[smartmontools-support] Assertion error when output is JSON formatted

[Johan Söllvander]

Hey,

I just got this assertion error when I was trying to print all SMART 
information about a failing disk in JSON output mode:

smartctl -a /dev/da307 --json
Smartctl: Exception: json.cpp(313): Assertion failed: p->type == nt_array


Version:

smartctl 7.3 2022-02-28 r5338 [FreeBSD 13.0-AXCIENT3-p5 amd64] (local build)
Copyright (C) 2002-22, Bruce Allen, Christian Franke, www.smartmontools.org

smartctl comes with ABSOLUTELY NO WARRANTY. This is free
software, and you are welcome to redistribute it under
the terms of the GNU General Public License; either
version 2, or (at your option) any later version.
See https://www.gnu.org for further details.

smartmontools release 7.3 dated 2022-02-28 at 16:33:40 UTC
smartmontools SVN rev 5338 dated 2022-02-28 at 16:34:26
smartmontools build host: amd64-portbld-freebsd13.0
smartmontools build with: C++11, GCC FreeBSD Clang 11.0.1 
(git at github.com:llvm/llvm-project.git llvmorg-11.0.1-0-g43ff75f2c3fe)
smartmontools configure arguments: '--disable-dependency-tracking' 
'--enable-sample' '--with-gnupg=no' 
'--with-initscriptdir=/usr/local/etc/rc.d' '--with-nvme-devicescan=yes' 
'--prefix=/usr/local' '--localstatedir=/var' '--mandir=/usr/local/man' 
'--disable-silent-rules' '--infodir=/usr/local/share/info/' 
'--build=amd64-portbld-freebsd13.0' 
'build_alias=amd64-portbld-freebsd13.0' 'CXX=c++' 'CXXFLAGS=-O2 -pipe 
-fstack-protector-strong -fno-strict-aliasing  ' 'LDFLAGS= 
-fstack-protector-strong ' 'LIBS=' 'CPPFLAGS=' 'CC=cc' 'CFLAGS=-O2 -pipe 
  -fstack-protector-strong -fno-strict-aliasing '


Attaching a .txt with normal formatted SMART info for reference if that 
helps.

Let me know if you need any more information.

-- 
Best Regards
Johan Söllvander
Cloud Engineer, Axcient
-------------- next part --------------
smartctl -a /dev/da307
smartctl 7.3 2022-02-28 r5338 [FreeBSD 13.0-AXCIENT3-p5 amd64] (local build)
Copyright (C) 2002-22, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Vendor:               SEAGATE
Product:              ST16000NM002G
Revision:             E003
Compliance:           SPC-5
User Capacity:        16,000,900,661,248 bytes [16.0 TB]
Logical block size:   512 bytes
Physical block size:  4096 bytes
LU is fully provisioned
Rotation Rate:        7200 rpm
Form Factor:          3.5 inches
Logical Unit id:      0x5000c500d6e6f627
Serial number:        <Removed>
Device type:          disk
Transport protocol:   SAS (SPL-4)
Local Time is:        Mon Feb 20 10:32:44 2023 UTC
SMART support is:     Available - device has SMART capability.
SMART support is:     Enabled
Temperature Warning:  Enabled

=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK

Grown defects during certification <not available>
Total blocks reassigned during format <not available>
Total new blocks reassigned = 7974
Power on minutes since format <not available>
Current Drive Temperature:     46 C
Drive Trip Temperature:        60 C

Accumulated power on time, hours:minutes 13065:50
Manufactured in week 15 of year 2021
Specified cycle count over device lifetime:  50000
Accumulated start-stop cycles:  13
Specified load-unload count over device lifetime:  600000
Accumulated load-unload cycles:  1202
Elements in grown defect list: 6027

Vendor (Seagate Cache) information
  Blocks sent to initiator = 2244651952
  Blocks received from initiator = 681824096
  Blocks read from cache and sent to initiator = 918213013
  Number of read and write commands whose size <= segment size = 1584567841
  Number of read and write commands whose size > segment size = 15546561

Vendor (Seagate/Hitachi) factory information
  number of hours powered up = 13065.83
  number of minutes until next internal SMART test = 53

Error counter log:
           Errors Corrected by           Total   Correction     Gigabytes    Total
               ECC          rereads/    errors   algorithm      processed    uncorrected
           fast | delayed   rewrites  corrected  invocations   [10^9 bytes]  errors
read:          0        0         0         0          0     583711.033           0
write:         0        0        11        11         81     235747.501           0
verify:        0        0         0         0          0        179.391           0

Non-medium error count:        0

  Pending defect count:16 Pending Defects: index, LBA and accumulated_power_on_hours follow
     1:  0x1bd464eb8       ,  12970
     2:  0x1bd464eb9       ,  12970
     3:  0x1bd464eba       ,  12970
     4:  0x1bd464ebb       ,  12970
     5:  0x1bd464ebc       ,  12970
     6:  0x1bd464ebd       ,  12970
     7:  0x1bd464ebe       ,  12970
     8:  0x1bd464ebf       ,  12970
     9:  0x4c628ddd8       ,  12966
    10:  0x4c628ddd9       ,  12966
    11:  0x4c628ddda       ,  12966
    12:  0x4c628dddb       ,  12966
    13:  0x4c628dddc       ,  12966
    14:  0x4c628dddd       ,  12966
    15:  0x4c628ddde       ,  12966
    16:  0x4c628dddf       ,  12966

[GLTSD (Global Logging Target Save Disable) set. Enable Save with '-S on']
SMART Self-test log
Num  Test              Status                 segment  LifeTime  LBA_first_err [SK ASC ASQ]
     Description                              number   (hours)
# 1  Background short  Aborted (by user command)   -      13                 - [-   -    -]

Long (extended) Self-test duration: 85020 seconds [23.6 hours]