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Groups > linux.kernel > #1456063
| From | Jason Cooper <jason@lakedaemon.net> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v3 5/7] tile: Use simpler API for random address requests |
| Date | 2016-08-04 01:50 +0200 |
| Message-ID | <s2e5b-U8-9@gated-at.bofh.it> (permalink) |
| References | <s012p-3rN-3@gated-at.bofh.it> <s2e5b-U8-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Currently, all callers to randomize_range() set the length to 0 and
calculate end by adding a constant to the start address. We can
simplify the API to remove a bunch of needless checks and variables.
Use the new randomize_addr(start, range) call to set the requested
address.
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
---
Changes from v2:
- s/randomize_addr/randomize_page/ (Kees Cook)
arch/tile/mm/mmap.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/tile/mm/mmap.c b/arch/tile/mm/mmap.c
index 851a94e6ae58..ef61c597898b 100644
--- a/arch/tile/mm/mmap.c
+++ b/arch/tile/mm/mmap.c
@@ -88,6 +88,5 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
unsigned long arch_randomize_brk(struct mm_struct *mm)
{
- unsigned long range_end = mm->brk + 0x02000000;
- return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
+ return randomize_page(mm->brk, 0x02000000);
}
--
2.9.2
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[PATCH 0/7] char/random: Simplify random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:30 +0200
[PATCH 1/7] random: Simplify API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:30 +0200
Re: [PATCH 1/7] random: Simplify API for random address requests Yann Droneaud <ydroneaud@opteya.com> - 2016-07-29 11:00 +0200
Re: [PATCH 1/7] random: Simplify API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-29 20:30 +0200
[PATCH 5/7] tile: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:30 +0200
[PATCH 7/7] random: Remove unused randomize_range() Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:30 +0200
[PATCH 6/7] unicore32: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:30 +0200
[PATCH 4/7] arm64: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:30 +0200
Re: [PATCH 4/7] arm64: Use simpler API for random address requests Will Deacon <will.deacon@arm.com> - 2016-07-29 15:50 +0200
[PATCH 3/7] ARM: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:30 +0200
[PATCH v2 7/7] random: Remove unused randomize_range() Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
[PATCH v2 4/7] arm64: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
[PATCH v2 2/7] x86: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
[PATCH v2 5/7] tile: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
[PATCH v2 3/7] ARM: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
[PATCH v2 1/7] random: Simplify API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
Re: [PATCH v2 1/7] random: Simplify API for random address requests Kees Cook <keescook@chromium.org> - 2016-07-31 18:50 +0200
Re: [PATCH v2 1/7] random: Simplify API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-31 23:00 +0200
Re: [PATCH v2 1/7] random: Simplify API for random address requests Kees Cook <keescook@chromium.org> - 2016-08-01 21:50 +0200
Re: [PATCH v2 1/7] random: Simplify API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-02 01:20 +0200
Re: [kernel-hardening] Re: [PATCH v2 1/7] random: Simplify API for random address requests Michael Ellerman <mpe@ellerman.id.au> - 2016-08-02 05:40 +0200
Re: [kernel-hardening] Re: [PATCH v2 1/7] random: Simplify API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-03 20:50 +0200
[PATCH v2 0/7] char/random: Simplify random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
[PATCH v2 6/7] unicore32: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-07-30 17:50 +0200
[PATCH v3 2/7] x86: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
[PATCH v3 6/7] unicore32: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
[PATCH v3 5/7] tile: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
[PATCH v3 7/7] random: Remove unused randomize_range() Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
Re: [PATCH v3 7/7] random: Remove unused randomize_range() Andrew Morton <akpm@linux-foundation.org> - 2016-08-04 01:50 +0200
Re: [PATCH v3 7/7] random: Remove unused randomize_range() Jason Cooper <jason@lakedaemon.net> - 2016-08-04 02:20 +0200
[PATCH v3 0/7] char/random: Simplify random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
[PATCH v3 4/7] arm64: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
[PATCH v3 1/7] random: Simplify API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
Re: [PATCH v3 1/7] random: Simplify API for random address requests Yann Droneaud <ydroneaud@opteya.com> - 2016-08-04 14:50 +0200
[PATCH v3 3/7] ARM: Use simpler API for random address requests Jason Cooper <jason@lakedaemon.net> - 2016-08-04 01:50 +0200
Re: [PATCH v3 0/7] char/random: Simplify random address requests Kees Cook <keescook@chromium.org> - 2016-08-04 04:50 +0200
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