Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755927AbYAGMOI (ORCPT ); Mon, 7 Jan 2008 07:14:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754286AbYAGMN4 (ORCPT ); Mon, 7 Jan 2008 07:13:56 -0500 Received: from e28smtp01.in.ibm.com ([59.145.155.1]:48736 "EHLO e28smtp01.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753997AbYAGMNy (ORCPT ); Mon, 7 Jan 2008 07:13:54 -0500 Message-ID: <47821774.8010701@linux.vnet.ibm.com> Date: Mon, 07 Jan 2008 17:43:40 +0530 From: Kamalesh Babulal User-Agent: Thunderbird 1.5.0.14pre (X11/20071023) MIME-Version: 1.0 To: Linux Kernel Mailing List CC: Ingo Molnar , Peter Zijlstra , dmitry.adamushko@gmail.com, Srivatsa Vaddagiri , Dhaval Giani , Andy Whitcroft , Balbir Singh Subject: Re: Linux 2.6.24-rc7 kernel BUG at kernel/sched.c:5156! References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2918 Lines: 76 Hi, When booting the 2.6.24-rc7 kernel on the powerpc, kernel bug at kernel.sched.c is triggered [ 0.000000] Kernel command line: ro console=hvc0 rhgb quiet root=LABEL=/ [ 0.149567] BUG: scheduling while atomic: kthreadd/2/0x0006f34c [ 0.149655] BUG: scheduling while atomic: kthreadd/3/0xbe0d8168 [ 0.149714] ------------[ cut here ]------------ [ 0.149722] kernel BUG at kernel/sched.c:5156! cpu 0x0: Vector: 700 (Program Check) at [c0000001be0dbd70] pc: c00000000006c090: .migration_thread+0x64/0x31c lr: c00000000008e348: .kthread+0x78/0xc4 sp: c0000001be0dbff0 msr: 8000000000029032 current = 0xc0000000ee11ccc0 paca = 0xc000000000532d00 pid = 3, comm = kthreadd kernel BUG at kernel/sched.c:5156! enter ? for help [c0000001be0dc0b0] c00000000008e348 .kthread+0x78/0xc4 [c0000001be0dc140] c00000000002a550 .kernel_thread+0x4c/0x68 0:mon> t [c0000001be0dc0b0] c00000000008e348 .kthread+0x78/0xc4 [c0000001be0dc140] c00000000002a550 .kernel_thread+0x4c/0x68 0:mon> r R00 = 0000000000000001 R16 = 4000000001c00000 R01 = c0000001be0dbff0 R17 = c000000000403920 R02 = c0000000006072f8 R18 = 0000000000000000 R03 = 0000000000000000 R19 = 000000000019b000 R04 = c0000000ee11ccc0 R20 = c0000000004c9550 R05 = 0000000000000000 R21 = 00000000020c9550 R06 = c000000000532d00 R22 = 00000000020c97c0 R07 = c0000001be0d81b0 R23 = c0000000004c97c0 R08 = 0000000000000000 R24 = 00000000018bf8d0 R09 = c0000000ee11ccbf R25 = 0000000000000000 R10 = fffffffffffffffc R26 = c0000000006a4968 R11 = c000000000532d00 R27 = c0000000006a00b0 R12 = c00000000002a550 R28 = c0000000ee143c98 R13 = c000000000532d00 R29 = c000000000f35b80 R14 = 0000000000000000 R30 = c0000000005b4190 R15 = c0000000004050a0 R31 = c0000000005cf910 pc = c00000000006c090 .migration_thread+0x64/0x31c lr = c00000000008e348 .kthread+0x78/0xc4 msr = 8000000000029032 cr = 28000024 ctr = c00000000006c02c xer = 0000000020000004 trap = 700 (gdb) p kthread $1 = {int (void *)} 0xc00000000008e2d0 (gdb) p/x 0xc00000000008e2d0+0x78 $2 = 0xc00000000008e348 (gdb) l *0xc00000000008e348 0xc00000000008e348 is in kthread (kernel/kthread.c:78). 73 __set_current_state(TASK_UNINTERRUPTIBLE); 74 complete(&create->started); 75 schedule(); 76 77 if (!kthread_should_stop()) 78 ret = threadfn(data); 79 80 /* It might have exited on its own, w/o kthread_stop. Check. */ 81 if (kthread_should_stop()) { 82 kthread_stop_info.err = ret; -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/