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fix: incremental on invalid container causes segfault 

counterpart of 417f346ee0 for incremental.
If md device has metadata_version="none" super_by_fd() matches
supertype=super0.
Call of load_container() dereferences null, so we have to forbid it.

Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Hawrylewicz Czarnowski, Przemyslaw 2010-12-06 06:40:40 +00:00 committed by NeilBrown
parent 9376b5aac2
commit a92b211229
1 changed files with 1 additions and 1 deletions
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2
Incremental.c
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@ -134,7 +134,7 @@ int Incremental(char *devname, int verbose, int runstop,
if (must_be_container(dfd)) {
if (!st)
st = super_by_fd(dfd, NULL);
if (st)
if (st && st->ss->load_container)
rv = st->ss->load_container(st, dfd, NULL);
close(dfd);