On 2013-05-26 01:07, Ted Faber wrote:
I'm seeing a repeatable, consistent segmentation fault before the first
window appears (though firefox -ProfileManager brings up the
profile manager, but crashes when I try to actually start the browser).
I've deleted ~/.mozilla and just about everything I can think to get rid
of.
The system is a 9.1 i386 system:
FreeBSD ylum.lunabase.org 9.1-STABLE FreeBSD 9.1-STABLE #28 r250528: Sat
May 11 17:19:54 PDT 2013 r...@ylum.lunabase.org:/usr/obj/usr/src/sys/GENERIC
i386
Firefox is built under the most recent clang port. Firefox options are
all the defaults (make rmconfig).
I rebuilt all the ports from scratch within the last week.
I've attached a gdb trace from just running the firefox binary under
gdb. I'm not sure I believe it, but clues are scarce on the ground. I
can get a ktrace if it will help.
...
(gdb) info threads
19 Thread 36d0a200 (LWP 101008/StreamTrans #4) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
15 Thread 362f5600 (LWP 101652/HTML5 Parser) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
14 Thread 362c0f80 (LWP 101651/Cache I/O) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
* 13 Thread 2d8c7e00 (LWP 101017/DOM Worker) 0x282a854b in strcasecmp_l ()
from /lib/libc.so.7
11 Thread 2d8c4e80 (LWP 101007/Timer) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
10 Thread 28504c80 (LWP 101006/JS Watchdog) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
9 Thread 28504a00 (LWP 101005/firefox) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
8 Thread 28504780 (LWP 100838/JS GC Helper) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
7 Thread 28503380 (LWP 100836/Hang Monitor) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
6 Thread 28502e80 (LWP 100811/Socket Thread) 0x2826785b in poll ()
from /lib/libc.so.7
5 Thread 2d860f80 (LWP 100810/XPCOM CC) 0x281bc2d3 in pthread_kill ()
from /lib/libthr.so.3
4 Thread 28501d00 (LWP 100806/Gecko_IOThread) 0x282b030b in kevent ()
from /lib/libc.so.7
3 Thread 28501f80 (LWP 100804/firefox) 0x2826785b in poll ()
from /lib/libc.so.7
2 Thread 28501080 (LWP 100663/firefox) 0x2a4fc85b in js::StackSpace::sizeOf
() from /usr/local/lib/firefox/libxul.so
Since it seems libthr.so is involved, and a lot of thread signalling is
going on, I suspect r251047 may help here. It fixes a tricky problem
with deferred signal delivery, and it looks like this is what you are
experiencing here. Can you please do a backtrace of all threads (e.g.
"thread apply all bt") too?
Note that r251047 should apply cleanly to an up-to-date stable/9 tree,
but you will have to rebuild and reinstall libc and libthr (or just
build and install world).
-Dimitry
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