From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="iso-8859-1" From: Trevor Woerner Reply-To: ppc339@vtnet.ca To: "linuxppc-embedded" Subject: Re: help: why show "Oops: kernel access of bad area, sig: 11" Date: Tue, 20 May 2003 21:51:02 -0400 References: In-Reply-To: MIME-Version: 1.0 Message-Id: <200305202151.02291.ppc339@vtnet.ca> Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: On May 19, 2003 04:33 am, guo_zhenglin wrote: > Oops: kernel access of bad area, sig: 11 > NIP: C0076F0C XER: 80009E6C LR: C007B620 SP: C017DE80 REGS: > c017ddd0 TRAP: 0300d > MSR: 00001032 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11 > DAR: 000003F9, DSISR: 00018469 > TASK = c017c000[1] 'swapper' Last syscall: 120 > last math 00000000 last altivec 00000000 > GPR00: 00000000 C017DE80 C017C000 C017DE88 00000001 00000000 C0D203B8 > 000003F8 > GPR08: 00000000 000003F8 00000000 00000000 0000000D FFFFFFFF C007AC70 > C007A4C4 > GPR16: C0079010 C0079CDC C007A5E0 C00770A8 C007701C C007A154 C00790E0 > C0079058 > GPR24: C0079D64 C0078F90 C0078F78 C00F28F8 C00F28F8 C011A76C C011A830 > C017DE88 > Call backtrace: > C0011AE4 C0101028 C00FA5FC C00FA644 C00022CC C0006BE4 > Kernel panic: Attempted to kill init! > <0>Rebooting in 180 seconds.. When you get an "access of bad area" oops have a look at the DEAR register (I think you misspelled it as DAR above). 0x3f9 is the base address of COM1 on an x86 machine (http://www.sput.nl/hardware/io.html). My guess is you've got something wrong with your UART code. I believe this is where your (current) problem lies. Just a guess. Trevor ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/