Eu tenho meu terminal sempre aberto (Fedora 22), porque todo o meu trabalho que faço a partir daí. Às vezes, procuro algumas informações no navegador ou apenas me divirto. Após 20 a 30 minutos de navegação (o navegador não inicia na linha de comando), volto ao terminal e vi algo estranho - estava em todas as guias do terminal:
Message from syslogd@localhost at Jul 17 23:17:19 ...
kernel:NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [migration/2:21]
Message from syslogd@localhost at Jul 17 23:17:38 ...
kernel:CPU: 2 PID: 21 Comm: migration/2 Not tainted 4.0.7-300.fc22.i686 #1
Message from syslogd@localhost at Jul 17 23:17:39 ...
kernel:Hardware name: LENOVO 20126/123456789, BIOS 5BCN30WW 10/10/2012
Message from syslogd@localhost at Jul 17 23:17:39 ...
kernel:task: f45f0000 ti: f45ec000 task.ti: f45ec000
Message from syslogd@localhost at Jul 17 23:17:39 ...
kernel:Stack:
Message from syslogd@localhost at Jul 17 23:17:40 ...
kernel:Call Trace:
Message from syslogd@localhost at Jul 17 23:17:40 ...
kernel: <IRQ>
Message from syslogd@localhost at Jul 17 23:17:40 ...
kernel:#000<IRQ> #000868>] do_softirq_own_stack+0x28/0x30#0000xc0 [mac80211]#000c80211]#000014#000es iptable_nat nf_conntrack_localhost#000frag_ipv4 nf_nat_ipv4 nf_kernel#000conntrack#000#000#000#000el:#000_mangle iptable_security#000ul 17 23:17:40#000#000hda_codec_realtek snd_hda_codec_#000eneric#000arc4 s#000d_hda_intel#000rtl8192ce s#000d_hda_co#000#000#000#000�#001#000#000-#000#000#000�s#003�09b3e98>] ip_rcv+0x2e8/0x410#000#000#000#000%#000#000#000localhost.localdomain#000videob#025#000#000#000kernel#000Y#0009#000#000#025#000#000#000_MACHINE_ID#000-#000#000#000#006#000#000#000�'g�p&g�#001#000#000#000#000#000#000#000#020#026#000�#001#000#000#000#000#000#000#000#000#000#000#000#025#000#000#000_TRANSPORT#0001#025#000#000#000PRIORITY#0002#000#000-#000#000#000#006#000#000#000�'g�p&g�#001#000#000#000#000#000#000#000Pw#003�#006#000#000#000#000#000#000#000#000#000#000#000-#000#000#0000r#003��'g�p&g�#000#000#000#000#000#000#000#0008r#003� #000#000#000#000#000#000#000#000#000#000#000#025#000#000#0006036995285#000#0005#000#000#000 k#003�045c0c0>]...
e um pouco mais de coisas como essas últimas longas filas. O laptop não se comportou como algo errado, era apenas esse log em todas as guias do terminal.
O que é isso???
dmesg
mostra o comando?