furi_check failed crash, or device hang while reading debug logs. #929
Description
Describe the bug.
When attempting to read an NFC device with multiple possible protocols the device immediately crashes with the error code upon reboot of "furi_check failed". Strangely the system instead completely hangs on reading the NFC device while actively reading the logs via serial.
Reproduction
From the main menu open the list with the center button.
Select NFC
Select Read
Hold device to something like a smartphone's NFC transmitter
Target
Presuming this is the thing being targeted? An android phone running android 16
Logs
Firmware version: release-cfw unlshd-083e (63bc04af built on 13-10-2025)
>: log
Current log level: debug
Use <log ?> to list available log levels
Press CTRL+C to stop...
12015 [D][ViewDispatcher] View changed while key press 20009370 -> 20014710. Sen ding key: OK, type: Release, sequence: 00000004 to previous view
16309 [I][AnimationManager] Unload animation 'L3_Intruder_alert_128x64'
16326 [I][Loader] Loading /ext/apps/NFC/nfc.fap
16487 [I][Elf] Total size of loaded sections: 59925
16490 [I][Loader] Loaded in 164ms
17862 [I][Elf] Total size of loaded sections: 9036
17865 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
17911 [I][Elf] Total size of loaded sections: 896
17914 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
17959 [I][Elf] Total size of loaded sections: 420
17961 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18019 [I][Elf] Total size of loaded sections: 2296
18022 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18071 [I][Elf] Total size of loaded sections: 1940
18074 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18132 [I][Elf] Total size of loaded sections: 9228
18135 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18203 [I][Elf] Total size of loaded sections: 3076
18209 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18262 [I][Elf] Total size of loaded sections: 620
18265 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18325 [I][Elf] Total size of loaded sections: 4892
18328 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18377 [I][Elf] Total size of loaded sections: 1372
18380 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18435 [I][Elf] Total size of loaded sections: 284
18438 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18500 [I][Elf] Total size of loaded sections: 1352
18503 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18549 [I][Elf] Total size of loaded sections: 828
18552 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18609 [I][Elf] Total size of loaded sections: 1844
18612 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18658 [I][Elf] Total size of loaded sections: 548
18661 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18712 [I][Elf] Total size of loaded sections: 3096
18715 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18765 [I][Elf] Total size of loaded sections: 1032
18768 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18840 [I][Elf] Total size of loaded sections: 1392
18843 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18897 [I][Elf] Total size of loaded sections: 1608
18900 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
18949 [I][Elf] Total size of loaded sections: 908
18951 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19017 [I][Elf] Total size of loaded sections: 1212
19020 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19077 [I][Elf] Total size of loaded sections: 5064
19080 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19134 [I][Elf] Total size of loaded sections: 4616
19137 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19222 [I][Elf] Total size of loaded sections: 4416
19225 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19278 [I][Elf] Total size of loaded sections: 4608
19281 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19330 [I][Elf] Total size of loaded sections: 1324
19333 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19386 [I][Elf] Total size of loaded sections: 3276
19389 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19459 [I][Elf] Total size of loaded sections: 3532
19462 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19521 [I][Elf] Total size of loaded sections: 1144
19524 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19576 [I][Elf] Total size of loaded sections: 2586
19579 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19663 [I][Elf] Total size of loaded sections: 9532
19666 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19717 [I][Elf] Total size of loaded sections: 1304
19720 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19772 [I][Elf] Total size of loaded sections: 1956
19775 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19841 [I][Elf] Total size of loaded sections: 368
19844 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19896 [I][Elf] Total size of loaded sections: 1464
19899 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
19950 [I][Elf] Total size of loaded sections: 700
19953 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
20015 [I][Elf] Total size of loaded sections: 1580
20018 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
20071 [I][Elf] Total size of loaded sections: 1032
20074 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
20134 [I][Elf] Total size of loaded sections: 1432
20137 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
20227 [I][Elf] Total size of loaded sections: 1853
20230 [D][Fap] Library for NfcSupportedCardPlugin, API v. 1 loaded
20234 [D][NfcSupportedCards] Loaded 40 plugins
20239 [D][ViewDispatcher] View changed while key press 20011890 -> 20011B50. Sen ding key: OK, type: Release, sequence: 00000020 to previous view
20253 [D][NfcScanner] Found 5 base protocols
20258 [D][DolphinState] icounter 3031, butthurt 9
20267 [D][Nfc] FWT Timeout
20289 [D][Nfc] FWT Timeout
20312 [D][Nfc] FWT Timeout
20363 [D][Nfc] FWT Timeout
20385 [D][Nfc] FWT Timeout
20406 [D][Nfc] FWT Timeout
20430 [D][Nfc] FWT Timeout
20455 [D][Nfc] FWT Timeout
20506 [D][Nfc] FWT Timeout
20528 [D][Nfc] FWT Timeout
20549 [D][Nfc] FWT Timeout
20571 [D][Nfc] FWT Timeout
20594 [D][Nfc] FWT Timeout
20645 [D][Nfc] FWT Timeout
20667 [D][Nfc] FWT Timeout
20688 [D][Nfc] FWT Timeout
20710 [D][Nfc] FWT Timeout
20733 [D][Nfc] FWT Timeout
20784 [D][Nfc] FWT Timeout
20806 [D][Nfc] FWT Timeout
20841 [D][Nfc] FWT Timeout
20863 [D][Nfc] FWT Timeout
20886 [D][Nfc] FWT Timeout
20937 [D][Nfc] FWT Timeout
20959 [D][Nfc] FWT Timeout
20980 [D][Nfc] FWT Timeout
21002 [D][Nfc] FWT Timeout
21025 [D][Nfc] FWT Timeout
21087 [D][Nfc] FWT Timeout
21108 [D][Nfc] FWT Timeout
21130 [D][Nfc] FWT Timeout
21153 [D][Nfc] FWT Timeout
21169 [D][NfcScanner] Found 0 children
21171 [I][NfcScanner] Detected 1 protocols
21280 [W][ViewPort] ViewPort lockup: see applications/services/gui/view_port.c:2 45
21286 [D][NfcProtocolSupport] Loading /assets/plugins/nfc_felica.fal
21342 [I][Elf] Total size of loaded sections: 1689
21345 [D][Fap] Library for NfcProtocolSupportPlugin, API v. 1 loaded
21348 [D][Fap] Library for NfcProtocolSupportPlugin, API v. 1 loaded
21374 [D][FelicaPoller] Idle
21376 [D][FelicaPoller] Activate
21382 [D][FelicaPoller] List System
Anything else?
On occasion it will get to the point where it asks what protocall to use, if FeliCa is chosen the device immediately crashes, if ISO14443-4 a/b is chosen instead, reading proceeds as normal.