On Fri, Dec 10, 2010 at 10:34:06PM +0000, Chris Clayton wrote: > I'm not subscribed, so please cc me on any reply. > > With rc kernels from 2.6.37, X frequently (approx 3 boots out of every 4) fails > to start. dmesg shows the oops below. I can bisect over the weekend - probably > Sunday - if no answer comes up in the meantime. I get the same oops with rc3, > rc and rc5. rc2 doesn't get as far as trying to start X. Happy to test patches > or provide additional diagnostics, but I'll be off line soon until 20:00 or so > UK time tomorrow. > > The hardware in my system is: > 00:00.0 Host bridge: Intel Corporation 4 Series Chipset DRAM Controller (rev 03) > 00:02.0 VGA compatible controller: Intel Corporation 4 Series Chipset Integrated > Graphics Controller (rev 03) > 00:02.1 Display controller: Intel Corporation 4 Series Chipset Integrated > Graphics Controller (rev 03) > 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition > Audio Controller (rev 01) > 00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 > (rev 01) > 00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 > (rev 01) > 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #1 (rev 01) > 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #2 (rev 01) > 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #3 (rev 01) > 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI > Controller #4 (rev 01) > 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI > Controller (rev 01) > 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) > 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface > Bridge (rev 01) > 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller > (rev 01) > 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE > Controller (rev 01) > 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01) > 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI > Express Gigabit Ethernet controller (rev 02) > 03:00.0 Multimedia controller: Philips Semiconductors SAA7131/SAA7133/SAA7135 > Video Broadcast Decoder (rev d1) > 03:01.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture > (rev 11) > 03:01.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev > 11) > 03:07.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 > Controller (PHY/Link) > > ==================OOPS============================== > <snip> > > [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 > BUG: unable to handle kernel NULL pointer dereference at (null) > IP: [<c13229ef>] __mutex_lock_slowpath+0x9f/0x170 > *pdpt = 0000000034676001 *pde = 0000000000000000 > Oops: 0002 [#1] PREEMPT SMP > last sysfs file: /sys/module/drm_kms_helper/initstate > Modules linked in: i915 drm_kms_helper drm fb fbdev cfbcopyarea video backlight > output cfbimgblt cfbfillrect xt_state iptable_filter ipt_MASQUERADE iptable_nat > nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 saa7134_alsa tda10048 > saa7134_dvb videobuf_dvb dvb_core mt20xx tea5767 tda9887 msp3400 gspca_zc3xx > gspca_main tda18271 tda8290 ir_lirc_codec tuner lirc_dev bttv i2c_algo_bit > btcx_risc snd_bt87x ir_common uhci_hcd ir_core saa7134 v4l2_common videodev > v4l1_compat ehci_hcd videobuf_dma_sg videobuf_core tveeprom evdev [last > unloaded: floppy] > > Pid: 1725, comm: X Not tainted 2.6.37-rc5+ #476 EG41MF-US2H/EG41MF-US2H > EIP: 0060:[<c13229ef>] EFLAGS: 00013246 CPU: 3 > EIP is at __mutex_lock_slowpath+0x9f/0x170 > EAX: 00000000 EBX: f4403410 ECX: f4403420 EDX: f4641dd8 > ESI: f4403414 EDI: 00000000 EBP: f4403418 ESP: f4641dd4 > DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 > Process X (pid: 1725, ti=f4640000 task=f3c67390 task.ti=f4640000) > Stack: > f3c67390 f4403418 00000000 f46a3800 f4403410 f4fd14f0 f425f600 f4403400 > c13228a6 f4fd1000 f4fd14f0 f8841b6c c10aabb2 ffffffff 05100004 f4c34000 > f4df72c0 c10aabf7 f4403410 00000001 f425f600 ffffffed f425f604 f46bfe40 > Call Trace: > [<c13228a6>] ? mutex_lock+0x16/0x30 > [<f8841b6c>] ? bttv_open+0xac/0x280 [bttv] > [<c10aabb2>] ? cdev_get+0x52/0x90 > [<c10aabf7>] ? exact_lock+0x7/0x10 > [<f87095a7>] ? v4l2_open+0xb7/0xd0 [videodev] > [<c10ab2ea>] ? chrdev_open+0xda/0x1b0 > [<c10a5f25>] ? __dentry_open+0xd5/0x280 > [<c10a7068>] ? nameidata_to_filp+0x68/0x70 > [<c10ab210>] ? chrdev_open+0x0/0x1b0 > [<c10b351f>] ? do_last.clone.32+0x34f/0x5a0 > [<c10b3af3>] ? do_filp_open+0x383/0x550 > [<c10b1e58>] ? getname+0x28/0xf0 > [<c10a70c8>] ? do_sys_open+0x58/0x110 > [<c10a5d09>] ? filp_close+0x49/0x70 > [<c10a71ac>] ? sys_open+0x2c/0x40 > [<c1002d10>] ? sysenter_do_call+0x12/0x26 > [<c1320000>] ? timer_cpu_notify+0x1b4/0x233 > Code: 83 78 18 63 7f b6 8d b6 00 00 00 00 8d 73 04 8d 6b 08 89 f0 e8 f3 10 00 00 > 8b 43 0c 8d 54 24 04 89 44 24 08 89 53 0c 89 6c 24 04 <89> 10 8b 04 24 ba ff ff > ff ff 89 44 24 0c 89 d0 87 03 83 f8 01 > EIP: [<c13229ef>] __mutex_lock_slowpath+0x9f/0x170 SS:ESP 0068:f4641dd4 > CR2: 0000000000000000 > ---[ end trace 5ac4e44ad0dc7959 ]--- > note: X[1725] exited with preempt_count 2 > BUG: scheduling while atomic: X/1725/0x10000003 > Modules linked in: i915 drm_kms_helper drm fb fbdev cfbcopyarea video backlight > output cfbimgblt cfbfillrect xt_state iptable_filter ipt_MASQUERADE iptable_nat > nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 saa7134_alsa tda10048 > saa7134_dvb videobuf_dvb dvb_core mt20xx tea5767 tda9887 msp3400 gspca_zc3xx > gspca_main tda18271 tda8290 ir_lirc_codec tuner lirc_dev bttv i2c_algo_bit > btcx_risc snd_bt87x ir_common uhci_hcd ir_core saa7134 v4l2_common videodev > v4l1_compat ehci_hcd videobuf_dma_sg videobuf_core tveeprom evdev [last > unloaded: floppy] > Pid: 1725, comm: X Tainted: G D 2.6.37-rc5+ #476 > Call Trace: > [<c1321f5d>] ? schedule+0x56d/0x8a0 > [<c1038656>] ? walk_system_ram_range+0xb6/0x1b0 > [<c10230d1>] ? free_memtype+0x151/0x1d0 > [<c10230d1>] ? free_memtype+0x151/0x1d0 > [<c1038766>] ? page_is_ram+0x16/0x30 > [<c1037560>] ? __is_ram+0x0/0x10 > [<c10228c3>] ? pat_pagerange_is_ram+0x73/0xa0 > [<c102cb43>] ? __cond_resched+0x13/0x30 > [<c1322340>] ? _cond_resched+0x20/0x30 > [<c10901b9>] ? unmap_vmas+0x659/0x7f0 > [<c11533ce>] ? vsnprintf+0x2ce/0x390 > [<c10963ea>] ? exit_mmap+0xca/0x180 > [<c102fa1e>] ? mmput+0x1e/0xa0 > [<c10339cc>] ? exit_mm+0xec/0x120 > [<c1067c62>] ? acct_collect+0x82/0x160 > [<c103525e>] ? do_exit+0x55e/0x6d0 > [<c1006554>] ? oops_end+0x84/0xc0 > [<c101fc40>] ? no_context+0xc0/0x190 > [<c101fe5f>] ? bad_area_nosemaphore+0xf/0x20 > [<c102027e>] ? do_page_fault+0x25e/0x400 > [<c102c2c9>] ? load_balance+0x99/0x670 > [<c1009bf4>] ? __switch_to_xtra+0xf4/0x120 > [<c1001cca>] ? __switch_to+0x1ba/0x1e0 > [<c1020020>] ? do_page_fault+0x0/0x400 > [<c132484e>] ? error_code+0x5a/0x60 > [<c1020020>] ? do_page_fault+0x0/0x400 > [<c13229ef>] ? __mutex_lock_slowpath+0x9f/0x170 > [<c13228a6>] ? mutex_lock+0x16/0x30 > [<f8841b6c>] ? bttv_open+0xac/0x280 [bttv] > [<c10aabb2>] ? cdev_get+0x52/0x90 > [<c10aabf7>] ? exact_lock+0x7/0x10 > [<f87095a7>] ? v4l2_open+0xb7/0xd0 [videodev] > [<c10ab2ea>] ? chrdev_open+0xda/0x1b0 > [<c10a5f25>] ? __dentry_open+0xd5/0x280 > [<c10a7068>] ? nameidata_to_filp+0x68/0x70 > [<c10ab210>] ? chrdev_open+0x0/0x1b0 > [<c10b351f>] ? do_last.clone.32+0x34f/0x5a0 > [<c10b3af3>] ? do_filp_open+0x383/0x550 > [<c10b1e58>] ? getname+0x28/0xf0 > [<c10a70c8>] ? do_sys_open+0x58/0x110 > [<c10a5d09>] ? filp_close+0x49/0x70 > [<c10a71ac>] ? sys_open+0x2c/0x40 > [<c1002d10>] ? sysenter_do_call+0x12/0x26 > [<c1320000>] ? timer_cpu_notify+0x1b4/0x233 > BUG: scheduling while atomic: X/1725/0x10000003 > Modules linked in: i915 drm_kms_helper drm fb fbdev cfbcopyarea video backlight > output cfbimgblt cfbfillrect xt_state iptable_filter ipt_MASQUERADE iptable_nat > nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 saa7134_alsa tda10048 > saa7134_dvb videobuf_dvb dvb_core mt20xx tea5767 tda9887 msp3400 gspca_zc3xx > gspca_main tda18271 tda8290 ir_lirc_codec tuner lirc_dev bttv i2c_algo_bit > btcx_risc snd_bt87x ir_common uhci_hcd ir_core saa7134 v4l2_common videodev > v4l1_compat ehci_hcd videobuf_dma_sg videobuf_core tveeprom evdev [last > unloaded: floppy] > Pid: 1725, comm: X Tainted: G D 2.6.37-rc5+ #476 > Call Trace: > [<c1321f5d>] ? schedule+0x56d/0x8a0 > [<c10b83f0>] ? d_kill+0x40/0x50 > [<c10b89aa>] ? dput+0x5a/0x100 > [<c10a918f>] ? fput+0x12f/0x200 > [<c102cb43>] ? __cond_resched+0x13/0x30 > [<c1322340>] ? _cond_resched+0x20/0x30 > [<c1034bef>] ? put_files_struct+0x7f/0xd0 > [<c1035271>] ? do_exit+0x571/0x6d0 > [<c1006554>] ? oops_end+0x84/0xc0 > [<c101fc40>] ? no_context+0xc0/0x190 > [<c101fe5f>] ? bad_area_nosemaphore+0xf/0x20 > [<c102027e>] ? do_page_fault+0x25e/0x400 > [<c102c2c9>] ? load_balance+0x99/0x670 > [<c1009bf4>] ? __switch_to_xtra+0xf4/0x120 > [<c1001cca>] ? __switch_to+0x1ba/0x1e0 > [<c1020020>] ? do_page_fault+0x0/0x400 > [<c132484e>] ? error_code+0x5a/0x60 > [<c1020020>] ? do_page_fault+0x0/0x400 > [<c13229ef>] ? __mutex_lock_slowpath+0x9f/0x170 > [<c13228a6>] ? mutex_lock+0x16/0x30 > [<f8841b6c>] ? bttv_open+0xac/0x280 [bttv] > [<c10aabb2>] ? cdev_get+0x52/0x90 > [<c10aabf7>] ? exact_lock+0x7/0x10 > [<f87095a7>] ? v4l2_open+0xb7/0xd0 [videodev] > [<c10ab2ea>] ? chrdev_open+0xda/0x1b0 > [<c10a5f25>] ? __dentry_open+0xd5/0x280 > [<c10a7068>] ? nameidata_to_filp+0x68/0x70 > [<c10ab210>] ? chrdev_open+0x0/0x1b0 > [<c10b351f>] ? do_last.clone.32+0x34f/0x5a0 > [<c10b3af3>] ? do_filp_open+0x383/0x550 > [<c10b1e58>] ? getname+0x28/0xf0 > [<c10a70c8>] ? do_sys_open+0x58/0x110 > [<c10a5d09>] ? filp_close+0x49/0x70 > [<c10a71ac>] ? sys_open+0x2c/0x40 > [<c1002d10>] ? sysenter_do_call+0x12/0x26 > [<c1320000>] ? timer_cpu_notify+0x1b4/0x233 > Could you try following patch? --- linux-2.6.orig/drivers/media/video/bt8xx/bttv-driver.c 2010-11-27 11:21:30.000000000 +0800 +++ linux-2.6/drivers/media/video/bt8xx/bttv-driver.c 2010-12-12 16:31:39.633333338 +0800 @@ -3291,6 +3291,8 @@ static int bttv_open(struct file *file) fh = kmalloc(sizeof(*fh), GFP_KERNEL); if (unlikely(!fh)) return -ENOMEM; + + mutex_init(&fh->cap.vb_lock); file->private_data = fh; /* -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
