Description of problem: Probe 'python.function.entry' doesn't fire when used with python3.11, the older versions do. Version-Release number of selected component (if applicable): python3.11-3.11.2-2.el9 How reproducible: always Steps to Reproduce: 1. create script.py with: import random, time print(random.random()) time.sleep(3) 2. create probe.stp with: #!/usr/bin/stap -v probe python.function.entry { if ( filename =~ "random" ) printf("%s => %s in %s:%d\n", thread_indent(1), funcname, filename, lineno); } 3. stap probe.stp -v -c "python3.11 script.py" Actual results: just random integer printed Expected results: output from python3.8 is like 3649 python3.8(61912): => Random in /usr/lib64/python3.8/random.py:78 3677 python3.8(61912): => SystemRandom in /usr/lib64/python3.8/random.py:709 3694 python3.8(61912): => __init_subclass__ in /usr/lib64/python3.8/random.py:103 3705 python3.8(61912): => __init__ in /usr/lib64/python3.8/random.py:94 3707 python3.8(61912): => seed in /usr/lib64/python3.8/random.py:123 Additional info:
I can reproduce the difference on Fedora: $ sudo stap probe.stp -v -c "python3.11 script.py" Pass 1: parsed user script and 535 library scripts using 575376virt/332460res/15484shr/316708data kb, in 490usr/80sys/566real ms. Pass 2: analyzed script: 11 probes, 14 functions, 2 embeds, 2 globals using 608656virt/357412res/19124shr/349988data kb, in 110usr/10sys/117real ms. Pass 3: translated to C into "/tmp/stape4dZII/stap_9fa553ac31a31de18203ad90492e581a_12144_src.c" using 608672virt/369488res/19612shr/350004data kb, in 100usr/90sys/192real ms. Pass 4: compiled C into "stap_9fa553ac31a31de18203ad90492e581a_12144.ko" in 1760usr/390sys/1988real ms. Pass 5: starting run. 0.246567578357341 Pass 5: run completed in 30usr/60sys/3431real ms. $ sudo stap probe.stp -v -c "python3.10 script.py" Pass 1: parsed user script and 535 library scripts using 575376virt/332400res/15424shr/316708data kb, in 490usr/70sys/562real ms. Pass 2: analyzed script: 11 probes, 14 functions, 2 embeds, 2 globals using 608656virt/357372res/19084shr/349988data kb, in 110usr/0sys/115real ms. Pass 3: translated to C into "/tmp/stapsfa1kk/stap_960a509d59f42ecc5fdfe3e95b6e8abd_12144_src.c" using 608672virt/369440res/19564shr/350004data kb, in 110usr/90sys/198real ms. Pass 4: compiled C into "stap_960a509d59f42ecc5fdfe3e95b6e8abd_12144.ko" in 1800usr/440sys/2073real ms. Pass 5: starting run. 0 python3.10(3588962): => <module> in /usr/lib64/python3.10/random.py:1 0.9428721885880854 3159 python3.10(3588962): => Random in /usr/lib64/python3.10/random.py:103 3179 python3.10(3588962): => SystemRandom in /usr/lib64/python3.10/random.py:813 3192 python3.10(3588962): => __init_subclass__ in /usr/lib64/python3.10/random.py:219 3207 python3.10(3588962): => __init__ in /usr/lib64/python3.10/random.py:119 3208 python3.10(3588962): => seed in /usr/lib64/python3.10/random.py:128 Pass 5: run completed in 20usr/70sys/3443real ms. $ sudo stap probe.stp -v -c "python3.9 script.py" Pass 1: parsed user script and 535 library scripts using 575376virt/332424res/15448shr/316708data kb, in 520usr/80sys/601real ms. Pass 2: analyzed script: 11 probes, 14 functions, 2 embeds, 2 globals using 608656virt/357448res/19160shr/349988data kb, in 120usr/0sys/123real ms. Pass 3: translated to C into "/tmp/stapQ3UJLx/stap_0c04ce72ddc21345525440096a38419c_12143_src.c" using 608672virt/369556res/19680shr/350004data kb, in 110usr/100sys/212real ms. Pass 4: compiled C into "stap_0c04ce72ddc21345525440096a38419c_12143.ko" in 1740usr/320sys/1886real ms. Pass 5: starting run. 0 python3.9(3589395): => <module> in /usr/lib64/python3.9/random.py:1 0.41255422987101886 3231 python3.9(3589395): => Random in /usr/lib64/python3.9/random.py:101 3251 python3.9(3589395): => SystemRandom in /usr/lib64/python3.9/random.py:778 3264 python3.9(3589395): => __init_subclass__ in /usr/lib64/python3.9/random.py:217 3274 python3.9(3589395): => __init__ in /usr/lib64/python3.9/random.py:117 3276 python3.9(3589395): => seed in /usr/lib64/python3.9/random.py:126 Pass 5: run completed in 10usr/60sys/3439real ms.
I think this is a possible dupe of https://bugzilla.redhat.com/show_bug.cgi?id=2152970 .
There is some movement on the upstream issue [0], let's wait on what develops. We currently don't have the resources to address the issue downstream. [0] https://github.com/python/cpython/issues/104280