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| author | Al Viro <viro@zeniv.linux.org.uk> | 2014-06-12 00:27:11 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2014-06-12 00:28:09 -0400 |
| commit | 9c1d5284c79fea050f115eadeec1dd1758e5c630 (patch) | |
| tree | 4d16fd5aad7ff4931e985c0128c5747f23561f8a /arch/x86/kernel/ldt.c | |
| parent | 5f073850602084fbcbb987948ff3e70ae273f7d2 (diff) | |
| parent | 9f12600fe425bc28f0ccba034a77783c09c15af4 (diff) | |
| download | lwn-9c1d5284c79fea050f115eadeec1dd1758e5c630.tar.gz lwn-9c1d5284c79fea050f115eadeec1dd1758e5c630.zip | |
Merge commit '9f12600fe425bc28f0ccba034a77783c09c15af4' into for-linus
Backmerge of dcache.c changes from mainline. It's that, or complete
rebase...
Conflicts:
fs/splice.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/x86/kernel/ldt.c')
| -rw-r--r-- | arch/x86/kernel/ldt.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index af1d14a9ebda..dcbbaa165bde 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -20,6 +20,8 @@ #include <asm/mmu_context.h> #include <asm/syscalls.h> +int sysctl_ldt16 = 0; + #ifdef CONFIG_SMP static void flush_ldt(void *current_mm) { @@ -234,7 +236,7 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode) * IRET leaking the high bits of the kernel stack address. */ #ifdef CONFIG_X86_64 - if (!ldt_info.seg_32bit) { + if (!ldt_info.seg_32bit && !sysctl_ldt16) { error = -EINVAL; goto out_unlock; } |