Hello,
Has anybody seen the lockdep splat listed below? I was rebooting a box to
run the last test before starting the weekend when I saw this one:
[ 688.417543] =============================================
[ 688.417544] [ INFO: possible recursive locking detected ]
[ 688.417546] 4.1.10-rt9+ #4 Not tainted
[ 688.417546] ---------------------------------------------
[ 688.417548] ksoftirqd/0/3 is trying to acquire lock:
[ 688.417556] (((&req->rsk_timer))){+.+...}, at: [<ffffffff81115625>] del_timer_sync+0x5/0x190
[ 688.417557]
but task is already holding lock:
[ 688.417560] (((&req->rsk_timer))){+.+...}, at: [<ffffffff81115885>] call_timer_fn+0x5/0x570
[ 688.417560]
other info that might help us debug this:
[ 688.417560] Possible unsafe locking scenario:
[ 688.417561] CPU0
[ 688.417561] ----
[ 688.417562] lock(((&req->rsk_timer)));
[ 688.417563] lock(((&req->rsk_timer)));
[ 688.417564]
*** DEADLOCK ***
[ 688.417564] May be due to missing lock nesting notation
[ 688.417565] 2 locks held by ksoftirqd/0/3:
[ 688.417571] #0: (&per_cpu(local_softirq_locks[i], __cpu).lock){+.+.+.}, at: [<ffffffff8108c1a3>] do_current_softirqs+0x143/0x820
[ 688.417574] #1: (((&req->rsk_timer))){+.+...}, at: [<ffffffff81115885>] call_timer_fn+0x5/0x570
[ 688.417575]
stack backtrace:
[ 688.417577] CPU: 0 PID: 3 Comm: ksoftirqd/0 Not tainted 4.1.10-rt9+ #4
[ 688.417578] Hardware name: Hewlett-Packard p7-1512/2ADA, BIOS 8.15 02/05/2013
[ 688.417581] 0000000000000000 00000000ba064747 ffff88019327b9c8 ffffffff81824f57
[ 688.417583] 0000000000000000 ffffffff82b33de0 ffff88019327bab8 ffffffff810e78dc
[ 688.417584] ffff88019327ba08 ffff8801931dd960 ffff8801931dd960 ffffffff82b05950
[ 688.417585] Call Trace:
[ 688.417590] [<ffffffff81824f57>] dump_stack+0x4a/0x61
[ 688.417594] [<ffffffff810e78dc>] __lock_acquire+0x205c/0x2110
[ 688.417597] [<ffffffff810e8a4f>] lock_acquire+0xef/0x2f0
[ 688.417599] [<ffffffff81115625>] ? del_timer_sync+0x5/0x190
[ 688.417601] [<ffffffff810e1e2e>] ? put_lock_stats.isra.22+0xe/0x40
[ 688.417603] [<ffffffff81115672>] del_timer_sync+0x52/0x190
[ 688.417604] [<ffffffff81115625>] ? del_timer_sync+0x5/0x190
[ 688.417606] [<ffffffff8182c7f5>] ? _raw_spin_unlock+0x35/0x70
[ 688.417610] [<ffffffff8182a828>] ? rt_spin_lock_slowunlock+0x68/0x70
[ 688.417613] [<ffffffff8173aa8e>] inet_csk_reqsk_queue_drop+0xbe/0x210
[ 688.417614] [<ffffffff8173acc7>] reqsk_timer_handler+0xe7/0x2d0
[ 688.417616] [<ffffffff8173abe0>] ? inet_csk_reqsk_queue_drop+0x210/0x210
[ 688.417618] [<ffffffff81115962>] call_timer_fn+0xe2/0x570
[ 688.417619] [<ffffffff81115885>] ? call_timer_fn+0x5/0x570
[ 688.417620] [<ffffffff8173abe0>] ? inet_csk_reqsk_queue_drop+0x210/0x210
[ 688.417622] [<ffffffff8173abe0>] ? inet_csk_reqsk_queue_drop+0x210/0x210
[ 688.417624] [<ffffffff81115f8c>] run_timer_softirq+0x19c/0x4f0
[ 688.417627] [<ffffffff8108c2cd>] do_current_softirqs+0x26d/0x820
[ 688.417630] [<ffffffff8108c959>] run_ksoftirqd+0x29/0x50
[ 688.417633] [<ffffffff810b2b47>] smpboot_thread_fn+0x207/0x340
[ 688.417636] [<ffffffff810b2940>] ? smpboot_register_percpu_thread+0x100/0x100
[ 688.417640] [<ffffffff810ae3b6>] kthread+0xf6/0x110
[ 688.417643] [<ffffffff818297ab>] ? wait_for_completion+0xeb/0x120
[ 688.417646] [<ffffffff810ae2c0>] ? kthread_create_on_node+0x260/0x260
[ 688.417648] [<ffffffff8182dad2>] ret_from_fork+0x42/0x70
[ 688.417651] [<ffffffff810ae2c0>] ? kthread_create_on_node+0x260/0x260
[ 688.418499] NOHZ: local_softirq_pending 02
[ 688.419498] NOHZ: local_softirq_pending 02
[ 688.420151] NOHZ: local_softirq_pending 02
[ 688.420500] NOHZ: local_softirq_pending 82
[ 688.421499] NOHZ: local_softirq_pending 82
[ 688.422497] NOHZ: local_softirq_pending 82
[ 688.423502] NOHZ: local_softirq_pending 82
[ 688.424497] NOHZ: local_softirq_pending 82
[ 688.425497] NOHZ: local_softirq_pending 82
[ 688.426497] NOHZ: local_softirq_pending 82
[ 747.480722] systemd-journald[4585]: File /var/log/journal/69d27b356a94476da859461d3a3bc6fd/system.journal corrupted or uncleanly shut down, renaming and replacing.
[ 753.461085] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 753.461088] (detected by 0, t=65002 jiffies, g=75549, c=75548, q=16630)
[ 753.461090] All QSes seen, last rcu_preempt kthread activity 65002 (4295420639-4295355637), jiffies_till_next_fqs=3, root ->qsmask 0x0
[ 753.461093] swapper/0 R running task 0 0 0 0x00080000
[ 753.461097] ffffffff81e1b4e0 8bcdf5c08bcdf5b6 ffff880198c03d88 ffffffff810be939
[ 753.461099] ffffffff810be865 000000010006eadf ffffffff81e5cdc0 000000000001271d
[ 753.461101] ffff880198c03e18 ffffffff81110bae 0000000000000000 0000000000000096
[ 753.461102] Call Trace:
[ 753.461110] <IRQ> [<ffffffff810be939>] sched_show_task+0x139/0x260
[ 753.461113] [<ffffffff810be865>] ? sched_show_task+0x65/0x260
[ 753.461117] [<ffffffff81110bae>] rcu_check_callbacks+0xd6e/0xd80
[ 753.461121] [<ffffffff81116f1e>] update_process_times+0x3e/0x50
[ 753.461138] [<ffffffff8112b375>] tick_sched_handle.isra.17+0x25/0x60
[ 753.461140] [<ffffffff8112b717>] tick_sched_timer+0x47/0x90
[ 753.461142] [<ffffffff81118816>] __run_hrtimer+0x106/0x780
[ 753.461144] [<ffffffff81119924>] ? hrtimer_interrupt+0x94/0x270
[ 753.461147] [<ffffffff8112b6d0>] ? tick_sched_do_timer+0x50/0x50
[ 753.461149] [<ffffffff811199b8>] hrtimer_interrupt+0x128/0x270
[ 753.461153] [<ffffffff8103f3aa>] local_apic_timer_interrupt+0x3a/0x70
[ 753.461157] [<ffffffff81830141>] smp_apic_timer_interrupt+0x41/0x60
[ 753.461160] [<ffffffff8182e570>] apic_timer_interrupt+0x70/0x80
[ 753.461164] <EOI> [<ffffffff81685a09>] ? cpuidle_enter_state+0x99/0x3d0
[ 753.461167] [<ffffffff81685a14>] ? cpuidle_enter_state+0xa4/0x3d0
[ 753.461169] [<ffffffff81685a09>] ? cpuidle_enter_state+0x99/0x3d0
[ 753.461171] [<ffffffff81685d77>] cpuidle_enter+0x17/0x20
[ 753.461175] [<ffffffff810da160>] cpu_startup_entry+0x3e0/0x650
[ 753.461178] [<ffffffff81820159>] rest_init+0x139/0x140
[ 753.461181] [<ffffffff8212dfc6>] start_kernel+0x481/0x4a2
[ 753.461184] [<ffffffff8212d2fe>] x86_64_start_reservations+0x2a/0x2c
[ 753.461186] [<ffffffff8212d464>] x86_64_start_kernel+0x164/0x173
[ 753.461188] rcu_preempt kthread starved for 65002 jiffies!
[ 771.935766] ------------[ cut here ]------------
[ 771.935792] WARNING: CPU: 2 PID: 3913 at /home/lclaudio/SANDBOX/mrg-rt-v2-devel/net/core/request_sock.c:121 reqsk_queue_destroy+0x28b/0x2b0()
[ 771.935793] Modules linked in: rfcomm fuse nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 nf_conntrack_ipv6 nf_defrag_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnep vfat fat coretemp kvm_intel kvm arc4 rt2800pci rt2800mmio rt2800lib rt2x00pci rt2x00mmio rt2x00lib btusb eeprom_93cx6 iTCO_wdt iTCO_vendor_support mac80211 btbcm joydev btintel snd_hda_codec_idt bluetooth snd_hda_codec_generic crc32c_intel snd_hda_intel snd_hda_controller snd_hda_codec snd_hda_core ghash_clmulni_intel snd_hwdep microcode snd_seq cfg80211 pcspkr
[ 771.935818] crc_ccitt
[ 771.935818] snd_seq_device
[ 771.935819] snd_pcm
[ 771.935819] rfkill
[ 771.935820] snd_timer
[ 771.935820] snd
[ 771.935821] soundcore
[ 771.935821] tpm_tis
[ 771.935821] lpc_ich
[ 771.935822] tpm
[ 771.935822] shpchp
[ 771.935822] mfd_core
[ 771.935823] i2c_i801
[ 771.935823] acpi_cpufreq
[ 771.935824] nfsd
[ 771.935824] auth_rpcgss
[ 771.935824] nfs_acl
[ 771.935825] lockd
[ 771.935825] grace
[ 771.935825] sunrpc
[ 771.935826] binfmt_misc
[ 771.935826] sch_fq_codel
[ 771.935827] efivarfs
[ 771.935827] serio_raw
[ 771.935828] i915
[ 771.935828] i2c_algo_bit
[ 771.935828] drm_kms_helper
[ 771.935829] drm
[ 771.935829] r8169
[ 771.935830] mii
[ 771.935830] i2c_core
[ 771.935831] video
[ 771.935831] usb_storage
[ 771.935845] CPU: 2 PID: 3913 Comm: transmission-gt Not tainted 4.1.10-rt9+ #4
[ 771.935846] Hardware name: Hewlett-Packard p7-1512/2ADA, BIOS 8.15 02/05/2013
[ 771.935848] 0000000000000000 0000000095cfbf60 ffff880139497cf8 ffffffff81824f57
[ 771.935852] 0000000000000000 0000000000000000 ffff880139497d38 ffffffff8108622a
[ 771.935855] ffff88005de047f8 ffff8800d75d1c40 ffff88005de047f8 ffff88005de04008
[ 771.935858] Call Trace:
[ 771.935863] [<ffffffff81824f57>] dump_stack+0x4a/0x61
[ 771.935867] [<ffffffff8108622a>] warn_slowpath_common+0x8a/0xe0
[ 771.935869] [<ffffffff8108637a>] warn_slowpath_null+0x1a/0x20
[ 771.935871] [<ffffffff816c6fdb>] reqsk_queue_destroy+0x28b/0x2b0
[ 771.935874] [<ffffffff8173a31f>] inet_csk_listen_stop+0x2f/0x350
[ 771.935876] [<ffffffff81740145>] tcp_close+0x45/0x450
[ 771.935880] [<ffffffff81771b3f>] inet_release+0x3f/0x70
[ 771.935883] [<ffffffff817b9a20>] inet6_release+0x30/0x40
[ 771.935885] [<ffffffff816bd45f>] sock_release+0x1f/0x90
[ 771.935887] [<ffffffff816bd4e2>] sock_close+0x12/0x20
[ 771.935890] [<ffffffff8123e200>] __fput+0xf0/0x210
[ 771.935892] [<ffffffff8123e36e>] ____fput+0xe/0x10
[ 771.935895] [<ffffffff810ac85c>] task_work_run+0xcc/0x100
[ 771.935898] [<ffffffff81003d95>] do_notify_resume+0xc5/0x100
[ 771.935901] [<ffffffff8182d8ae>] int_signal+0x12/0x17
[ 771.935903] ---[ end trace 0000000000000002 ]---
[ 771.935905] qlen 1
[ 772.041809] systemd-journald[4585]: File /var/log/journal/69d27b356a94476da859461d3a3bc6fd/user-1000.journal corrupted or uncleanly shut down, renaming and replacing.
[ 812.284647] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 812.284650] (detected by 0, t=65002 jiffies, g=2, c=1, q=12)
[ 812.284651] All QSes seen, last rcu_sched kthread activity 65002 (4295479481-4295414479), jiffies_till_next_fqs=3, root ->qsmask 0x0
[ 812.284655] polkitd R running task 0 775 1 0x00080080
[ 812.284658] ffff88018c2f2770 00000000a03f96c2 ffff880198c03d88 ffffffff810be939
[ 812.284659] ffffffff810be865 000000010007d0b9 ffffffff81e5db80 0000000000000002
[ 812.284661] ffff880198c03e18 ffffffff81110bae 0000000000000000 0000000000000096
[ 812.284662] Call Trace:
[ 812.284669] <IRQ> [<ffffffff810be939>] sched_show_task+0x139/0x260
[ 812.284671] [<ffffffff810be865>] ? sched_show_task+0x65/0x260
[ 812.284676] [<ffffffff81110bae>] rcu_check_callbacks+0xd6e/0xd80
[ 812.284679] [<ffffffff81116f1e>] update_process_times+0x3e/0x50
[ 812.284682] [<ffffffff8112b375>] tick_sched_handle.isra.17+0x25/0x60
[ 812.284684] [<ffffffff8112b717>] tick_sched_timer+0x47/0x90
[ 812.284686] [<ffffffff81118816>] __run_hrtimer+0x106/0x780
[ 812.284688] [<ffffffff81119924>] ? hrtimer_interrupt+0x94/0x270
[ 812.284690] [<ffffffff8112b6d0>] ? tick_sched_do_timer+0x50/0x50
[ 812.284692] [<ffffffff811199b8>] hrtimer_interrupt+0x128/0x270
[ 812.284697] [<ffffffff8103f3aa>] local_apic_timer_interrupt+0x3a/0x70
[ 812.284701] [<ffffffff81830141>] smp_apic_timer_interrupt+0x41/0x60
[ 812.284703] [<ffffffff8115cadc>] ? __audit_syscall_entry+0xac/0x100
[ 812.284705] [<ffffffff8182e570>] apic_timer_interrupt+0x70/0x80
[ 812.284708] <EOI> [<ffffffff8115cadc>] ? __audit_syscall_entry+0xac/0x100
[ 812.284711] [<ffffffff8112128b>] ? current_kernel_time+0x5b/0xb0
[ 812.284713] [<ffffffff8112128d>] ? current_kernel_time+0x5d/0xb0
[ 812.284714] [<ffffffff8115cadc>] ? __audit_syscall_entry+0xac/0x100
[ 812.284716] [<ffffffff8115cadc>] __audit_syscall_entry+0xac/0x100
[ 812.284719] [<ffffffff81014135>] do_audit_syscall_entry+0x55/0x80
[ 812.284721] [<ffffffff810153eb>] syscall_trace_enter_phase1+0x14b/0x1b0
[ 812.284724] [<ffffffff81403919>] ? trace_hardirqs_on_thunk+0x17/0x19
[ 812.284726] [<ffffffff8182d741>] tracesys+0xd/0x44
[ 812.284729] rcu_sched kthread starved for 65002 jiffies!
[ 818.442715] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 818.442718] (detected by 0, t=65002 jiffies, g=75550, c=75549, q=45356)
[ 818.442719] All QSes seen, last rcu_preempt kthread activity 65002 (4295485641-4295420639), jiffies_till_next_fqs=3, root ->qsmask 0x0
[ 818.442722] polkitd R running task 0 775 1 0x00080080
[ 818.442724] ffff88018c2f2770 00000000a03f96c2 ffff880198c03d88 ffffffff810be939
[ 818.442726] ffffffff810be865 000000010007e8c9 ffffffff81e5cdc0 000000000001271e
[ 818.442728] ffff880198c03e18 ffffffff81110bae 0000000000000000 0000000000000096
[ 818.442728] Call Trace:
[ 818.442733] <IRQ> [<ffffffff810be939>] sched_show_task+0x139/0x260
[ 818.442735] [<ffffffff810be865>] ? sched_show_task+0x65/0x260
[ 818.442738] [<ffffffff81110bae>] rcu_check_callbacks+0xd6e/0xd80
[ 818.442741] [<ffffffff81116f1e>] update_process_times+0x3e/0x50
[ 818.442743] [<ffffffff8112b375>] tick_sched_handle.isra.17+0x25/0x60
[ 818.442745] [<ffffffff8112b717>] tick_sched_timer+0x47/0x90
[ 818.442747] [<ffffffff81118816>] __run_hrtimer+0x106/0x780
[ 818.442749] [<ffffffff81119924>] ? hrtimer_interrupt+0x94/0x270
[ 818.442751] [<ffffffff8112b6d0>] ? tick_sched_do_timer+0x50/0x50
[ 818.442753] [<ffffffff811199b8>] hrtimer_interrupt+0x128/0x270
[ 818.442757] [<ffffffff8103f3aa>] local_apic_timer_interrupt+0x3a/0x70
[ 818.442760] [<ffffffff81830141>] smp_apic_timer_interrupt+0x41/0x60
[ 818.442762] [<ffffffff8182e570>] apic_timer_interrupt+0x70/0x80
[ 818.442765] <EOI>
[ 818.442765] rcu_preempt kthread starved for 65002 jiffies!
[ 877.266295] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 877.266297] (detected by 0, t=65002 jiffies, g=3, c=2, q=9)
[ 877.266299] All QSes seen, last rcu_sched kthread activity 65002 (4295544483-4295479481), jiffies_till_next_fqs=3, root ->qsmask 0x0
[ 877.266302] polkitd R running task 0 775 1 0x00080080
[ 877.266305] ffff88018c2f2770 00000000a03f96c2 ffff880198c03d88 ffffffff810be939
[ 877.266307] ffffffff810be865 000000010008cea3 ffffffff81e5db80 0000000000000003
[ 877.266309] ffff880198c03e18 ffffffff81110bae 0000000000000000 0000000000000096
[ 877.266310] Call Trace:
[ 877.266317] <IRQ> [<ffffffff810be939>] sched_show_task+0x139/0x260
[ 877.266319] [<ffffffff810be865>] ? sched_show_task+0x65/0x260
[ 877.266323] [<ffffffff81110bae>] rcu_check_callbacks+0xd6e/0xd80
[ 877.266327] [<ffffffff81116f1e>] update_process_times+0x3e/0x50
[ 877.266330] [<ffffffff8112b375>] tick_sched_handle.isra.17+0x25/0x60
[ 877.266332] [<ffffffff8112b717>] tick_sched_timer+0x47/0x90
[ 877.266334] [<ffffffff81118816>] __run_hrtimer+0x106/0x780
[ 877.266336] [<ffffffff81119924>] ? hrtimer_interrupt+0x94/0x270
[ 877.266338] [<ffffffff8112b6d0>] ? tick_sched_do_timer+0x50/0x50
[ 877.266340] [<ffffffff811199b8>] hrtimer_interrupt+0x128/0x270
[ 877.266344] [<ffffffff8103f3aa>] local_apic_timer_interrupt+0x3a/0x70
[ 877.266349] [<ffffffff81830141>] smp_apic_timer_interrupt+0x41/0x60
[ 877.266351] [<ffffffff8182e570>] apic_timer_interrupt+0x70/0x80
[ 877.266355] <EOI> [<ffffffff810d8e19>] ? add_wait_queue+0x49/0x50
[ 877.266359] [<ffffffff812553a1>] __pollwait+0x81/0xf0
[ 877.266363] [<ffffffff81295e30>] eventfd_poll+0x30/0x70
[ 877.266365] [<ffffffff81256efa>] do_sys_poll+0x36a/0x600
[ 877.266370] [<ffffffff81255320>] ? poll_initwait+0x50/0x50
[ 877.266372] [<ffffffff81255740>] ? poll_select_copy_remaining+0x180/0x180
[ 877.266375] [<ffffffff81255740>] ? poll_select_copy_remaining+0x180/0x180
[ 877.266379] [<ffffffff810e0b75>] ? cpuacct_account_field+0x5/0x1e0
[ 877.266382] [<ffffffff81255953>] ? poll_select_set_timeout+0x53/0x80
[ 877.266385] [<ffffffff8115cadc>] ? __audit_syscall_entry+0xac/0x100
[ 877.266387] [<ffffffff810e554d>] ? trace_hardirqs_on+0xd/0x10
[ 877.266390] [<ffffffff81120af2>] ? ktime_get_ts64+0xa2/0x180
[ 877.266392] [<ffffffff81255953>] ? poll_select_set_timeout+0x53/0x80
[ 877.266395] [<ffffffff81014135>] ? do_audit_syscall_entry+0x55/0x80
[ 877.266398] [<ffffffff81257291>] SyS_poll+0x71/0x130
[ 877.266400] [<ffffffff8182d6d7>] system_call_fastpath+0x12/0x6f
[ 877.266402] rcu_sched kthread starved for 65002 jiffies!
[ 883.424366] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 883.424369] (detected by 0, t=65002 jiffies, g=75551, c=75550, q=44199)
[ 883.424371] All QSes seen, last rcu_preempt kthread activity 65002 (4295550643-4295485641), jiffies_till_next_fqs=3, root ->qsmask 0x0
[ 883.424374] polkitd R running task 0 775 1 0x00080080
[ 883.424377] ffff88018c2f2770 00000000a03f96c2 ffff880198c03d88 ffffffff810be939
[ 883.424379] ffffffff810be865 000000010008e6b3 ffffffff81e5cdc0 000000000001271f
[ 883.424381] ffff880198c03e18 ffffffff81110bae 0000000000000000 0000000000000096
[ 883.424381] Call Trace:
[ 883.424389] <IRQ> [<ffffffff810be939>] sched_show_task+0x139/0x260
[ 883.424391] [<ffffffff810be865>] ? sched_show_task+0x65/0x260
[ 883.424396] [<ffffffff81110bae>] rcu_check_callbacks+0xd6e/0xd80
[ 883.424398] [<ffffffff81116f1e>] update_process_times+0x3e/0x50
[ 883.424402] [<ffffffff8112b375>] tick_sched_handle.isra.17+0x25/0x60
[ 883.424404] [<ffffffff8112b717>] tick_sched_timer+0x47/0x90
[ 883.424406] [<ffffffff81118816>] __run_hrtimer+0x106/0x780
[ 883.424407] [<ffffffff81119924>] ? hrtimer_interrupt+0x94/0x270
[ 883.424409] [<ffffffff8112b6d0>] ? tick_sched_do_timer+0x50/0x50
[ 883.424412] [<ffffffff811199b8>] hrtimer_interrupt+0x128/0x270
[ 883.424416] [<ffffffff8103f3aa>] local_apic_timer_interrupt+0x3a/0x70
[ 883.424420] [<ffffffff81830141>] smp_apic_timer_interrupt+0x41/0x60
[ 883.424422] [<ffffffff8182e570>] apic_timer_interrupt+0x70/0x80
[ 883.424426] <EOI>
[ 883.424426] rcu_preempt kthread starved for 65002 jiffies!
[ 942.247977] INFO: rcu_sched detected stalls on CPUs/tasks:
[ 942.247979] (detected by 0, t=65002 jiffies, g=4, c=3, q=12)
[ 942.247980] All QSes seen, last rcu_sched kthread activity 65002 (4295609485-4295544483), jiffies_till_next_fqs=3, root ->qsmask 0x0
[ 942.247982] swapper/0 R running task 0 0 0 0x00080000
[ 942.247984] ffffffff81e1b4e0 8bcdf5c08bcdf5b6 ffff880198c03d88 ffffffff810be939
[ 942.247985] ffffffff810be865 000000010009cc8d ffffffff81e5db80 0000000000000004
[ 942.247987] ffff880198c03e18 ffffffff81110bae 0000000000000000 0000000000000096
[ 942.247987] Call Trace:
[ 942.247993] <IRQ> [<ffffffff810be939>] sched_show_task+0x139/0x260
[ 942.247994] [<ffffffff810be865>] ? sched_show_task+0x65/0x260
[ 942.247997] [<ffffffff81110bae>] rcu_check_callbacks+0xd6e/0xd80
[ 942.247999] [<ffffffff81116f1e>] update_process_times+0x3e/0x50
[ 942.248002] [<ffffffff8112b375>] tick_sched_handle.isra.17+0x25/0x60
[ 942.248015] [<ffffffff8112b717>] tick_sched_timer+0x47/0x90
[ 942.248016] [<ffffffff81118816>] __run_hrtimer+0x106/0x780
[ 942.248017] [<ffffffff81119924>] ? hrtimer_interrupt+0x94/0x270
[ 942.248031] [<ffffffff8112b6d0>] ? tick_sched_do_timer+0x50/0x50
[ 942.248032] [<ffffffff811199b8>] hrtimer_interrupt+0x128/0x270
[ 942.248035] [<ffffffff8103f3aa>] local_apic_timer_interrupt+0x3a/0x70
[ 942.248038] [<ffffffff81830141>] smp_apic_timer_interrupt+0x41/0x60
[ 942.248039] [<ffffffff8182e570>] apic_timer_interrupt+0x70/0x80
[ 942.248042] <EOI> [<ffffffff81685a09>] ? cpuidle_enter_state+0x99/0x3d0
[ 942.248043] [<ffffffff81685a14>] ? cpuidle_enter_state+0xa4/0x3d0
[ 942.248045] [<ffffffff81685a09>] ? cpuidle_enter_state+0x99/0x3d0
[ 942.248046] [<ffffffff81685d77>] cpuidle_enter+0x17/0x20
[ 942.248049] [<ffffffff810da160>] cpu_startup_entry+0x3e0/0x650
[ 942.248050] [<ffffffff81820159>] rest_init+0x139/0x140
[ 942.248053] [<ffffffff8212dfc6>] start_kernel+0x481/0x4a2
[ 942.248055] [<ffffffff8212d2fe>] x86_64_start_reservations+0x2a/0x2c
[ 942.248056] [<ffffffff8212d464>] x86_64_start_kernel+0x164/0x173
[ 942.248058] rcu_sched kthread starved for 65002 jiffies!
[ 948.406053] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 948.406055] (detected by 1, t=65002 jiffies, g=75552, c=75551, q=34053)
[ 948.406056] All QSes seen, last rcu_preempt kthread activity 65002 (4295615645-4295550643), jiffies_till_next_fqs=3, root ->qsmask 0x0
[ 948.406057] swapper/1 R running task 0 0 1 0x00080000
[ 948.406059] ffff8801932ea770 90ec857a90ec8570 ffff880198e03d88 ffffffff810be939
[ 948.406060] ffffffff810be865 000000010009e49d ffffffff81e5cdc0 0000000000012720
[ 948.406061] ffff880198e03e18 ffffffff81110bae 0000000000000000 0000000000000096
[ 948.406062] Call Trace:
[ 948.406065] <IRQ> [<ffffffff810be939>] sched_show_task+0x139/0x260
[ 948.406067] [<ffffffff810be865>] ? sched_show_task+0x65/0x260
[ 948.406069] [<ffffffff81110bae>] rcu_check_callbacks+0xd6e/0xd80
[ 948.406070] [<ffffffff81116f1e>] update_process_times+0x3e/0x50
[ 948.406072] [<ffffffff8112b375>] tick_sched_handle.isra.17+0x25/0x60
[ 948.406073] [<ffffffff8112b717>] tick_sched_timer+0x47/0x90
[ 948.406075] [<ffffffff81118816>] __run_hrtimer+0x106/0x780
[ 948.406088] [<ffffffff81119924>] ? hrtimer_interrupt+0x94/0x270
[ 948.406089] [<ffffffff8112b6d0>] ? tick_sched_do_timer+0x50/0x50
[ 948.406090] [<ffffffff811199b8>] hrtimer_interrupt+0x128/0x270
[ 948.406104] [<ffffffff8103f3aa>] local_apic_timer_interrupt+0x3a/0x70
[ 948.406106] [<ffffffff81830141>] smp_apic_timer_interrupt+0x41/0x60
[ 948.406107] [<ffffffff8182e570>] apic_timer_interrupt+0x70/0x80
[ 948.406110] <EOI> [<ffffffff81685a09>] ? cpuidle_enter_state+0x99/0x3d0
[ 948.406111] [<ffffffff81685a14>] ? cpuidle_enter_state+0xa4/0x3d0
[ 948.406112] [<ffffffff81685a09>] ? cpuidle_enter_state+0x99/0x3d0
[ 948.406114] [<ffffffff81685d77>] cpuidle_enter+0x17/0x20
[ 948.406116] [<ffffffff810da160>] cpu_startup_entry+0x3e0/0x650
[ 948.406118] [<ffffffff8103d80c>] start_secondary+0x17c/0x1c0
[ 948.406119] rcu_preempt kthread starved for 65002 jiffies!
--
[ Luis Claudio R. Goncalves Bass - Gospel - RT ]
[ Fingerprint: 4FDD B8C4 3C59 34BD 8BE9 2696 7203 D980 A448 C8F8 ]
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