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gfs2: Fix memory leak when gfs2meta's fs_context is freed 

gfs2 and gfs2meta share an ->init_fs_context function which allocates an
args structure stored in fc->fs_private. gfs2 registers a ->free
function to free this memory when the fs_context is cleaned up, but
there was not one registered for gfs2meta, causing a leak.

Register a ->free function for gfs2meta. The existing gfs2_fc_free
function does what we need.

Reported-by: syzbot+c2fdfd2b783754878fb6@syzkaller.appspotmail.com
Fixes: 1f52aa08d1 ("gfs2: Convert gfs2 to fs_context")
Signed-off-by: Andrew Price <anprice@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
alistair/sunxi64-5.4-dsi
Andrew Price 2019-10-04 11:51:58 -05:00 committed by Andreas Gruenbacher
parent 7d194c2100
commit 30aecae86e
1 changed files with 1 additions and 0 deletions
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fs/gfs2/ops_fstype.c
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@ -1600,6 +1600,7 @@ static int gfs2_meta_get_tree(struct fs_context *fc)
}
static const struct fs_context_operations gfs2_meta_context_ops = {
.free = gfs2_fc_free,
.get_tree = gfs2_meta_get_tree,
};