rasterizer hangs forever

[ffeast]

1. $ cat package.json

{
"name": "screenshot-as-a-service",
"description": "Website screenshot service powered by node.js and phantomjs",
"version": "1.1.0",
"repository": "https://github.com/fzaninotto/screenshot-as-a-service",
"engines": {
"node": ">=0.8.4"
},
"dependencies": {
"express": "3.x",
"config": "0.4.15",
"request": "2.9.153"
}
}

1. /node_modules/phantomjs/bin/phantomjs --version
   1.9.8

2. ps 25756

   PID TTY STAT TIME COMMAND
   25756 ? Rl 13941:31 /home/thumbnailer/screenshot-as-a-service/node_modules/phantomjs/lib/phantom/bin/phantomjs scripts/rasterizer.js /home/thumbnailer/cache/ 3001 1024x600

3. strace -p 25756
   These snippets cycled
   …
   gettimeofday({1452852831, 5280}, NULL) = 0
   gettimeofday({1452852831, 5482}, NULL) = 0
   gettimeofday({1452852831, 7324}, NULL) = 0
   gettimeofday({1452852831, 7524}, NULL) = 0
   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f20ef601000
   mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f20ef5ff000
   munmap(0x7f2086b99000, 4096) = 0
   mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f20ea039000
   munmap(0x7f20ef5ff000, 8192) = 0
   mmap(NULL, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f2086ba9000
   munmap(0x7f20ea039000, 16384) = 0
   mmap(NULL, 65536, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x7f2086b99000
   munmap(0x7f2086ba9000, 32768) = 0
   munmap(0x7f2086b9a000, 61440) = 0
   munmap(0x7f20ef601000, 8192) = 0
   munmap(0x7f2086ba9000, 32768) = 0
   munmap(0x7f2086b9a000, 61440) = 0
   munmap(0x7f20ef601000, 8192) = 0
   gettimeofday({1452852831, 52296}, NULL) = 0
   gettimeofday({1452852831, 54358}, NULL) = 0
   gettimeofday({1452852831, 54600}, NULL) = 0
   gettimeofday({1452852831, 56494}, NULL) = 0
   gettimeofday({1452852831, 56705}, NULL) = 0
   gettimeofday({1452852831, 58602}, NULL) = 0
   gettimeofday({1452852831, 58810}, NULL) = 0
   gettimeofday({1452852831, 60763}, NULL) = 0
   gettimeofday({1452852831, 60983}, NULL) = 0
   gettimeofday({1452852831, 62877}, NULL) = 0
   gettimeofday({1452852831, 63193}, NULL) = 0
   gettimeofday({1452852831, 65047}, NULL) = 0

…