exofs: oops after late failure in mount

We have already set ->s_root, so ->put_super() is going to be called. Freeing ->s_fs_info is a bloody bad idea when it's going to be dereferenced very shortly... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
mariux64 · Jan 9, 2012 · da01636 · da01636
1 parent 3850aba
commit da01636
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
@@ -838,6 +838,8 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
 	ret = bdi_setup_and_register(&sbi->bdi, "exofs", BDI_CAP_MAP_COPY);
 	if (ret) {
 		EXOFS_DBGMSG("Failed to bdi_setup_and_register\n");
+		dput(sb->s_root);
+		sb->s_root = NULL;
 		goto free_sbi;
 	}