The results of the backtrace are as follows : C0016204 put_dirty_page C0016A98 handle_mm_fault C0009098 do_page_fault C0002544 _switch 018A4490 ??? 300E88A4 ??? 0180C6D4 ??? 0180C5D8 ??? 01803250 ??? 01802B64 ??? 01801D80 ???
Which order are these called? I haven't been able to link all four together, although I do know that do_page_fault calls handle_mm_fault, the scheduler calls _switch, execve calls put_dirty_page via load_elf_binary. This all happens during the rc.sysinit. -----Original Message----- From: Frank Rowand [mailto:[EMAIL PROTECTED] Sent: Thursday, June 22, 2000 3:29 PM To: Lucinda Schafer Cc: linuxppc-embedded at lists.linuxppc.org Subject: Re: Software Emulation Panic, Lucinda Schafer wrote: > > When I get a kernel panic I see: > > NIP: 00001FFC XER: 8000FF7F LR: 00000988 REGS: c0e87c90 TRAP: 1000 > MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00 > TASK = c0e86000[7] 'rc.sysinit' mm->pgd c0e8b000 Last syscall: 67 > last math 00000000 > GPR00: 00000000 C0E87D40 C0E86000 C0E87D50 0189EE34 C0133404 C0E88278 > C0E8B000 > GPR08: C00DA634 00FBA9E1 00FBA9E1 00FBA9E1 3555F593 018A31D0 00000000 > 00000D08 > GPR16: 000000C1 01005000 0100A400 00300008 00001032 00E87D40 C00162F0 > 00009032 > GPR24: 0189EE34 C0E88278 C0615760 00FBA8A1 C0FBA000 C0E86000 C0F5F000 > C0132510 Look at the addresses that are of the form 0xCxxxxxxx in the backtrace, they may give you a clue: > Call backtrace: > C0E87DF0 C0016204 C0016A98 C0009098 C0002544 018A4490 300E88A4 > 0180C6D4 0180C5D8 01803250 01802B64 01801D80 > Instruction DUMP: > > If the NIP = 00001FFC, then where is that? That is in the middle of > "Trap_1f" according to the System.map. > > In the call backtrace, how do I know what addresses such as 018a4490 or > 300e88a4 fall? System.map only has C000000++? > > Please be patient with me. I am still learning. I really need to figure out > what is going on here. I come from the world of 8051 assembly programmed > into ROM. Memory management, task switching, and embedded operating systems > are new to me. > > Lucinda Schafer > Staff Software Engineer > Adaptive Micro-Ware, Inc. > -Frank -- Frank Rowand <frank_rowand at mvista.com> MontaVista Software, Inc ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
