Messages in this thread | | | From | "Witold Baryluk" <> | Date | Tue, 31 May 2011 02:38:26 +0200 | Subject | Re: [Oops 1/2]Something wrong with copy_from_user() function - possible false positive due bug in gcc 4.6 |
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Hi.
You my wantto look here
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48880 and http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46639
It is regression in gcc 4.6
Particulry this error happens in binfmt_misc.c file. gcc 4.6 errornously print error in this file.
However I could not find such behavior nowhere in rest of kernel. But it can still be a case If you use gcc 4.6.
If you are using gcc 4.5 or older, it is probably genuine error, or someone is using a destination buffer which is unknown size and gcc cannot prove it is big enaugh to hold data.
-- Witold Baryluk [unhandled content-type:application/pgp-signature] | |