From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262543AbVAESeJ (ORCPT ); Wed, 5 Jan 2005 13:34:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262549AbVAESeH (ORCPT ); Wed, 5 Jan 2005 13:34:07 -0500 Received: from fw.osdl.org ([65.172.181.6]:45448 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262543AbVAESat (ORCPT ); Wed, 5 Jan 2005 13:30:49 -0500 Message-ID: <41DC30C9.5050402@osdl.org> Date: Wed, 05 Jan 2005 10:24:09 -0800 From: "Randy.Dunlap" User-Agent: Mozilla Thunderbird 0.9 (X11/20041103) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Konrad Wojas CC: linux-kernel@vger.kernel.org Subject: Re: 2.6.9 oops in poll()? References: <20050103161556.GD31250@vvtp.tudelft.nl> <41DB1C92.7060501@osdl.org> <20050105040841.GI31250@vvtp.tudelft.nl> In-Reply-To: <20050105040841.GI31250@vvtp.tudelft.nl> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Konrad Wojas wrote: > On Tue, Jan 04, 2005 at 02:45:38PM -0800, Randy.Dunlap wrote: > >>I don't see the Oops primary error/reason/fault message. >>Can you dig it up? > > > Sorry, you're right, I looked in messages instead of kern.log: > > Jan 3 07:07:26 wojas kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 > Jan 3 07:07:26 wojas kernel: printing eip: > Jan 3 07:07:26 wojas kernel: c02b5513 > Jan 3 07:07:26 wojas kernel: *pde = 00000000 > Jan 3 07:07:26 wojas kernel: Oops: 0002 [#1] > Jan 3 07:07:26 wojas kernel: PREEMPT > Jan 3 07:07:26 wojas kernel: Modules linked in: sch_ingress cls_u32 sch_sfq sch_cbq ip6table_filter ip6t_LOG ip6_tables ipt_limit lp msr cpuid ipt_state ipt_MASQUERADE ipt_LOG iptable_mangle iptable_filter dummy af_packet es1371 ac97_codec pci_hotplug intel_agp floppy pcspkr rtc sd_mod reiserfs ext2 dm_mod capability commoncap tsdev mousedev joydev evdev wacom usbhid psmouse usb_storage uhci_hcd usbcore eeprom lm75 i2c_sensor i2c_dev i2c_piix4 i2c_core aha152x ipv6 binfmt_misc ip_nat_ftp iptable_nat ip_conntrack_ftp ip_conntrack mga agpgart snd_pcm_oss snd_mixer_oss snd_ens1371 snd_rawmidi snd_seq_device snd_pcm snd_timer snd_page_alloc snd_ac97_codec snd gameport ipt_REJECT ip_tables ne2k_pci 8390 via_rhine mii crc32 sound soundcore sg scsi_mod parport_pc parport ide_cd cdrom ext3 jbd mbcache ide_generic piix ide_disk ide_core unix fbcon font vesafb cfbcopyarea cfbimgblt cfbfillrect > Jan 3 07:07:26 wojas kernel: CPU: 0 > Jan 3 07:07:26 wojas kernel: EIP: 0060:[__func__.4+64363/135712] Not tainted VLI > Jan 3 07:07:26 wojas kernel: EFLAGS: 00010246 (2.6.9-1-686) > Jan 3 07:07:26 wojas kernel: EIP is at 0xc02b5513 > Jan 3 07:07:26 wojas kernel: eax: 00000000 ebx: c0325c00 ecx: c61e57e0 edx: d35b85e0 > Jan 3 07:07:26 wojas kernel: esi: c46082b9 edi: c61e57e4 ebp: 00000056 esp: d5f35f1c > Jan 3 07:07:26 wojas kernel: ds: 007b es: 007b ss: 0068 > Jan 3 07:07:26 wojas kernel: Process python (pid: 30488, threadinfo=d5f34000 task=c0f0faa0) > Jan 3 07:07:26 wojas kernel: Stack: c022db99 c61e57e0 d35b85e0 00000000 00000145 c016c995 c61e57e0 00000000 > Jan 3 07:07:26 wojas kernel: c4608000 d5f35f64 d5f35f68 0000001a c016ca0a 00000063 c4608008 d5f35f64 > Jan 3 07:07:26 wojas kernel: d5f35f68 d5f34000 00000000 00000002 00000000 c4608000 000001ff 082b0d90 > Jan 3 07:07:26 wojas kernel: Call Trace: > Jan 3 07:07:26 wojas kernel: [sock_poll+41/64] sock_poll+0x29/0x40 > Jan 3 07:07:26 wojas kernel: [do_pollfd+149/160] do_pollfd+0x95/0xa0 > Jan 3 07:07:26 wojas kernel: [do_poll+106/208] do_poll+0x6a/0xd0 > Jan 3 07:07:26 wojas kernel: [sys_poll+353/576] sys_poll+0x161/0x240 > Jan 3 07:07:26 wojas kernel: [__pollwait+0/208] __pollwait+0x0/0xd0 > Jan 3 07:07:26 wojas kernel: [syscall_call+7/11] syscall_call+0x7/0xb > Jan 3 07:07:26 wojas kernel: Code: 79 70 74 6f 2f 63 69 70 68 65 72 2e 63 00 69 6e 63 6c 75 64 65 2f 6c 69 6e 75 78 2f 63 72 79 70 74 6f 2e 68 00 6e 61 6d 65 20 20 <20> 20 20 20 20 20 20 3a 20 25 73 0a 00 6d 6f 64 75 6c 65 20 20 > > >>And it looks like you need to use >> ksymoops -k /proc/kallsyms >>to get the addresses converted to symbols. >>Can you redo ksymoops like that, please? > > > Doesn't really look like that's helping.. > > ksymoops 2.4.9 on i686 2.6.9-1-686. Options used > -V (default) > -k /proc/kallsyms (specified) > -l /proc/modules (default) > -o /lib/modules/2.6.9-1-686/ (default) > -m /boot/System.map-2.6.9-1-686 (default) > > Warning (read_ksyms): no kernel symbols in ksyms, is /proc/kallsyms a valid ksyms file? > No modules in ksyms, skipping objects > No ksyms, skipping lsmod This probably needed to use /proc/kallsyms from the dying kernel, which you most likely don't have.... I'm having trouble seeing what sock_poll() called (i.e., where EIP register points to). In the /boot/System.map-2.6.9-1-686 file, is anything near address 0xc02b5513 listed? (or just send me that file privately) > Jan 3 07:07:26 wojas kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000000 > Jan 3 07:07:26 wojas kernel: c02b5513 > Jan 3 07:07:26 wojas kernel: *pde = 00000000 > Jan 3 07:07:26 wojas kernel: Oops: 0002 [#1] > Jan 3 07:07:26 wojas kernel: CPU: 0 > Jan 3 07:07:26 wojas kernel: EIP: 0060:[__func__.4+64363/135712] Not tainted VLI > Jan 3 07:07:26 wojas kernel: EFLAGS: 00010246 (2.6.9-1-686) > Jan 3 07:07:26 wojas kernel: eax: 00000000 ebx: c0325c00 ecx: c61e57e0 edx: d35b85e0 > Jan 3 07:07:26 wojas kernel: esi: c46082b9 edi: c61e57e4 ebp: 00000056 esp: d5f35f1c > Jan 3 07:07:26 wojas kernel: ds: 007b es: 007b ss: 0068 > Jan 3 07:07:26 wojas kernel: Stack: c022db99 c61e57e0 d35b85e0 00000000 00000145 c016c995 c61e57e0 00000000 > Jan 3 07:07:26 wojas kernel: c4608000 d5f35f64 d5f35f68 0000001a c016ca0a 00000063 c4608008 d5f35f64 > Jan 3 07:07:26 wojas kernel: d5f35f68 d5f34000 00000000 00000002 00000000 c4608000 000001ff 082b0d90 > Jan 3 07:07:26 wojas kernel: Call Trace: > Warning (Oops_read): Code line not seen, dumping what data is available > > > >>>ebx; c0325c00 >>>ecx; c61e57e0 >>>edx; d35b85e0 >>>esi; c46082b9 >>>edi; c61e57e4 >>>esp; d5f35f1c > > > Jan 3 07:07:26 wojas kernel: Code: 79 70 74 6f 2f 63 69 70 68 65 72 2e 63 00 69 6e 63 6c 75 64 65 2f 6c 69 6e 75 78 2f 63 72 79 70 74 6f 2e 68 00 6e 61 6d 65 20 20 <20> 20 20 20 20 20 20 3a 20 25 73 0a 00 6d 6f 64 75 6c 65 20 20 > Using defaults from ksymoops -t elf32-i386 -a i386 > > > Code; ffffffd5 <__kernel_rt_sigreturn+1b95/????> > 00000000 <_EIP>: > Code; ffffffd5 <__kernel_rt_sigreturn+1b95/????> > 0: 79 70 jns 72 <_EIP+0x72> > Code; ffffffd7 <__kernel_rt_sigreturn+1b97/????> > 2: 74 6f je 73 <_EIP+0x73> > Code; ffffffd9 <__kernel_rt_sigreturn+1b99/????> > 4: 2f das > Code; ffffffda <__kernel_rt_sigreturn+1b9a/????> > 5: 63 69 70 arpl %bp,0x70(%ecx) > Code; ffffffdd <__kernel_rt_sigreturn+1b9d/????> > 8: 68 65 72 2e 63 push $0x632e7265 > Code; ffffffe2 <__kernel_rt_sigreturn+1ba2/????> > d: 00 69 6e add %ch,0x6e(%ecx) > Code; ffffffe5 <__kernel_rt_sigreturn+1ba5/????> > 10: 63 6c 75 64 arpl %bp,0x64(%ebp,%esi,2) > Code; ffffffe9 <__kernel_rt_sigreturn+1ba9/????> > 14: 65 gs > Code; ffffffea <__kernel_rt_sigreturn+1baa/????> > 15: 2f das > Code; ffffffeb <__kernel_rt_sigreturn+1bab/????> > 16: 6c insb (%dx),%es:(%edi) > Code; ffffffec <__kernel_rt_sigreturn+1bac/????> > 17: 69 6e 75 78 2f 63 72 imul $0x72632f78,0x75(%esi),%ebp > Code; fffffff3 <__kernel_rt_sigreturn+1bb3/????> > 1e: 79 70 jns 90 <_EIP+0x90> > Code; fffffff5 <__kernel_rt_sigreturn+1bb5/????> > 20: 74 6f je 91 <_EIP+0x91> > Code; fffffff7 <__kernel_rt_sigreturn+1bb7/????> > 22: 2e cs > Code; fffffff8 <__kernel_rt_sigreturn+1bb8/????> > 23: 68 00 6e 61 6d push $0x6d616e00 > Code; fffffffd <__kernel_rt_sigreturn+1bbd/????> > 28: 65 20 20 and %ah,%gs:(%eax) > Code; 00000000 Before first symbol > 2b: 20 20 and %ah,(%eax) > Code; 00000002 Before first symbol > 2d: 20 20 and %ah,(%eax) > Code; 00000004 Before first symbol > 2f: 20 20 and %ah,(%eax) > Code; 00000006 Before first symbol > 31: 20 3a and %bh,(%edx) > Code; 00000008 Before first symbol > 33: 20 25 73 0a 00 6d and %ah,0x6d000a73 > Code; 0000000e Before first symbol > 39: 6f outsl %ds:(%esi),(%dx) > Code; 0000000f Before first symbol > 3a: 64 fs > Code; 00000010 Before first symbol > 3b: 75 6c jne a9 <_EIP+0xa9> > Code; 00000012 Before first symbol > 3d: 65 20 20 and %ah,%gs:(%eax) > > 2 warnings issued. Results may not be reliable. -- ~Randy