It was observed that the core observed right after the QFX5110 reboot was done.

The FPGA read/write api calls are used without initializing the FPGA driver.

On QFX5100 and QFX5200, if Precision Time Protocol (PTP) Field Programmable Gate Array (FPGA) is configured then on device reboot the clock sync process (clksyncd) core will be observed.

Due to hardware errors, the PTP FPGA driver initialization is failing, and on the device reboot the clksyncd core is observed with the below error logs.
user@device#fpc0 qfx_ptp_fpga_register_ec_fpga:974: libdrv_ioctl (elit) failed for tmc fpga -12
The clksyncd will recover on its own and no functional impact will be there.

Fix will be done in future release