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vdso: use correct offsets to remap vdso and vvar mappings

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In the current version, the offsets of remapping vvar and vdso regions
are mixed up.

If vdso is before vvar, vvar has to be mapped with the vdso_size offset.
if vvar is before vdso, vdso has to be mapped with the vvar_size offset.

Signed-off-by: Andrei Vagin <avagin@gmail.com>
This commit is contained in:
Andrei Vagin 2020-02-04 23:13:43 -08:00
parent f1714ccce7
commit 9bc9366c94
1 changed files with 2 additions and 2 deletions
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4
criu/pie/parasite-vdso.c
View file

@ -119,9 +119,9 @@ int vdso_do_park(struct vdso_maps *rt, unsigned long addr, unsigned long space)
BUG_ON((vdso_size + vvar_size) < space);
if (rt->sym.vdso_before_vvar)
return park_at(rt, addr, addr + vvar_size);
return park_at(rt, addr, addr + vdso_size);
else
return park_at(rt, addr + vdso_size, addr);
return park_at(rt, addr + vvar_size, addr);
}
#ifndef CONFIG_COMPAT