The 32 bit emulation for x86-64 has the following in
arch/x86_64/ia32/ia32_binfmt.c:
#define elf_read_implies_exec(ex, have_pt_gnu_stack) \
(!(have_pt_gnu_stack))
I guess it should be same definition as in include/asm-i386/elf.h and
include/asm-x86_64/elf.h instead:
#define elf_read_implies_exec(ex, executable_stack) \
(executable_stack != EXSTACK_DISABLE_X)
>From the usage in fs/binfmt_elf.c it looks like the semantics of that
macro changed slightly but was not fixed in all places (ia64 seems to
have a similar problem from the looks of it).
The current behavior leads to 32 bit executables not setting the
READ_IMPLIES_EXEC personality when they are marked as requiring an
executable stack (64 bit executables do however).
--
Markus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
