Commit-ID: e38447ee1f487eaccdbef4a61dc064f4ae94e2fa Gitweb: http://git.kernel.org/tip/e38447ee1f487eaccdbef4a61dc064f4ae94e2fa Author: Dmitry Safonov <[email protected]> AuthorDate: Mon, 5 Sep 2016 16:33:03 +0300 Committer: Thomas Gleixner <[email protected]> CommitDate: Wed, 14 Sep 2016 21:28:08 +0200
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 <[email protected]> Acked-by: Andy Lutomirski <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> --- arch/x86/entry/vdso/vma.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c index f840766..3bab6ba 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;
