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If a user only presses ENTER when the PIN is requested (without actually typing the PIN), an assertion is reached and no other unlock method is requested. ``` sh-5.2# systemctl status systemd-cryptsetup@cr_root × systemd-cryptsetup@cr_root.service - Cryptography Setup for cr_root Loaded: loaded (/etc/crypttab; generated) Drop-In: /etc/systemd/system/systemd-cryptsetup@.service.d └─pcr-signature.conf Active: failed (Result: core-dump) since Thu 2024-04-25 08:44:30 UTC; 10min ago Docs: man:crypttab(5) man:systemd-cryptsetup-generator(8) man:systemd-cryptsetup@.service(8) Process: 559 ExecStartPre=/usr/bin/pcr-signature.sh (code=exited, status=0/SUCCESS) Process: 604 ExecStart=/usr/bin/systemd-cryptsetup attach cr_root /dev/disk/by-uuid/a8cbd937-6975-4e61-9120-ce5c03138700 none x-initrd.attach,tpm2-device=auto (code=dumped, signal=ABRT) Main PID: 604 (code=dumped, signal=ABRT) CPU: 19ms Apr 25 08:44:29 localhost systemd[1]: Starting Cryptography Setup for cr_root... Apr 25 08:44:30 localhost systemd-cryptsetup[604]: Assertion '!pin || pin_size > 0' failed at src/cryptsetup/cryptsetup-tokens/cryptsetup-token-systemd-tpm2.c:60, function cryptsetup_token_open_pin(). Aborting. Apr 25 08:44:30 localhost systemd[1]: systemd-cryptsetup@cr_root.service: Main process exited, code=dumped, status=6/ABRT Apr 25 08:44:30 localhost systemd[1]: systemd-cryptsetup@cr_root.service: Failed with result 'core-dump'. Apr 25 08:44:30 localhost systemd[1]: Failed to start Cryptography Setup for cr_root. ``` In this case, `cryptsetup_token_open_pin()` receives an empty (non-NULL) `pin` with `pin_size` equals to 0. ``` 🔐 Please enter LUKS2 token PIN: Breakpoint 3, cryptsetup_token_open_pin (cd=0x5555555744c0, token=0, pin=0x5555555b3cc0 "", pin_size=0, ret_password=0x7fffffffd380, ret_password_len=0x7fffffffd378, usrptr=0x0) at ../src/cryptsetup/cryptsetup-tokens/cryptsetup-token-systemd-tpm2.c:42 42 void *usrptr /* plugin defined parameter passed to crypt_activate_by_token*() API */) { (gdb) continue Assertion '!pin || pin_size > 0' failed at src/cryptsetup/cryptsetup-tokens/cryptsetup-token-systemd-tpm2.c:60, function cryptsetup_token_open_pin(). Aborting. ``` (cherry picked from commit 5cef6b5) (cherry picked from commit 723a7c8)
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