[CRIU] Restoring images with page-*.img anonymized

[Pavel Emelianov]

On 26.09.2019 18:37, Harshavardhan Unnibhavi wrote:
> Hi,
> 
> I am trying to restore images with pages*.img removed. When restore calls vdso_proxify there is a problem with the ELF headers and their associated addresses as they are not available. What should I do?

Cyrill, Dima, would you please help us on this. Briefly -- we want to
"emulate" the restoration from images with pages*.img files removed and
we hit this:

vdso: Parsing at 0x7ffca6198000 0x7ffca619a000
vdso: PT_LOAD p_vaddr: 0x0
vdso: DT_HASH: 0x120
vdso: DT_STRTAB: 0x298
vdso: DT_SYMTAB: 0x1a8
vdso: DT_STRSZ: 0x5e
vdso: DT_SYMENT: 0x18
  vdso: nbucket 0x3 nchain 0xa bucket 0x7ffca6198128 chain 0x7ffca6198134
vdso: image [vdso] 0x7ffca6198000-0x7ffca619a000 [vvar] 0x7ffca6195000-0x7ffca6198000
vdso: Runtime vdso/vvar matches dumpee, remap inplace
vdso: Remap rt-vdso 0x2c000 -> 0x7ffca6198000
vdso: Remap rt-vvar 0x29000 -> 0x7ffca6195000
vdso: Using gettimeofday() on vdso at 0x7ffca6198d40

apparently, the parsed info is taken from pages images which are missing.
Does this parsing affects anything beyond the memory contents, or can we
just skip the whole parse code for our purposes?

-- Pavel