[issue18897] Illegal instruction at Python-2.7.5/Modules/_sre.c:1173

Martin Mokrejs added the comment: The issue could have been caused the malfunctioning memory or CPU. http://bugs.python.org/issue18843#msg204954 -- ___ Python tracker ___ ___

[issue18897] Illegal instruction at Python-2.7.5/Modules/_sre.c:1173

Tim Peters added the comment: Note this line in your first post: DUMA Aborting: mprotect() failed: Cannot allocate memory. Python never calls mprotect(), but DUMA() probably does. Also note what it said after that: Check README section 'MEMORY USAGE AND EXECUTION SPEED' if your (Li

[issue18897] Illegal instruction at Python-2.7.5/Modules/_sre.c:1173

Martin Mokrejs added the comment: I was actually printing every 10 seconds how much memory it was using, the last before got killed was: PIDVSZ RSS TIME ELAPSED %CPU %MEM COMMAND 4097 4938188 2445712 00:22:4425:04 90.7 15.0 /usr/bin/python2.7 /usr/bin/emerge dev-lang/pytho

[issue18897] Illegal instruction at Python-2.7.5/Modules/_sre.c:1173

Antoine Pitrou added the comment: This is a malloc() failure, not a Python bug ("DUMA Aborting: mprotect() failed: Cannot allocate memory"). Line 1173 in _sre.c allocates a fixed-sized structure (SRE_REPEAT): ctx->u.rep = (SRE_REPEAT*) PyObject_MALLOC(sizeof(*ctx->u.rep)); That st

[issue18897] Illegal instruction at Python-2.7.5/Modules/_sre.c:1173

Martin Mokrejs added the comment: To a naive user two places with numbers are in the stacktrace: size = -1282872823 and instr_ub = -1 instr_lb = 0 instr_prev = -1 -- ___ Python tracker ___

[issue18897] Illegal instruction at Python-2.7.5/Modules/_sre.c:1173

New submission from Martin Mokrejs: I was trying to use DUMA to find errors in python runtime and it indeed killed python-based utility called emerge. Let's see what you say now: # export LD_PRELOAD=/usr/lib64/libduma.so.0.0.0 # sysctl -w vm.max_map_count=100 # emerge dev-lang/python:2.7