Hi, Board: CSB272 IBM PPC405GP Linux kernel version: 2.4.17 Linux kernel can boot nfs root filesystem on the board. Shell works correctly. However the system will oops when execute big applications, such as copying a file which is larger than 2MBytes. The following is ksymoops:
The size of vmlinux.srec is 2.076Mbytes. root at 192.9.200.145:/# cp vmlinux.srec vmlinux.srec.bak Oops: kernel access of bad area, sig: 11 NIP: C002CA74 XER: 00000000 LR: C002CA50 SP: C017BDA0 REGS: c017bce0 TRAP: 0800 Using defaults from ksymoops -t elf32-little -a unknown MSR: 00001030 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11 TASK = c0179ff0[0] 'swapper' Last syscall: 120 last math 00000000 last altivec 00000000 GPR00: C01D26D0 C017BDA0 C0179FF0 00000001 00009030 00000006 C02C9015 FFFFFC18 GPR08: C1FD2240 38300D0A C02D3640 42333846 42000022 10021A24 00000000 00000030 GPR16: 00000000 00000000 00000000 00000001 00001032 0017BEA0 00000000 C0002BCC GPR24: C0003F78 C01A0000 00000010 C0180000 00000020 C01D26C8 C017BDA8 C01D26C0 Call backtrace: C0016750 C00EBDB0 C00D7930 C00D7CD4 C0003EC8 C0003FB4 C0002BCC C0021F90 C00044E0 C0004508 C000240C C018C794 C0002318 Kernel panic: Aiee, killing interrupt handler! Warning (Oops_read): Code line not seen, dumping what data is available >>???; c002ca74 <kmalloc+e0/1b0> <===== Trace; c0016750 <get_fast_time+1c/2c> Trace; c00ebdb0 <alloc_skb+124/204> Trace; c00d7930 <ppc405_rx_fill+50/134> Trace; c00d7cd4 <ppc405_eth_rxeob+d4/108> Trace; c0003ec8 <ppc_irq_dispatch_handler+1b0/260> Trace; c0003fb4 <do_IRQ+3c/c0> Trace; c0002bcc <ret_from_intercept+0/8> Trace; c0021f90 <check_pgt_cache+20/30> Trace; c00044e0 <idled+50/68> Trace; c0004508 <cpu_idle+10/24> Trace; c000240c <rest_init+30/40> Trace; c018c794 <start_kernel+150/164> Trace; c0002318 <start_here+48/a0> Hope for helps Jikun Sun ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
