perf mem report aborts as below sometimes (during some corner
case) in powerpc:
# ./perf mem report 1>out
*** stack smashing detected ***: terminated
Aborted (core dumped)
The backtrace is as below:
__pthread_kill_implementation ()
raise ()
abort ()
__libc_message
__fortif
During performance monitor interrupt handling, the regs are setup using
perf_read_regs function. Here some of the pt_regs fields is overloaded.
Samples Instruction Event Register (SIER) is loaded into pt_regs,
overloading regs->dar. And regs->dsisr to store MMCRA (Monitor Mode
Control Register A) s
On Fri, 10 Jan 2025 15:07:30 +0530, Athira Rajeev wrote:
> perf lock contention returns zero exit value even if the lock contention
> BPF setup failed.
>
> # ./perf lock con -b true
> libbpf: kernel BTF is missing at '/sys/kernel/btf/vmlinux', was
> CONFIG_DEBUG_INFO_BTF enabled?
> libbpf:
