fix of hipe crashes in gc

anthony.shipman <>
Fri Dec 3 03:45:41 CET 2010


I see that the following bug fix is in R14B. I need to stay with a R12B 
system. Would it be OK to apply the same patch to a R12B system (ie copy the 
change as in R14B)?

Are there any related bug fixes for running native code? I have already seen

>fix native code crash when calling unloaded module with on_l
>Posted: Wed Jun 30, 2010 12:32 pm


--------------------------------------------

Posted: Sat Jul 17, 2010 1:08 pm 	
Hello,

I have been experiencing crashes in the garbage collector when running erlang 
with natively compiled modules, and especially with OTP configured 
with --enable-native-libs.

This has been discussed before, including by others:
http://www.erlang.org/cgi-bin/ezmlm-cgi/4/50033
http://www.erlang.org/cgi-bin/ezmlm-cgi/4/39462
http://www.erlang.org/cgi-bin/ezmlm-cgi/2/1583

I finally got a reproduceable case and nailed the bug down. The bug was 
introduced in R12B-0, when the function erts_gc_after_bif_call was updated to 
take 4 parameters but the assembly glue code was not updated to pass proper 
values for the third and fourth parameters.

A fix is available here:

git fetch git://github.com/pguyot/otp.git pg/fix-hipe-crash-in-gc_after_bif
http://github.com/pguyot/otp/commit/c42ba9962d7e83accec797c56e5480a2d0b6281a

Please note that I only tested it on x86 and amd64 platforms.

Regards,

Paul


-- 
Anthony Shipman                 | Programming is like sex: One mistake and 
   | you're providing support for a lifetime.


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