Re: 3.7 watchdog debugobjects warning
From: Don Zickus
Date: Tue Dec 11 2012 - 14:21:22 EST
On Tue, Dec 11, 2012 at 01:42:56PM -0500, Dave Jones wrote:
> Looks like we're doing a double-init on a timer.
>
> I had been experimenting with powertop, so that may have triggered something
> maybe suspend/resume related ?
Is this coming out of a resume then?
I am not familiar with ODEBUG, so I can't really tell what it is
complaining about.
But it seems like the watchdog is being enabled which calls hrtimer_init
to initialize a periodic event. It seems ODEBUG is complaining that isn't
a good idea for some reason.
Adding Thomas for his opinion.
Cheers,
Don
>
> (says -rc8, but it's only missing the Makefile change)
>
> [14844.560489] WARNING: at lib/debugobjects.c:261 debug_print_object+0x8c/0xb0()
> [14844.560919] Hardware name: 2356JK8
> [14844.561133] ODEBUG: init active (active state 0) object type: hrtimer hint: watchdog_timer_fn+0x0/0x190
> [14844.561689] Modules linked in: bluetooth cpufreq_stats iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack dm_crypt xfs arc4 iwldvm coretemp kvm_intel mac80211 kvm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec crc32c_intel iTCO_wdt iTCO_vendor_support snd_hwdep ghash_clmulni_intel snd_seq iwlwifi microcode snd_seq_device pcspkr i2c_i801 snd_pcm cfg80211 tpm_tis e1000e thinkpad_acpi snd_page_alloc lpc_ich snd_timer mfd_core snd soundcore tpm tpm_bios nfsd auth_rpcgss nfs_acl lockd sunrpc btrfs libcrc32c zlib_deflate i915 i2c_algo_bit drm_kms_helper drm i2c_core video
> [14844.565462] Pid: 14, comm: watchdog/0 Not tainted 3.7.0-rc8+ #4
> [14844.565818] Call Trace:
> [14844.565978] [<ffffffff810529bf>] warn_slowpath_common+0x7f/0xc0
> [14844.566342] [<ffffffff81052ab6>] warn_slowpath_fmt+0x46/0x50
> [14844.566690] [<ffffffff8134a0ec>] debug_print_object+0x8c/0xb0
> [14844.567039] [<ffffffff81104610>] ? watchdog+0x30/0x30
> [14844.567353] [<ffffffff8134a3df>] __debug_object_init+0x20f/0x3e0
> [14844.567721] [<ffffffff816a63b9>] ? __schedule+0x479/0xa00
> [14844.568055] [<ffffffff8134a5cb>] debug_object_init+0x1b/0x20
> [14844.568406] [<ffffffff81086782>] hrtimer_init+0x32/0x180
> [14844.568735] [<ffffffff811048f5>] watchdog_enable+0x85/0x200
> [14844.569078] [<ffffffff810956a1>] ? get_parent_ip+0x11/0x50
> [14844.569416] [<ffffffff8108cd2c>] smpboot_thread_fn+0x10c/0x300
> [14844.569771] [<ffffffff8108cc20>] ? __smpboot_create_thread.part.2+0xc0/0xc0
> [14844.570193] [<ffffffff81081a7d>] kthread+0xed/0x100
> [14844.570496] [<ffffffff816a5df5>] ? wait_for_common+0x135/0x180
> [14844.570850] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
> [14844.571243] [<ffffffff816b0d6c>] ret_from_fork+0x7c/0xb0
> [14844.571570] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
> [14844.571960] ---[ end trace 482f8371e46ff84f ]---
>
>
> Sidenote: At this point, the output in dmesg goes crazy. Would adding some KERN_CONT's
> have fixed this ?
>
>
>
> [14844.572807] ------------[ cut here ]------------
> [14844.573099] WARNING: at lib/debugobjects.c:261 debug_print_object+0x8c/0xb0()
> [14844.573529] Hardware name: 2356JK8
> [14844.573751] ODEBUG: init active (active state 0) object type: hrtimer hint: watchdog_timer_fn+0x0/0x190
> [14844.576953] ------------[ cut here ]------------
> [14844.576958] WARNING: at lib/debugobjects.c:261 debug_print_object+0x8c/0xb0()
> [14844.576959] Hardware name: 2356JK8
> [14844.576962] ODEBUG: init active (active state 0) object type: hrtimer hint: watchdog_timer_fn+0x0/0x190
> [14844.574316] Modules linked in: bluetooth cpufreq_stats iptable_mangle nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack dm_crypt xfs arc4 iwldvm coretemp kvm_intel mac80211 kvm snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec crc32c_intel iTCO_wdt iTCO_vendor_support snd_hwdep ghash_clmulni_intel snd_seq iwlwifi microcode snd_seq_device pcspkr i2c_i801 snd_pcm cfg80211 tpm_tis e1000e thinkpad_acpi snd_page_alloc lpc_ich snd_timer mfd_core
> [14844.576962] Modules linked in:
> [14844.576963] bluetooth
> [14844.576964] cpufreq_stats
> [14844.576964] iptable_mangle
> [14844.576965] nf_conntrack_ipv4
> [14844.576966] nf_defrag_ipv4
> [14844.576966] xt_conntrack
> [14844.576967] nf_conntrack
> [14844.576968] dm_crypt
> [14844.576968] xfs
> [14844.576969] arc4
> [14844.576969] iwldvm
> [14844.576970] coretemp
> [14844.576971] kvm_intel
> [14844.576971] mac80211
> [14844.576972] kvm
> [14844.576972] snd_hda_codec_hdmi
> [14844.576973] snd_hda_codec_realtek
> [14844.576974] snd_hda_intel
> [14844.576974] snd_hda_codec
> [14844.576975] crc32c_intel
> [14844.576975] iTCO_wdt
> [14844.576976] iTCO_vendor_support
> [14844.576977] snd_hwdep
> [14844.576977] ghash_clmulni_intel
> [14844.576978] snd_seq
> [14844.576978] iwlwifi
> [14844.576979] microcode
> [14844.576980] snd_seq_device
> [14844.576980] pcspkr
> [14844.576981] i2c_i801
> [14844.576981] snd_pcm
> [14844.576982] cfg80211
> [14844.576983] tpm_tis
> [14844.576983] e1000e
> [14844.576984] thinkpad_acpi
> [14844.576984] snd_page_alloc
> [14844.576985] lpc_ich
> [14844.576985] snd_timer
> [14844.576986] mfd_core
> [14844.576987] snd
> [14844.576987] soundcore
> [14844.576988] tpm
> [14844.576989] tpm_bios
> [14844.576989] nfsd
> [14844.576990] auth_rpcgss
> [14844.576990] nfs_acl
> [14844.576991] lockd
> [14844.576992] sunrpc
> [14844.576992] btrfs
> [14844.576993] libcrc32c
> [14844.576994] zlib_deflate
> [14844.576994] i915
> [14844.576995] i2c_algo_bit
> [14844.576996] drm_kms_helper
> [14844.576996] drm
> [14844.576997] i2c_core
> [14844.576998] video
>
> [14844.577000] Pid: 21, comm: watchdog/2 Tainted: G W 3.7.0-rc8+ #4
> [14844.577001] Call Trace:
>
> [14844.577005] [<ffffffff810529bf>] warn_slowpath_common+0x7f/0xc0
>
> [14844.577008] [<ffffffff81052ab6>] warn_slowpath_fmt+0x46/0x50
>
> [14844.577011] [<ffffffff8134a0ec>] debug_print_object+0x8c/0xb0
>
> [14844.577013] [<ffffffff81104610>] ? watchdog+0x30/0x30
>
> [14844.577015] [<ffffffff8134a3df>] __debug_object_init+0x20f/0x3e0
>
> [14844.577018] [<ffffffff816a63b9>] ? __schedule+0x479/0xa00
> [14844.577018] ------------[ cut here ]------------
>
> [14844.577021] WARNING: at lib/debugobjects.c:261 debug_print_object+0x8c/0xb0()
> [14844.577023] [<ffffffff8134a5cb>] debug_object_init+0x1b/0x20
> [14844.577023] Hardware name: 2356JK8
>
> [14844.577026] ODEBUG: init active (active state 0) object type: hrtimer hint: watchdog_timer_fn+0x0/0x190
> [14844.577028] [<ffffffff81086782>] hrtimer_init+0x32/0x180
> [14844.577029] Modules linked in:
>
> [14844.577029] bluetooth
> [14844.577031] [<ffffffff811048f5>] watchdog_enable+0x85/0x200
> [14844.577031] cpufreq_stats
>
> [14844.577032] iptable_mangle
> [14844.577034] [<ffffffff810956a1>] ? get_parent_ip+0x11/0x50
> [14844.577035] nf_conntrack_ipv4
>
> [14844.577036] nf_defrag_ipv4
> [14844.577037] [<ffffffff8108cd2c>] smpboot_thread_fn+0x10c/0x300
> [14844.577038] xt_conntrack
>
> [14844.577038] nf_conntrack
> [14844.577040] [<ffffffff8108cc20>] ? __smpboot_create_thread.part.2+0xc0/0xc0
> [14844.577040] dm_crypt
>
> [14844.577041] xfs
> [14844.577043] [<ffffffff81081a7d>] kthread+0xed/0x100
> [14844.577043] arc4
>
> [14844.577044] iwldvm
> [14844.577045] [<ffffffff816a5df5>] ? wait_for_common+0x135/0x180
> [14844.577046] coretemp
>
> [14844.577047] kvm_intel
> [14844.577048] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
> [14844.577049] mac80211
>
> [14844.577049] kvm
> [14844.577051] [<ffffffff816b0d6c>] ret_from_fork+0x7c/0xb0
> [14844.577052] snd_hda_codec_hdmi
>
> [14844.577052] snd_hda_codec_realtek
> [14844.577054] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
> [14844.577054] snd_hda_intel
> [14844.577055] ---[ end trace 482f8371e46ff850 ]---
> [14844.577055] snd_hda_codec
> [14844.577056] crc32c_intel
> [14844.577057] iTCO_wdt
> [14844.577057] iTCO_vendor_support
> [14844.577058] snd_hwdep
> [14844.577058] ghash_clmulni_intel
> [14844.577059] snd_seq
> [14844.577059] iwlwifi
> [14844.577060] microcode
> [14844.577060] snd_seq_device
> [14844.577061] pcspkr
> [14844.577062] i2c_i801
> [14844.577062] snd_pcm
> [14844.577063] cfg80211
> [14844.577063] tpm_tis
> [14844.577064] e1000e
> [14844.577064] thinkpad_acpi
> [14844.577065] snd_page_alloc
> [14844.577066] lpc_ich
> [14844.577066] snd_timer
> [14844.577067] mfd_core
> [14844.577067] snd
> [14844.577068] soundcore
> [14844.577068] tpm
> [14844.577069] tpm_bios
> [14844.577070] nfsd
> [14844.577070] auth_rpcgss
> [14844.577071] nfs_acl
> [14844.577071] lockd
> [14844.577072] sunrpc
> [14844.577072] btrfs
> [14844.577073] libcrc32c
> [14844.577074] zlib_deflate
> [14844.577074] i915
> [14844.577075] i2c_algo_bit
> [14844.577075] drm_kms_helper
> [14844.577076] drm
> [14844.577076] i2c_core
> [14844.577077] video
>
> [14844.577079] Pid: 27, comm: watchdog/3 Tainted: G W 3.7.0-rc8+ #4
> [14844.577079] Call Trace:
>
> [14844.577082] [<ffffffff810529bf>] warn_slowpath_common+0x7f/0xc0
>
> [14844.577084] [<ffffffff81052ab6>] warn_slowpath_fmt+0x46/0x50
>
> [14844.577087] [<ffffffff8134a0ec>] debug_print_object+0x8c/0xb0
>
> [14844.577089] [<ffffffff81104610>] ? watchdog+0x30/0x30
>
> [14844.577091] [<ffffffff8134a3df>] __debug_object_init+0x20f/0x3e0
>
> [14844.577093] [<ffffffff816a63b9>] ? __schedule+0x479/0xa00
>
> [14844.577095] [<ffffffff8134a5cb>] debug_object_init+0x1b/0x20
>
> [14844.577097] [<ffffffff81086782>] hrtimer_init+0x32/0x180
>
> [14844.577100] [<ffffffff811048f5>] watchdog_enable+0x85/0x200
>
> [14844.577102] [<ffffffff810956a1>] ? get_parent_ip+0x11/0x50
>
> [14844.577104] [<ffffffff8108cd2c>] smpboot_thread_fn+0x10c/0x300
>
> [14844.577106] [<ffffffff8108cc20>] ? __smpboot_create_thread.part.2+0xc0/0xc0
>
> [14844.577108] [<ffffffff81081a7d>] kthread+0xed/0x100
>
> [14844.577110] [<ffffffff816a5d0a>] ? wait_for_common+0x4a/0x180
>
> [14844.577112] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
>
> [14844.577114] [<ffffffff816b0d6c>] ret_from_fork+0x7c/0xb0
>
> [14844.577115] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
> [14844.577116] ---[ end trace 482f8371e46ff851 ]---
> [14844.599738] snd
> [14844.599856] soundcore tpm tpm_bios nfsd auth_rpcgss nfs_acl lockd sunrpc btrfs libcrc32c zlib_deflate i915 i2c_algo_bit drm_kms_helper drm i2c_core video
> [14844.600705] Pid: 15, comm: watchdog/1 Tainted: G W 3.7.0-rc8+ #4
> [14844.601082] Call Trace:
> [14844.601224] [<ffffffff810529bf>] warn_slowpath_common+0x7f/0xc0
> [14844.601555] [<ffffffff81052ab6>] warn_slowpath_fmt+0x46/0x50
> [14844.601879] [<ffffffff8134a0ec>] debug_print_object+0x8c/0xb0
> [14844.602208] [<ffffffff81104610>] ? watchdog+0x30/0x30
> [14844.602501] [<ffffffff8134a3df>] __debug_object_init+0x20f/0x3e0
> [14844.602843] [<ffffffff816a63b9>] ? __schedule+0x479/0xa00
> [14844.603147] [<ffffffff8134a5cb>] debug_object_init+0x1b/0x20
> [14844.603463] [<ffffffff81086782>] hrtimer_init+0x32/0x180
> [14844.603761] [<ffffffff811048f5>] watchdog_enable+0x85/0x200
> [14844.604077] [<ffffffff810956a1>] ? get_parent_ip+0x11/0x50
> [14844.604388] [<ffffffff8108cd2c>] smpboot_thread_fn+0x10c/0x300
> [14844.604717] [<ffffffff8108cc20>] ? __smpboot_create_thread.part.2+0xc0/0xc0
> [14844.605104] [<ffffffff81081a7d>] kthread+0xed/0x100
> [14844.605381] [<ffffffff816a5d0a>] ? wait_for_common+0x4a/0x180
> [14844.605704] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
> [14844.606070] [<ffffffff816b0d6c>] ret_from_fork+0x7c/0xb0
> [14844.606367] [<ffffffff81081990>] ? kthread_create_on_node+0x160/0x160
> [14844.606728] ---[ end trace 482f8371e46ff852 ]---
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/