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migration/ram: add additional check

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If a migration stream is broken, the address and flag reading can return
zero. Thus, an irrelevant flag error will be returned instead of EIO.
It can be fixed by additional check after the reading.

Signed-off-by: Maksim Davydov <davydov-max@yandex-team.ru>
Link: https://lore.kernel.org/r/20240304144203.158477-1-davydov-max@yandex-team.ru
Signed-off-by: Peter Xu <peterx@redhat.com>
This commit is contained in:
Maksim Davydov 2024-03-04 17:42:03 +03:00 • committed by Peter Xu
parent ff64e0ba81
commit 12ab1e4fe8
1 changed files with 6 additions and 0 deletions
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6
migration/ram.c
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@ -4214,6 +4214,12 @@ static int ram_load_precopy(QEMUFile *f)
i++;
addr = qemu_get_be64(f);
ret = qemu_file_get_error(f);
if (ret) {
error_report("Getting RAM address failed");
break;
}
flags = addr & ~TARGET_PAGE_MASK;
addr &= TARGET_PAGE_MASK;