Date: Wed, 30 Jun 2010 20:12:08 -0400 From: Alexander Kabaev <kabaev@gmail.com> To: Garrett Cooper <yanefbsd@gmail.com> Cc: "Sam Fourman Jr." <sfourman@gmail.com>, Kostik Belousov <kostikbel@gmail.com>, freebsd-hackers@freebsd.org Subject: Re: kernel patch needed for wine? Message-ID: <20100630201208.095139c0@kan.dnsalias.net> In-Reply-To: <AANLkTineENDg9MZwqJY44enyHqpfFxfVIdzS_6tG43TI@mail.gmail.com> References: <AANLkTik5Owwpk5O6eUbSKgHxpjvcEXwilGECgtX0hx5a@mail.gmail.com> <20100630105027.GJ13238@deviant.kiev.zoral.com.ua> <AANLkTikDxVGpc6LfYlqFZLo-QiJFr8lbj2MVZMUci-lI@mail.gmail.com> <AANLkTilusilVimfscZdj3QAOOFYs3Gh3pt5V6SXe3VHP@mail.gmail.com> <AANLkTinNMaMH_5TSUL8PN1D0J-IBjIZV8K_sBTeB1H64@mail.gmail.com> <AANLkTiksgnem7qiGzpJIVQp7Dxsu0dfasF10STzSwxBf@mail.gmail.com> <20100630192350.105e8303@kan.dnsalias.net> <AANLkTineENDg9MZwqJY44enyHqpfFxfVIdzS_6tG43TI@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --] On Wed, 30 Jun 2010 16:45:18 -0700 Garrett Cooper <yanefbsd@gmail.com> wrote: > > > > Now make icebp_func const and observe the program start working. The > > test case is broken as written, because icebp_func array is > > writable, so in ends up in a non-const part of .bss, which is not > > marked as executable and rightfully causes SIGSEGV when jumped to. > > Which means that Linux is broken in this regard because it's loading > data as text, not data as data and text as text? > Thanks, Nope, I think this is i386 vs. amd64 difference. NX page protection is enforced in long mode, or in 32-bit with PAE, if I remember things correctly. -- Alexander Kabaev [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.15 (FreeBSD) iD8DBQFMK91cQ6z1jMm+XZYRAtQ4AJ9ZtXAuvaeH1twnRmZRYUfKpUhEAQCgxd3d dToOaZXrnJ8+kVH/FPC/mC0= =Uob+ -----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20100630201208.095139c0>