Hi all, I compiled the latest kernel 2.6.22.4 from www.kernel.org and 2.6.23-rc3 from linux-.mips.org using the .config from Debian linux-image-2.6.22-1-r5k_ip32 and activating CONFIG_NFSD_V4 and a few network device drivers. The command I used to compile was: $ fakeroot make-kpkg --revision 2:2.6.22 \ --append-to-version -1gs-r5k-ip32 --arch-in-name buildpackage When I boot an SGI O2 r5k with any of those kernel, I get this error message: --------------------------------------------------------------------------- Loading 64-bit executable Loading program segment 1 at 0x80005000, offset=0x0 4000, size = 0x0 4f8086 5dc000 (cache: 95.0%)Zeroing memory ar 0x82f611, size 0 0x0 Starting ELF64 kernel Exception: <vector=Normal> Status register: 0x34010082<CU1,CU0,FR,DE,IPL=8,KX,MODE=KERNEL> Cause register: 0x8014<CE=0,IP8,EXC=WADE> Exception PC: 0x802204fc, Exception RA: 0x804da7ac Write address error exception, bad address: 0xfffff000 Saved user regs in hex (&gpda 0x81060e08, &_regs 0x81061008): arg: 81070000 0 804ff518 1 tmp: 81070000 1000 80516868 fff8054b ffffffff 81412ef4 a13fb0d0 8 sve: 81070000 4083ae51 0 4608a976 0 0 0 80ee80d5 t8 81070000 t9 0 at 0 v0 0 v1 0 k1 fffff000 gp 81070000 fp 0 sp 0 ra 0 PANIC: Unexpected exception [Press reset or ENTER to restart.] --------------------------------------------------------------------------- If I understand correctly the problem happened at address 0x802204fc, so I checked the system.map file and found ffffffff802204c4 T __bzero ffffffff80220524 t memset_partial If I understand correctly, the kernel was executing the __bzero function and tried accessing the invalid address 0xfffff000. Other, maybe useful, addresses from system.map are: ffffffff804da6e8 t init_bootmem_core ffffffff804da7c8 t $L99 ffffffff80516868 b contig_bootmem_data ffffffff804ff4e8 B boot_mem_map ffffffff804ff7f0 B fw_arg0 >From these number, I guess that boot_mem_map contain an invalid address. Is this correct? Bye, Giuseppe
