NimBLE-Arduino: Crashes in v1.3.5 when connecting/disconnecting/writing to/reading from BLE device

After upgrading from v1.3.4 to v1.3.5 in one of my projects, I’m periodically getting crashes that look like the following:

      3318 V: Connecting to device at 60:a4:23:f1:ed:72
lld_pdu_get_tx_flush_nb HCI packet count mismatch (1, 2)
Guru Meditation Error: Core  0 panic'ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC      : 0x400932bc  PS      : 0x00060130  A0      : 0x80093396  A1      : 0x3ffcc4f0  
A2      : 0x01000000  A3      : 0x00000001  A4      : 0x00000d3f  A5      : 0x80000020  
A6      : 0x00000003  A7      : 0x00060023  A8      : 0x00000003  A9      : 0x3ffcc4b0  
A10     : 0x00000001  A11     : 0x00000000  A12     : 0x3ffbd394  A13     : 0x00000000  
A14     : 0x3ffbd42c  A15     : 0x3ffbb170  SAR     : 0x00000000  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x01000014  LBEG    : 0x4000c2e0  LEND    : 0x4000c2f6  LCOUNT  : 0x00000000  

ELF file SHA256: 0000000000000000

Backtrace: 0x400932bc:0x3ffcc4f0 0x40093393:0x3ffcc530 0x40090b2a:0x3ffcc560
  #0  0x400932bc:0x3ffcc4f0 in prvProcessReceivedCommands at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/timers.c:485
  #1  0x40093393:0x3ffcc530 in prvTimerTask at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/timers.c:485
  #2  0x40090b2a:0x3ffcc560 in vPortTaskWrapper at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)

Interestingly, the crashes always invoke something timer-related and only happen when connecting to/reading/writing to/disconnecting from a BLE device. Here’s another crash when trying to send data to a device:

    615991 V: Connecting to device at 60:a4:23:f1:ed:72
    616315 V: Connected to: 60:a4:23:f1:ed:72, RSSI: -66
    616316 V: Sending command to unlock device (write_gatt_attr)
    617676 Guru Meditation Error: Core  0 panic'ed (StoreProhibited). Exception was unhandled.
Core 0 register dump:
PC      : 0x4009377d  PS      : 0x00060f30  A0      : 0x800932c6  A1      : 0x3ffcc4d0  
A2      : 0x3ffdbc05  A3      : 0x00000000  A4      : 0x3ffbd394  A5      : 0x00000000  
A6      : 0x3ffbd3cc  A7      : 0x3ffbb170  A8      : 0x343ffdbc  A9      : 0x00003300  
A10     : 0x78000000  A11     : 0x00000000  A12     : 0x3ffcb64c  A13     : 0x00000001  
A14     : 0x00060f20  A15     : 0x00000000  SAR     : 0x00000000  EXCCAUSE: 0x0000001d  
EXCVADDR: 0x00003308  LBEG    : 0x4000c2e0  LEND    : 0x4000c2f6  LCOUNT  : 0x00000000  

ELF file SHA256: 0000000000000000

Backtrace: 0x4009377d:0x3ffcc4d0 0x400932c3:0x3ffcc4f0 0x40093393:0x3ffcc530 0x40090b2a:0x3ffcc560
  #0  0x4009377d:0x3ffcc4d0 in uxListRemove at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/list.c:214
  #1  0x400932c3:0x3ffcc4f0 in prvProcessReceivedCommands at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/timers.c:485
  #2  0x40093393:0x3ffcc530 in prvTimerTask at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/timers.c:485
  #3  0x40090b2a:0x3ffcc560 in vPortTaskWrapper at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/port.c:355 (discriminator 1)

And another:

      6104 V: Connected to: 60:a4:23:f1:ed:72, RSSI: -72
      7469 V: Read port 0, characteristic f1849d4b-a033-4d97-a988-3259a3498b95 as value: 18925
Preapring to disconnectGuru Meditation Error: Core  1 panic'ed (LoadProhibited). Exception was unhandled.
Core 1 register dump:
PC      : 0x400933cc  PS      : 0x00060933  A0      : 0x800ed6a1  A1      : 0x3ffce6e0  
A2      : 0x010114e9  A3      : 0x3ffc0fa4  A4      : 0x3ffce6f4  A5      : 0x00000001  
A6      : 0x00060b20  A7      : 0x00000000  A8      : 0x800933cc  A9      : 0x3ffce6b0  
A10     : 0x00000001  A11     : 0x3ffce8fc  A12     : 0x00000001  A13     : 0x00000001  
A14     : 0x00060920  A15     : 0x00000000  SAR     : 0x00000004  EXCCAUSE: 0x0000001c  
EXCVADDR: 0x010114fd  LBEG    : 0x400014fd  LEND    : 0x4000150d  LCOUNT  : 0xfffffffa  

ELF file SHA256: 0000000000000000

Backtrace: 0x400933cc:0x3ffce6e0 0x400ed69e:0x3ffce700 0x400d87dd:0x3ffce750 0x400d8cc5:0x3ffce770 0x400d8cfd:0x3ffce7d0 0x400d90be:0x3ffce800 0x400d978e:0x3ffce820 0x40104c2c:0x3ffce840 0x40090b2a:0x3ffce860
  #0  0x400933cc:0x3ffce6e0 in xTimerIsTimerActive at /home/runner/work/esp32-arduino-lib-builder/esp32-arduino-lib-builder/esp-idf/components/freertos/timers.c:957
  #1  0x400ed69e:0x3ffce700 in NimBLEClient::disconnect(unsigned char) at .pio/libdeps/m5stack-atom-lite/NimBLE-Arduino@src-21d326ddac6723274e648607cb71496d/src/NimBLEClient.cpp:471
      (inlined by) NimBLEClient::disconnect(unsigned char) at .pio/libdeps/m5stack-atom-lite/NimBLE-Arduino@src-21d326ddac6723274e648607cb71496d/src/NimBLEClient.cpp:357
  #2  0x400d87dd:0x3ffce750 in disconnectFromServer(NimBLEClient*) at src/ktGATT.cpp:410
  #3  0x400d8cc5:0x3ffce770 in read_gatt_attr(unsigned char, char const*, unsigned short&) at src/ktGATT.cpp:410

Rolling back to v1.3.4 results in the code becoming stable again.

About this issue

Original URL
State: closed
Created 2 years ago
Reactions: 1
Comments: 25 (21 by maintainers)

Most upvoted comments

I had the exact same issue as mentioned in the issue. I am using PlatformIO and for the time being I decided to rollback to 1.3.4. I will wait for PlatformIO to show up 1.3.6 in the updates and then try that out. I will test and post should I come across any issues.

If it’s still not up I guess I’ll start manually publishing releases to pio, which is a shame, I liked that it’s been automatic so far.

Btw can’t thank @h2zero enough for this excellent library. It’s not just one of the best libraries but his support in getting issues solved has been nothing short of AWESOME!!!

Thanks! You’re very welcome.

1.3.6 seems to be working perfectly for me thus far!

That’s what I like to hear! 😃

h2zero on Jan 21, 2022

I had the exact same issue as mentioned in the issue. I am using PlatformIO and for the time being I decided to rollback to 1.3.4. I will wait for PlatformIO to show up 1.3.6 in the updates and then try that out. I will test and post should I come across any issues.

Btw can’t thank @h2zero enough for this excellent library. It’s not just one of the best libraries but his support in getting issues solved has been nothing short of AWESOME!!!

1.3.6 seems to be working perfectly for me thus far!

You may already know this, but if you want to use it before Platformio’s registry picks it up, you can replace h2zero/NimBLE-Arduino @ 1.3.5 with https://github.com/h2zero/NimBLE-Arduino.git#1.3.6 in platformio.ini

thorrak on Jan 21, 2022

I had the exact same issue as mentioned in the issue. I am using PlatformIO and for the time being I decided to rollback to 1.3.4. I will wait for PlatformIO to show up 1.3.6 in the updates and then try that out. I will test and post should I come across any issues.

Btw can’t thank @h2zero enough for this excellent library. It’s not just one of the best libraries but his support in getting issues solved has been nothing short of AWESOME!!!

mm108 on Jan 21, 2022

@thorrak Just pushed release 1.3.6, hopefully all is well now 😄

h2zero on Jan 19, 2022

Looks like it was instantly updated, hopefully all is well now.

h2zero on Jan 22, 2022

I manually published the release to the platformio registry. It could take 24hrs, let’s see if it works 😄. I’ll get on the github actions for this process for the next release.

h2zero on Jan 22, 2022

Great, that was a bug that I have heard of before and thought those changes would fix it but I had no way to test. It’s very timing related so if you don’t have any crashing I would appreciate the feedback so I can incorporate the changes.

I have also identified a patch in the master branch related to the original crashing: 4cacd370bcd252c0fecc91a9c92b356a76ae9136 I will update the release with this as well

h2zero on Jan 19, 2022