While 5.8.0 worked fine on my HP RP2470 (Gentoo with 10.2.0 kgcc), yesterdays dddcbc139e96 and todays a1d21081a60d crash on boot. I have started bisecting it. Last output lines from 5.8.0-13161-gdddcbc139e96: [ 1.150985] 1. Crescendo 750 W2 at 0xfffffffffffa0000 [160] { 0, 0x0, 0x5e3, 0x00004 } [ 1.243570] 2. Memory at 0xfffffffffed08000 [8] { 1, 0x0, 0x09b, 0x00009 } [ 1.243792] 3. Astro BC Runway Port at 0xfffffffffed00000 [0] { 12, 0x0, 0x582, 0x0000b } [ 1.382893] 4. Elroy PCI Bridge at 0xfffffffffed30000 [0/0] { 13, 0x0, 0x782, 0x0000a } [ 1.522243] 5. Elroy PCI Bridge at 0xfffffffffed34000 [0/2] { 13, 0x0, 0x782, 0x0000a } [ 1.660767] 6. Elroy PCI Bridge at 0xfffffffffed38000 [0/4] { 13, 0x0, 0x782, 0x0000a } [ 1.799247] 7. Elroy PCI Bridge at 0xfffffffffed3c000 [0/6] { 13, 0x0, 0x782, 0x0000a } [ 1.799500] ********** VIRTUAL FRONT PANEL ********** System Boot detected ***************************************** LEDs: RUN ATTENTION FAULT REMOTE POWER ON FLASH OFF ON ON LED State: There was a system interruption that did not take the system down. Check Chassis and Console Logs for error messages. processor system initialization 1C00 ***************************************** ************ EARLY BOOT VFP ************* End of early boot detected ***************************************** h support not available. [ 2.639001] HugeTLB registered 2.00 MiB page size, pre-allocated 0 pages ********** VIRTUAL FRONT PANEL ********** System Boot detected ***************************************** LEDs: RUN ATTENTION FAULT REMOTE POWER ON FLASH FLASH ON ON LED State: System Running. Unexpected Reboot. Non-critical Error Detected. Check Chassis and Console Logs for error messages. processor system panic 1B00 --------------------------------------------------------------------------------------------------- Last output lines from 5.8.0-13249-ga1d21081a60d: [ 1.151696] 1. Crescendo 750 W2 at 0xfffffffffffa0000 [160] { 0, 0x0, 0x5e3, 0x00004 } [ 1.242819] 2. Memory at 0xfffffffffed08000 [8] { 1, 0x0, 0x09b, 0x00009 } [ 1.243041] 3. Astro BC Runway Port at 0xfffffffffed00000 [0] { 12, 0x0, 0x582, 0x0000b } [ 1.383414] 4. Elroy PCI Bridge at 0xfffffffffed30000 [0/0] { 13, 0x0, 0x782, 0x0000a } [ 1.523072] 5. Elroy PCI Bridge at 0xfffffffffed34000 [0/2] { 13, 0x0, 0x782, 0x0000a } [ 1.662053] 6. Elroy PCI Bridge at 0xfffffffffed38000 [0/4] { 13, 0x0, 0x782, 0x0000a } [ 1.800405] 7. Elroy PCI Bridge at 0xfffffffffed3c000 [0/6] { 13, 0x0, 0x782, 0x0000a } [ 1.800658] ********** VIRTUAL FRONT PANEL ********** System Boot detected ***************************************** LEDs: RUN ATTENTION FAULT REMOTE POWER ON FLASH OFF ON ON LED State: There was a system interruption that did not take the system down. Check Chassis and Console Logs for error messages. processor system initialization 1C00 ***************************************** ************ EARLY BOOT VFP ************* End of early boot detected ***************************************** ********** VIRTUAL FRONT PANEL ********** System Boot detected ***************************************** LEDs: RUN ATTENTION FAULT REMOTE POWER ON FLASH FLASH ON ON LED State: System Running. Unexpected Reboot. Non-critical Error Detected. Check Chassis and Console Logs for error messages. processor system panic 1B00 ***************************************** ************ EARLY BOOT VFP ************* End of early boot detected ***************************************** ********** VIRTUAL FRONT PANEL ********** System Boot detected ***************************************** LEDs: RUN ATTENTION FAULT REMOTE POWER ON FLASH FLASH ON ON LED State: System Running. Unexpected Reboot. Non-critical Error Detected. Check Chassis and Console Logs for error messages. processor system panic 1B00 -- Meelis Roos <mroos@xxxxxxxx>