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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - INFO: task Xorg:2419 blocked for more than 120 seconds."
href="https://bugs.freedesktop.org/show_bug.cgi?id=91413#c7">Comment # 7</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - INFO: task Xorg:2419 blocked for more than 120 seconds."
href="https://bugs.freedesktop.org/show_bug.cgi?id=91413">bug 91413</a>
from <span class="vcard"><a class="email" href="mailto:joshchia@gmail.com" title="joshchia@gmail.com">joshchia@gmail.com</a>
</span></b>
<pre>On kernel 4.2.6, I got a similar crash. The CPU locked up. The machine was
doing some heavy computation on many processors. After removing the nouveau
module, the problem went away.
Dec 06 18:51:50 bullseye kernel: WARNING: CPU: 0 PID: 19974 at
kernel/watchdog.c:338 watchdog_overflow_callback+0x79/0xa0()
Dec 06 18:51:50 bullseye kernel: Watchdog detected hard LOCKUP on cpu 0
Dec 06 18:51:50 bullseye kernel: Modules linked in:
Dec 06 18:51:50 bullseye kernel: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6
xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables
ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle
ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat
nf_conntrack_ipv4
Dec 06 18:51:50 bullseye kernel: crc32_pclmul crc32c_intel drm serio_raw uas
usb_storage hpsa ata_generic pata_acpi wmi
Dec 06 18:51:50 bullseye kernel: CPU: 0 PID: 19974 Comm: redacted Not tainted
4.2.6-201.fc22.x86_64 #1
Dec 06 18:51:50 bullseye kernel: Hardware name: HP ProLiant DL360p Gen8, BIOS
P71 07/01/2015
Dec 06 18:51:50 bullseye kernel: 0000000000000000 000000009a975639
ffff880fff605aa0 ffffffff817729ea
Dec 06 18:51:50 bullseye kernel: 0000000000000000 ffff880fff605af8
ffff880fff605ae0 ffffffff8109e4b6
Dec 06 18:51:50 bullseye kernel: 0000000000000000 ffff881ff92ae000
0000000000000000 ffff880fff605c00
Dec 06 18:51:50 bullseye kernel: Call Trace:
Dec 06 18:51:50 bullseye kernel: <NMI> [<ffffffff817729ea>]
dump_stack+0x45/0x57
Dec 06 18:51:50 bullseye kernel: [<ffffffff8109e4b6>]
warn_slowpath_common+0x86/0xc0
Dec 06 18:51:50 bullseye kernel: [<ffffffff8109e545>]
warn_slowpath_fmt+0x55/0x70
Dec 06 18:51:50 bullseye kernel: [<ffffffff81153029>]
watchdog_overflow_callback+0x79/0xa0
Dec 06 18:51:50 bullseye kernel: [<ffffffff81197f50>]
__perf_event_overflow+0x90/0x1c0
Dec 06 18:51:50 bullseye kernel: [<ffffffff81198b54>]
perf_event_overflow+0x14/0x20
Dec 06 18:51:50 bullseye kernel: [<ffffffff81033af7>]
intel_pmu_handle_irq+0x1e7/0x470
Dec 06 18:51:50 bullseye kernel: [<ffffffff8102a3e6>]
perf_event_nmi_handler+0x26/0x40
Dec 06 18:51:50 bullseye kernel: [<ffffffff810188b3>] nmi_handle+0x83/0x120
Dec 06 18:51:50 bullseye kernel: [<ffffffff81018df2>] default_do_nmi+0x42/0xf0
Dec 06 18:51:50 bullseye kernel: [<ffffffff81018f8a>] do_nmi+0xea/0x140
Dec 06 18:51:50 bullseye kernel: [<ffffffff8177b701>] end_repeat_nmi+0x1a/0x1e
Dec 06 18:51:50 bullseye kernel: [<ffffffff810e677c>] ?
queued_spin_lock_slowpath+0x15c/0x170
Dec 06 18:51:50 bullseye kernel: [<ffffffff810e677c>] ?
queued_spin_lock_slowpath+0x15c/0x170
Dec 06 18:51:50 bullseye kernel: [<ffffffff810e677c>] ?
queued_spin_lock_slowpath+0x15c/0x170
Dec 06 18:51:50 bullseye kernel: <<EOE>> <IRQ> [<ffffffff817791df>]
_raw_spin_lock_irqsave+0x3f/0x50
Dec 06 18:51:50 bullseye kernel: [<ffffffffa0218cbe>]
nvkm_fantog_update+0x4e/0x120 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa0218de5>]
nvkm_fantog_set+0x35/0x40 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa02182cc>]
nvkm_fan_update+0xec/0x1e0 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa02183f9>]
nvkm_therm_fan_set+0x19/0x20 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa0217bfc>]
nvkm_therm_update+0x11c/0x2d0 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa0217dca>]
nvkm_therm_alarm+0x1a/0x20 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa021b472>]
nv04_timer_alarm_trigger+0x122/0x170 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa021b521>]
nv04_timer_alarm+0x61/0xc0 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa0218d82>]
nvkm_fantog_update+0x112/0x120 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa0218daa>]
nvkm_fantog_alarm+0x1a/0x20 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa021b472>]
nv04_timer_alarm_trigger+0x122/0x170 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa021b5e2>]
nv04_timer_intr+0x62/0x80 [nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffffa021211b>] nvkm_mc_intr+0xfb/0x170
[nouveau]
Dec 06 18:51:50 bullseye kernel: [<ffffffff810f5ff4>]
handle_irq_event_percpu+0x74/0x180
Dec 06 18:51:50 bullseye kernel: [<ffffffff810f6130>]
handle_irq_event+0x30/0x60
Dec 06 18:51:50 bullseye kernel: [<ffffffff810f944f>]
handle_edge_irq+0x6f/0x130
Dec 06 18:51:50 bullseye kernel: [<ffffffff81016e62>] handle_irq+0x72/0x120
Dec 06 18:51:50 bullseye kernel: [<ffffffff8177c01f>] do_IRQ+0x4f/0xe0
Dec 06 18:51:50 bullseye kernel: [<ffffffff81779f2b>]
common_interrupt+0x6b/0x6b
Dec 06 18:51:50 bullseye kernel: <EOI>
Dec 06 18:51:50 bullseye kernel: ---[ end trace c72347df4d25d0c7 ]---
Dec 06 18:51:50 bullseye kernel: INFO: rcu_sched detected stalls on CPUs/tasks:
{ 0} (detected by 17, t=60002 jiffies, g=184581, c=184580, q=0)
Dec 06 18:51:50 bullseye kernel: Task dump for CPU 0:
Dec 06 18:51:50 bullseye kernel: redacted R running task 0 19974
3145 0x00000008
Dec 06 18:51:50 bullseye kernel: ffff8819589e7b98 ffff881ff7e69800
ffffffffffffff74 0000000000000028
Dec 06 18:51:50 bullseye kernel: 0000000000000000 0000000000000020
ffff8819589e7b98 ffffffff8164869c
Dec 06 18:51:50 bullseye kernel: 0000000000000000 ffff881ff7e69800
ffff8819589e7bc8 ffffffff816c1c80
Dec 06 18:51:50 bullseye kernel: Call Trace:
Dec 06 18:51:50 bullseye kernel: [<ffffffff8164869c>] ?
sk_reset_timer+0x1c/0x30
Dec 06 18:51:50 bullseye kernel: [<ffffffff816c1c80>]
tcp_send_delayed_ack+0x100/0x130
Dec 06 18:51:50 bullseye kernel: [<ffffffff816b36cd>]
__tcp_ack_snd_check+0x6d/0x90
Dec 06 18:51:50 bullseye kernel: [<ffffffff816bb4fc>]
tcp_rcv_established+0x4cc/0x780
Dec 06 18:51:50 bullseye kernel: [<ffffffff813aeac9>] ?
copy_to_iter+0x79/0x260
Dec 06 18:51:50 bullseye kernel: [<ffffffff81778f2a>] ?
_raw_write_unlock_bh+0x1a/0x20
Dec 06 18:51:50 bullseye kernel: [<ffffffff81778f3e>] ?
_raw_spin_unlock_bh+0xe/0x10
Dec 06 18:51:50 bullseye kernel: [<ffffffff81648f66>] ?
release_sock+0x106/0x150
Dec 06 18:51:50 bullseye kernel: [<ffffffff810d28af>] ?
numa_migrate_preferred+0x2f/0x90
Dec 06 18:51:50 bullseye kernel: [<ffffffff810d686d>] ?
task_numa_fault+0x7bd/0xae0
Dec 06 18:51:50 bullseye kernel: [<ffffffff811d5f81>] ?
handle_mm_fault+0xb81/0x17d0
Dec 06 18:51:50 bullseye kernel: [<ffffffff816447cb>] ? sock_recvmsg+0x3b/0x50
Dec 06 18:51:50 bullseye kernel: [<ffffffff81644a16>] ?
SYSC_recvfrom+0xd6/0x150
Dec 06 18:51:50 bullseye kernel: [<ffffffff81065454>] ?
__do_page_fault+0x1b4/0x400
Dec 06 18:51:50 bullseye kernel: [<ffffffff81774d11>] ? __schedule+0x371/0x950
Dec 06 18:51:50 bullseye kernel: [<ffffffff810656cf>] ?
do_page_fault+0x2f/0x80
Dec 06 18:51:50 bullseye kernel: [<ffffffff8177b378>] ? page_fault+0x28/0x30</pre>
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