Date: 2018oct15 OS: Linux Language: text Q. Linux: Stack trace of any running process A. Simply, `cat` the stack file for the process:

cat /proc/$PID/stack

For example of an idle BOINC:

[<0>] poll_schedule_timeout+0x41/0x70 [<0>] do_select+0x526/0x780 [<0>] core_sys_select+0x20e/0x2f0 [<0>] kern_select+0xb5/0x110 [<0>] __x64_sys_select+0x20/0x30 [<0>] do_syscall_64+0x5b/0x160 [<0>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [<0>] 0xffffffffffffffff