diff options
| author | James Hogan <james.hogan@imgtec.com> | 2014-05-13 23:58:24 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 10:28:23 -0700 |
| commit | db5f7d04fd718b94f428220b2ba4d4c87f55a3a5 (patch) | |
| tree | 01782bdb036b93e724156b842d25f3691e9aa3e6 /include/linux | |
| parent | 43f0630e513566750fb51df14b54f5b4b4f3f65f (diff) | |
metag: Reduce maximum stack size to 256MB
commit d71f290b4e98a39f49f2595a13be3b4d5ce8e1f1 upstream.
Specify the maximum stack size for arches where the stack grows upward
(parisc and metag) in asm/processor.h rather than hard coding in
fs/exec.c so that metag can specify a smaller value of 256MB rather than
1GB.
This fixes a BUG on metag if the RLIMIT_STACK hard limit is increased
beyond a safe value by root. E.g. when starting a process after running
"ulimit -H -s unlimited" it will then attempt to use a stack size of the
maximum 1GB which is far too big for metag's limited user virtual
address space (stack_top is usually 0x3ffff000):
BUG: failure at fs/exec.c:589/shift_arg_pages()!
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: linux-parisc@vger.kernel.org
Cc: linux-metag@vger.kernel.org
Cc: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions