Why is this RMagick call generating a segmentation fault?
RubySinatraSegmentation FaultRmagickRuby 1.9.1Ruby Problem Overview
I've been banging my head against the wall for the better part of an hour trying to figure out what's going wrong here, and I'm sure (or rather hoping) it's something fairly obvious that I'm overlooking. I'm using Ruby 1.9.1, Sinatra 1.0, and RMagick 2.13.1. ImageMagick and RMagick are correctly installed and functional—I've successfully manipulated and saved images from irb.
The relevant part of the params array (formatting changes for the sake of readability):
{"admin_user_new_image_file"=>
{
:filename=>"freddie-on-shetland-pony.png",
:type=>"image/png",
:name=>"admin_user_new_image_file",
:tempfile=>#<File:/var/folders/a7/a7pO5jMcGLCww9XBGRvWfE+++TI/-Tmp-/RackMultipart20100514-20700-o2tkqu-0>,
:head=>"Content-Disposition: form-data; name=\"admin_user_new_image_file\"; filename=\"freddie-on-shetland-pony.png\"\r\nContent-Type: image/png\r\n"
}
}
The relevant code:
post "/admin/user/:account_name/image/new/" do
if params[:admin_user_new_image_file][:tempfile]
thumbnail = Magick::Image.read("png:"+params[:admin_user_new_image_file][:tempfile].path).first
end
end
The error (line 229 is the line starting with "thumbnail = ":
config.ru:229: [BUG] Segmentation fault
ruby 1.9.1p376 (2009-12-07 revision 26041) [i386-darwin10.3.0]
-- control frame ----------
c:0042 p:---- s:0196 b:0196 l:000195 d:000195 CFUNC :read
c:0041 p:0121 s:0192 b:0192 l:001ab8 d:000191 LAMBDA config.ru:229
c:0040 p:---- s:0189 b:0189 l:000188 d:000188 FINISH
c:0039 p:---- s:0187 b:0187 l:000186 d:000186 CFUNC :call
c:0038 p:0018 s:0184 b:0184 l:001d78 d:000183 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865
c:0037 p:---- s:0182 b:0182 l:000181 d:000181 FINISH
c:0036 p:---- s:0180 b:0180 l:000179 d:000179 CFUNC :instance_eval
c:0035 p:0016 s:0177 b:0175 l:000174 d:000174 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521
c:0034 p:0024 s:0171 b:0171 l:000148 d:000170 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:500
c:0033 p:---- s:0169 b:0169 l:000168 d:000168 FINISH
c:0032 p:---- s:0167 b:0167 l:000166 d:000166 CFUNC :catch
c:0031 p:0140 s:0163 b:0163 l:000148 d:000162 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497
c:0030 p:---- s:0154 b:0154 l:000153 d:000153 FINISH
c:0029 p:---- s:0152 b:0152 l:000151 d:000151 CFUNC :each
c:0028 p:0073 s:0149 b:0149 l:000148 d:000148 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476
c:0027 p:0076 s:0141 b:0141 l:000140 d:000140 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:601
c:0026 p:0009 s:0137 b:0137 l:000138 d:000136 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411
c:0025 p:---- s:0135 b:0135 l:000134 d:000134 FINISH
c:0024 p:---- s:0133 b:0133 l:000132 d:000132 CFUNC :instance_eval
c:0023 p:0012 s:0130 b:0130 l:000121 d:000129 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566
c:0022 p:---- s:0128 b:0128 l:000127 d:000127 FINISH
c:0021 p:---- s:0126 b:0126 l:000125 d:000125 CFUNC :catch
c:0020 p:0013 s:0122 b:0122 l:000121 d:000121 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566
c:0019 p:0098 s:0115 b:0115 l:000138 d:000138 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411
c:0018 p:0019 s:0108 b:0108 l:000107 d:000107 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:399
c:0017 p:0014 s:0104 b:0104 l:000103 d:000103 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24
c:0016 p:0150 s:0098 b:0098 l:000097 d:000097 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/methodoverride.rb:24
c:0015 p:0031 s:0092 b:0092 l:000091 d:000091 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18
c:0014 p:0018 s:0084 b:0084 l:002080 d:000083 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979
c:0013 p:0032 s:0082 b:0082 l:000081 d:000081 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:1005
c:0012 p:0011 s:0078 b:0078 l:002080 d:002080 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979
c:0011 p:0100 s:0074 b:0074 l:000ff0 d:000ff0 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:47
c:0010 p:0022 s:0068 b:0068 l:000067 d:000067 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:35
c:0009 p:0014 s:0064 b:0064 l:000063 d:000063 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24
c:0008 p:0031 s:0058 b:0058 l:000057 d:000057 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18
c:0007 p:0014 s:0050 b:0050 l:000049 d:000049 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/content_length.rb:13
c:0006 p:0320 s:0042 b:0042 l:000041 d:000041 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/handler/webrick.rb:48
c:0005 p:0256 s:0030 b:0030 l:000029 d:000029 METHOD /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111
c:0004 p:0382 s:0020 b:0020 l:000019 d:000019 METHOD /usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70
c:0003 p:0123 s:0009 b:0009 l:000bc8 d:000008 BLOCK /usr/local/lib/ruby/1.9.1/webrick/server.rb:183
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:---- s:0002 b:0002 l:000001 d:000001 TOP
---------------------------
-- Ruby level backtrace information-----------------------------------------
config.ru:229:in `read'
config.ru:229:in `block (2 levels) in <main>'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:865:in `block in route'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `instance_eval'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:521:in `route_eval'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:500:in `block (2 levels) in route!'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `catch'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:497:in `block in route!'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:476:in `route!'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:601:in `dispatch!'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `block in call!'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `instance_eval'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `block in invoke'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `catch'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:566:in `invoke'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:411:in `call!'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:399:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/methodoverride.rb:24:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `block in call'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:1005:in `synchronize'
/usr/local/lib/ruby/gems/1.9.1/gems/sinatra-1.0/lib/sinatra/base.rb:979:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:47:in `_call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/lint.rb:35:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/showexceptions.rb:24:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/commonlogger.rb:18:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/content_length.rb:13:in `call'
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.1.0/lib/rack/handler/webrick.rb:48:in `service'
/usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
/usr/local/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
/usr/local/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'
-- C level backtrace information -------------------------------------------
0x10010cd8d 0 libruby.dylib 0x000000010010cd8d rb_vm_bugreport + 77
0x10002b184 1 libruby.dylib 0x000000010002b184 report_bug + 260
0x10002b318 2 libruby.dylib 0x000000010002b318 rb_bug + 200
0x1000b7124 3 libruby.dylib 0x00000001000b7124 sigsegv + 132
0x7fff8301c80a 4 libSystem.B.dylib 0x00007fff8301c80a _sigtramp + 26
0x1032313ac 5 libMagickCore.3.dylib 0x00000001032313ac Splay + 300
0x103119245 6 libMagickCore.3.dylib 0x0000000103119245 AcquirePixelCache + 325
0x1031cb317 7 libMagickCore.3.dylib 0x00000001031cb317 AcquireImage + 375
0x10333035b 8 libMagickCore.3.dylib 0x000000010333035b ReadPNGImage + 155
0x1031418fd 9 libMagickCore.3.dylib 0x00000001031418fd ReadImage + 2221
0x101f1b72b 10 RMagick2.bundle 0x0000000101f1b72b rd_image + 339
0x101f1b59b 11 RMagick2.bundle 0x0000000101f1b59b Image_read + 36
0x1000fd0e4 12 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340
0x1000fe9b0 13 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896
0x1000ff8fc 14 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180
0x100104b93 15 libruby.dylib 0x0000000100104b93 vm_exec + 1203
0x100106643 16 libruby.dylib 0x0000000100106643 rb_vm_invoke_proc + 691
0x100106ccd 17 libruby.dylib 0x0000000100106ccd vm_call0 + 1085
0x1000317c6 18 libruby.dylib 0x00000001000317c6 rb_method_call + 406
0x1000fd0e4 19 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340
0x1000fe9b0 20 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896
0x1000ff8fc 21 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180
0x100104b93 22 libruby.dylib 0x0000000100104b93 vm_exec + 1203
0x100105ce6 23 libruby.dylib 0x0000000100105ce6 yield_under + 710
0x100106188 24 libruby.dylib 0x0000000100106188 specific_eval + 72
0x1000fd0e4 25 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340
0x1000fe9b0 26 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896
0x1000ff8fc 27 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180
0x100104b93 28 libruby.dylib 0x0000000100104b93 vm_exec + 1203
0x10010b6bf 29 libruby.dylib 0x000000010010b6bf rb_f_catch + 639
0x1000fd0e4 30 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340
0x1000fe9b0 31 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896
0x1000ff8fc 32 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180
0x100104b93 33 libruby.dylib 0x0000000100104b93 vm_exec + 1203
0x10010aac9 34 libruby.dylib 0x000000010010aac9 rb_yield + 505
0x100007902 35 libruby.dylib 0x0000000100007902 rb_ary_each + 82
0x1000fd0e4 36 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340
0x1000fe9b0 37 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896
0x1000ff8fc 38 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180
0x100104b93 39 libruby.dylib 0x0000000100104b93 vm_exec + 1203
0x100105ce6 40 libruby.dylib 0x0000000100105ce6 yield_under + 710
0x100106188 41 libruby.dylib 0x0000000100106188 specific_eval + 72
0x1000fd0e4 42 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340
0x1000fe9b0 43 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896
0x1000ff8fc 44 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180
0x100104b93 45 libruby.dylib 0x0000000100104b93 vm_exec + 1203
0x10010b6bf 46 libruby.dylib 0x000000010010b6bf rb_f_catch + 639
0x1000fd0e4 47 libruby.dylib 0x00000001000fd0e4 vm_call_cfunc + 340
0x1000fe9b0 48 libruby.dylib 0x00000001000fe9b0 vm_call_method + 896
0x1000ff8fc 49 libruby.dylib 0x00000001000ff8fc vm_exec_core + 3180
0x100104b93 50 libruby.dylib 0x0000000100104b93 vm_exec + 1203
0x100106643 51 libruby.dylib 0x0000000100106643 rb_vm_invoke_proc + 691
0x100111803 52 libruby.dylib 0x0000000100111803 thread_start_func_2 + 835
0x100111921 53 libruby.dylib 0x0000000100111921 thread_start_func_1 + 17
0x7fff82ff58b6 54 libSystem.B.dylib 0x00007fff82ff58b6 _pthread_start + 331
0x7fff82ff5769 55 libSystem.B.dylib 0x00007fff82ff5769 thread_start + 13
[NOTE]
You may encounter a bug of Ruby interpreter. Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html
Abort trap
Anyone have any idea what's going on? Thanks!
Ruby Solutions
Solution 1 - Ruby
To expand on Matthew Savage's comment, do this:
brew install imagemagick --disable-openmp
and it starts working again. No need to edit the files. (I'm not sure if thats what he's actually saying or if he's saying remove the flag, but the above homebrew command works for me on OSX 10.6)
If you already have imagemagick installed then
brew uninstall imagemagick && brew install imagemagick --disable-openmp
brew upgrade -f no longer reinstalls, so you have to uninstall it first.)
Solution 2 - Ruby
I was having a very similar problem on OS X 10.6.7 running Ruby 1.9.2p180.
To expand on Ash Berlin's comment, if you are using the homebrew package manager, you need to uninstall the imagemagick package and also remove the cache as well, before it will work.
Uninstall imagemagick:
brew remove imagemagick
Delete the cache:
rm -rf `brew --cache imagemagick`
Then re-install the package with this flag:
brew install -f imagemagick --disable-openmp
Solution 3 - Ruby
For those using MacPorts, ImageMagick 6.6.5 and Ruby 1.9.2.
port uninstall ImageMagickport edit ImageMagick- Add
--disable-openmptoconfigure.args(near line 100) port install ImageMagick- Remove, then reinstall rmagick
Worked for me :)
Solution 4 - Ruby
i had a similar problem using rails 3 with carrierwave on os x 10.6 and ruby 1.9.2, also crashed in a call to read everytime an image needed to be resized. doing:
brew uninstall imagemagick
brew install imagemagick --disable-openmp
solved the problem for me.
Solution 5 - Ruby
The crash may be due to accessing ImageMagick on a thread under OSX MacPorts. See post.
Solution 6 - Ruby
Not an answer, just my experiences:
I also stumbled on this problem in one of my own projects. I have this problem on os x (snow leopard) using ruby-1.9.2-p0, and ruby-1.9.2-p136.
What was particularly confusing to me was that I can read in an image using rmagick via rails console. But when I hit the exact same line from my rails app it blows up the same way as outlined above.
Rebuilding imagemagick via homebrew as outlined above wasn't enough for me. I also had to delete the rmagick gem and rebuild it via bundle.
Solution 7 - Ruby
If you have already installed imagemagick with brew, use this:
brew upgrade -f imagemagick --disable-openmp
Solution 8 - Ruby
UPDATE: This isn't really a true answer per se (I'm still seeing the same problem in MRI 1.9.1), but I used RVM to get my MRI 1.8.7 installation and gems up to date and tried running it, and everything works perfectly. I assume the problem is that RMagick isn't yet quite compatible with 1.9.1 yet, though the documentation does specifically mention Ruby 1.9 support.
Solution 9 - Ruby
Saw the same problem after upgrading ImageMagick on a Linux box. There are some more notes here. I suspect some mismatch of ImageMagick libraries and linked ruby gems (which is in agreement with all the previous comments. Check out this similar thread at rubyforge. http://rubyforge.org/forum/forum.php?thread_id=48036&forum_id=33
My solution was to dump RMagick in favor of MojoMagick - a very lean ruby API which doesn't link to ImageMagick libraries but simply uses the console binaries.
It's available here : www.misuse.org/science/2008/01/30/mojomagick-ruby-image-library-for-imagemagick/
I've built a gem and added resize to fill with crop functionality which is available on github https://github.com/bunnymatic/mojo_magick
Solution 10 - Ruby
I tried CaptainPete's MacPorts solution. It built 6.6.6-0 and still had the same problem. Switching to brew to do the build did the trick. Note that brew built 6.6.4-5. It's possible there are multiple bugs or a new bug in 6.6.6 that causes similar problems to occur.
Solution 11 - Ruby
None of these answers fixed it in my case.
After investigating further, I found that I was calling .resample on a 0.02dpi image (I pull the images from a 3rd party API so I had no idea). This was even prompting a "disk almost full" alert message after the segmentation fault error would show up.
Solution 12 - Ruby
I solved the same error (after many trials) by moving the 'gem "pg"' line in the gemfile below the fog gem, had something to do with loading dependencies I think.