From: lionel.perrin@... Date: 2020-12-09T15:34:56+00:00 Subject: [ruby-core:101343] [Ruby master Bug#17382] Segfault in String#inspect Issue #17382 has been reported by lionelperrin (Lionel Perrin). ---------------------------------------- Bug #17382: Segfault in String#inspect https://bugs.ruby-lang.org/issues/17382 * Author: lionelperrin (Lionel Perrin) * Status: Open * Priority: Normal * ruby -v: ruby 2.7.2p137 (2020-10-01 revision 5445e04352) [x86_64-linux] * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN ---------------------------------------- Hello, We experienced a segfault in our application. It seems that it happened right after we've upgraded from ruby 2.6 to ruby 2.7.2. The faulting ruby code is actionpack-6.0.3.4/lib/action_controller/log_subscriber.rb:16: ``` ruby info " Parameters: #{params.inspect}" unless params.empty? ``` However, the problem seems to be due to string.c:10702 Here is an extract of the output from ruby (full output attached): ``` shell -- Control frame information ----------------------------------------------- c:0073 p:---- s:0500 e:000499 CFUNC :inspect c:0072 p:---- s:0497 e:000496 CFUNC :inspect c:0071 p:0137 s:0493 e:000490 METHOD /usr/app/rubygems/ruby/2.7.0/gems/actionpack-6.0.3.4/lib/action_controller/log_subscriber.rb:16 c:0070 p:0038 s:0483 e:000482 METHOD /usr/app/rubygems/ruby/2.7.0/gems/activesupport-6.0.3.4/lib/active_support/subscriber.rb:145 ... -- Ruby level backtrace information ---------------------------------------- /usr/app/rubygems/ruby/2.7.0/gems/puma-5.0.4/lib/puma/thread_pool.rb:145:in `block in spawn_thread' /usr/app/rubygems/ruby/2.7.0/gems/puma-5.0.4/lib/puma/server.rb:430:in `process_client' /usr/app/rubygems/ruby/2.7.0/gems/puma-5.0.4/lib/puma/request.rb:75:in `handle_request' ... -- Machine register context ------------------------------------------------ RIP: 0x00007fd7ab8b0f5c RBP: 0x00007fd7844b92c8 RSP: 0x00007fd7a4af7fe0 RAX: 0x00005597fb1672c0 RBX: 0x0000000000000000 RCX: 0x00007fd7ab8b1060 RDX: 0x0000000000000000 RDI: 0x0000000000000000 RSI: 0x0000000000000000 R8: 0x00007fd7a4bf8d50 R9: 0x00005597ffce6378 R10: 0x0000000055550083 R11: 0x0000000000000000 R12: 0x0000000000000000 R13: 0x00005597fb1b0038 R14: 0x00005597fb1672c0 R15: 0x0000000000000000 EFL: 0x0000000000010206 -- C level backtrace information ------------------------------------------- /usr/local/lib/libruby.so.2.7(rb_vm_bugreport+0x555) [0x7fd7ab9176f5] vm_dump.c:755 [0x7fd7ab756427] /usr/local/lib/libruby.so.2.7(sigsegv+0x4b) [0x7fd7ab88311b] signal.c:946 /lib/x86_64-linux-gnu/libpthread.so.0(__restore_rt+0x0) [0x7fd7ab45f730] /usr/local/lib/libruby.so.2.7(rb_str_symname_p+0x1c) [0x7fd7ab8b0f5c] string.c:10702 /usr/local/lib/libruby.so.2.7(sym_inspect+0x1a) [0x7fd7ab8b107a] string.c:10761 [0x7fd7ab909271] /usr/local/lib/libruby.so.2.7(rb_funcallv_with_cc+0x118) [0x7fd7ab90bb68] vm_eval.c:1013 ``` ---Files-------------------------------- ruby_segfault_log.txt (86.2 KB) -- https://bugs.ruby-lang.org/ Unsubscribe: