From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 14 Jul 2004 13:33:47 +0800 From: "hu" To: "linuxppc-dev" Subject: Oops:kernel access of bad areasig:11 Mime-Version: 1.0 Content-Type: text/plain Message-Id: <20040714053136.86F102F86F@smtp.263.net> Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: 1)environment Linux kernel 2.4.4-rthal5 ppcboot 1.1.5 MPC823 board 2)I'm running a device driver which read data from touchpanel which use SIU_IRQ2, but I often get message like that: Oops: kernel access of bad area, sig: 11 NIP: C000C4E8 XER: C000206F LR: C000C4E0 SP: C07FBEF0 REGS: c07fbe40 TRAP: 0300 MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11 DAR: 00000004,DISR: 0000013C last math 00000000 last altivec 00000000 GPR00: 00000002 C07FBEF0 C07FA000 C07FBF08 00009032 C0C09E58 C0C08000 00000020 GPR08: C01A9138 C0195364 C0C08000 C07FBF30 2F7B6A70 1007C2B8 40024400 00000000 GPR16: 00000000 00000000 00000000 00000000 00000000 00003400 00580000 00002C7E GPR24: 00000000 0001C200 00000001 C07FBEF8 00000000 C07FBF00 00664BDA C07FBEF0 Call backtrace: C000C468 C002B440 C0004DA8 3) I look through past document in linux-embedded, and I check /arch/ppc/kernel/m8xx_setup.c, it exists: fp = binfo->bi_intfreq * 1000000 / 16; and /arch/ppc/8xx_io/commproc.c, it exits: #define BRG_INT_CLK (((bd_t *)__res)->bi_intfreq * 1000000 ) ------------------------------ John Hu E-mail: hl76@263.net ------------------------------ ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/