Comments (3)
I tried to use postponed jobs, but it actually crashes even more:
[BUG] Segmentation fault at 0x0000000000000020
ruby 3.3.0dev (2023-11-22T17:01:13Z shopify c1fc1a00ea) +MN [x86_64-linux]
-- Machine register context ------------------------------------------------
RIP: 0x000055df5fe38489 RBP: 0x00007f517bc59000 RSP: 0x00007f5123f3c6d0
RAX: 0x0000000000000000 RBX: 0x00007f51596554e0 RCX: 0x00007f517bdb6b40
RDX: 0x0000000000000001 RDI: 0x00007f517bc59000 RSI: 0x0000000000000000
R8: 0x0000000000000000 R9: 0x00000000ffffffff R10: 0x0000000000000000
R11: 0x0000000000000246 R12: 0x0000000000000000 R13: 0x0000000000000000
R14: 0x0000000000001ea5 R15: 0x00007f517bc59104 EFL: 0x0000000000010202
-- C level backtrace information -------------------------------------------
/usr/local/ruby/bin/ruby(rb_print_backtrace+0x14) [0x55df5fe328e1] /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/vm_dump.c:812
/usr/local/ruby/bin/ruby(rb_vm_bugreport) /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/vm_dump.c:1143
/usr/local/ruby/bin/ruby(rb_bug_for_fatal_signal+0xfc) [0x55df5ffe509c] /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/error.c:1065
/usr/local/ruby/bin/ruby(sigsegv+0x4d) [0x55df5fd7f19d] /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/signal.c:920
/lib/x86_64-linux-gnu/libc.so.6(0x7f517c277520) [0x7f517c277520]
/usr/local/ruby/bin/ruby(rbimpl_atomic_or+0x0) [0x55df5fe38489] /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/vm_trace.c:1691
/usr/local/ruby/bin/ruby(postponed_job_register) /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/vm_trace.c:1693
/usr/local/ruby/bin/ruby(postponed_job_register) /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/vm_trace.c:1675
/usr/local/ruby/bin/ruby(rb_postponed_job_register_one) /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/vm_trace.c:1746
/tmp/bundle/ruby/3.3.0+0/gems/stackprof-0.2.25/lib/stackprof/stackprof.so(stackprof_signal_handler+0x2d) [0x7f5159655434] /tmp/bundle/ruby/3.3.0+0/gems/stackprof-0.2.25/ext/stackprof/stackprof.c:763
/tmp/bundle/ruby/3.3.0+0/gems/stackprof-0.2.25/lib/stackprof/stackprof.so(stackprof_signal_handler) /tmp/bundle/ruby/3.3.0+0/gems/stackprof-0.2.25/ext/stackprof/stackprof.c:722
/lib/x86_64-linux-gnu/libc.so.6(0x7f517c277520) [0x7f517c277520]
/lib/x86_64-linux-gnu/libc.so.6(0x7f517c2c6117) [0x7f517c2c6117]
/lib/x86_64-linux-gnu/libc.so.6(pthread_cond_wait+0x211) [0x7f517c2c8a41]
/usr/local/ruby/bin/ruby(rb_native_cond_wait+0xb) [0x55df5fdc75fb] /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/thread_pthread.c:214
/usr/local/ruby/bin/ruby(ractor_sched_deq) /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/thread_pthread.c:1230
/usr/local/ruby/bin/ruby(nt_start) /tmp/ruby-build/ruby-3.3.0-c1fc1a00ea9633961153451d0e927db49c1b268d/thread_pthread.c:2209
/lib/x86_64-linux-gnu/libc.so.6(0x7f517c2c9ac3) [0x7f517c2c9ac3]
from stackprof.
Yes, I think postponed jobs are likely to have the same problem. From what I can see M:N threads sets the EC to NULL at least part of the time (though I'd thought postponed jobs had a check for that happening and would delegate to the main thread/ec). I'm looking for solutions in Vernier, though likely a little help is needed upstream.
We could fairly easily make rb_profile_frames safe to call when EC is NULL, but I worry that would "work" but give inaccurate results (I'm checking what that looks like).
Out of curiosity, is this in CPU mode? I'd have somewhat expected my hack to always sample the same thread StackProf was started from in :wall
mode to avoid this. In what way is M:N enabled, using the ENV far or via using a ractor?
from stackprof.
Out of curiosity, is this in CPU mode?
Not 100% sure but I don't think so.
In what way is M:N enabled, using the ENV far or via using a ractor?
Via ENV so that it's active on the main Ractor.
I filed https://bugs.ruby-lang.org/issues/20016 and https://bugs.ruby-lang.org/issues/20017 because if even postponed job can't work, it's definitely a Ruby bug, and something to fix upstream.
from stackprof.
Related Issues (20)
- Problem with Ruby 2.7.6 and version 0.2.20 HOT 6
- Error installing with Ruby 3.1 HOT 3
- Segmentation fault on Ruby 2.7.6p219 HOT 4
- Possibility to filter certain files or classes?
- flaky test failure with ruby3.1
- Test failures on 32bit arch
- Flamegraph way too short in `wall` mode HOT 5
- Support Gecko format? HOT 2
- Weird timestamp deltas with puma HOT 2
- bug: "missed_samples" integer overflow possible HOT 1
- bug: possible state leak of `buffer_count` state between stackprof invocations HOT 2
- C99 error while compiling v0.2.25 HOT 1
- Add marker metadata feature HOT 1
- stackprof fails to build native extensions on ubuntu 22.04 and ruby 3.2.2 HOT 1
- "lines" attribute format?
- bug: state of _stackprof.last_sample_at can leak between invocations
- Add discussions tab, hide the projects tab
- ruby 3.2.2 An error occurred while installing stackprof (0.2.26), and Bundler cannot
- Test failure StackProfTest#test_raw Expected 0 to be > 0.
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from stackprof.