FUNCTION::SPRINT_UBA(3stap) Context Functions FUNCTION::SPRINT_UBA(3stap)
function::sprint_ubacktrace - Return stack back trace for current
user-space task as string.
Returns a simple backtrace for the current task. One line per address.
Includes the symbol name (or hex address if symbol couldn't be
resolved) and module name (if found). Includes the offset from the
start of the function if found, otherwise the offset will be added to
the module (if found, between brackets). Returns the backtrace as
string (each line terminated by a newline character). Note that the
returned stack will be truncated to MAXSTRINGLEN, to print fuller and
richer stacks use print_ubacktrace. Equivalent to
sprint_ustack(ubacktrace), but more efficient (no need to translate
between hex strings and final backtrace string).
To get (full) backtraces for user space applications and shared shared
libraries not mentioned in the current script run stap with -d
/path/to/exe-or-so and/or add --ldd to load all needed unwind data.
SystemTap Tapset Reference November 2020 FUNCTION::SPRINT_UBA(3stap)