libspl: lift backtrace into a separate file

If it's going to be used directly by zdb/ztest, then it sort of doesn't
make sense to carry it with the assert code.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #16181

cmd/zdb/zdb.c

@@ -85,6 +85,7 @@
 #include <sys/brt_impl.h>
 #include <zfs_comutil.h>
 #include <sys/zstd/zstd.h>
+#include <sys/backtrace.h>
 
 #include <libnvpair.h>
 #include <libzutil.h>
@@ -844,7 +845,7 @@ static void sig_handler(int signo)
 {
 	struct sigaction action;
 
-	libspl_dump_backtrace();
+	libspl_backtrace();
 	dump_debug_buffer();
 
 	/*

cmd/ztest.c

@@ -136,6 +136,7 @@
 #include <libzutil.h>
 #include <sys/crypto/icp.h>
 #include <sys/zfs_impl.h>
+#include <sys/backtrace.h>
 
 static int ztest_fd_data = -1;
 static int ztest_fd_rand = -1;
@@ -622,7 +623,7 @@ static void sig_handler(int signo)
 {
 	struct sigaction action;
 
-	libspl_dump_backtrace();
+	libspl_backtrace();
 	dump_debug_buffer();
 
 	/*

lib/libnvpair/libnvpair.abi

@@ -79,6 +79,7 @@
     <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_backtrace' 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'/>
@@ -1156,6 +1157,11 @@
       <parameter type-id='80f4b756'/>
       <return type-id='95e97e5e'/>
     </function-decl>
+    <function-decl name='strchr' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='80f4b756'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='26a90f95'/>
+    </function-decl>
     <function-decl name='strcspn' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='80f4b756'/>
       <parameter type-id='80f4b756'/>
@@ -2041,9 +2047,77 @@
     </function-type>
   </abi-instr>
   <abi-instr address-size='64' path='lib/libspl/assert.c' language='LANG_C99'>
+    <array-type-def dimensions='1' type-id='a84c031d' size-in-bits='320' id='36c46961'>
+      <subrange length='40' type-id='7359adad' id='8f80b239'/>
+    </array-type-def>
+    <union-decl name='pthread_mutex_t' size-in-bits='320' naming-typedef-id='7a6844eb' visibility='default' id='70681f9b'>
+      <data-member access='public'>
+        <var-decl name='__data' type-id='4c734837' visibility='default'/>
+      </data-member>
+      <data-member access='public'>
+        <var-decl name='__size' type-id='36c46961' visibility='default'/>
+      </data-member>
+      <data-member access='public'>
+        <var-decl name='__align' type-id='bd54fe1a' visibility='default'/>
+      </data-member>
+    </union-decl>
+    <typedef-decl name='pthread_mutex_t' type-id='70681f9b' id='7a6844eb'/>
+    <class-decl name='__pthread_mutex_s' size-in-bits='320' is-struct='yes' visibility='default' id='4c734837'>
+      <data-member access='public' layout-offset-in-bits='0'>
+        <var-decl name='__lock' type-id='95e97e5e' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='32'>
+        <var-decl name='__count' type-id='f0981eeb' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='64'>
+        <var-decl name='__owner' type-id='95e97e5e' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='96'>
+        <var-decl name='__nusers' type-id='f0981eeb' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='128'>
+        <var-decl name='__kind' type-id='95e97e5e' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='160'>
+        <var-decl name='__spins' type-id='a2185560' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='176'>
+        <var-decl name='__elision' type-id='a2185560' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='192'>
+        <var-decl name='__list' type-id='518fb49c' visibility='default'/>
+      </data-member>
+    </class-decl>
+    <class-decl name='__pthread_internal_list' size-in-bits='128' is-struct='yes' visibility='default' id='0e01899c'>
+      <data-member access='public' layout-offset-in-bits='0'>
+        <var-decl name='__prev' type-id='4d98cd5a' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='64'>
+        <var-decl name='__next' type-id='4d98cd5a' visibility='default'/>
+      </data-member>
+    </class-decl>
+    <typedef-decl name='__pthread_list_t' type-id='0e01899c' id='518fb49c'/>
+    <typedef-decl name='__pid_t' type-id='95e97e5e' id='3629bad8'/>
+    <pointer-type-def type-id='0e01899c' size-in-bits='64' id='4d98cd5a'/>
+    <pointer-type-def type-id='7a6844eb' size-in-bits='64' id='18c91f9e'/>
+    <function-decl name='libspl_backtrace' mangled-name='libspl_backtrace' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_backtrace'>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='pthread_mutex_lock' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='18c91f9e'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
+    <function-decl name='pthread_mutex_unlock' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='18c91f9e'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
     <function-decl name='abort' visibility='default' binding='global' size-in-bits='64'>
       <return type-id='48b5725f'/>
     </function-decl>
+    <function-decl name='getpid' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='3629bad8'/>
+    </function-decl>
     <function-decl name='__vfprintf_chk' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='e75a27e9'/>
       <parameter type-id='95e97e5e'/>
@@ -2051,11 +2125,43 @@
       <parameter type-id='b7f2d5e6'/>
       <return type-id='95e97e5e'/>
     </function-decl>
+    <function-decl name='gettid' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='3629bad8'/>
+    </function-decl>
+    <function-decl name='prctl' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='95e97e5e'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
     <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='c19b74c3' name='val'/>
       <return type-id='48b5725f'/>
     </function-decl>
   </abi-instr>
+  <abi-instr address-size='64' path='lib/libspl/backtrace.c' language='LANG_C99'>
+    <typedef-decl name='__ssize_t' type-id='bd54fe1a' id='41060289'/>
+    <typedef-decl name='ssize_t' type-id='41060289' id='79a0948f'/>
+    <qualified-type-def type-id='eaa32e2f' const='yes' id='83be723c'/>
+    <pointer-type-def type-id='83be723c' size-in-bits='64' id='7acd98a2'/>
+    <pointer-type-def type-id='eaa32e2f' size-in-bits='64' id='63e171df'/>
+    <function-decl name='backtrace' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='63e171df'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
+    <function-decl name='backtrace_symbols_fd' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='7acd98a2'/>
+      <parameter type-id='95e97e5e'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='write' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='95e97e5e'/>
+      <parameter type-id='eaa32e2f'/>
+      <parameter type-id='b59d7dce'/>
+      <return type-id='79a0948f'/>
+    </function-decl>
+  </abi-instr>
   <abi-instr address-size='64' path='module/nvpair/fnvpair.c' language='LANG_C99'>
     <function-decl name='fnvlist_alloc' mangled-name='fnvlist_alloc' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='fnvlist_alloc'>
       <return type-id='5ce45b60'/>
@@ -2536,11 +2642,6 @@
       <parameter type-id='b59d7dce'/>
       <return type-id='95e97e5e'/>
     </function-decl>
-    <function-decl name='strchr' visibility='default' binding='global' size-in-bits='64'>
-      <parameter type-id='80f4b756'/>
-      <parameter type-id='95e97e5e'/>
-      <return type-id='26a90f95'/>
-    </function-decl>
     <function-decl name='strlen' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='80f4b756'/>
       <return type-id='b59d7dce'/>

lib/libspl/Makefile.am

@@ -7,7 +7,8 @@ noinst_LTLIBRARIES += libspl_assert.la libspl.la
 CPPCHECKTARGETS    += libspl_assert.la libspl.la
 
 libspl_assert_la_SOURCES = \
-	%D%/assert.c
+	%D%/assert.c \
+	%D%/backtrace.c
 
 libspl_la_SOURCES = \
 	%D%/libspl_impl.h \

lib/libspl/assert.c

@@ -28,6 +28,7 @@
 
 #include <assert.h>
 #include <pthread.h>
+#include <sys/backtrace.h>
 
 #if defined(__linux__)
 #include <errno.h>
@@ -51,58 +52,6 @@
 	pthread_getname_np(pthread_self(), buf, len);
 #endif
 
-#if defined(HAVE_LIBUNWIND)
-#define	UNW_LOCAL_ONLY
-#include <libunwind.h>
-
-void
-libspl_dump_backtrace(void)
-{
-	unw_context_t uc;
-	unw_cursor_t cp;
-	unw_word_t ip, off;
-	char funcname[128];
-#ifdef HAVE_LIBUNWIND_ELF
-	char objname[128];
-	unw_word_t objoff;
-#endif
-
-	fprintf(stderr, "Call trace:\n");
-	unw_getcontext(&uc);
-	unw_init_local(&cp, &uc);
-	while (unw_step(&cp) > 0) {
-		unw_get_reg(&cp, UNW_REG_IP, &ip);
-		unw_get_proc_name(&cp, funcname, sizeof (funcname), &off);
-#ifdef HAVE_LIBUNWIND_ELF
-		unw_get_elf_filename(&cp, objname, sizeof (objname), &objoff);
-		fprintf(stderr, "  [0x%08lx] %s+0x%2lx (in %s +0x%2lx)\n",
-		    ip, funcname, off, objname, objoff);
-#else
-		fprintf(stderr, "  [0x%08lx] %s+0x%2lx\n", ip, funcname, off);
-#endif
-	}
-}
-#elif defined(HAVE_BACKTRACE)
-#include <execinfo.h>
-
-void
-libspl_dump_backtrace(void)
-{
-	void *btptrs[100];
-	size_t nptrs = backtrace(btptrs, 100);
-	char **bt = backtrace_symbols(btptrs, nptrs);
-	fprintf(stderr, "Call trace:\n");
-	for (size_t i = 0; i < nptrs; i++)
-		fprintf(stderr, "  %s\n", bt[i]);
-	free(bt);
-}
-#else
-void
-libspl_dump_backtrace(void)
-{
-}
-#endif
-
 #if defined(__APPLE__)
 static inline uint64_t
 libspl_gettid(void)
@@ -154,7 +103,7 @@ libspl_assertf(const char *file, const char *func, int line,
 	    getpid(), libspl_getprogname(),
 	    libspl_gettid(), tname);
 
-	libspl_dump_backtrace();
+	libspl_backtrace();
 
 #if !__has_feature(attribute_analyzer_noreturn) && !defined(__COVERITY__)
 	if (libspl_assert_ok) {

lib/libspl/backtrace.c

@@ -0,0 +1,80 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or https://opensource.org/licenses/CDDL-1.0.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2024, Rob Norris <robn@despairlabs.com>
+ * Copyright (c) 2024, Klara Inc.
+ */
+
+#include <sys/backtrace.h>
+#include <stdio.h>
+
+#if defined(HAVE_LIBUNWIND)
+#define	UNW_LOCAL_ONLY
+#include <libunwind.h>
+
+void
+libspl_backtrace(void)
+{
+	unw_context_t uc;
+	unw_cursor_t cp;
+	unw_word_t ip, off;
+	char funcname[128];
+#ifdef HAVE_LIBUNWIND_ELF
+	char objname[128];
+	unw_word_t objoff;
+#endif
+
+	fprintf(stderr, "Call trace:\n");
+	unw_getcontext(&uc);
+	unw_init_local(&cp, &uc);
+	while (unw_step(&cp) > 0) {
+		unw_get_reg(&cp, UNW_REG_IP, &ip);
+		unw_get_proc_name(&cp, funcname, sizeof (funcname), &off);
+#ifdef HAVE_LIBUNWIND_ELF
+		unw_get_elf_filename(&cp, objname, sizeof (objname), &objoff);
+		fprintf(stderr, "  [0x%08lx] %s+0x%2lx (in %s +0x%2lx)\n",
+		    ip, funcname, off, objname, objoff);
+#else
+		fprintf(stderr, "  [0x%08lx] %s+0x%2lx\n", ip, funcname, off);
+#endif
+	}
+}
+#elif defined(HAVE_BACKTRACE)
+#include <execinfo.h>
+
+void
+libspl_backtrace(void)
+{
+	void *btptrs[100];
+	size_t nptrs = backtrace(btptrs, 100);
+	char **bt = backtrace_symbols(btptrs, nptrs);
+	fprintf(stderr, "Call trace:\n");
+	for (size_t i = 0; i < nptrs; i++)
+		fprintf(stderr, "  %s\n", bt[i]);
+	free(bt);
+}
+#else
+void
+libspl_backtrace(void)
+{
+}
+#endif
+

lib/libspl/include/Makefile.am

@@ -27,6 +27,7 @@ libspl_sys_HEADERS = \
 	%D%/sys/acl.h \
 	%D%/sys/acl_impl.h \
 	%D%/sys/asm_linkage.h \
+	%D%/sys/backtrace.h \
 	%D%/sys/callb.h \
 	%D%/sys/cmn_err.h \
 	%D%/sys/cred.h \

lib/libspl/include/assert.h

@@ -60,8 +60,6 @@ libspl_assert(const char *buf, const char *file, const char *func, int line)
 	return (0);
 }
 
-extern void libspl_dump_backtrace(void);
-
 #ifdef verify
 #undef verify
 #endif

lib/libspl/include/sys/backtrace.h

@@ -0,0 +1,32 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or https://opensource.org/licenses/CDDL-1.0.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright (c) 2024, Rob Norris <robn@despairlabs.com>
+ * Copyright (c) 2024, Klara Inc.
+ */
+
+#ifndef _LIBSPL_SYS_BACKTRACE_H
+#define	_LIBSPL_SYS_BACKTRACE_H
+
+void libspl_backtrace(void);
+
+#endif

lib/libuutil/libuutil.abi

@@ -149,6 +149,7 @@
     <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_backtrace' 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'/>
@@ -242,6 +243,22 @@
     <elf-symbol name='uu_zalloc' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
   </elf-function-symbols>
   <abi-instr address-size='64' path='lib/libspl/assert.c' language='LANG_C99'>
+    <typedef-decl name='__pid_t' type-id='95e97e5e' id='3629bad8'/>
+    <function-decl name='libspl_backtrace' mangled-name='libspl_backtrace' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_backtrace'>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='getpid' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='3629bad8'/>
+    </function-decl>
+    <function-decl name='gettid' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='3629bad8'/>
+    </function-decl>
+    <function-decl name='prctl' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='95e97e5e'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
     <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='c19b74c3' name='val'/>
       <return type-id='48b5725f'/>
@@ -576,6 +593,27 @@
     </function-decl>
     <type-decl name='unsigned short int' size-in-bits='16' id='8efea9e5'/>
   </abi-instr>
+  <abi-instr address-size='64' path='lib/libspl/backtrace.c' language='LANG_C99'>
+    <qualified-type-def type-id='eaa32e2f' const='yes' id='83be723c'/>
+    <pointer-type-def type-id='83be723c' size-in-bits='64' id='7acd98a2'/>
+    <function-decl name='backtrace' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='63e171df'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
+    <function-decl name='backtrace_symbols_fd' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='7acd98a2'/>
+      <parameter type-id='95e97e5e'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='write' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='95e97e5e'/>
+      <parameter type-id='eaa32e2f'/>
+      <parameter type-id='b59d7dce'/>
+      <return type-id='79a0948f'/>
+    </function-decl>
+  </abi-instr>
   <abi-instr address-size='64' path='lib/libspl/getexecname.c' language='LANG_C99'>
     <function-decl name='getexecname' mangled-name='getexecname' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='getexecname'>
       <return type-id='80f4b756'/>
@@ -596,14 +634,11 @@
         <var-decl name='prev' type-id='b03eadb4' visibility='default'/>
       </data-member>
     </class-decl>
-    <class-decl name='list' size-in-bits='256' is-struct='yes' visibility='default' id='e824dae9'>
+    <class-decl name='list' size-in-bits='192' is-struct='yes' visibility='default' id='e824dae9'>
       <data-member access='public' layout-offset-in-bits='0'>
-        <var-decl name='list_size' type-id='b59d7dce' visibility='default'/>
-      </data-member>
-      <data-member access='public' layout-offset-in-bits='64'>
         <var-decl name='list_offset' type-id='b59d7dce' visibility='default'/>
       </data-member>
-      <data-member access='public' layout-offset-in-bits='128'>
+      <data-member access='public' layout-offset-in-bits='64'>
         <var-decl name='list_head' type-id='b0b5e45e' visibility='default'/>
       </data-member>
     </class-decl>
@@ -800,9 +835,16 @@
     <type-decl name='unsigned long int' size-in-bits='64' id='7359adad'/>
   </abi-instr>
   <abi-instr address-size='64' path='lib/libspl/os/linux/getmntany.c' language='LANG_C99'>
+    <array-type-def dimensions='1' type-id='38b51b3c' size-in-bits='832' id='02b72c00'>
+      <subrange length='13' type-id='7359adad' id='487fded1'/>
+    </array-type-def>
     <array-type-def dimensions='1' type-id='03085adc' size-in-bits='192' id='083f8d58'>
       <subrange length='3' type-id='7359adad' id='56f209d2'/>
     </array-type-def>
+    <class-decl name='__locale_data' is-struct='yes' visibility='default' is-declaration-only='yes' id='23de8b96'/>
+    <array-type-def dimensions='1' type-id='80f4b756' size-in-bits='832' id='39e6f84a'>
+      <subrange length='13' type-id='7359adad' id='487fded1'/>
+    </array-type-def>
     <class-decl name='mnttab' size-in-bits='256' is-struct='yes' visibility='default' id='1b055409'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='mnt_special' type-id='26a90f95' visibility='default'/>
@@ -912,6 +954,25 @@
     <typedef-decl name='__blksize_t' type-id='bd54fe1a' id='d3f10a7f'/>
     <typedef-decl name='__blkcnt64_t' type-id='bd54fe1a' id='4e711bf1'/>
     <typedef-decl name='__syscall_slong_t' type-id='bd54fe1a' id='03085adc'/>
+    <class-decl name='__locale_struct' size-in-bits='1856' is-struct='yes' visibility='default' id='90cc1ce3'>
+      <data-member access='public' layout-offset-in-bits='0'>
+        <var-decl name='__locales' type-id='02b72c00' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='832'>
+        <var-decl name='__ctype_b' type-id='31347b7a' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='896'>
+        <var-decl name='__ctype_tolower' type-id='6d60f45d' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='960'>
+        <var-decl name='__ctype_toupper' type-id='6d60f45d' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='1024'>
+        <var-decl name='__names' type-id='39e6f84a' visibility='default'/>
+      </data-member>
+    </class-decl>
+    <typedef-decl name='__locale_t' type-id='f01e1813' id='b7ac9b5f'/>
+    <typedef-decl name='locale_t' type-id='b7ac9b5f' id='973a4f8d'/>
     <class-decl name='timespec' size-in-bits='128' is-struct='yes' visibility='default' id='a9c79a1f'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='tv_sec' type-id='65eda9c0' visibility='default'/>
@@ -920,12 +981,23 @@
         <var-decl name='tv_nsec' type-id='03085adc' visibility='default'/>
       </data-member>
     </class-decl>
+    <pointer-type-def type-id='23de8b96' size-in-bits='64' id='38b51b3c'/>
+    <pointer-type-def type-id='90cc1ce3' size-in-bits='64' id='f01e1813'/>
+    <qualified-type-def type-id='95e97e5e' const='yes' id='2448a865'/>
+    <pointer-type-def type-id='2448a865' size-in-bits='64' id='6d60f45d'/>
+    <qualified-type-def type-id='8efea9e5' const='yes' id='3beb2af4'/>
+    <pointer-type-def type-id='3beb2af4' size-in-bits='64' id='31347b7a'/>
     <pointer-type-def type-id='0c544dc0' size-in-bits='64' id='394fc496'/>
     <pointer-type-def type-id='56fe4a37' size-in-bits='64' id='b6b61d2f'/>
     <qualified-type-def type-id='b6b61d2f' restrict='yes' id='3cad23cd'/>
     <pointer-type-def type-id='1b055409' size-in-bits='64' id='9d424d31'/>
     <pointer-type-def type-id='0bbec9cd' size-in-bits='64' id='62f7a03d'/>
     <qualified-type-def type-id='62f7a03d' restrict='yes' id='f1cadedf'/>
+    <class-decl name='__locale_data' is-struct='yes' visibility='default' is-declaration-only='yes' id='23de8b96'/>
+    <function-decl name='uselocale' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='973a4f8d'/>
+      <return type-id='973a4f8d'/>
+    </function-decl>
     <function-decl name='getmntent_r' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='e75a27e9'/>
       <parameter type-id='3cad23cd'/>
@@ -937,8 +1009,9 @@
       <parameter type-id='822cd80b'/>
       <return type-id='95e97e5e'/>
     </function-decl>
-    <function-decl name='strerror' visibility='default' binding='global' size-in-bits='64'>
+    <function-decl name='strerror_l' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='95e97e5e'/>
+      <parameter type-id='973a4f8d'/>
       <return type-id='26a90f95'/>
     </function-decl>
     <function-decl name='__fprintf_chk' visibility='default' binding='global' size-in-bits='64'>

lib/libzfs/libzfs.abi

@@ -191,6 +191,7 @@
     <elf-symbol name='is_mpath_whole_disk' type='func-type' binding='global-binding' visibility='default-visibility' is-defined='yes'/>
     <elf-symbol name='libpc_error_description' 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_backtrace' 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'/>
@@ -777,6 +778,18 @@
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='lib/libspl/assert.c' language='LANG_C99'>
+    <function-decl name='libspl_backtrace' mangled-name='libspl_backtrace' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_backtrace'>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='gettid' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='3629bad8'/>
+    </function-decl>
+    <function-decl name='prctl' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='95e97e5e'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
     <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='c19b74c3' name='val'/>
       <return type-id='48b5725f'/>
@@ -1092,6 +1105,19 @@
       <return type-id='48b5725f'/>
     </function-decl>
   </abi-instr>
+  <abi-instr address-size='64' path='lib/libspl/backtrace.c' language='LANG_C99'>
+    <function-decl name='backtrace' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='63e171df'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
+    <function-decl name='backtrace_symbols_fd' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='7acd98a2'/>
+      <parameter type-id='95e97e5e'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+  </abi-instr>
   <abi-instr address-size='64' path='lib/libspl/getexecname.c' language='LANG_C99'>
     <function-decl name='getexecname' mangled-name='getexecname' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='getexecname'>
       <return type-id='80f4b756'/>
@@ -6252,6 +6278,11 @@
       <parameter type-id='8c85230f'/>
       <return type-id='26a90f95'/>
     </function-decl>
+    <function-decl name='ctime_r' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='d6e2847c'/>
+      <parameter type-id='266fe297'/>
+      <return type-id='26a90f95'/>
+    </function-decl>
     <function-decl name='__realpath_chk' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='9d26089a'/>
       <parameter type-id='266fe297'/>
@@ -6363,7 +6394,7 @@
     <function-decl name='zpool_add' mangled-name='zpool_add' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_add'>
       <parameter type-id='4c81de99' name='zhp'/>
       <parameter type-id='5ce45b60' name='nvroot'/>
-      <parameter type-id='c19b74c3' name='ashift_check'/>
+      <parameter type-id='c19b74c3' name='check_ashift'/>
       <return type-id='95e97e5e'/>
     </function-decl>
     <function-decl name='zpool_export' mangled-name='zpool_export' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='zpool_export'>
@@ -8672,7 +8703,7 @@
     <array-type-def dimensions='1' type-id='a84c031d' size-in-bits='256' id='16dc656a'>
       <subrange length='32' type-id='7359adad' id='ae5bde82'/>
     </array-type-def>
-    <class-decl name='importargs' size-in-bits='448' is-struct='yes' visibility='default' id='7ac83801'>
+    <class-decl name='importargs' size-in-bits='512' is-struct='yes' visibility='default' id='7ac83801'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='path' type-id='9b23c9ad' visibility='default'/>
       </data-member>
@@ -8697,6 +8728,12 @@
       <data-member access='public' layout-offset-in-bits='384'>
         <var-decl name='policy' type-id='5ce45b60' visibility='default'/>
       </data-member>
+      <data-member access='public' layout-offset-in-bits='448'>
+        <var-decl name='do_destroyed' type-id='c19b74c3' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='480'>
+        <var-decl name='do_all' type-id='c19b74c3' visibility='default'/>
+      </data-member>
     </class-decl>
     <typedef-decl name='importargs_t' type-id='7ac83801' id='7a842a6b'/>
     <class-decl name='libpc_handle' size-in-bits='8448' is-struct='yes' visibility='default' id='7c8737f0'>

lib/libzfs_core/libzfs_core.abi

@@ -132,6 +132,7 @@
     <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_backtrace' 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'/>
@@ -231,10 +232,18 @@
         <var-decl name='reg_save_area' type-id='eaa32e2f' visibility='default'/>
       </data-member>
     </class-decl>
+    <typedef-decl name='__pid_t' type-id='95e97e5e' id='3629bad8'/>
     <pointer-type-def type-id='d5027220' size-in-bits='64' id='b7f2d5e6'/>
+    <function-decl name='libspl_backtrace' mangled-name='libspl_backtrace' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='libspl_backtrace'>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
     <function-decl name='abort' visibility='default' binding='global' size-in-bits='64'>
       <return type-id='48b5725f'/>
     </function-decl>
+    <function-decl name='getpid' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='3629bad8'/>
+    </function-decl>
     <function-decl name='__vfprintf_chk' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='e75a27e9'/>
       <parameter type-id='95e97e5e'/>
@@ -242,6 +251,14 @@
       <parameter type-id='b7f2d5e6'/>
       <return type-id='95e97e5e'/>
     </function-decl>
+    <function-decl name='gettid' visibility='default' binding='global' size-in-bits='64'>
+      <return type-id='3629bad8'/>
+    </function-decl>
+    <function-decl name='prctl' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='95e97e5e'/>
+      <parameter is-variadic='yes'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
     <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='c19b74c3' name='val'/>
       <return type-id='48b5725f'/>
@@ -574,6 +591,27 @@
     <type-decl name='unsigned long int' size-in-bits='64' id='7359adad'/>
     <type-decl name='unsigned short int' size-in-bits='16' id='8efea9e5'/>
   </abi-instr>
+  <abi-instr address-size='64' path='lib/libspl/backtrace.c' language='LANG_C99'>
+    <qualified-type-def type-id='eaa32e2f' const='yes' id='83be723c'/>
+    <pointer-type-def type-id='83be723c' size-in-bits='64' id='7acd98a2'/>
+    <function-decl name='backtrace' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='63e171df'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='95e97e5e'/>
+    </function-decl>
+    <function-decl name='backtrace_symbols_fd' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='7acd98a2'/>
+      <parameter type-id='95e97e5e'/>
+      <parameter type-id='95e97e5e'/>
+      <return type-id='48b5725f'/>
+    </function-decl>
+    <function-decl name='write' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='95e97e5e'/>
+      <parameter type-id='eaa32e2f'/>
+      <parameter type-id='b59d7dce'/>
+      <return type-id='79a0948f'/>
+    </function-decl>
+  </abi-instr>
   <abi-instr address-size='64' path='lib/libspl/getexecname.c' language='LANG_C99'>
     <function-decl name='getexecname' mangled-name='getexecname' visibility='default' binding='global' size-in-bits='64' elf-symbol-id='getexecname'>
       <return type-id='80f4b756'/>
@@ -594,14 +632,11 @@
         <var-decl name='prev' type-id='b03eadb4' visibility='default'/>
       </data-member>
     </class-decl>
-    <class-decl name='list' size-in-bits='256' is-struct='yes' visibility='default' id='e824dae9'>
+    <class-decl name='list' size-in-bits='192' is-struct='yes' visibility='default' id='e824dae9'>
       <data-member access='public' layout-offset-in-bits='0'>
-        <var-decl name='list_size' type-id='b59d7dce' visibility='default'/>
-      </data-member>
-      <data-member access='public' layout-offset-in-bits='64'>
         <var-decl name='list_offset' type-id='b59d7dce' visibility='default'/>
       </data-member>
-      <data-member access='public' layout-offset-in-bits='128'>
+      <data-member access='public' layout-offset-in-bits='64'>
         <var-decl name='list_head' type-id='b0b5e45e' visibility='default'/>
       </data-member>
     </class-decl>
@@ -770,6 +805,13 @@
     </function-decl>
   </abi-instr>
   <abi-instr address-size='64' path='lib/libspl/os/linux/getmntany.c' language='LANG_C99'>
+    <array-type-def dimensions='1' type-id='38b51b3c' size-in-bits='832' id='02b72c00'>
+      <subrange length='13' type-id='7359adad' id='487fded1'/>
+    </array-type-def>
+    <class-decl name='__locale_data' is-struct='yes' visibility='default' is-declaration-only='yes' id='23de8b96'/>
+    <array-type-def dimensions='1' type-id='80f4b756' size-in-bits='832' id='39e6f84a'>
+      <subrange length='13' type-id='7359adad' id='487fded1'/>
+    </array-type-def>
     <class-decl name='mnttab' size-in-bits='256' is-struct='yes' visibility='default' id='1b055409'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='mnt_special' type-id='26a90f95' visibility='default'/>
@@ -873,12 +915,42 @@
     </class-decl>
     <typedef-decl name='__ino64_t' type-id='7359adad' id='71288a47'/>
     <typedef-decl name='__blkcnt64_t' type-id='bd54fe1a' id='4e711bf1'/>
+    <class-decl name='__locale_struct' size-in-bits='1856' is-struct='yes' visibility='default' id='90cc1ce3'>
+      <data-member access='public' layout-offset-in-bits='0'>
+        <var-decl name='__locales' type-id='02b72c00' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='832'>
+        <var-decl name='__ctype_b' type-id='31347b7a' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='896'>
+        <var-decl name='__ctype_tolower' type-id='6d60f45d' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='960'>
+        <var-decl name='__ctype_toupper' type-id='6d60f45d' visibility='default'/>
+      </data-member>
+      <data-member access='public' layout-offset-in-bits='1024'>
+        <var-decl name='__names' type-id='39e6f84a' visibility='default'/>
+      </data-member>
+    </class-decl>
+    <typedef-decl name='__locale_t' type-id='f01e1813' id='b7ac9b5f'/>
+    <typedef-decl name='locale_t' type-id='b7ac9b5f' id='973a4f8d'/>
+    <pointer-type-def type-id='23de8b96' size-in-bits='64' id='38b51b3c'/>
+    <pointer-type-def type-id='90cc1ce3' size-in-bits='64' id='f01e1813'/>
+    <qualified-type-def type-id='95e97e5e' const='yes' id='2448a865'/>
+    <pointer-type-def type-id='2448a865' size-in-bits='64' id='6d60f45d'/>
+    <qualified-type-def type-id='8efea9e5' const='yes' id='3beb2af4'/>
+    <pointer-type-def type-id='3beb2af4' size-in-bits='64' id='31347b7a'/>
     <pointer-type-def type-id='0c544dc0' size-in-bits='64' id='394fc496'/>
     <pointer-type-def type-id='56fe4a37' size-in-bits='64' id='b6b61d2f'/>
     <qualified-type-def type-id='b6b61d2f' restrict='yes' id='3cad23cd'/>
     <pointer-type-def type-id='1b055409' size-in-bits='64' id='9d424d31'/>
     <pointer-type-def type-id='0bbec9cd' size-in-bits='64' id='62f7a03d'/>
     <qualified-type-def type-id='62f7a03d' restrict='yes' id='f1cadedf'/>
+    <class-decl name='__locale_data' is-struct='yes' visibility='default' is-declaration-only='yes' id='23de8b96'/>
+    <function-decl name='uselocale' visibility='default' binding='global' size-in-bits='64'>
+      <parameter type-id='973a4f8d'/>
+      <return type-id='973a4f8d'/>
+    </function-decl>
     <function-decl name='getmntent_r' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='e75a27e9'/>
       <parameter type-id='3cad23cd'/>
@@ -895,8 +967,9 @@
       <parameter type-id='80f4b756'/>
       <return type-id='95e97e5e'/>
     </function-decl>
-    <function-decl name='strerror' visibility='default' binding='global' size-in-bits='64'>
+    <function-decl name='strerror_l' visibility='default' binding='global' size-in-bits='64'>
       <parameter type-id='95e97e5e'/>
+      <parameter type-id='973a4f8d'/>
       <return type-id='26a90f95'/>
     </function-decl>
     <function-decl name='__fprintf_chk' visibility='default' binding='global' size-in-bits='64'>
@@ -1119,7 +1192,7 @@
       <enumerator name='LZC_SEND_FLAG_RAW' value='8'/>
       <enumerator name='LZC_SEND_FLAG_SAVED' value='16'/>
     </enum-decl>
-    <class-decl name='ddt_key' size-in-bits='320' is-struct='yes' visibility='default' id='e0a4a1cb'>
+    <class-decl name='ddt_key_t' size-in-bits='320' is-struct='yes' naming-typedef-id='67f6d2cf' visibility='default' id='5fae1718'>
       <data-member access='public' layout-offset-in-bits='0'>
         <var-decl name='ddk_cksum' type-id='39730d0b' visibility='default'/>
       </data-member>
@@ -1127,7 +1200,7 @@
         <var-decl name='ddk_prop' type-id='9c313c2d' visibility='default'/>
       </data-member>
     </class-decl>
-    <typedef-decl name='ddt_key_t' type-id='e0a4a1cb' id='67f6d2cf'/>
+    <typedef-decl name='ddt_key_t' type-id='5fae1718' id='67f6d2cf'/>
     <enum-decl name='dmu_object_type' id='04b3b0b9'>
       <underlying-type type-id='9cac1fee'/>
       <enumerator name='DMU_OT_NONE' value='0'/>