linux-kernel - Re: [PATCH] Power Manager suspend-hybrid warn on systemlog

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Message-Id: <201104262236.10340.rjw@sisk.pl>
Date:	Tue, 26 Apr 2011 22:36:10 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Alexandre Felipe Muller de Souza <alexandrefm@...driva.com.br>
Cc:	Pavel Machek <pavel@....cz>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux PM mailing list <linux-pm@...ts.linux-foundation.org>
Subject: Re: [PATCH] Power Manager suspend-hybrid warn on systemlog

On Tuesday, April 26, 2011, Alexandre Felipe Muller de Souza wrote:
> Rafael, thank you a lot for your reply.
> 
> Unfortunately something strange occurred when I applied any one of this
> 2 patches you sent.
> 
> The network interface flooded the demsg with many times of that:
> WARNING: at net/mac80211/iface.c:718 ieee80211_iface_work+0x305/0x310
> [mac80211]()
> Hardware name: P MOBILE
> interface work scheduled while going to suspend
> Modules linked in: option usb_wwan usbserial sit tunnel4 fuse ipt_IFWLOG
> ipt_psd cls_flow cls_fw cls_u32 sch_htb sch_hfsc sch_ingress sch_sfq
> xt_time xt_connlimit xt_realm iptable_raw xt_comment xt_recent xt_policy
> ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN
> ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype nf_nat_tftp nf_nat_snmp_basic
> nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323
> nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda nf_conntrack_sane
> nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp
> nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink
> nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_h323
> nf_conntrack_ftp ipt_set ipt_SET ip_set_nethash ip_set_iptreemap
> ip_set_iptree ip_set_ipporthash ip_set_portmap ip_set_macipmap
> ip_set_ipmap ip_set_iphash ip_set xt_TPROXY nf_tproxy_core ip6_tables
> nf_defrag_ipv6 xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE
> xt_NFLOG nfnetlink_log xt_multiport xt_mark af_packet xt_mac xt_limit
> xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp
> xt_conntrack xt_connmark xt_CLASSIFY ipt_LOG xt_tcpudp xt_state
> iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack
> iptable_mangle nfnetlink iptable_filter ip_tables x_tables ipv6 i915
> drm_kms_helper drm i2c_algo_bit binfmt_misc loop dm_mirror
> dm_region_hash dm_log dm_mod uvcvideo videodev i2c_core cpufreq_ondemand
> cpufreq_conservative cpufreq_powersave acpi_cpufreq freq_table mperf
> nvram snd_hda_codec_hdmi usbhid hid uas usb_storage
> snd_hda_codec_realtek snd_hda_intel arc4 snd_hda_codec snd_hwdep ecb
> snd_seq_dummy rtl8192ce snd_seq_oss snd_seq_midi_event snd_seq
> snd_seq_device pciehp pci_hotplug snd_pcm_oss snd_pcm rtlwifi snd_timer
> snd_mixer_oss snd iTCO_wdt soundcore ehci_hcd iTCO_vendor_support
> mac80211 sparse_keymap sg sr_mod r8169 battery mii cfg80211 rfkill
> serio_raw wmi snd_page_alloc evdev ac processor thermal button video
> usbcore ata_piix ahci libahci libata sd_mod scsi_mod crc_t10dif ext4
> jbd2 crc16 [last unloaded: scsi_wait_scan]
> Pid: 6209, comm: kworker/u:11 Tainted: G        W
> 2.6.38.3-server-1mnb2 #1
> Call Trace:
>  [<c0151a72>] ? warn_slowpath_common+0x72/0xa0
>  [<f847f735>] ? ieee80211_iface_work+0x305/0x310 [mac80211]
>  [<f847f735>] ? ieee80211_iface_work+0x305/0x310 [mac80211]
>  [<c0151b43>] ? warn_slowpath_fmt+0x33/0x40
>  [<f847f735>] ? ieee80211_iface_work+0x305/0x310 [mac80211]
>  [<c0168cf2>] ? cwq_dec_nr_in_flight+0x52/0x90
>  [<c016a300>] ? process_one_work+0x100/0x3a0
>  [<c014bd94>] ? wake_up_process+0x14/0x20
>  [<c01681f5>] ? start_worker+0x25/0x30
>  [<f847f430>] ? ieee80211_iface_work+0x0/0x310 [mac80211]
>  [<c016b0ba>] ? worker_thread+0x12a/0x2e0
>  [<c016af90>] ? worker_thread+0x0/0x2e0
>  [<c016e9ed>] ? kthread+0x6d/0x80
>  [<c016e980>] ? kthread+0x0/0x80
>  [<c010b43e>] ? kernel_thread_helper+0x6/0x10
> ---[ end trace bbe4a610450faaf0 ]---
> WARNING: at net/mac80211/work.c:904 ieee80211_work_work+0x2bf/0x10e0
> [mac80211]()
> Hardware name: P MOBILE
> work scheduled while going to suspend
> Modules linked in: option usb_wwan usbserial sit tunnel4 fuse ipt_IFWLOG
> ipt_psd cls_flow cls_fw cls_u32 sch_htb sch_hfsc sch_ingress sch_sfq
> xt_time xt_connlimit xt_realm iptable_raw xt_comment xt_recent xt_policy
> ipt_ULOG ipt_REJECT ipt_REDIRECT ipt_NETMAP ipt_MASQUERADE ipt_ECN
> ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype nf_nat_tftp nf_nat_snmp_basic
> nf_nat_sip nf_nat_pptp nf_nat_proto_gre nf_nat_irc nf_nat_h323
> nf_nat_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda nf_conntrack_sane
> nf_conntrack_tftp nf_conntrack_sip nf_conntrack_proto_sctp
> nf_conntrack_pptp nf_conntrack_proto_gre nf_conntrack_netlink
> nf_conntrack_netbios_ns nf_conntrack_irc nf_conntrack_h323
> nf_conntrack_ftp ipt_set ipt_SET ip_set_nethash ip_set_iptreemap
> ip_set_iptree ip_set_ipporthash ip_set_portmap ip_set_macipmap
> ip_set_ipmap ip_set_iphash ip_set xt_TPROXY nf_tproxy_core ip6_tables
> nf_defrag_ipv6 xt_tcpmss xt_pkttype xt_physdev xt_owner xt_NFQUEUE
> xt_NFLOG nfnetlink_log xt_multiport xt_mark af_packet xt_mac xt_limit
> xt_length xt_iprange xt_helper xt_hashlimit xt_DSCP xt_dscp xt_dccp
> xt_conntrack xt_connmark xt_CLASSIFY ipt_LOG xt_tcpudp xt_state
> iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack
> iptable_mangle nfnetlink iptable_filter ip_tables x_tables ipv6 i915
> drm_kms_helper drm i2c_algo_bit binfmt_misc loop dm_mirror
> dm_region_hash dm_log dm_mod uvcvideo videodev i2c_core cpufreq_ondemand
> cpufreq_conservative cpufreq_powersave acpi_cpufreq freq_table mperf
> nvram snd_hda_codec_hdmi usbhid hid uas usb_storage
> snd_hda_codec_realtek snd_hda_intel arc4 snd_hda_codec snd_hwdep ecb
> snd_seq_dummy rtl8192ce snd_seq_oss snd_seq_midi_event snd_seq
> snd_seq_device pciehp pci_hotplug snd_pcm_oss snd_pcm rtlwifi snd_timer
> snd_mixer_oss snd iTCO_wdt soundcore ehci_hcd iTCO_vendor_support
> mac80211 sparse_keymap sg sr_mod r8169 battery mii cfg80211 rfkill
> serio_raw wmi snd_page_alloc evdev ac processor thermal button video
> usbcore ata_piix ahci libahci libata sd_mod scsi_mod crc_t10dif ext4
> jbd2 crc16 [last unloaded: scsi_wait_scan]
> Pid: 6209, comm: kworker/u:11 Tainted: G        W
> 2.6.38.3-server-1mnb2 #1
> Call Trace:
>  [<c0151a72>] ? warn_slowpath_common+0x72/0xa0
>  [<f847dc1f>] ? ieee80211_work_work+0x2bf/0x10e0 [mac80211]
>  [<f847dc1f>] ? ieee80211_work_work+0x2bf/0x10e0 [mac80211]
>  [<c0151b43>] ? warn_slowpath_fmt+0x33/0x40
>  [<f847dc1f>] ? ieee80211_work_work+0x2bf/0x10e0 [mac80211]
>  [<f847f735>] ? ieee80211_iface_work+0x305/0x310 [mac80211]
>  [<f847f735>] ? ieee80211_iface_work+0x305/0x310 [mac80211]
>  [<c016a300>] ? process_one_work+0x100/0x3a0
>  [<c014bd94>] ? wake_up_process+0x14/0x20
>  [<c01681f5>] ? start_worker+0x25/0x30
>  [<f847d960>] ? ieee80211_work_work+0x0/0x10e0 [mac80211]
>  [<c016b0ba>] ? worker_thread+0x12a/0x2e0
>  [<c016af90>] ? worker_thread+0x0/0x2e0
>  [<c016e9ed>] ? kthread+0x6d/0x80
>  [<c016e980>] ? kthread+0x0/0x80
>  [<c010b43e>] ? kernel_thread_helper+0x6/0x10
> ---[ end trace bbe4a610450faaf1 ]---
> 
> With the stupid hack I posted first It does not occurs.

At which point exactly has this happened?

Rafael
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