* 2.6.26-00000-g8be1a6d - WARNING: at drivers/base/power/main.c:82 @ 2008-07-28 11:33 Roberto Oppedisano 2008-07-30 8:16 ` Andrew Morton 0 siblings, 1 reply; 4+ messages in thread From: Roberto Oppedisano @ 2008-07-28 11:33 UTC (permalink / raw) To: linux-kernel More info on request. Kind regards R. [29429.039959] ------------[ cut here ]------------ [29429.039959] WARNING: at drivers/base/power/main.c:82 device_pm_add+0x4d/0xb1() [29429.039959] Modules linked in: tun radeon drm rfcomm l2cap usblp ipv6 cpufreq_ondemand cpufreq_stats cpufreq_userspace cpufreq_powersave ipt_recent xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack iptable_filter ip_tables x_tables vfat fat fuse acpi_cpufreq freq_table usbserial microcode snd_intel8x0m pcmcia snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc yenta_socket rsrc_nonstatic ipw2200 pcmcia_core hci_usb i2c_i801 bluetooth video output battery ac button evdev usbhid ohci1394 8139cp uhci_hcd ehci_hcd ieee1394 usbcore sg sr_mod cdrom thermal processor fan [29429.039959] Pid: 10544, comm: s2ram Tainted: G W 2.6.26-00000-g8be1a6d #1 [29429.039959] [<c011b733>] warn_on_slowpath+0x40/0x63 [29429.039959] [<c01e93b7>] sprintf+0x1d/0x20 [29429.039959] [<c011bfc9>] vprintk+0x1cd/0x274 [29429.039959] [<c011ba65>] try_acquire_console_sem+0xa/0x2a [29429.039959] [<c019e631>] sysfs_find_dirent+0x13/0x23 [29429.039959] [<c019e107>] sysfs_add_file_mode+0x4c/0x6a [29429.039959] [<c019f8cd>] internal_create_group+0xda/0x139 [29429.039959] [<c011c084>] printk+0x14/0x18 [29429.039959] [<c023ee00>] device_pm_add+0x4d/0xb1 [29429.039959] [<c023aacb>] device_add+0x340/0x4ad [29429.039959] [<f887599e>] usb_create_ep_files+0x1ed/0x26b [usbcore] [29429.039959] [<c019d850>] sysfs_hash_and_remove+0x44/0x50 [29429.039959] [<f887533f>] usb_create_sysfs_intf_files+0x5a/0x72 [usbcore] [29429.039959] [<f887272c>] usb_set_interface+0x137/0x140 [usbcore] [29429.039959] [<f8871923>] usb_disable_interface+0x1e/0x2f [usbcore] [29429.039959] [<f88737e6>] usb_unbind_interface+0x46/0x62 [usbcore] [29429.039959] [<c023bf5d>] __device_release_driver+0x58/0x76 [29429.039959] [<c023bf93>] device_release_driver+0x18/0x21 [29429.039959] [<f887323f>] usb_driver_release_interface+0x3c/0x76 [usbcore] [29429.039959] [<f88b37b6>] hci_usb_disconnect+0x35/0x62 [hci_usb] [29429.039959] [<f88737d6>] usb_unbind_interface+0x36/0x62 [usbcore] [29429.039959] [<c023bf5d>] __device_release_driver+0x58/0x76 [29429.039959] [<c023bf93>] device_release_driver+0x18/0x21 [29429.039959] [<f887323f>] usb_driver_release_interface+0x3c/0x76 [usbcore] [29429.039959] [<f8873292>] usb_rebind_intf+0x19/0x4e [usbcore] [29429.039959] [<f887332d>] do_unbind_rebind+0x4d/0x5a [usbcore] [29429.039959] [<f887342a>] usb_external_resume_device+0xf0/0xf6 [usbcore] [29429.039959] [<c023ea2c>] device_resume+0x85/0x2f4 [29429.039959] [<c01391c9>] suspend_devices_and_enter+0xd5/0x10d [29429.039959] [<c0139312>] enter_state+0xcf/0x11c [29429.039959] [<c01393ec>] state_store+0x8d/0xa1 [29429.039959] [<c013935f>] state_store+0x0/0xa1 [29429.039959] [<c01e58af>] kobj_attr_store+0x18/0x1c [29429.039959] [<c019de6f>] sysfs_write_file+0xa4/0xd8 [29429.039959] [<c019ddcb>] sysfs_write_file+0x0/0xd8 [29429.039959] [<c016816a>] vfs_write+0x83/0xf6 [29429.039959] [<c0168597>] sys_write+0x3c/0x63 [29429.039959] [<c01038da>] syscall_call+0x7/0xb [29429.039959] ======================= [29429.039959] ---[ end trace fa351609edb352dc ]--- ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 2.6.26-00000-g8be1a6d - WARNING: at drivers/base/power/main.c:82 2008-07-28 11:33 2.6.26-00000-g8be1a6d - WARNING: at drivers/base/power/main.c:82 Roberto Oppedisano @ 2008-07-30 8:16 ` Andrew Morton 2008-07-30 8:48 ` Roberto Oppedisano 2008-07-30 14:24 ` Alan Stern 0 siblings, 2 replies; 4+ messages in thread From: Andrew Morton @ 2008-07-30 8:16 UTC (permalink / raw) To: Roberto Oppedisano; +Cc: linux-kernel, linux-usb On Mon, 28 Jul 2008 13:33:21 +0200 Roberto Oppedisano <roppedisano@infracomspa.it> wrote: > More info on request. > Let's cc linux-usb, as that appears to be the subsystem which triggered this: int device_pm_add(struct device *dev) { int error; pr_debug("PM: Adding info for %s:%s\n", dev->bus ? dev->bus->name : "No Bus", kobject_name(&dev->kobj)); mutex_lock(&dpm_list_mtx); if (dev->parent) { if (dev->parent->power.status >= DPM_SUSPENDING) { dev_warn(dev, "parent %s is sleeping, will not add\n", dev->parent->bus_id); WARN_ON(true); } WARN_ON. Also, I assume that your kernel did print that "parent %s is sleeping" message, but you trimmed it off. That would probably be useful information. Thanks. > > [29429.039959] ------------[ cut here ]------------ > [29429.039959] WARNING: at drivers/base/power/main.c:82 > device_pm_add+0x4d/0xb1() > [29429.039959] Modules linked in: tun radeon drm rfcomm l2cap usblp ipv6 > cpufreq_ondemand cpufreq_stats cpufreq_userspace cpufreq_powersave > ipt_recent xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack > iptable_filter ip_tables x_tables vfat fat fuse acpi_cpufreq freq_table > usbserial microcode snd_intel8x0m pcmcia snd_intel8x0 snd_ac97_codec > ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_oss snd_seq_midi > snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd > soundcore snd_page_alloc yenta_socket rsrc_nonstatic ipw2200 pcmcia_core > hci_usb i2c_i801 bluetooth video output battery ac button evdev usbhid > ohci1394 8139cp uhci_hcd ehci_hcd ieee1394 usbcore sg sr_mod cdrom > thermal processor fan > [29429.039959] Pid: 10544, comm: s2ram Tainted: G W > 2.6.26-00000-g8be1a6d #1 > [29429.039959] [<c011b733>] warn_on_slowpath+0x40/0x63 > [29429.039959] [<c01e93b7>] sprintf+0x1d/0x20 > [29429.039959] [<c011bfc9>] vprintk+0x1cd/0x274 > [29429.039959] [<c011ba65>] try_acquire_console_sem+0xa/0x2a > [29429.039959] [<c019e631>] sysfs_find_dirent+0x13/0x23 > [29429.039959] [<c019e107>] sysfs_add_file_mode+0x4c/0x6a > [29429.039959] [<c019f8cd>] internal_create_group+0xda/0x139 > [29429.039959] [<c011c084>] printk+0x14/0x18 > [29429.039959] [<c023ee00>] device_pm_add+0x4d/0xb1 > [29429.039959] [<c023aacb>] device_add+0x340/0x4ad > [29429.039959] [<f887599e>] usb_create_ep_files+0x1ed/0x26b [usbcore] > [29429.039959] [<c019d850>] sysfs_hash_and_remove+0x44/0x50 > [29429.039959] [<f887533f>] usb_create_sysfs_intf_files+0x5a/0x72 > [usbcore] > [29429.039959] [<f887272c>] usb_set_interface+0x137/0x140 [usbcore] > [29429.039959] [<f8871923>] usb_disable_interface+0x1e/0x2f [usbcore] > [29429.039959] [<f88737e6>] usb_unbind_interface+0x46/0x62 [usbcore] > [29429.039959] [<c023bf5d>] __device_release_driver+0x58/0x76 > [29429.039959] [<c023bf93>] device_release_driver+0x18/0x21 > [29429.039959] [<f887323f>] usb_driver_release_interface+0x3c/0x76 > [usbcore] > [29429.039959] [<f88b37b6>] hci_usb_disconnect+0x35/0x62 [hci_usb] > [29429.039959] [<f88737d6>] usb_unbind_interface+0x36/0x62 [usbcore] > [29429.039959] [<c023bf5d>] __device_release_driver+0x58/0x76 > [29429.039959] [<c023bf93>] device_release_driver+0x18/0x21 > [29429.039959] [<f887323f>] usb_driver_release_interface+0x3c/0x76 > [usbcore] > [29429.039959] [<f8873292>] usb_rebind_intf+0x19/0x4e [usbcore] > [29429.039959] [<f887332d>] do_unbind_rebind+0x4d/0x5a [usbcore] > [29429.039959] [<f887342a>] usb_external_resume_device+0xf0/0xf6 > [usbcore] > [29429.039959] [<c023ea2c>] device_resume+0x85/0x2f4 > [29429.039959] [<c01391c9>] suspend_devices_and_enter+0xd5/0x10d > [29429.039959] [<c0139312>] enter_state+0xcf/0x11c > [29429.039959] [<c01393ec>] state_store+0x8d/0xa1 > [29429.039959] [<c013935f>] state_store+0x0/0xa1 > [29429.039959] [<c01e58af>] kobj_attr_store+0x18/0x1c > [29429.039959] [<c019de6f>] sysfs_write_file+0xa4/0xd8 > [29429.039959] [<c019ddcb>] sysfs_write_file+0x0/0xd8 > [29429.039959] [<c016816a>] vfs_write+0x83/0xf6 > [29429.039959] [<c0168597>] sys_write+0x3c/0x63 > [29429.039959] [<c01038da>] syscall_call+0x7/0xb > [29429.039959] ======================= > [29429.039959] ---[ end trace fa351609edb352dc ]--- ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 2.6.26-00000-g8be1a6d - WARNING: at drivers/base/power/main.c:82 2008-07-30 8:16 ` Andrew Morton @ 2008-07-30 8:48 ` Roberto Oppedisano 2008-07-30 14:24 ` Alan Stern 1 sibling, 0 replies; 4+ messages in thread From: Roberto Oppedisano @ 2008-07-30 8:48 UTC (permalink / raw) To: Andrew Morton; +Cc: linux-kernel, linux-usb [-- Attachment #1: Type: text/plain, Size: 4811 bytes --] On Wed, 30 Jul 2008 01:16:16 -0700 Andrew Morton wrote: > On Mon, 28 Jul 2008 13:33:21 +0200 Roberto Oppedisano <roppedisano@infracomspa.it> wrote: > > Let's cc linux-usb, as that appears to be the subsystem which triggered > this: > > int device_pm_add(struct device *dev) > { > int error; > > pr_debug("PM: Adding info for %s:%s\n", > dev->bus ? dev->bus->name : "No Bus", > kobject_name(&dev->kobj)); > mutex_lock(&dpm_list_mtx); > if (dev->parent) { > if (dev->parent->power.status >= DPM_SUSPENDING) { > dev_warn(dev, "parent %s is sleeping, will not add\n", > dev->parent->bus_id); > WARN_ON(true); > } > > WARN_ON. > > Also, I assume that your kernel did print that "parent %s is sleeping" > message, but you trimmed it off. That would probably be useful > information. > yep, here it is; Jul 28 13:18:59 poppero1 kernel: [29429.039959] usb_endpoint usbdev4.2_ep03: parent 4-2:1.1 is sleeping, will not add BTW, looking at the syslog I realize that 5 traces were connected to the same event, so I'm going to attach them all, in case they're useful. Thanks, R. > Thanks. > > >> [29429.039959] ------------[ cut here ]------------ >> [29429.039959] WARNING: at drivers/base/power/main.c:82 >> device_pm_add+0x4d/0xb1() >> [29429.039959] Modules linked in: tun radeon drm rfcomm l2cap usblp ipv6 >> cpufreq_ondemand cpufreq_stats cpufreq_userspace cpufreq_powersave >> ipt_recent xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack >> iptable_filter ip_tables x_tables vfat fat fuse acpi_cpufreq freq_table >> usbserial microcode snd_intel8x0m pcmcia snd_intel8x0 snd_ac97_codec >> ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_oss snd_seq_midi >> snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd >> soundcore snd_page_alloc yenta_socket rsrc_nonstatic ipw2200 pcmcia_core >> hci_usb i2c_i801 bluetooth video output battery ac button evdev usbhid >> ohci1394 8139cp uhci_hcd ehci_hcd ieee1394 usbcore sg sr_mod cdrom >> thermal processor fan >> [29429.039959] Pid: 10544, comm: s2ram Tainted: G W >> 2.6.26-00000-g8be1a6d #1 >> [29429.039959] [<c011b733>] warn_on_slowpath+0x40/0x63 >> [29429.039959] [<c01e93b7>] sprintf+0x1d/0x20 >> [29429.039959] [<c011bfc9>] vprintk+0x1cd/0x274 >> [29429.039959] [<c011ba65>] try_acquire_console_sem+0xa/0x2a >> [29429.039959] [<c019e631>] sysfs_find_dirent+0x13/0x23 >> [29429.039959] [<c019e107>] sysfs_add_file_mode+0x4c/0x6a >> [29429.039959] [<c019f8cd>] internal_create_group+0xda/0x139 >> [29429.039959] [<c011c084>] printk+0x14/0x18 >> [29429.039959] [<c023ee00>] device_pm_add+0x4d/0xb1 >> [29429.039959] [<c023aacb>] device_add+0x340/0x4ad >> [29429.039959] [<f887599e>] usb_create_ep_files+0x1ed/0x26b [usbcore] >> [29429.039959] [<c019d850>] sysfs_hash_and_remove+0x44/0x50 >> [29429.039959] [<f887533f>] usb_create_sysfs_intf_files+0x5a/0x72 >> [usbcore] >> [29429.039959] [<f887272c>] usb_set_interface+0x137/0x140 [usbcore] >> [29429.039959] [<f8871923>] usb_disable_interface+0x1e/0x2f [usbcore] >> [29429.039959] [<f88737e6>] usb_unbind_interface+0x46/0x62 [usbcore] >> [29429.039959] [<c023bf5d>] __device_release_driver+0x58/0x76 >> [29429.039959] [<c023bf93>] device_release_driver+0x18/0x21 >> [29429.039959] [<f887323f>] usb_driver_release_interface+0x3c/0x76 >> [usbcore] >> [29429.039959] [<f88b37b6>] hci_usb_disconnect+0x35/0x62 [hci_usb] >> [29429.039959] [<f88737d6>] usb_unbind_interface+0x36/0x62 [usbcore] >> [29429.039959] [<c023bf5d>] __device_release_driver+0x58/0x76 >> [29429.039959] [<c023bf93>] device_release_driver+0x18/0x21 >> [29429.039959] [<f887323f>] usb_driver_release_interface+0x3c/0x76 >> [usbcore] >> [29429.039959] [<f8873292>] usb_rebind_intf+0x19/0x4e [usbcore] >> [29429.039959] [<f887332d>] do_unbind_rebind+0x4d/0x5a [usbcore] >> [29429.039959] [<f887342a>] usb_external_resume_device+0xf0/0xf6 >> [usbcore] >> [29429.039959] [<c023ea2c>] device_resume+0x85/0x2f4 >> [29429.039959] [<c01391c9>] suspend_devices_and_enter+0xd5/0x10d >> [29429.039959] [<c0139312>] enter_state+0xcf/0x11c >> [29429.039959] [<c01393ec>] state_store+0x8d/0xa1 >> [29429.039959] [<c013935f>] state_store+0x0/0xa1 >> [29429.039959] [<c01e58af>] kobj_attr_store+0x18/0x1c >> [29429.039959] [<c019de6f>] sysfs_write_file+0xa4/0xd8 >> [29429.039959] [<c019ddcb>] sysfs_write_file+0x0/0xd8 >> [29429.039959] [<c016816a>] vfs_write+0x83/0xf6 >> [29429.039959] [<c0168597>] sys_write+0x3c/0x63 >> [29429.039959] [<c01038da>] syscall_call+0x7/0xb >> [29429.039959] ======================= >> [29429.039959] ---[ end trace fa351609edb352dc ]--- >> > > -- Roberto Oppedisano [RO2480-RIPE] Infracom Network Application OSS and LIR Services Tel. +39 045 8271518 Fax +39 045 8271499 Cell. +39 348 7419534 [-- Attachment #2: trace-fa351609edb352dc.txt.gz --] [-- Type: application/x-gzip, Size: 2015 bytes --] ^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 2.6.26-00000-g8be1a6d - WARNING: at drivers/base/power/main.c:82 2008-07-30 8:16 ` Andrew Morton 2008-07-30 8:48 ` Roberto Oppedisano @ 2008-07-30 14:24 ` Alan Stern 1 sibling, 0 replies; 4+ messages in thread From: Alan Stern @ 2008-07-30 14:24 UTC (permalink / raw) To: Andrew Morton; +Cc: Roberto Oppedisano, linux-kernel, linux-usb On Wed, 30 Jul 2008, Andrew Morton wrote: > On Mon, 28 Jul 2008 13:33:21 +0200 Roberto Oppedisano <roppedisano@infracomspa.it> wrote: > > > More info on request. > > > > Let's cc linux-usb, as that appears to be the subsystem which triggered > this: > > int device_pm_add(struct device *dev) > { > int error; > > pr_debug("PM: Adding info for %s:%s\n", > dev->bus ? dev->bus->name : "No Bus", > kobject_name(&dev->kobj)); > mutex_lock(&dpm_list_mtx); > if (dev->parent) { > if (dev->parent->power.status >= DPM_SUSPENDING) { > dev_warn(dev, "parent %s is sleeping, will not add\n", > dev->parent->bus_id); > WARN_ON(true); > } > > WARN_ON. > > Also, I assume that your kernel did print that "parent %s is sleeping" > message, but you trimmed it off. That would probably be useful > information. Hmmm... I don't suppose anyone ever thought to indicate which kernel version produced this warning? If you look at the offending source code in 2.6.27-rc1, you'll find a comment that explains the whole thing. From do_unbind_rebind() -- admittedly not easy to single out from the rather lengthy stack trace -- in drivers/usb/core/driver.c: /* FIXME: The next line is needed because we are going to probe * the interface, but as far as the PM core is concerned the * interface is still suspended. The problem wouldn't exist * if we could rebind the interface during the interface's own * resume() call, but at the time the usb_device isn't locked! * * The real solution will be to carry this out during the device's * complete() callback. Until that is implemented, we have to * use this hack. */ // intf->dev.power.sleeping = 0; The last line had to be commented out because the power.sleeping field was removed during the transition from 2.6.26 to 2.6.27-rc1. The code that will make this work properly, with no warnings, hasn't been written yet; I was waiting for 2.6.27-rc1 to appear so there'd be a more-or-less stable base to work from. For the time being you can simply ignore the WARNING; it is harmless. Alan Stern ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2008-07-30 14:24 UTC | newest] Thread overview: 4+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2008-07-28 11:33 2.6.26-00000-g8be1a6d - WARNING: at drivers/base/power/main.c:82 Roberto Oppedisano 2008-07-30 8:16 ` Andrew Morton 2008-07-30 8:48 ` Roberto Oppedisano 2008-07-30 14:24 ` Alan Stern
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