New submission from Yu Yuwei <acev...@gmail.com>: I'm on Gentoo Linux with glibc-2.9_20081201-r2, python-2.6.2, e2fsprogs-libs-1.41.3-r1 When Emesene send offline message to another msn user, it call uuid4() in uuid module in python, which call get_random_fd() in gen_uuid.c(e2fsprogs-libs). After this, the program got signal SIGSEGV.
When I used gdb attach to the python process, I got these: ########################## (gdb) c Continuing. [New Thread 0xb1c09b90 (LWP 6445)] [Thread 0xb1c09b90 (LWP 6445) exited] [New Thread 0xb1c09b90 (LWP 6446)] [New Thread 0xb118cb90 (LWP 6447)] [New Thread 0xb098bb90 (LWP 6448)] [New Thread 0xb018ab90 (LWP 6449)] [Thread 0xb018ab90 (LWP 6449) exited] [Thread 0xb098bb90 (LWP 6448) exited] [Thread 0xb1c09b90 (LWP 6446) exited] [Thread 0xb118cb90 (LWP 6447) exited] Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xb7d126c0 (LWP 6423)] 0xb6f0745e in get_random_fd () at gen_uuid.c:153 153 gen_uuid.c: No such file or directory. in gen_uuid.c ################ (gdb) bt #0 0xb6f0745e in get_random_fd () at gen_uuid.c:153 #1 0xb6f07509 in get_random_bytes (buf=0xbfe3fc70, nbytes=16) at gen_uuid.c:172 #2 0xb6f086ee in uuid__generate_random (out=0x9f62fc8 "", num=0xbfe3fcb4) at gen_uuid.c:591 #3 0xb6f08780 in uuid_generate_random (out=0x9f62fc8 "") at gen_uuid.c:607 #4 0xb666e3db in ffi_call_SYSV () from /usr/lib/python2.6/lib-dynload/_ctypes.so #5 0xb666e159 in ffi_call () from /usr/lib/python2.6/lib-dynload/_ctypes.so #6 0xb6668ebb in _CallProc () from /usr/lib/python2.6/lib-dynload/_ctypes.so #7 0xb66620eb in ?? () from /usr/lib/python2.6/lib-dynload/_ctypes.so #8 0xb6f08755 in uuid__generate_random (out=0x9f4950c "\005", num=0xa7fdb2c) at gen_uuid.c:600 #9 0xb7ed0dba in PyObject_Call () from /usr/lib/libpython2.6.so.1.0 #10 0xb7f679b0 in PyEval_EvalFrameEx () from /usr/lib/libpython2.6.so.1.0 #11 0xb7f6ae49 in PyEval_EvalFrameEx () from /usr/lib/libpython2.6.so.1.0 #12 0xb7f6ae49 in PyEval_EvalFrameEx () from /usr/lib/libpython2.6.so.1.0 #13 0xb7f6b72e in PyEval_EvalCodeEx () from /usr/lib/libpython2.6.so.1.0 #14 0xb7efb774 in ?? () from /usr/lib/libpython2.6.so.1.0 #15 0x0a23ce30 in ?? () #16 0x0a14d02c in ?? () #17 0x00000000 in ?? () ########### the line 153 in get_uuid.c is " jrand_seed[0] = getpid() ^ (tv.tv_sec & 0xFFFF);" so in gdb I type: (gdb) p jrand_seed[0] Cannot access memory at address 0x30 ####### So this cause the segfault. But I don't know why. May be related to the THREAD_LOCAL keywords : #if defined(__linux__) && defined(__NR_gettid) && defined(HAVE_JRAND48) #define DO_JRAND_MIX THREAD_LOCAL unsigned short jrand_seed[3]; #endif I try emesene with another gentoo box with same glibc and same e2fsprogs-libs, but with python-2.5, everything is fine. So this seems a bug in python-2.6. ---------- messages: 88061 nosy: acevery severity: normal status: open title: uuid.uuid4 cause segfault in emesene type: crash versions: Python 2.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue6059> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
