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January 10, 2018 09:39
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ngx_mruby SIGSEGV with the latest mruby
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| Program received signal SIGSEGV, Segmentation fault. | |
| 0x0000000000584ed5 in mrb_vm_exec (mrb=mrb@entry=0xbf3dd0, proc=<optimized out>, proc@entry=0xcb8680, pc=<optimized out>) | |
| at /home/vagrant/ngx_mruby/mruby/src/vm.c:1854 | |
| 1854 JUMP; | |
| Missing separate debuginfos, use: debuginfo-install glibc-2.17-106.el7_2.6.x86_64 nss-softokn-freebl-3.16.2.3-13.el7_1.x86_64 openssl-libs-1.0.1e-51.el7_2.5.x86_64 pcre-8.32-15.el7_2.1.x86_64 zlib-1.2.7-15.el7.x86_64 | |
| (gdb) bt | |
| #0 0x0000000000584ed5 in mrb_vm_exec (mrb=mrb@entry=0xbf3dd0, proc=<optimized out>, proc@entry=0xcb8680, pc=<optimized out>) | |
| at /home/vagrant/ngx_mruby/mruby/src/vm.c:1854 | |
| #1 0x000000000058af46 in mrb_vm_run (mrb=0xbf3dd0, proc=0xcb8680, self=..., stack_keep=<optimized out>) | |
| at /home/vagrant/ngx_mruby/mruby/src/vm.c:935 | |
| #2 0x000000000058ceee in mrb_run (mrb=<optimized out>, proc=<optimized out>, self=...) | |
| at /home/vagrant/ngx_mruby/mruby/src/vm.c:2985 | |
| #3 0x000000000054ec78 in ngx_mrb_run (r=0xde7720, state=0xbed168, code=0xcd9258, cached=1, result=0x0) | |
| at /home/vagrant/ngx_mruby/src/http/ngx_http_mruby_module.c:836 | |
| #4 0x00000000005512be in ngx_http_mruby_rewrite_inline_handler (r=0xde7720) | |
| at /home/vagrant/ngx_mruby/src/http/ngx_http_mruby_module.c:1575 | |
| #5 0x00000000004ae82e in ngx_http_core_rewrite_phase (r=0xde7720, ph=0xd63350) at src/http/ngx_http_core_module.c:905 | |
| #6 0x00000000004ae68b in ngx_http_core_run_phases (r=0xde7720) at src/http/ngx_http_core_module.c:851 | |
| #7 0x00000000004ae5f9 in ngx_http_handler (r=0xde7720) at src/http/ngx_http_core_module.c:834 | |
| #8 0x00000000004bd64a in ngx_http_process_request (r=0xde7720) at src/http/ngx_http_request.c:1948 | |
| #9 0x00000000004bbfd3 in ngx_http_process_request_headers (rev=0xbe0c10) at src/http/ngx_http_request.c:1375 | |
| #10 0x00000000004bb399 in ngx_http_process_request_line (rev=0xbe0c10) at src/http/ngx_http_request.c:1048 | |
| #11 0x00000000004b9f59 in ngx_http_wait_request_handler (rev=0xbe0c10) at src/http/ngx_http_request.c:506 | |
| #12 0x000000000049d5c7 in ngx_epoll_process_events (cycle=0xbdc530, timer=60000, flags=1) | |
| at src/event/modules/ngx_epoll_module.c:902 | |
| #13 0x000000000048c351 in ngx_process_events_and_timers (cycle=0xbdc530) at src/event/ngx_event.c:242 | |
| #14 0x0000000000499a89 in ngx_single_process_cycle (cycle=0xbdc530) at src/os/unix/ngx_process_cycle.c:309 | |
| #15 0x0000000000458040 in main (argc=1, argv=0x7fffffffe408) at src/core/nginx.c:378 | |
| (gdb) p pc | |
| $1 = <optimized out> | |
| (gdb) p *mrb->c | |
| $2 = {prev = 0x0, stack = 0xc095c0, stbase = 0xc095c0, stend = 0xc09dc0, ci = 0xc09d80, cibase = 0xc09dd0, ciend = 0xc0a7d0, | |
| rescue = 0x0, rsize = 0, ensure = 0x0, esize = 0, eidx = 0, status = MRB_FIBER_CREATED, vmexec = 0 '\000', fib = 0x0} | |
| (gdb) p *mrb->c->ci | |
| $3 = {mid = 0, proc = 0x0, stackent = 0x0, nregs = 0, ridx = 0, epos = 0, env = 0x0, pc = 0x0, err = 0x0, argc = 0, acc = 0, | |
| target_class = 0xa11} | |
| Fiberがらみだとすると、 https://github.com/mruby/mruby/issues/3789 ? |
mrb_codedump_all(mrb_state*, struct RProc*) 使うと irep のダンプが出来る。
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mruby/mruby@55431b4 で直ったっぽい。