NEX-3288 fmd segfaults in zfs-diagnosis.so`zfs_fm_close
Reviewed by: Alek Pinchuk <alek.pinchuk@nexenta.com>
Reviewed by: Marcel Telka <marcel.telka@nexenta.com>
NEX-3011 zfs-diagnosis: Memory leak in zpool_find_load_time()
Reviewed by: Dan Fields <dan.fields@nexenta.com>
OS-70 remove zio timer code
re #12393 rb3935 Kerberos and smbd disagree about who is our AD server (fix elf runtime attributes check)
re #11612 rb3907 Failing vdev of a mirrored pool should not take zfs operations out of action for extended periods of time.

*** 18,30 ****
   *
   * CDDL HEADER END
   */
  
  /*
-  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
   * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
   */
  
  #include <assert.h>
  #include <stddef.h>
  #include <strings.h>
  #include <libuutil.h>
--- 18,32 ----
   *
   * CDDL HEADER END
   */
  
  /*
   * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
   */
+ /*
+  * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
+  */
  
  #include <assert.h>
  #include <stddef.h>
  #include <strings.h>
  #include <libuutil.h>
*** 930,941 ****
  }
  
  static void
  zfs_fm_close(fmd_hdl_t *hdl, fmd_case_t *cs)
  {
!         zfs_case_t *zcp = fmd_case_getspecific(hdl, cs);
  
          if (zcp->zc_data.zc_serd_checksum[0] != '\0')
                  fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_checksum);
          if (zcp->zc_data.zc_serd_io[0] != '\0')
                  fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_io);
          if (zcp->zc_data.zc_has_remove_timer)
--- 932,946 ----
  }
  
  static void
  zfs_fm_close(fmd_hdl_t *hdl, fmd_case_t *cs)
  {
!         zfs_case_t *zcp;
  
+         if ((zcp = fmd_case_getspecific(hdl, cs)) == NULL)
+                 return;
+ 
          if (zcp->zc_data.zc_serd_checksum[0] != '\0')
                  fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_checksum);
          if (zcp->zc_data.zc_serd_io[0] != '\0')
                  fmd_serd_destroy(hdl, zcp->zc_data.zc_serd_io);
          if (zcp->zc_data.zc_has_remove_timer)
*** 970,980 ****
          { "remove_timeout", FMD_TYPE_TIME, "15sec" },
          { NULL, 0, NULL }
  };
  
  static const fmd_hdl_info_t fmd_info = {
!         "ZFS Diagnosis Engine", "1.0", &fmd_ops, fmd_props
  };
  
  void
  _fmd_init(fmd_hdl_t *hdl)
  {
--- 975,985 ----
          { "remove_timeout", FMD_TYPE_TIME, "15sec" },
          { NULL, 0, NULL }
  };
  
  static const fmd_hdl_info_t fmd_info = {
!         "ZFS Diagnosis Engine", "1.1", &fmd_ops, fmd_props
  };
  
  void
  _fmd_init(fmd_hdl_t *hdl)
  {