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Bug #623
closedust crash, bus error
Start date:
08/29/2013
Due date:
% Done:
100%
Estimated time:
Description
Commit id:
UST: 0ff43c44ea52d0d833ea17f15777622ec64d1b1a
tools: 95f3c88c5b889bb3d16bb6857f137c84e06b84c2
urcu: b2f20dff3e0ce8db5f4f0067e2d8810420f16346
Problem:
A program linked with lttng-ust crashes at startup. The crash is hard to reproduce, happens very seldom.
Sessiond is started and configured, tracing started.
See backtrace below,
Program terminated with signal 7, Bus error. #0 0x0fd1f300 in wait_for_sessiond (sock_info=<optimized out>) at lttng-ust-comm.c:875 875 if (uatomic_read((int32_t *) sock_info->wait_shm_mmap) == 0) { (gdb) bt full #0 0x0fd1f300 in wait_for_sessiond (sock_info=<optimized out>) at lttng-ust-comm.c:875 ret = <optimized out> #1 ust_listener_thread (arg=0xfd50550 <local_apps>) at lttng-ust-comm.c:923 sock_info = 0xfd50550 <local_apps> sock = <optimized out> ret = <optimized out> prev_connect_failed = <optimized out> has_waited = 0 i = <optimized out> timeout = 822235928 __func__ = "ust_listener_thread" __PRETTY_FUNCTION__ = "ust_listener_thread" #2 0x0ffac84c in ?? () from /lib/libpthread.so.0 No symbol table info available. #3 0x0fe4e6f4 in clone () from /lib/libc.so.6
Reproducable:
1%
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