report log for Linux beaglebone 4.1.10-bone16 #1 Fri Dec 4 09:10:38 CET 2015 armv7l GNU/Linux

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1

report log :

[ 274.056770] sysrq: SysRq : HELP : loglevel(0-9) reboot(b) crash© terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers§ show-all-timers(q) unraw® sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
[ 274.090080] sysrq: SysRq : HELP : loglevel(0-9) reboot(b) crash© terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers§ show-all-timers(q) unraw® sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
[ 274.123329] sysrq: SysRq : HELP : loglevel(0-9) reboot(b) crash© terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers§ show-all-timers(q) unraw® sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
[ 274.449663] sysrq: SysRq : HELP : loglevel(0-9) reboot(b) crash© terminate-all-tasks(e) memory-full-oom-kill(f) kill-all-tasks(i) thaw-filesystems(j) sak(k) show-memory-usage(m) nice-all-RT-tasks(n) poweroff(o) show-registers§ show-all-timers(q) unraw® sync(s) show-task-states(t) unmount(u) force-fb(V) show-blocked-tasks(w) dump-ftrace-buffer(z)
[ 274.482054] sysrq: SysRq : This sysrq operation is disabled.

2

So you pressed the "SysRq" key combination..

Go read up on what you can do with it:

https://en.wikipedia.org/wiki/Magic_SysRq_key

Regards,

3

Thank you !