155,7 +1155,7 @@ INSTPRIV?=	${INSTPRIV.unpriv} -N ${NETBSDSRCDIR}/etc
  STRIPFLAG?=	
  
  .if ${NEED_OWN_INSTALL_TARGET} != "no"
diff --git a/repos/dde_rump/ports/dde_rump.hash b/repos/dde_rump/ports/dde_rump.hash
index 9bcaa9a429..89ee33e5b2 100644
--- a/repos/dde_rump/ports/dde_rump.hash
+++ b/repos/dde_rump/ports/dde_rump.hash
@@ -1 +1 @@
-7cc23ebea58569f4eaec723a42009428ab662918
+d3121f30954b15d2da548e8361dbaf419e6124b5
diff --git a/repos/dde_rump/ports/dde_rump.port b/repos/dde_rump/ports/dde_rump.port
index 3ecd50ef4a..a8bdd7fa29 100644
--- a/repos/dde_rump/ports/dde_rump.port
+++ b/repos/dde_rump/ports/dde_rump.port
@@ -2,26 +2,30 @@ LICENSE   := BSD
 VERSION   := git
 DOWNLOADS := rump.git nblibs.git
 
-URL(rump) := https://github.com/anttikantee/buildrump.sh.git
-REV(rump) := d604845baafa110945cb54a2d9607e6f435c6027
+URL(rump) := https://github.com/rumpkernel/buildrump.sh.git
+REV(rump) := fd4bdac4ad6357a36b9a0af6abde02bf3bb42232
 DIR(rump) := src/lib/dde_rump
 
-URL(nblibs) := https://github.com/rumpkernel/netbsd-userspace-src.git
-REV(nblibs) := b86122315f338042d06ad83ac5bd763a5dbd0c00
+URL(nblibs) := https://github.com/rumpkernel/src-netbsd.git
+REV(nblibs) := b71ee7667ea9904c28b089feadc594a62f406bd5
 DIR(nblibs) := src/lib/dde_rump/nblibs
 
 PATCHES   := $(shell find $(REP_DIR)/patches/*.patch)
 PATCH_OPT := -N -d ${DIR(rump)} -p1
 
-GIT_NETBSD_COMMIT := ff70642c9d7a8fb4b3242b30de2efc1fd8ad9ad4
+GIT_NETBSD_COMMIT := 0875d49ae93a8101d5321b7a73983daee5c1b581
+NETBSD_SRC        := src/lib/dde_rump/src
+
 
 # checkout NetBSD sources
 default: checkout_src
 checkout_src: $(DOWNLOADS)
 	@$(MSG_PREFIX)"checkout NetBSD src "
+	$(VERBOSE)if [ -d "$(NETBSD_SRC)/.git" ]; then cd $(NETBSD_SRC) && git checkout -f; fi
 	$(VERBOSE)src/lib/dde_rump/checkout.sh git src/lib/dde_rump/src
-	$(VERBOSE)cd src/lib/dde_rump/src && git reset --hard $(GIT_NETBSD_COMMIT)
-	$(VERBOSE)ln -s ../src/common src/lib/dde_rump/nblibs/common
+	$(VERBOSE)cd $(NETBSD_SRC) && git reset --hard $(GIT_NETBSD_COMMIT)
+	$(VERBOSE)ln -sf ../src/common src/lib/dde_rump/nblibs/common
+
 
 DIRS := include/rump
 DIR_CONTENT(include/rump) := src/lib/dde_rump/src/sys/rump/include/rump/*.h
diff --git a/repos/dde_rump/run/rump_fat.run b/repos/dde_rump/run/rump_fat.run
index 5e53a1a0a4..8a1fcbe23a 100644
--- a/repos/dde_rump/run/rump_fat.run
+++ b/repos/dde_rump/run/rump_fat.run
@@ -1,8 +1,8 @@
 #
 # Check used commands
 #
-set mkfs.vfat [check_installed mkfs.vfat]
-set dd        [check_installed dd]
+set mkfs [check_installed mkfs.vfat]
+set dd   [check_installed dd]
 
 #
 # Build
@@ -21,7 +21,7 @@ build $build_components
 # Build FAT-file-system image
 #
 catch { exec $dd if=/dev/zero of=bin/fs.raw bs=1M count=16 }
-catch { exec $mkfs.vfat -F16 bin/fs.raw }
+catch { exec $mkfs -F16 bin/fs.raw }
 
 create_boot_directory
 
@@ -88,7 +88,7 @@ set boot_modules {
 
 build_boot_image $boot_modules
 
-append qemu_args " -m 256 -nographic"
+append qemu_args " -m 256 -nographic "
 
 run_genode_until {.*child "test-libc_vfs" exited with exit value 0.*} 60
 
diff --git a/repos/dde_rump/src/lib/rump/dummies.cc b/repos/dde_rump/src/lib/rump/dummies.cc
index bcce8fa0f3..6abeb8367b 100644
--- a/repos/dde_rump/src/lib/rump/dummies.cc
+++ b/repos/dde_rump/src/lib/rump/dummies.cc
@@ -46,7 +46,6 @@ DUMMY(-1, rumpuser_sp_copyoutstr)
 DUMMY(-1, rumpuser_sp_fini)
 DUMMY(-1, rumpuser_sp_init)
 DUMMY(-1, rumpuser_sp_raise)
-DUMMY(-1, rumpuser_thread_exit)
 DUMMY(-1, rumpuser_thread_join)
 DUMMY(-1, rumpuser_unmap)
 } /* extern "C" */
diff --git a/repos/dde_rump/src/lib/rump/hypercall.cc b/repos/dde_rump/src/lib/rump/hypercall.cc
index 6f5d099adb..6d2c7ba664 100644
--- a/repos/dde_rump/src/lib/rump/hypercall.cc
+++ b/repos/dde_rump/src/lib/rump/hypercall.cc
@@ -113,6 +113,13 @@ int rumpuser_thread_create(func f, void *arg, const char *name,
 	return 0;
 }
 
+
+void rumpuser_thread_exit()
+{
+	Genode::sleep_forever();
+}
+
+
 int errno;
 void rumpuser_seterrno(int e) { errno = e; }
 
diff --git a/repos/dde_rump/src/lib/rump/io.cc b/repos/dde_rump/src/lib/rump/io.cc
index 9760dacba5..e1f02a71cb 100644
--- a/repos/dde_rump/src/lib/rump/io.cc
+++ b/repos/dde_rump/src/lib/rump/io.cc
@@ -262,14 +262,16 @@ static Backend *backend()
 
 	if (_b)
 		return _b;
+
+	int nlocks;
+	rumpkern_unsched(&nlocks, 0);
 	try {
-		int nlocks;
-		rumpkern_unsched(&nlocks, 0);
 		_b = new(Genode::env()->heap())Backend();
-		rumpkern_sched(nlocks, 0);
 	} catch (Genode::Parent::Service_denied) {
 		PERR("Opening block session denied!");
 	}
+	rumpkern_sched(nlocks, 0);
+
 	return _b;
 }
 
diff --git a/repos/dde_rump/src/server/rump_fs/file_system.cc b/repos/dde_rump/src/server/rump_fs/file_system.cc
index 6b5d132c25..98436ed7ab 100644
--- a/repos/dde_rump/src/server/rump_fs/file_system.cc
+++ b/repos/dde_rump/src/server/rump_fs/file_system.cc
@@ -38,8 +38,7 @@ namespace File_system {
 
 static char const *fs_types[] = { RUMP_MOUNT_CD9660, RUMP_MOUNT_EXT2FS,
                                   RUMP_MOUNT_FFS, RUMP_MOUNT_MSDOS,
-                                  RUMP_MOUNT_NFS, RUMP_MOUNT_NTFS,
-                                  RUMP_MOUNT_SMBFS, RUMP_MOUNT_UDF, 0 };
+                                  RUMP_MOUNT_NTFS, RUMP_MOUNT_UDF, 0 };
 
 static char _fs_type[10];
 static bool _supports_symlinks;
diff --git a/repos/dde_rump/src/server/rump_fs/main.cc b/repos/dde_rump/src/server/rump_fs/main.cc
index 4e30e74e73..98370f24bb 100644
--- a/repos/dde_rump/src/server/rump_fs/main.cc
+++ b/repos/dde_rump/src/server/rump_fs/main.cc
@@ -197,7 +197,7 @@ class File_system::Session_component : public Session_rpc_object
 		Symlink_handle symlink(Dir_handle dir_handle, Name const &name, bool create)
 		{
 			if (!File_system::supports_symlinks())
-				return Symlink_handle();
+				throw Permission_denied();
 
 			if (!valid_name(name.string()))
 				throw Invalid_name();