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Date: Thu, 14 Jul 2011 15:14:25 -0700 From: Andrew Morton <akpm@...ux-foundation.org> To: netdev@...r.kernel.org Cc: bugme-daemon@...zilla.kernel.org, Jamal Hadi Salim <hadi@...erus.ca>, lucas.bocchi@...il.com, Patrick McHardy <kaber@...sh.net> Subject: Re: [Bugme-new] [Bug 39372] New: Problems with HFSC Scheduler (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Thu, 14 Jul 2011 13:07:59 GMT bugzilla-daemon@...zilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=39372 > > Summary: Problems with HFSC Scheduler > Product: Networking > Version: 2.5 > Kernel Version: 2.6.39.3 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: acme@...stprotocols.net > ReportedBy: lucas.bocchi@...il.com > Regression: No > > > We have a problem with HFSC scheduler. When use it with my configuration, in > aleatory times the kernel hang and the network device with attached scheduler > hangs and kernel stops to work for a long time. > > Above I'll attach the files with the scheduler used by me > > Additional Information > > Linux optimus 2.6.39.3 #1 SMP Wed Jul 13 09:40:20 BRT 2011 x86_64 GNU/Linux > > Gnu C 4.6.1 > Gnu make 3.81 > binutils 2.21.52.20110606 > util-linux 2.17.2 > mount support > module-init-tools 3.16 > e2fsprogs 1.42-WIP > xfsprogs 3.1.5 > PPP 2.4.5 > Linux C Library 2.13 > Dynamic linker (ldd) 2.13 > Procps 3.2.8 > Net-tools 1.60 > Console-tools 0.2.3 > Sh-utils 8.5 > Modules Loaded cls_u32 sch_sfq sch_hfsc sch_prio pppoe pppox nf_nat_sip > nf_conntrack_sip nf_nat_ftp nf_conntrack_ftp xt_owner ipt_LOG xt_recent > xt_hashlimit xt_TCPMSS xt_tcpmss xt_mark xt_connmark xt_state ipt_MASQUERADE > ipt_REDIRECT ipt_REJECT xt_tcpudp iptable_mangle iptable_nat nf_nat > nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables > tun fuse nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc sit tunnel4 > ppp_generic slhc ext4 jbd2 crc16 sbs sbshc it87 hwmon_vid coretemp loop > kvm_intel kvm snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm > snd_timer snd soundcore snd_page_alloc psmouse serio_raw parport_pc parport > processor pcspkr evdev asus_atk0110 rng_core button thermal_sys ext3 jbd > mbcache btrfs zlib_deflate crc32c libcrc32c usbhid hid ide_gd_mod sd_mod > crc_t10dif ata_generic pata_acpi uhci_hcd ata_piix libata scsi_mod floppy > ehci_hcd ide_pci_generic r8169 8139too 8139cp mii piix ide_core usbcore > It's a warning storm, not really an oops: Jul 13 18:00:22 optimus kernel: [28933.952120] ------------[ cut here ]------------ Jul 13 18:00:22 optimus kernel: [28933.952171] WARNING: at net/sched/sch_hfsc.c:1427 hfsc_dequeue+0x12c/0x275 [sch_hfsc]() Jul 13 18:00:22 optimus kernel: [28933.952234] Hardware name: System Product Name Jul 13 18:00:22 optimus kernel: [28933.952265] Modules linked in: cls_u32 sch_sfq sch_hfsc sch_prio xfs nf_nat_sip nf_conntrack_sip nf_nat_ftp nf_conntrack_ftp xt_owner ipt_LOG xt_recent xt_hashlimit xt_TCPMSS xt_tcpmss xt_mark xt_connmark xt_state ipt_MASQUERADE ipt_REDIRECT ipt_REJECT xt_tcpudp iptable_mangle tun iptable_filter iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 ip_tables x_tables pppoe pppox fuse nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc sit tunnel4 ppp_generic slhc ext4 jbd2 crc16 sbs sbshc it87 hwmon_vid coretemp loop kvm_intel kvm snd_hda_codec_via snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_timer snd asus_atk0110 soundcore evdev snd_page_alloc rng_core processor parport_pc parport thermal_sys button pcspkr psmouse serio_raw ext3 jbd mbcache btrfs zlib_deflate crc32c libcrc32c sd_mod ide_gd_mod crc_t10dif ata_generic pata_acpi ata_piix libata scsi_mod piix floppy uhci_hcd ide_pci_generic ehci_hcd 8139too 8139cp ide_core r8169! mii usbcore [last unloaded: scsi_wait_ Jul 13 18:00:22 optimus kernel: scan] Jul 13 18:00:22 optimus kernel: [28933.952811] Pid: 0, comm: swapper Tainted: G W 2.6.39.3 #1 Jul 13 18:00:22 optimus kernel: [28933.952843] Call Trace: Jul 13 18:00:22 optimus kernel: [28933.952866] <IRQ> [<ffffffff81031aae>] ? warn_slowpath_common+0x78/0x8c Jul 13 18:00:22 optimus kernel: [28933.952906] [<ffffffffa00fb9ec>] ? hfsc_dequeue+0x12c/0x275 [sch_hfsc] Jul 13 18:00:22 optimus kernel: [28933.952940] [<ffffffffa000704d>] ? prio_dequeue+0x1c/0x6e [sch_prio] Jul 13 18:00:22 optimus kernel: [28933.952977] [<ffffffffa0112920>] ? rtl8139_start_xmit+0x6a/0xf7 [8139too] Jul 13 18:00:22 optimus kernel: [28933.953012] [<ffffffff8123408e>] ? __qdisc_run+0x8e/0x115 Jul 13 18:00:22 optimus kernel: [28933.953044] [<ffffffff8121ae48>] ? net_tx_action+0xef/0x124 Jul 13 18:00:22 optimus kernel: [28933.953075] [<ffffffff81036bbb>] ? __do_softirq+0xc7/0x192 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff812d5fdc>] ? call_softirq+0x1c/0x26 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff810037ba>] ? do_softirq+0x3c/0x7a Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff81036e4c>] ? irq_exit+0x4a/0x94 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff810156fb>] ? smp_apic_timer_interrupt+0x75/0x82 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff812d578e>] ? apic_timer_interrupt+0xe/0x20 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff812d5793>] ? apic_timer_interrupt+0x13/0x20 Jul 13 18:00:22 optimus kernel: [28933.953105] <EOI> [<ffffffff81007be7>] ? mwait_idle+0x8b/0xb7 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff81007bda>] ? mwait_idle+0x7e/0xb7 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff810011e2>] ? cpu_idle+0x9d/0xd7 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff81b91b16>] ? start_kernel+0x3b4/0x3bf Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff81b91140>] ? early_idt_handlers+0x140/0x140 Jul 13 18:00:22 optimus kernel: [28933.953105] [<ffffffff81b913a8>] ? x86_64_start_kernel+0x104/0x111 Jul 13 18:00:22 optimus kernel: [28933.953105] ---[ end trace 05058983c1ade13b ]--- Jul 13 18:00:22 optimus kernel: [28933.953105] ------------[ cut here ]------------ Here: WARN_ON(next_time == 0); There's some more info in the bugzilla report. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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