我有一个带有apache（2.4.7）+乘客（5.0.0.beta2）+rails（4.2.0）+蜻蜓（1.0.7）的ubuntu服务器
该站点运行正常，但是当我上传图像时，服务器发送了 500 错误。有时允许我上传一张图片，第二张发送 500，有时当我尝试上传第三张图片时会出现错误。（图片大小在100KB和700KB左右）
在 production.log 中没有错误。但是在 apache error.log 我有很多信息，但没有什么可以帮助我，也许你们中的一个人可以理解日志：
[ pid=25856, timestamp=1422360930 ] Process aborted! signo=SIGSEGV(11), reason=SEGV_MAPERR, si_addr=0x10, randomSeed=1422360655
[ pid=25856 ] Crash log dumped to /var/tmp/passenger-crash-log.1422360930
[ pid=25856 ] Date, uname and ulimits:
Tue Jan 27 07:15:30 EST 2015
Linux 3.13.0-042stab094.8 #1 SMP Tue Dec 16 20:36:56 MSK 2014 x86_64 x86_64
time(seconds) unlimited
file(blocks) unlimited
data(kbytes) unlimited
stack(kbytes) 10240
coredump(blocks) 0
memory(kbytes) unlimited
locked memory(kbytes) 64
process 1029939
nofiles 8192
vmemory(kbytes) unlimited
locks unlimited
[ pid=25856 ] Phusion Passenger version: 5.0.0.beta2
[ pid=25856 ] libc backtrace available!
--------------------------------------
[ pid=25856 ] Backtrace with 23 frames:
Using backtrace sanitizer.
PassengerAgent server[0x4d08d3]
PassengerAgent server[0x4d0185]
PassengerAgent server[0x4d1483]
PassengerAgent server[0x4d213d]
/lib/x86_64-linux-gnu/libpthread.so.0(?? at ??:0; +0x10340) [0x7fb9f915c340]
PassengerAgent server[0x5013de]
PassengerAgent server[0x5050b9]
PassengerAgent server[0x6858fb]
PassengerAgent server[0x6878db]
PassengerAgent server[0x539c40]
PassengerAgent server[0x68111e]
PassengerAgent server[0x681ff8]
PassengerAgent server[0x539bc2]
PassengerAgent server[0x5c68c9]
PassengerAgent server[0x5c16ed]
PassengerAgent server[0x5bc69a]
PassengerAgent server[0x64f027]
PassengerAgent server[0x4cec46]
PassengerAgent server[0x4ce831]
PassengerAgent server[0x4ce01c]
PassengerAgent server[0x6226b9]
/lib/x86_64-linux-gnu/libpthread.so.0(?? at ??:0; +0x8182) [0x7fb9f9154182]
/lib/x86_64-linux-gnu/libc.so.6(?? at ??:0; clone+0x6d) [0x7fb9f845900d]
--------------------------------------
[ pid=25856 ] Dumping additional diagnostical information...
--------------------------------------
### Backtraces
Thread 'Main thread' (0x7fb9f99ef7c0, LWP 25856):
in 'void waitForExitEvent()' (Main.cpp:778)
in 'void mainLoop()' (Main.cpp:671)
in 'int runServer()' (Main.cpp:893)
Thread 'Pool analytics collector' (0x7fb9f99ed700, LWP 25856):
in 'static void
Passenger::ApplicationPool2::Pool::collectAnalytics(Passenger::ApplicationPool2::PoolPtr)' (Pool.h:829)
Thread 'Pool garbage collector' (0x7fb9f99ac700, LWP 25856):
in 'static void
Passenger::ApplicationPool2::Pool::garbageCollect(Passenger::ApplicationPool2::PoolPtr)' (Pool.h:684)
Thread 'Main event loop: thread 1' (0x7fb9f2a6c700, LWP 25856):
(empty)
文件还在继续......
此外，在 error.log 的末尾，我看到：
No locals.[ 2015-01-27 07:15:34.0702 12438/7f20597d2700 agents/Watchdog/AgentWatcher.cpp:96 ]: Phusion Passenger helper agent (pid=25856) crashed with signal SIGSEGV, restarting it...
[Tue Jan 27 07:15:34.077773 2015] [core:error] [pid 12483:tid 140022065903360] [client 200.71.213.222:50038] End of script output before headers: profiles, referer: http://www.xxxxxxxxxxx.com/profiles/username-something/avatar/edit
[ 2015-01-27 07:15:34.0849 26021/7f56396e37c0 agents/HelperAgent/Main.cpp:881 ]: Starting PassengerAgent server...
[ 2015-01-27 07:15:34.0852 26021/7f56396e37c0 agents/HelperAgent/Main.cpp:232 ]: PassengerAgent server running in multi-application mode.
[ 2015-01-27 07:15:34.0965 26021/7f56396e37c0 agents/HelperAgent/Main.cpp:635 ]: PassengerAgent server online, PID 26021
App 26054 stdout:
App 26071 stdout:
我该如何尝试解决这个问题？非常感谢你的帮助