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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-04-19 16:17:34 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-04-19 16:17:34 (GMT) |
| commit | cf816ecb533ab96b883dfdc0db174598b5b5c4d2 (patch) | |
| tree | 1b7705db288ae2917105e624b01fdf81e0882bf1 /security/Kconfig | |
| parent | adf6d34e460387ee3e8f1e1875d52bff51212c7d (diff) | |
| parent | 15f7d677ccff6f0f5de8a1ee43a792567e9f9de9 (diff) | |
| download | linux-fsl-qoriq-cf816ecb533ab96b883dfdc0db174598b5b5c4d2.tar.xz | |
Merge branch 'merge-fixes' into devel
Diffstat (limited to 'security/Kconfig')
| -rw-r--r-- | security/Kconfig | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/security/Kconfig b/security/Kconfig index 5dfc206..49b51f9 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -113,10 +113,12 @@ config SECURITY_DEFAULT_MMAP_MIN_ADDR from userspace allocation. Keeping a user from writing to low pages can help reduce the impact of kernel NULL pointer bugs. - For most users with lots of address space a value of 65536 is - reasonable and should cause no problems. Programs which use vm86 - functionality would either need additional permissions from either - the LSM or the capabilities module or have this protection disabled. + For most ia64, ppc64 and x86 users with lots of address space + a value of 65536 is reasonable and should cause no problems. + On arm and other archs it should not be higher than 32768. + Programs which use vm86 functionality would either need additional + permissions from either the LSM or the capabilities module or have + this protection disabled. This value can be changed after boot using the /proc/sys/vm/mmap_min_addr tunable. |