fs/binfmt_elf_fdpic.c: fix brk area overlap with stack on NOMMU

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On NOMMU archs, the FDPIC ELF loader sets up the usable brk range to
overlap with all but the last PAGE_SIZE bytes of the stack. This leads
to catastrophic memory reuse/corruption if brk is used. Fix by setting
the brk area to zero size to disable its use.

Signed-off-by: Rich Felker <dalias@libc.org>
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

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Rich Felker 2015-08-20 15:11:06 -04:00 • committed by Greg Ungerer

parent 32b88194f7

commit 4ac3131110

1 changed files with 1 additions and 6 deletions

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fs/binfmt_elf_fdpic.c

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