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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-09-07 18:22:28 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-09-09 17:28:47 +0100 |
| commit | 8404663f81d212918ff85f493649a7991209fa04 (patch) | |
| tree | b695686fd2764914da245ef31649b1deb91ddafa /arch/arm/lib/copy_from_user.S | |
| parent | 2b2040af0b64cd93e5d4df2494c4486cf604090d (diff) | |
| download | linux-8404663f81d212918ff85f493649a7991209fa04.tar.gz linux-8404663f81d212918ff85f493649a7991209fa04.tar.bz2 linux-8404663f81d212918ff85f493649a7991209fa04.zip | |
ARM: 7527/1: uaccess: explicitly check __user pointer when !CPU_USE_DOMAINS
The {get,put}_user macros don't perform range checking on the provided
__user address when !CPU_HAS_DOMAINS.
This patch reworks the out-of-line assembly accessors to check the user
address against a specified limit, returning -EFAULT if is is out of
range.
[will: changed get_user register allocation to match put_user]
[rmk: fixed building on older ARM architectures]
Reported-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/lib/copy_from_user.S')
0 files changed, 0 insertions, 0 deletions