diff options
| author | Stefani Seibold <stefani@seibold.net> | 2014-03-23 20:38:14 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-03-24 20:31:23 +0400 |
| commit | 645a387ecbdb4aa78c8451a66416340616134537 (patch) | |
| tree | 48a948fbd4cf3cb3d18875ea7054b93564ae0724 /arch/x86/vdso | |
| parent | 3c1b63b9e4862fb16352a0646439c2dd6d9e0e5c (diff) | |
| download | linux-645a387ecbdb4aa78c8451a66416340616134537.tar.xz | |
x86, vdso: Fix size of get_unmapped_area()
The size of the reserved memory for a 32 bit vdso must be the size of the
32 bit vDSO in pages + HPET page + VVAR page.
One page is not enough for this. Grrrr.... silly copy and paste bug,
was right in previous patch.
Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/1395592694-20571-1-git-send-email-stefani@seibold.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/vdso')
| -rw-r--r-- | arch/x86/vdso/vdso32-setup.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c index 791c1cb822c6..00348980a3a6 100644 --- a/arch/x86/vdso/vdso32-setup.c +++ b/arch/x86/vdso/vdso32-setup.c @@ -165,12 +165,14 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) down_write(&mm->mmap_sem); - addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0); + addr = get_unmapped_area(NULL, 0, vdso32_size + VDSO_OFFSET(VDSO_PREV_PAGES), 0, 0); if (IS_ERR_VALUE(addr)) { ret = addr; goto up_fail; } + addr += VDSO_OFFSET(VDSO_PREV_PAGES); + current->mm->context.vdso = (void *)addr; /* |