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Message-ID: <20100810223215.GA1609@arch.tripp.de> Date: Wed, 11 Aug 2010 00:32:15 +0200 From: Markus Trippelsdorf <markus@...ppelsdorf.de> To: Heinz Diehl <htd@...tha.org> Cc: linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org, linux-input@...r.kernel.org, Jiri Kosina <jkosina@...e.cz> Subject: Re: [BUG] object: is not initialized, yet kobject_put() is being called On Tue, Aug 10, 2010 at 11:09:41PM +0200, Heinz Diehl wrote: > Hi, > > I'm getting this in my logs with the latest -git7/8/9 kernels. Thw apcups > is not defective, it works flawlessly with 2.6.34.X. > > Aug 10 23:01:44 liesel apcupsd[7687]: apcupsd FATAL ERROR in linux-usb.c > at line 609 Cannot find UPS device -- For a link to detailed USB trouble > shooting information, please see <http://www.apcupsd.com/support.html>. > Aug 10 23:01:44 liesel apcupsd[7687]: apcupsd error shutdown completed > Aug 10 23:04:40 liesel kernel: ------------[ cut here ]------------ > > Aug 10 23:04:40 liesel kernel: WARNING: at lib/kobject.c:595 kobject_put+0x2f/0x50() > Aug 10 23:04:40 liesel kernel: Hardware name: GA-MA770-UD3 Aug 10 23:04:40 liesel kernel: kobject: '(null)' (ffff88022c651898): is > not initialized, yet kobject_put() is being called. Aug 10 23:04:40 liesel kernel: Modules linked in: xt_pkttype ipt_LOG > xt_limit aes_x86_64 aes_generic af_packet it87 hwmon_vid binfmt_misc snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device cpufreq_conservative > cpufreq_ondemand cpufreq_userspace cpufreq_powersave powernow_k8 freq_table mperf xt_NOTRACK xt_state iptable_raw nf_conntrack_netbios_ns > nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip6_tables ipt_REJECT iptable_filter ip_tables tcp_vegas uhci_hcd rt73usb rt2x00usb rt2x00lib > r8169 led_class mii mac80211 snd_hda_codec_realtek ppdev parport_pc cfg80211 parport snd_hda_intel snd_hda_codec snd_pcm snd_timer snd > soundcore sr_mod k10temp hwmon i2c_piix4 pcspkr cdrom button rfkill joydev snd_page_alloc i2c_core sg xts usbhid sd_mod ohci_hcd ehci_hcd rtc_cmos > rtc_core pata_atiixp rtc_lib usbcore ahci libahci hmac dm_snapshot dm_crypt dm_mod gf128mul sha512_generic sha256_generic twofish_x86_64 > twofish_common serpent cbc tgr192 loop ecb arc4 fuse edd ide_pci_generic amd74xx ide_core fan pata_amd sata_nv libata scsi > Aug 10 23:04:40 liesel kernel: Pid: 1115, comm: khubd Not tainted 2.6.35-git9 #1 > Aug 10 23:04:40 liesel kernel: Call Trace: > Aug 10 23:04:40 liesel kernel: [<ffffffff812a620f>] ? kobject_put+0x2f/0x50 > Aug 10 23:04:40 liesel kernel: [<ffffffff812a620f>] ? kobject_put+0x2f/0x50 > Aug 10 23:04:40 liesel kernel: [<ffffffff810414f1>] ? warn_slowpath_common+0x81/0xe0 > Aug 10 23:04:40 liesel kernel: [<ffffffff81041605>] ? warn_slowpath_fmt+0x45/0x50 > Aug 10 23:04:40 liesel kernel: [<ffffffff812a620f>] ? kobject_put+0x2f/0x50 > Aug 10 23:04:40 liesel kernel: [<ffffffffa00bea3e>] ? usbhid_disconnect+0x1e/0x40 [usbhid] > Aug 10 23:04:40 liesel kernel: [<ffffffffa01a7525>] ? usb_unbind_interface+0xc5/0x120 [usbcore] > Aug 10 23:04:40 liesel kernel: [<ffffffff8133ffc8>] ? __device_release_driver+0x78/0xf0 > Aug 10 23:04:40 liesel kernel: [<ffffffff81340125>] ? device_release_driver+0x25/0x40 > Aug 10 23:04:40 liesel kernel: [<ffffffff8133f4a2>] ? bus_remove_device+0xa2/0xf0 > Aug 10 23:04:40 liesel kernel: [<ffffffff8133d7da>] ? device_del+0x12a/0x1d0 > Aug 10 23:04:40 liesel kernel: [<ffffffffa01a4b8d>] ? usb_disable_device+0x8d/0x110 [usbcore] > Aug 10 23:04:40 liesel kernel: [<ffffffffa019f6bb>] ? usb_disconnect+0x7b/0x120 [usbcore] > Aug 10 23:04:40 liesel kernel: [<ffffffffa01a03c2>] ? hub_thread+0x322/0x11d0 [usbcore] > Aug 10 23:04:40 liesel kernel: [<ffffffff81034a77>] ? set_next_entity+0x37/0x80 > Aug 10 23:04:40 liesel kernel: [<ffffffff8105c330>] ? autoremove_wake_function+0x0/0x30 > Aug 10 23:04:40 liesel kernel: [<ffffffffa01a00a0>] ? hub_thread+0x0/0x11d0 [usbcore] > Aug 10 23:04:40 liesel kernel: [<ffffffffa01a00a0>] ? hub_thread+0x0/0x11d0 [usbcore] > Aug 10 23:04:40 liesel kernel: [<ffffffff8105be56>] ? kthread+0x96/0xb0 > Aug 10 23:04:40 liesel kernel: [<ffffffff81003b14>] ? kernel_thread_helper+0x4/0x10 > Aug 10 23:04:40 liesel kernel: [<ffffffff8105bdc0>] ? kthread+0x0/0xb0 > Aug 10 23:04:40 liesel kernel: [<ffffffff81003b10>] ? kernel_thread_helper+0x0/0x10 > Aug 10 23:04:40 liesel kernel: ---[ end trace 808e80ff1e6d651e ]--- I'm seeing something similar today: hub 3-0:1.0: port 1 disabled by hub (EMI?), re-enabling... usb 3-1: USB disconnect, address 2 ------------[ cut here ]------------ WARNING: at lib/kobject.c:595 kobject_put+0x37/0x4b() Hardware name: System Product Name kobject: '(null)' (ffff88011e9cd898): is not initialized, yet kobject_put() is being called. Pid: 310, comm: khubd Not tainted 2.6.35-06113-gf6cec0a-dirty #4 Call Trace: [<ffffffff8105e7f7>] warn_slowpath_common+0x80/0x98 [<ffffffff8105e8a2>] warn_slowpath_fmt+0x46/0x48 [<ffffffff8118fbad>] kobject_put+0x37/0x4b [<ffffffff812aa88d>] put_device+0x17/0x19 [<ffffffff8132fef1>] hid_destroy_device+0x41/0x45 [<ffffffff81335e5f>] usbhid_disconnect+0x3e/0x4b [<ffffffff812fbd0d>] usb_unbind_interface+0x4c/0xd3 [<ffffffff812ad746>] __device_release_driver+0x6c/0xb5 [<ffffffff812adc33>] device_release_driver+0x23/0x30 [<ffffffff812ace3b>] bus_remove_device+0x89/0x99 [<ffffffff812aaec6>] device_del+0x12d/0x17f [<ffffffff812facc4>] usb_disable_device+0x86/0xfd [<ffffffff812f446a>] usb_disconnect+0x8e/0xf6 [<ffffffff812f62fd>] hub_thread+0x3eb/0xcb5 [<ffffffff8140170b>] ? _raw_spin_unlock_irq+0x16/0x31 [<ffffffff81077ea3>] ? autoremove_wake_function+0x0/0x39 [<ffffffff812f5f12>] ? hub_thread+0x0/0xcb5 [<ffffffff8107750e>] kthread+0x82/0x8a [<ffffffff8102f794>] kernel_thread_helper+0x4/0x10 [<ffffffff8107748c>] ? kthread+0x0/0x8a [<ffffffff8102f790>] ? kernel_thread_helper+0x0/0x10 ---[ end trace 5707e7a0642da347 ]--- ------------[ cut here ]------------ WARNING: at lib/kobject.c:595 kobject_put+0x37/0x4b() Hardware name: System Product Name kobject: '(null)' (ffff88011e9fd898): is not initialized, yet kobject_put() is being called. Pid: 310, comm: khubd Tainted: G W 2.6.35-06113-gf6cec0a-dirty #4 Call Trace: [<ffffffff8105e7f7>] warn_slowpath_common+0x80/0x98 [<ffffffff8105e8a2>] warn_slowpath_fmt+0x46/0x48 [<ffffffff8118fbad>] kobject_put+0x37/0x4b [<ffffffff812aa88d>] put_device+0x17/0x19 [<ffffffff8132fef1>] hid_destroy_device+0x41/0x45 [<ffffffff81335e5f>] usbhid_disconnect+0x3e/0x4b [<ffffffff812fbd0d>] usb_unbind_interface+0x4c/0xd3 [<ffffffff812ad746>] __device_release_driver+0x6c/0xb5 [<ffffffff812adc33>] device_release_driver+0x23/0x30 [<ffffffff812ace3b>] bus_remove_device+0x89/0x99 [<ffffffff812aaec6>] device_del+0x12d/0x17f [<ffffffff812facc4>] usb_disable_device+0x86/0xfd [<ffffffff812f446a>] usb_disconnect+0x8e/0xf6 [<ffffffff812f62fd>] hub_thread+0x3eb/0xcb5 [<ffffffff8140170b>] ? _raw_spin_unlock_irq+0x16/0x31 [<ffffffff81077ea3>] ? autoremove_wake_function+0x0/0x39 [<ffffffff812f5f12>] ? hub_thread+0x0/0xcb5 [<ffffffff8107750e>] kthread+0x82/0x8a [<ffffffff8102f794>] kernel_thread_helper+0x4/0x10 [<ffffffff8107748c>] ? kthread+0x0/0x8a [<ffffffff8102f790>] ? kernel_thread_helper+0x0/0x10 ---[ end trace 5707e7a0642da348 ]--- usb 3-1: new full speed USB device using ohci_hcd and address 3 input: Logitech USB Receiver as /devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.0/input/input6 generic-usb 0003:046D:C52B.0006: input,hidraw0: USB HID v1.11 Keyboard [Logitech USB Receiver] on usb-0000:00:12.0-1/input0 input: Logitech USB Receiver as /devices/pci0000:00/0000:00:12.0/usb3/3-1/3-1:1.1/input/input7 generic-usb 0003:046D:C52B.0007: input,hiddev0,hidraw5: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:12.0-1/input1 generic-usb 0003:046D:C52B.0008: hiddev0,hidraw6: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:12.0-1/input2 -- »A man who doesn't know he is in prison can never escape.« William S. 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