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| author | Dmitry Safonov <dsafonov@virtuozzo.com> | 2016-09-05 16:33:03 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-09-14 21:28:08 +0200 |
| commit | e38447ee1f487eaccdbef4a61dc064f4ae94e2fa (patch) | |
| tree | 2ae3bbee91a141530c1787d74cc683b5e7fab678 /arch/x86/entry | |
| parent | 9395452b4aab7bc2475ef8935b4a4fb99d778d70 (diff) | |
| download | linux-e38447ee1f487eaccdbef4a61dc064f4ae94e2fa.tar.bz2 | |
x86/vdso: Unmap vdso blob on vvar mapping failure
If remapping of vDSO blob failed on vvar mapping,
we need to unmap previously mapped vDSO blob.
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: 0x7f454c46@gmail.com
Cc: oleg@redhat.com
Cc: linux-mm@kvack.org
Cc: gorcunov@openvz.org
Cc: xemul@virtuozzo.com
Link: http://lkml.kernel.org/r/20160905133308.28234-2-dsafonov@virtuozzo.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/entry')
| -rw-r--r-- | arch/x86/entry/vdso/vma.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c index f840766659a8..3bab6ba3ffc5 100644 --- a/arch/x86/entry/vdso/vma.c +++ b/arch/x86/entry/vdso/vma.c @@ -238,12 +238,14 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr) if (IS_ERR(vma)) { ret = PTR_ERR(vma); - goto up_fail; + do_munmap(mm, text_start, image->size); } up_fail: - if (ret) + if (ret) { current->mm->context.vdso = NULL; + current->mm->context.vdso_image = NULL; + } up_write(&mm->mmap_sem); return ret; |