Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965003AbWHULYx (ORCPT ); Mon, 21 Aug 2006 07:24:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964961AbWHULYx (ORCPT ); Mon, 21 Aug 2006 07:24:53 -0400 Received: from calculon.skynet.ie ([193.1.99.88]:26569 "EHLO calculon.skynet.ie") by vger.kernel.org with ESMTP id S965003AbWHULYw (ORCPT ); Mon, 21 Aug 2006 07:24:52 -0400 Date: Mon, 21 Aug 2006 12:24:51 +0100 (IST) From: Dave Airlie X-X-Sender: airlied@skynet.skynet.ie To: Frederik Deweerdt Cc: Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: 2.6.18-rc4-mm1 BUG, drm relatedy In-Reply-To: <20060819230821.GE720@slug> Message-ID: References: <20060813012454.f1d52189.akpm@osdl.org> <20060815130345.GA3817@slug> <20060819230821.GE720@slug> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6317 Lines: 129 >> [ 40.276000] [drm:drm_unlock] *ERROR* Process 8914 using kernel context 0 Can you send me an lspci -v (or have you already??) I've been busy lately so having trouble following this stuff in a timely manner, I think this is an error path which the userpsace code doesn't clean up properly, your patch is most definitely not correct.. if I had to guess I'd say you have an AGP machine + card but no AGP support driver loaded... Dave. >> [ 41.024000] BUG: unable to handle kernel paging request at virtual address 6e756f73 >> [ 41.024000] printing eip: >> [ 41.024000] c01b5771 >> [ 41.024000] *pde = 00000000 >> [ 41.024000] Oops: 0000 [#1] >> [ 41.024000] 8K_STACKS PREEMPT >> [ 41.024000] last sysfs file: /devices/pci0000:00/0000:00:1d.7/usb5/5-0:1.0/bInterfaceProtocol >> [ 41.024000] Modules linked in: snd_seq snd_seq_device ohci_hcd parport_pc parport pcspkr ipw2200 yenta_socket rsrc_nonstatic pcmcia_core snd_intel8x0 snd_ac97_codec snd_ac97_bus snd_pcm snd_timer snd soundcore snd_page_alloc ehci_hcd uhci_hcd usbcore cpufreq_stats cpufreq_powersave cpufreq_ondemand cpufreq_conservative speedstep_centrino freq_table processor ac battery i915 drm tg3 joydev tsdev >> [ 41.024000] CPU: 0 >> [ 41.024000] EIP: 0060:[] Not tainted VLI >> [ 41.024000] EFLAGS: 00210246 (2.6.18-rc4-mm1-def01 #1) >> [ 41.024000] EIP is at sysfs_lookup+0x65/0xb0 >> [ 41.024000] eax: f3161e40 ebx: f316842c ecx: f73f6280 edx: f316842c >> [ 41.024000] esi: 6e756f73 edi: f3161ec4 ebp: f6c35dfc esp: f6c35de0 >> [ 41.024000] ds: 007b es: 007b ss: 0068 >> [ 41.024000] Process modprobe (pid: 8952, ti=f6c34000 task=f7d17550 task.ti=f6c34000) >> [ 41.024000] Stack: f316842c f3161e94 f31684bc 00000000 fffffff4 f73f72ec f3161e40 f6c35e1c >> [ 41.024000] c0184d42 f73f72ec f3161e40 00000000 ffffffff c03a6656 12fd28db f6c35e4c >> [ 41.024000] c0184e02 f6c35e30 f3161ee8 00000000 12fd28db 00000005 c03a6651 c038230e >> [ 41.024000] Call Trace: >> [ 41.024000] [] __lookup_hash+0x9d/0xcc >> [ 41.024000] [] lookup_one_len+0x71/0x86 >> [ 41.024000] [] create_dir+0x43/0x23f >> [ 41.024000] [] sysfs_create_subdir+0x26/0x28 >> [ 41.024000] [] sysfs_create_group+0x77/0x97 >> [ 41.024000] [] dpm_sysfs_add+0x1e/0x20 >> [ 41.024000] [] device_pm_add+0x64/0x89 >> [ 41.024000] [] device_add+0x1d9/0x380 >> [ 41.024000] [] device_register+0x1a/0x20 >> [ 41.024000] [] device_create+0xaa/0xc4 >> [ 41.024000] [] snd_register_device+0xcf/0x104 [snd] >> [ 41.024000] [] snd_sequencer_device_init+0x4e/0x7c [snd_seq] >> [ 41.024000] [] alsa_seq_init+0x2f/0x51 [snd_seq] >> [ 41.024000] [] sys_init_module+0x163/0x221 >> [ 41.024000] [] sysenter_past_esp+0x56/0x8d >> [ 41.024000] [] 0xb7fb0410 >> [ 41.024000] [] show_trace_log_lvl+0x2f/0x45 >> [ 41.024000] [] show_stack_log_lvl+0x98/0xb2 >> [ 41.024000] [] show_registers+0x1eb/0x289 >> [ 41.024000] [] die+0x134/0x241 >> [ 41.024000] [] do_page_fault+0x395/0x620 >> [ 41.024000] [] error_code+0x39/0x40 >> [ 41.024000] [] __lookup_hash+0x9d/0xcc >> [ 41.024000] [] lookup_one_len+0x71/0x86 >> [ 41.024000] [] create_dir+0x43/0x23f >> [ 41.024000] [] sysfs_create_subdir+0x26/0x28 >> [ 41.024000] [] sysfs_create_group+0x77/0x97 >> [ 41.024000] [] dpm_sysfs_add+0x1e/0x20 >> [ 41.024000] [] device_pm_add+0x64/0x89 >> [ 41.024000] [] device_add+0x1d9/0x380 >> [ 41.024000] [] device_register+0x1a/0x20 >> [ 41.024000] [] device_create+0xaa/0xc4 >> [ 41.024000] [] snd_register_device+0xcf/0x104 [snd] >> [ 41.024000] [] snd_sequencer_device_init+0x4e/0x7c [snd_seq] >> [ 41.024000] [] alsa_seq_init+0x2f/0x51 [snd_seq] >> [ 41.024000] [] sys_init_module+0x163/0x221 >> [ 41.024000] [] sysenter_past_esp+0x56/0x8d >> [ 41.024000] ======================= >> [ 41.024000] Code: 42 fc 89 c3 8b 40 04 0f 18 00 90 3b 55 ec 75 e6 8b 45 f0 83 c4 10 5b 5e 5f 5d c3 89 1c 24 e8 27 e9 ff ff 89 c6 8b 45 0c 8b 78 48 ae 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 85 c0 75 bd f6 >> [ 41.024000] EIP: [] sysfs_lookup+0x65/0xb0 SS:ESP 0068:f6c35de0 >> [ 41.024000] >> >> > Hi Andrew, > > I think that this definitely qualifies as a drm bug. Here are the tests > that I did and that make me think so: > - Removing the line 'Load "dri"' from xorg.conf makes the oops > disappear. > - The bisection I performed indicates that the problem comes from the > following set of patches: > git-drm.patch > drm-build-fix.patch > drm-build-fixes-2.patch > allow-drm-detection-of-new-via-chipsets.patch > git-drm-build-fix.patch > - Appliying the attached patch makes the oops disapear too. > > Now, I don't know the drm code, and I'm not able to explain why the fix > works... Any ideas? > > Regards, > Frederik > > Signed-off-by: Frederik Deweerdt > diff --git a/drivers/char/drm/drm_lock.c b/drivers/char/drm/drm_lock.c > index f9e4530..a9e01b7 100644 > --- a/drivers/char/drm/drm_lock.c > +++ b/drivers/char/drm/drm_lock.c > @@ -65,12 +65,6 @@ int drm_lock(struct inode *inode, struct > if (copy_from_user(&lock, (drm_lock_t __user *) arg, sizeof(lock))) > return -EFAULT; > > - if (lock.context == DRM_KERNEL_CONTEXT) { > - DRM_ERROR("Process %d using kernel context %d\n", > - current->pid, lock.context); > - return -EINVAL; > - } > - > DRM_DEBUG("%d (pid %d) requests lock (0x%08x), flags = 0x%08x\n", > lock.context, current->pid, > dev->lock.hw_lock->lock, lock.flags); > -- David Airlie, Software Engineer http://www.skynet.ie/~airlied / airlied at skynet.ie Linux kernel - DRI, VAX / pam_smb / ILUG - 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/