Add --enable-asan and --enable-ubsan switches

`configure` now accepts `--enable-asan` and `--enable-ubsan` switches
which results in passing `-fsanitize=address`
and `-fsanitize=undefined`, respectively, to the compiler. Those
flags are enabled in GitHub workflows for ZTS and zloop. Errors
reported by both instrumentations are corrected, except for:

- Memory leak reporting is (temporarily) suppressed. The cost of
  fixing them is relatively high compared to the gains.

- Checksum computing functions in `module/zcommon/zfs_fletcher*`
  have UBSan errors suppressed. It is completely impractical
  to enforce 64-byte payload alignment there due to performance
  impact.

- There's no ASan heap poisoning in `module/zstd/lib/zstd.c`. A custom
  memory allocator is used there rendering that measure
  unfeasible.

- Memory leaks detection has to be suppressed for `cmd/zvol_id`.
  `zvol_id` is run by udev with the help of `ptrace(2)`. Tracing is
  incompatible with memory leaks detection.

Reviewed-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: szubersk <szuberskidamian@gmail.com>
Closes #12928

.github/workflows/zfs-tests-functional.yml

@@ -32,7 +32,7 @@ jobs:
         sh autogen.sh
     - name: Configure
       run: |
-        ./configure --enable-debug --enable-debuginfo
+        ./configure --enable-debug --enable-debuginfo --enable-asan --enable-ubsan
     - name: Make
       run: |
         make --no-print-directory -s pkg-utils pkg-kmod

.github/workflows/zfs-tests-sanity.yml

@@ -28,7 +28,7 @@ jobs:
         sh autogen.sh
     - name: Configure
       run: |
-        ./configure --enable-debug --enable-debuginfo
+        ./configure --enable-debug --enable-debuginfo --enable-asan --enable-ubsan
     - name: Make
       run: |
         make --no-print-directory -s pkg-utils pkg-kmod

.github/workflows/zloop.yml

@@ -28,7 +28,7 @@ jobs:
         sh autogen.sh
     - name: Configure
       run: |
-        ./configure --enable-debug --enable-debuginfo
+        ./configure --enable-debug --enable-debuginfo --enable-asan --enable-ubsan
     - name: Make
       run: |
         make --no-print-directory -s pkg-utils pkg-kmod

cmd/zdb/zdb.c

@@ -8654,7 +8654,7 @@ main(int argc, char **argv)
 			dump_opt[c] += verbose;
 	}
 
-	libspl_assert_ok = (dump_opt['A'] == 1) || (dump_opt['A'] > 2);
+	libspl_set_assert_ok((dump_opt['A'] == 1) || (dump_opt['A'] > 2));
 	zfs_recover = (dump_opt['A'] > 1);
 
 	argc -= optind;

cmd/zfs/zfs_main.c

@@ -575,8 +575,9 @@ usage(boolean_t requested)
 
 		(void) fprintf(fp, gettext("\nSizes are specified in bytes "
 		    "with standard units such as K, M, G, etc.\n"));
-		(void) fprintf(fp, gettext("\nUser-defined properties can "
+		(void) fprintf(fp, "%s", gettext("\nUser-defined properties "
-		    "be specified by using a name containing a colon (:).\n"));
+		    "can be specified by using a name containing a colon "
+		    "(:).\n"));
 		(void) fprintf(fp, gettext("\nThe {user|group|project}"
 		    "[obj]{used|quota}@ properties must be appended with\n"
 		    "a user|group|project specifier of one of these forms:\n"

cmd/zpool/zpool_main.c

@@ -1760,17 +1760,19 @@ zpool_do_create(int argc, char **argv)
 			    "feature@%s", feat->fi_uname);
 
 			if (!nvlist_lookup_string(props, propname, &propval)) {
-				if (strcmp(propval, ZFS_FEATURE_DISABLED) == 0)
+				if (strcmp(propval,
+				    ZFS_FEATURE_DISABLED) == 0) {
 					(void) nvlist_remove_all(props,
 					    propname);
-				if (strcmp(propval,
+				} else if (strcmp(propval,
 				    ZFS_FEATURE_ENABLED) == 0 &&
-				    !requested_features[i])
+				    !requested_features[i]) {
 					(void) fprintf(stderr, gettext(
 					    "Warning: feature \"%s\" enabled "
 					    "but is not in specified "
 					    "'compatibility' feature set.\n"),
 					    feat->fi_uname);
+				}
 			} else if (
 			    enable_pool_features &&
 			    feat->fi_zfs_mod_supported &&
@@ -9210,7 +9212,7 @@ zpool_do_upgrade(int argc, char **argv)
 		}
 	}
 
-	(void) printf(gettext("This system supports ZFS pool feature "
+	(void) printf("%s", gettext("This system supports ZFS pool feature "
 	    "flags.\n\n"));
 	if (showversions) {
 		int i;

cmd/ztest/ztest.c

@@ -631,6 +631,8 @@ fatal(int do_perror, char *message, ...)
 
 	(void) fflush(stdout);
 	buf = umem_alloc(FATAL_MSG_SZ, UMEM_NOFAIL);
+	if (buf == NULL)
+		goto out;
 
 	va_start(args, message);
 	(void) sprintf(buf, "ztest: ");
@@ -644,6 +646,7 @@ fatal(int do_perror, char *message, ...)
 	(void) fprintf(stderr, "%s\n", buf);
 	fatal_msg = buf;			/* to ease debugging */
 
+out:
 	if (ztest_dump_core)
 		abort();
 	else

cmd/zvol_id/zvol_id_main.c

@@ -35,6 +35,21 @@
 #include <sys/zfs_znode.h>
 #include <sys/fs/zfs.h>
 
+#if defined(ZFS_ASAN_ENABLED)
+/*
+ * zvol_id is invoked by udev with the help of ptrace()
+ * making sanitized binary with leak detection croak
+ * because of tracing mechanisms collision
+ */
+extern const char *__asan_default_options(void);
+
+const char *__asan_default_options(void) {
+	return ("abort_on_error=true:halt_on_error=true:"
+		"allocator_may_return_null=true:disable_coredump=false:"
+		"detect_stack_use_after_return=true:detect_leaks=false");
+}
+#endif
+
 static int
 ioctl_get_msg(char *var, int fd)
 {

config/Rules.am

@@ -29,6 +29,7 @@ AM_CFLAGS += $(NO_OMIT_FRAME_POINTER)
 AM_CFLAGS += $(IMPLICIT_FALLTHROUGH)
 AM_CFLAGS += $(DEBUG_CFLAGS)
 AM_CFLAGS += $(ASAN_CFLAGS)
+AM_CFLAGS += $(UBSAN_CFLAGS)
 AM_CFLAGS += $(CODE_COVERAGE_CFLAGS) $(NO_FORMAT_ZERO_LENGTH)
 if BUILD_FREEBSD
 AM_CFLAGS += -fPIC -Werror -Wno-unknown-pragmas -Wno-enum-conversion
@@ -58,8 +59,17 @@ AM_CPPFLAGS += -D"__xpg_basename(...)=__xpg_basename(__VA_ARGS__) __attribute__(
 AM_CPPFLAGS += -D"basename(...)=basename(__VA_ARGS__) __attribute__((deprecated(\"basename(3) is underspecified. Use zfs_basename() instead!\")))"
 AM_CPPFLAGS += -D"dirname(...)=dirname(__VA_ARGS__) __attribute__((deprecated(\"dirname(3) is underspecified. Use zfs_dirnamelen() instead!\")))"
 
+if ASAN_ENABLED
+AM_CPPFLAGS += -DZFS_ASAN_ENABLED
+endif
+
+if UBSAN_ENABLED
+AM_CPPFLAGS += -DZFS_UBSAN_ENABLED
+endif
+
 AM_LDFLAGS  = $(DEBUG_LDFLAGS)
 AM_LDFLAGS += $(ASAN_LDFLAGS)
+AM_LDFLAGS += $(UBSAN_LDFLAGS)
 
 if BUILD_FREEBSD
 AM_LDFLAGS += -fstack-protector-strong -shared

config/Substfiles.am

@@ -17,7 +17,9 @@ subst_sed_cmd = \
 	-e 's|@DEFAULT_INIT_NFS_SERVER[@]|$(DEFAULT_INIT_NFS_SERVER)|g' \
 	-e 's|@DEFAULT_INIT_SHELL[@]|$(DEFAULT_INIT_SHELL)|g' \
 	-e 's|@LIBFETCH_DYNAMIC[@]|$(LIBFETCH_DYNAMIC)|g' \
-	-e 's|@LIBFETCH_SONAME[@]|$(LIBFETCH_SONAME)|g'
+	-e 's|@LIBFETCH_SONAME[@]|$(LIBFETCH_SONAME)|g' \
+	-e 's|@ASAN_ENABLED[@]|$(ASAN_ENABLED)|g' \
+	-e 's|@UBSAN_ENABLED[@]|$(UBSAN_ENABLED)|g'
 
 SUBSTFILES =
 CLEANFILES = $(SUBSTFILES)

config/always-compiler-options.m4

@@ -45,6 +45,53 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_CC_ASAN], [
 	AC_SUBST([ASAN_ZFS])
 ])
 
+dnl #
+dnl # Enabled -fsanitize=undefined if supported by gcc.
+dnl #
+dnl # LDFLAGS needs -fsanitize=undefined at all times so libraries compiled with
+dnl # it will be linked successfully. CFLAGS will vary by binary being built.
+dnl #
+dnl # The UBSAN_OPTIONS environment variable can be used to further control
+dnl # the behavior of binaries and libraries build with -fsanitize=undefined.
+dnl #
+AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_CC_UBSAN], [
+	AC_MSG_CHECKING([whether to build with -fsanitize=undefined support])
+	AC_ARG_ENABLE([ubsan],
+		[AS_HELP_STRING([--enable-ubsan],
+		[Enable -fsanitize=undefined support  @<:@default=no@:>@])],
+		[],
+		[enable_ubsan=no])
+
+	AM_CONDITIONAL([UBSAN_ENABLED], [test x$enable_ubsan = xyes])
+	AC_SUBST([UBSAN_ENABLED], [$enable_ubsan])
+	AC_MSG_RESULT($enable_ubsan)
+
+	AS_IF([ test "$enable_ubsan" = "yes" ], [
+		AC_MSG_CHECKING([whether $CC supports -fsanitize=undefined])
+		saved_cflags="$CFLAGS"
+		CFLAGS="$CFLAGS -Werror -fsanitize=undefined"
+		AC_LINK_IFELSE([
+			AC_LANG_SOURCE([[ int main() { return 0; } ]])
+		], [
+			UBSAN_CFLAGS="-fsanitize=undefined"
+			UBSAN_LDFLAGS="-fsanitize=undefined"
+			UBSAN_ZFS="_with_ubsan"
+			AC_MSG_RESULT([yes])
+		], [
+			AC_MSG_ERROR([$CC does not support -fsanitize=undefined])
+		])
+		CFLAGS="$saved_cflags"
+	], [
+		UBSAN_CFLAGS=""
+		UBSAN_LDFLAGS=""
+		UBSAN_ZFS="_without_ubsan"
+	])
+
+	AC_SUBST([UBSAN_CFLAGS])
+	AC_SUBST([UBSAN_LDFLAGS])
+	AC_SUBST([UBSAN_ZFS])
+])
+
 dnl #
 dnl # Check if gcc supports -Wframe-larger-than=<size> option.
 dnl #

config/zfs-build.m4

@@ -218,6 +218,7 @@ AC_DEFUN([ZFS_AC_CONFIG_ALWAYS], [
 	ZFS_AC_CONFIG_ALWAYS_CC_NO_OMIT_FRAME_POINTER
 	ZFS_AC_CONFIG_ALWAYS_CC_NO_IPA_SRA
 	ZFS_AC_CONFIG_ALWAYS_CC_ASAN
+	ZFS_AC_CONFIG_ALWAYS_CC_UBSAN
 	ZFS_AC_CONFIG_ALWAYS_TOOLCHAIN_SIMD
 	ZFS_AC_CONFIG_ALWAYS_SYSTEM
 	ZFS_AC_CONFIG_ALWAYS_ARCH
@@ -323,6 +324,7 @@ AC_DEFUN([ZFS_AC_RPM], [
 	RPM_DEFINE_COMMON=${RPM_DEFINE_COMMON}' --define "$(DEBUG_KMEM_ZFS) 1"'
 	RPM_DEFINE_COMMON=${RPM_DEFINE_COMMON}' --define "$(DEBUG_KMEM_TRACKING_ZFS) 1"'
 	RPM_DEFINE_COMMON=${RPM_DEFINE_COMMON}' --define "$(ASAN_ZFS) 1"'
+	RPM_DEFINE_COMMON=${RPM_DEFINE_COMMON}' --define "$(UBSAN_ZFS) 1"'
 
 	RPM_DEFINE_UTIL=' --define "_initconfdir $(initconfdir)"'
 

include/zfs_fletcher.h

@@ -160,4 +160,20 @@ _ZFS_FLETCHER_H const fletcher_4_ops_t fletcher_4_aarch64_neon_ops;
 }
 #endif
 
+#if	defined(ZFS_UBSAN_ENABLED)
+#if	defined(__has_attribute)
+#if	__has_attribute(no_sanitize_undefined)
+#define	ZFS_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize_undefined))
+#elif	__has_attribute(no_sanitize)
+#define	ZFS_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined")))
+#else
+#error	"Compiler has to support attribute "
+	"`no_sanitize_undefined` or `no_sanitize(\"undefined\")`"
+	"when compiling with UBSan enabled"
+#endif	/* __has_attribute(no_sanitize_undefined) */
+#endif	/* defined(__has_attribute) */
+#else
+#define	ZFS_NO_SANITIZE_UNDEFINED
+#endif	/* defined(ZFS_UBSAN_ENABLED) */
+
 #endif	/* _ZFS_FLETCHER_H */

lib/libnvpair/libnvpair.abi

@@ -78,6 +78,7 @@
     <elf-symbol name='fnvpair_value_uint64' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='fnvpair_value_uint8' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libspl_assertf' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='libspl_set_assert_ok' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='nv_alloc_fini' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='nv_alloc_init' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='nv_alloc_reset' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -230,7 +231,6 @@
     <elf-symbol name='nvpair_value_uint8_array' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
   </elf-function-symbols>
   <elf-variable-symbols>
-    <elf-symbol name='libspl_assert_ok' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='nv_alloc_nosleep' size='8' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='nv_fixed_ops' size='8' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
   </elf-variable-symbols>
@@ -2793,7 +2793,10 @@
     </function-type>
   </abi-instr>
   <abi-instr address-size='64' path='assert.c' language='LANG_C99'>
-    <var-decl name='libspl_assert_ok' type-id='95e97e5e' mangled-name='libspl_assert_ok' visibility='default' elf-symbol-id='libspl_assert_ok'/>
+    <function-decl name='libspl_set_assert_ok' mangled-name='libspl_set_assert_ok' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_set_assert_ok'>
+      <parameter type-id='f58c8277' name='val'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
     <function-decl name='libspl_assertf' mangled-name='libspl_assertf' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_assertf'>
       <parameter type-id='80f4b756' name='file'/>
       <parameter type-id='80f4b756' name='func'/>

lib/libspl/assert.c

@@ -25,7 +25,13 @@
 
 #include <assert.h>
 
-int libspl_assert_ok = 0;
+static boolean_t libspl_assert_ok = B_FALSE;
+
+void
+libspl_set_assert_ok(boolean_t val)
+{
+	libspl_assert_ok = val;
+}
 
 /* printf version of libspl_assert */
 void

lib/libspl/include/assert.h

@@ -32,9 +32,10 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>
+#include <sys/types.h>
 
 /* Set to non-zero to avoid abort()ing on an assertion failure */
-extern int libspl_assert_ok;
+extern void libspl_set_assert_ok(boolean_t val);
 
 /* printf version of libspl_assert */
 extern void libspl_assertf(const char *file, const char *func, int line,

lib/libuutil/libuutil.abi

@@ -152,6 +152,7 @@
     <elf-symbol name='getmntany' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='getzoneid' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libspl_assertf' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='libspl_set_assert_ok' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='list_create' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='list_destroy' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='list_head' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -255,7 +256,6 @@
     <elf-symbol name='uu_zalloc' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
   </elf-function-symbols>
   <elf-variable-symbols>
-    <elf-symbol name='libspl_assert_ok' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='uu_exit_fatal_value' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='uu_exit_ok_value' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='uu_exit_usage_value' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -365,7 +365,10 @@
     </function-type>
   </abi-instr>
   <abi-instr address-size='64' path='assert.c' language='LANG_C99'>
-    <var-decl name='libspl_assert_ok' type-id='95e97e5e' mangled-name='libspl_assert_ok' visibility='default' elf-symbol-id='libspl_assert_ok'/>
+    <function-decl name='libspl_set_assert_ok' mangled-name='libspl_set_assert_ok' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_set_assert_ok'>
+      <parameter type-id='f58c8277' name='val'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
     <function-decl name='libspl_assertf' mangled-name='libspl_assertf' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_assertf'>
       <parameter type-id='80f4b756' name='file'/>
       <parameter type-id='80f4b756' name='func'/>

lib/libuutil/uu_pname.c

@@ -88,6 +88,7 @@ uu_warn_internal(int err, const char *format, va_list alist)
 	if (pname != NULL)
 		(void) fprintf(stderr, "%s: ", pname);
 
+	if (format != NULL)
 		(void) vfprintf(stderr, format, alist);
 
 	if (strrchr(format, '\n') == NULL)

lib/libzfs/libzfs.abi

@@ -191,6 +191,7 @@
     <elf-symbol name='is_mounted' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='is_mpath_whole_disk' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libspl_assertf' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='libspl_set_assert_ok' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libzfs_add_handle' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libzfs_envvar_is_set' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libzfs_errno' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -593,7 +594,6 @@
     <elf-symbol name='fletcher_4_ssse3_ops' size='64' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='fletcher_4_superscalar4_ops' size='64' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='fletcher_4_superscalar_ops' size='64' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
-    <elf-symbol name='libspl_assert_ok' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libzfs_config_ops' size='16' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='spa_feature_table' size='1904' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='zfeature_checks_disable' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -906,7 +906,10 @@
     <var-decl name='smb_shares' type-id='a3e5c654' visibility='default'/>
   </abi-instr>
   <abi-instr address-size='64' path='assert.c' language='LANG_C99'>
-    <var-decl name='libspl_assert_ok' type-id='95e97e5e' mangled-name='libspl_assert_ok' visibility='default' elf-symbol-id='libspl_assert_ok'/>
+    <function-decl name='libspl_set_assert_ok' mangled-name='libspl_set_assert_ok' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_set_assert_ok'>
+      <parameter type-id='f58c8277' name='val'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
     <function-decl name='libspl_assertf' mangled-name='libspl_assertf' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_assertf'>
       <parameter type-id='80f4b756' name='file'/>
       <parameter type-id='80f4b756' name='func'/>

lib/libzfs/libzfs_mount.c

@@ -1611,6 +1611,7 @@ zpool_disable_datasets(zpool_handle_t *zhp, boolean_t force)
 	 * At this point, we have the entire list of filesystems, so sort it by
 	 * mountpoint.
 	 */
+	if (used != 0)
 		qsort(sets, used, sizeof (struct sets_s), mountpoint_compare);
 
 	/*

lib/libzfs/libzfs_sendrecv.c

@@ -2899,22 +2899,24 @@ recv_destroy(libzfs_handle_t *hdl, const char *name, int baselen,
 	zhp = zfs_open(hdl, name, ZFS_TYPE_DATASET);
 	if (zhp == NULL)
 		return (-1);
-	clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
+	zfs_type_t type = zfs_get_type(zhp);
-	    flags->force ? MS_FORCE : 0);
+	if (type == ZFS_TYPE_SNAPSHOT &&
-	if (zfs_get_type(zhp) == ZFS_TYPE_SNAPSHOT &&
 	    zfs_spa_version(zhp, &spa_version) == 0 &&
 	    spa_version >= SPA_VERSION_USERREFS)
 		defer = B_TRUE;
+	clp = changelist_gather(zhp, ZFS_PROP_NAME, 0,
+	    flags->force ? MS_FORCE : 0);
 	zfs_close(zhp);
 	if (clp == NULL)
 		return (-1);
+
 	err = changelist_prefix(clp);
 	if (err)
 		return (err);
 
 	if (flags->verbose)
 		(void) printf("attempting destroy %s\n", name);
-	if (zhp->zfs_type == ZFS_TYPE_SNAPSHOT) {
+	if (type == ZFS_TYPE_SNAPSHOT) {
 		nvlist_t *nv = fnvlist_alloc();
 		fnvlist_add_boolean(nv, name);
 		err = lzc_destroy_snaps(nv, defer, NULL);
@@ -4075,8 +4077,8 @@ zfs_setup_cmdline_props(libzfs_handle_t *hdl, zfs_type_t type,
 			 * properties: if we're asked to exclude this kind of
 			 * values we remove them from "recvprops" input nvlist.
 			 */
-			if (!zfs_prop_inheritable(prop) &&
+			if (!zfs_prop_user(name) && /* can be inherited too */
-			    !zfs_prop_user(name) && /* can be inherited too */
+			    !zfs_prop_inheritable(prop) &&
 			    nvlist_exists(recvprops, newname))
 				fnvlist_remove(recvprops, newname);
 			else

lib/libzfs_core/libzfs_core.abi

@@ -135,6 +135,7 @@
     <elf-symbol name='getmntany' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='getzoneid' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libspl_assertf' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
+    <elf-symbol name='libspl_set_assert_ok' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libzfs_core_fini' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libzfs_core_init' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='list_create' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
@@ -215,11 +216,13 @@
     <elf-symbol name='strlcpy' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
   </elf-function-symbols>
   <elf-variable-symbols>
-    <elf-symbol name='libspl_assert_ok' size='4' type='object-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
   </elf-variable-symbols>
   <abi-instr address-size='64' path='assert.c' language='LANG_C99'>
+    <function-decl name='libspl_set_assert_ok' mangled-name='libspl_set_assert_ok' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_set_assert_ok'>
+      <parameter type-id='f58c8277' name='val'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
     <type-decl name='variadic parameter type' id='2c1145c5'/>
-    <var-decl name='libspl_assert_ok' type-id='95e97e5e' mangled-name='libspl_assert_ok' visibility='default' elf-symbol-id='libspl_assert_ok'/>
     <function-decl name='libspl_assertf' mangled-name='libspl_assertf' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_assertf'>
       <parameter type-id='80f4b756' name='file'/>
       <parameter type-id='80f4b756' name='func'/>

module/icp/algs/modes/gcm.c

@@ -348,8 +348,14 @@ gcm_mode_decrypt_contiguous_blocks(gcm_ctx_t *ctx, char *data, size_t length,
 			ctx->gcm_pt_buf = NULL;
 			return (CRYPTO_HOST_MEMORY);
 		}
+
+		if (ctx->gcm_pt_buf != NULL) {
 			bcopy(ctx->gcm_pt_buf, new, ctx->gcm_pt_buf_len);
 			vmem_free(ctx->gcm_pt_buf, ctx->gcm_pt_buf_len);
+		} else {
+			ASSERT0(ctx->gcm_pt_buf_len);
+		}
+
 		ctx->gcm_pt_buf = new;
 		ctx->gcm_pt_buf_len = new_len;
 		bcopy(data, &ctx->gcm_pt_buf[ctx->gcm_processed_data_len],
@@ -554,8 +560,15 @@ gcm_init(gcm_ctx_t *ctx, unsigned char *iv, size_t iv_len,
 			 * There's not a block full of data, pad rest of
 			 * buffer with zero
 			 */
+
+			if (auth_data != NULL) {
 				bzero(authp, block_size);
-			bcopy(&(auth_data[processed]), authp, remainder);
+				bcopy(&(auth_data[processed]),
+				    authp, remainder);
+			} else {
+				ASSERT0(remainder);
+			}
+
 			datap = (uint8_t *)authp;
 			remainder = 0;
 		} else {

module/icp/io/sha2_mod.c

@@ -710,8 +710,13 @@ sha2_mac_init_ctx(sha2_hmac_ctx_t *ctx, void *keyval, uint_t length_in_bytes)
 
 	(void) bzero(ipad, block_size);
 	(void) bzero(opad, block_size);
+
+	if (keyval != NULL) {
 		(void) bcopy(keyval, ipad, length_in_bytes);
 		(void) bcopy(keyval, opad, length_in_bytes);
+	} else {
+		ASSERT0(length_in_bytes);
+	}
 
 	/* XOR key with ipad (0x36) and opad (0x5c) */
 	for (i = 0; i < blocks_per_int64; i ++) {

module/zcommon/zfs_fletcher.c

@@ -300,18 +300,21 @@ fletcher_2_byteswap(const void *buf, uint64_t size,
 	(void) fletcher_2_incremental_byteswap((void *) buf, size, zcp);
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_scalar_init(fletcher_4_ctx_t *ctx)
 {
 	ZIO_SET_CHECKSUM(&ctx->scalar, 0, 0, 0, 0);
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_scalar_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 {
 	memcpy(zcp, &ctx->scalar, sizeof (zio_cksum_t));
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_scalar_native(fletcher_4_ctx_t *ctx, const void *buf,
     uint64_t size)
@@ -335,6 +338,7 @@ fletcher_4_scalar_native(fletcher_4_ctx_t *ctx, const void *buf,
 	ZIO_SET_CHECKSUM(&ctx->scalar, a, b, c, d);
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_scalar_byteswap(fletcher_4_ctx_t *ctx, const void *buf,
     uint64_t size)

module/zcommon/zfs_fletcher_aarch64_neon.c

@@ -48,12 +48,14 @@
 #include <sys/strings.h>
 #include <zfs_fletcher.h>
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_aarch64_neon_init(fletcher_4_ctx_t *ctx)
 {
 	bzero(ctx->aarch64_neon, 4 * sizeof (zfs_fletcher_aarch64_neon_t));
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_aarch64_neon_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 {

module/zcommon/zfs_fletcher_avx512.c

@@ -35,12 +35,14 @@
 #define	__asm __asm__ __volatile__
 #endif
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_avx512f_init(fletcher_4_ctx_t *ctx)
 {
 	bzero(ctx->avx512, 4 * sizeof (zfs_fletcher_avx512_t));
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_avx512f_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 {

module/zcommon/zfs_fletcher_intel.c

@@ -47,12 +47,14 @@
 #include <sys/strings.h>
 #include <zfs_fletcher.h>
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_avx2_init(fletcher_4_ctx_t *ctx)
 {
 	bzero(ctx->avx, 4 * sizeof (zfs_fletcher_avx_t));
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_avx2_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 {

module/zcommon/zfs_fletcher_sse.c

@@ -49,12 +49,14 @@
 #include <sys/strings.h>
 #include <zfs_fletcher.h>
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_sse2_init(fletcher_4_ctx_t *ctx)
 {
 	bzero(ctx->sse, 4 * sizeof (zfs_fletcher_sse_t));
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_sse2_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 {

module/zcommon/zfs_fletcher_superscalar.c

@@ -47,12 +47,14 @@
 #include <sys/strings.h>
 #include <zfs_fletcher.h>
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar_init(fletcher_4_ctx_t *ctx)
 {
 	bzero(ctx->superscalar, 4 * sizeof (zfs_fletcher_superscalar_t));
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 {
@@ -68,6 +70,7 @@ fletcher_4_superscalar_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 	ZIO_SET_CHECKSUM(zcp, A, B, C, D);
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar_native(fletcher_4_ctx_t *ctx,
     const void *buf, uint64_t size)
@@ -107,6 +110,7 @@ fletcher_4_superscalar_native(fletcher_4_ctx_t *ctx,
 	ctx->superscalar[3].v[1] = d2;
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar_byteswap(fletcher_4_ctx_t *ctx,
     const void *buf, uint64_t size)

module/zcommon/zfs_fletcher_superscalar4.c

@@ -47,12 +47,14 @@
 #include <sys/strings.h>
 #include <zfs_fletcher.h>
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar4_init(fletcher_4_ctx_t *ctx)
 {
 	bzero(ctx->superscalar, 4 * sizeof (zfs_fletcher_superscalar_t));
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar4_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 {
@@ -82,6 +84,7 @@ fletcher_4_superscalar4_fini(fletcher_4_ctx_t *ctx, zio_cksum_t *zcp)
 	ZIO_SET_CHECKSUM(zcp, A, B, C, D);
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar4_native(fletcher_4_ctx_t *ctx,
     const void *buf, uint64_t size)
@@ -147,6 +150,7 @@ fletcher_4_superscalar4_native(fletcher_4_ctx_t *ctx,
 	ctx->superscalar[3].v[3] = d4;
 }
 
+ZFS_NO_SANITIZE_UNDEFINED
 static void
 fletcher_4_superscalar4_byteswap(fletcher_4_ctx_t *ctx,
     const void *buf, uint64_t size)

module/zfs/btree.c

@@ -536,7 +536,6 @@ zfs_btree_insert_into_parent(zfs_btree_t *tree, zfs_btree_hdr_t *old_node,
 	ASSERT3P(old_node->bth_parent, ==, new_node->bth_parent);
 	uint64_t size = tree->bt_elem_size;
 	zfs_btree_core_t *parent = old_node->bth_parent;
-	zfs_btree_hdr_t *par_hdr = &parent->btc_hdr;
 
 	/*
 	 * If this is the root node we were splitting, we create a new root
@@ -568,6 +567,7 @@ zfs_btree_insert_into_parent(zfs_btree_t *tree, zfs_btree_hdr_t *old_node,
 	 * Since we have the new separator, binary search for where to put
 	 * new_node.
 	 */
+	zfs_btree_hdr_t *par_hdr = &parent->btc_hdr;
 	zfs_btree_index_t idx;
 	ASSERT(par_hdr->bth_core);
 	VERIFY3P(zfs_btree_find_in_buf(tree, parent->btc_elems,
@@ -1898,7 +1898,8 @@ static uint64_t
 zfs_btree_verify_counts_helper(zfs_btree_t *tree, zfs_btree_hdr_t *hdr)
 {
 	if (!hdr->bth_core) {
-		if (tree->bt_root != hdr && hdr != &tree->bt_bulk->btl_hdr) {
+		if (tree->bt_root != hdr && tree->bt_bulk &&
+		    hdr != &tree->bt_bulk->btl_hdr) {
 			uint64_t capacity = P2ALIGN((BTREE_LEAF_SIZE -
 			    sizeof (zfs_btree_hdr_t)) / tree->bt_elem_size, 2);
 			VERIFY3U(hdr->bth_count, >=, (capacity / 2) - 1);

module/zfs/vdev.c

@@ -4531,8 +4531,8 @@ vdev_stat_update(zio_t *zio, uint64_t psize)
 	vdev_t *vd = zio->io_vd ? zio->io_vd : rvd;
 	vdev_t *pvd;
 	uint64_t txg = zio->io_txg;
-	vdev_stat_t *vs = &vd->vdev_stat;
+	vdev_stat_t *vs = vd ? &vd->vdev_stat : NULL;
-	vdev_stat_ex_t *vsx = &vd->vdev_stat_ex;
+	vdev_stat_ex_t *vsx = vd ? &vd->vdev_stat_ex : NULL;
 	zio_type_t type = zio->io_type;
 	int flags = zio->io_flags;
 

module/zstd/lib/zstd.c

@@ -279,12 +279,9 @@ intptr_t __msan_test_shadow(const volatile void *x, size_t size);
 #endif
 
 /* detects whether we are being compiled under asan */
-#if defined (__has_feature)
+#if defined (ZFS_ASAN_ENABLED)
-#  if __has_feature(address_sanitizer)
-#    define ADDRESS_SANITIZER 1
-#  endif
-#elif defined(__SANITIZE_ADDRESS__)
 #  define ADDRESS_SANITIZER 1
+#  define ZSTD_ASAN_DONT_POISON_WORKSPACE
 #endif
 
 #if defined (ADDRESS_SANITIZER)

module/zstd/zfs_zstd.c

@@ -207,11 +207,7 @@ static struct zstd_pool *zstd_mempool_dctx;
  * and while ASAN does this, KASAN defines that and does not. So to avoid
  * changing the external code, we do this.
  */
-#if defined(__has_feature)
+#if defined(ZFS_ASAN_ENABLED)
-#if __has_feature(address_sanitizer)
-#define	ADDRESS_SANITIZER 1
-#endif
-#elif defined(__SANITIZE_ADDRESS__)
 #define	ADDRESS_SANITIZER 1
 #endif
 #if defined(_KERNEL) && defined(ADDRESS_SANITIZER)

rpm/generic/zfs.spec.in

@@ -55,6 +55,7 @@
 %bcond_with    debug
 %bcond_with    debuginfo
 %bcond_with    asan
+%bcond_with    ubsan
 %bcond_with    systemd
 %bcond_with    pam
 %bcond_without pyzfs
@@ -344,6 +345,12 @@ image which is ZFS aware.
     %define asan --disable-asan
 %endif
 
+%if %{with ubsan}
+    %define ubsan --enable-ubsan
+%else
+    %define ubsan --disable-ubsan
+%endif
+
 %if 0%{?_systemd}
     %define systemd --enable-systemd --with-systemdunitdir=%{_unitdir} --with-systemdpresetdir=%{_presetdir} --with-systemdmodulesloaddir=%{_modulesloaddir} --with-systemdgeneratordir=%{_systemdgeneratordir} --disable-sysvinit
     %define systemd_svcs zfs-import-cache.service zfs-import-scan.service zfs-mount.service zfs-share.service zfs-zed.service zfs.target zfs-import.target zfs-volume-wait.service zfs-volumes.target
@@ -379,6 +386,7 @@ image which is ZFS aware.
     %{debug} \
     %{debuginfo} \
     %{asan} \
+    %{ubsan} \
     %{systemd} \
     %{pam} \
     %{pyzfs}

scripts/zfs-tests.sh

@@ -148,7 +148,7 @@ trap cleanup EXIT
 # be dangerous and should only be used in a dedicated test environment.
 #
 cleanup_all() {
-	TEST_POOLS=$(sudo "$ZPOOL" list -H -o name | grep testpool)
+	TEST_POOLS=$(sudo env ASAN_OPTIONS=detect_leaks=false "$ZPOOL" list -H -o name | grep testpool)
 	if [ "$UNAME" = "FreeBSD" ] ; then
 		TEST_LOOPBACKS=$(sudo "${LOSETUP}" -l)
 	else
@@ -160,7 +160,7 @@ cleanup_all() {
 	msg "--- Cleanup ---"
 	msg "Removing pool(s):     $(echo "${TEST_POOLS}" | tr '\n' ' ')"
 	for TEST_POOL in $TEST_POOLS; do
-		sudo "$ZPOOL" destroy "${TEST_POOL}"
+		sudo env ASAN_OPTIONS=detect_leaks=false "$ZPOOL" destroy "${TEST_POOL}"
 	done
 
 	if [ "$UNAME" != "FreeBSD" ] ; then
@@ -554,7 +554,7 @@ fi
 # space-delimited to newline-delimited.
 #
 if [ -z "${KEEP}" ]; then
-	KEEP="$(sudo "$ZPOOL" list -H -o name)"
+	KEEP="$(sudo env ASAN_OPTIONS=detect_leaks=false "$ZPOOL" list -H -o name)"
 	if [ -z "${KEEP}" ]; then
 		KEEP="rpool"
 	fi

scripts/zloop.sh

@@ -215,7 +215,8 @@ shift $((OPTIND - 1))
 
 # enable core dumps
 ulimit -c unlimited
-export ASAN_OPTIONS=abort_on_error=1:disable_coredump=0
+export ASAN_OPTIONS=abort_on_error=true:halt_on_error=true:allocator_may_return_null=true:disable_coredump=false:detect_stack_use_after_return=true
+export UBSAN_OPTIONS=abort_on_error=true:halt_on_error=true:print_stacktrace=true
 
 if [[ -f "$(core_file)" ]]; then
 	echo -n "There's a core dump here you might want to look at first... "

tests/zfs-tests/include/commands.cfg

@@ -51,6 +51,7 @@ export SYSTEM_FILES_COMMON='arp
     iostat
     kill
     ksh
+    ldd
     ln
     logname
     ls

tests/zfs-tests/include/default.cfg.in

@@ -155,6 +155,21 @@ done
 
 export MAX_PARTITIONS=8
 
+if [ "@ASAN_ENABLED@" = "yes" ]; then
+	export ASAN_OPTIONS=abort_on_error=true:halt_on_error=true:allocator_may_return_null=true:disable_coredump=false:detect_stack_use_after_return=true
+
+	# TODO
+	# disable memory leaks detection
+	# there are quite many of them and they are not as
+	# destructive to CLI programs as they are to daemons
+	export ASAN_OPTIONS="$ASAN_OPTIONS:detect_leaks=false"
+fi
+
+if [ "@UBSAN_ENABLED@" = "yes" ]; then
+	export UBSAN_OPTIONS=abort_on_error=true:halt_on_error=true:print_stacktrace=true
+fi
+
+
 case $(uname -o) in
 GNU/Linux)
 	unpack_opts="--sparse -xf"

tests/zfs-tests/tests/functional/alloc_class/alloc_class_013_pos.ksh

@@ -41,8 +41,8 @@ log_must display_status "$TESTPOOL"
 #
 
 log_must zfs create -o dedup=on -V 2G $TESTPOOL/$TESTVOL
-
+block_device_wait "$ZVOL_DEVDIR/$TESTPOOL/$TESTVOL"
-log_must eval "new_fs $ZVOL_DEVDIR/$TESTPOOL/$TESTVOL >/dev/null 2>&1"
+log_must eval "new_fs $ZVOL_DEVDIR/$TESTPOOL/$TESTVOL >/dev/null"
 
 sync_pool
 log_must zpool list -v $TESTPOOL

tests/zfs-tests/tests/functional/cli_root/zfs/zfs_002_pos.ksh

@@ -97,7 +97,6 @@ if is_linux; then
 	ulimit -c unlimited
 	echo "$corefile" >/proc/sys/kernel/core_pattern
 	echo 0 >/proc/sys/kernel/core_uses_pid
-	export ASAN_OPTIONS="abort_on_error=1:disable_coredump=0"
 elif is_freebsd; then
 	ulimit -c unlimited
 	savedcorefile=$(sysctl -n kern.corefile)

tests/zfs-tests/tests/functional/cli_root/zpool/zpool_002_pos.ksh

@@ -95,7 +95,6 @@ elif is_freebsd; then
 fi
 ulimit -c unlimited
 
-export ASAN_OPTIONS="abort_on_error=1:disable_coredump=0"
 export ZFS_ABORT=yes
 
 for subcmd in "${cmds[@]}" "${badparams[@]}"; do

tests/zfs-tests/tests/functional/cli_root/zpool/zpool_003_pos.ksh

@@ -89,7 +89,6 @@ elif is_freebsd; then
 fi
 ulimit -c unlimited
 
-export ASAN_OPTIONS="abort_on_error=1:disable_coredump=0"
 export ZFS_ABORT=yes
 
 zpool >/dev/null 2>&1

tests/zfs-tests/tests/functional/cli_root/zpool_trim/zpool_trim_start_and_cancel_pos.ksh

@@ -35,7 +35,7 @@
 DISK1=${DISKS%% *}
 
 log_must zpool create -f $TESTPOOL $DISK1
-log_must zpool trim $TESTPOOL
+log_must zpool trim -r 1 "$TESTPOOL"
 
 [[ -z "$(trim_progress $TESTPOOL $DISK1)" ]] && \
     log_fail "TRIM did not start"

tests/zfs-tests/tests/functional/pam/pam_basic.ksh

@@ -22,6 +22,10 @@
 
 . $STF_SUITE/tests/functional/pam/utilities.kshlib
 
+if [ -n "$ASAN_OPTIONS" ]; then
+	export LD_PRELOAD=$(ldd "$(command -v zfs)" | awk '/libasan\.so/ {print $3}')
+fi
+
 log_mustnot ismounted "$TESTPOOL/pam/${username}"
 keystatus unavailable
 

tests/zfs-tests/tests/functional/pam/pam_nounmount.ksh

@@ -22,6 +22,10 @@
 
 . $STF_SUITE/tests/functional/pam/utilities.kshlib
 
+if [ -n "$ASAN_OPTIONS" ]; then
+	export LD_PRELOAD=$(ldd "$(command -v zfs)" | awk '/libasan\.so/ {print $3}')
+fi
+
 log_mustnot ismounted "$TESTPOOL/pam/${username}"
 keystatus unavailable
 

tests/zfs-tests/tests/functional/pam/pam_short_password.ksh

@@ -27,6 +27,10 @@
 
 . $STF_SUITE/tests/functional/pam/utilities.kshlib
 
+if [ -n "$ASAN_OPTIONS" ]; then
+	export LD_PRELOAD=$(ldd "$(command -v zfs)" | awk '/libasan\.so/ {print $3}')
+fi
+
 if [[ -z pamservice ]]; then
 	pamservice=pam_zfs_key_test
 fi

tests/zfs-tests/tests/functional/pyzfs/pyzfs_unittest.ksh.in

@@ -16,6 +16,10 @@
 
 . $STF_SUITE/include/libtest.shlib
 
+if [ -n "$ASAN_OPTIONS" ]; then
+	export LD_PRELOAD=$(ldd "$(command -v zfs)" | awk '/libasan\.so/ {print $3}')
+fi
+
 #
 # DESCRIPTION:
 #	Verify the libzfs_core Python test suite can be run successfully

tests/zfs-tests/tests/functional/tmpfile/tmpfile_002_pos.c

@@ -58,7 +58,7 @@ main(void)
 		exit(3);
 	}
 
-	if ((ret = system("sudo zpool freeze $TESTPOOL"))) {
+	if ((ret = system("sudo -E zpool freeze $TESTPOOL"))) {
 		if (ret == -1)
 			perror("system \"zpool freeze\"");
 		else
@@ -69,7 +69,7 @@ main(void)
 
 	close(fd);
 
-	if ((ret = system("sudo zpool export $TESTPOOL"))) {
+	if ((ret = system("sudo -E zpool export $TESTPOOL"))) {
 		if (ret == -1)
 			perror("system \"zpool export\"");
 		else
@@ -78,7 +78,7 @@ main(void)
 		exit(4);
 	}
 
-	if ((ret = system("sudo zpool import $TESTPOOL"))) {
+	if ((ret = system("sudo -E zpool import $TESTPOOL"))) {
 		if (ret == -1)
 			perror("system \"zpool import\"");
 		else