[erofs-utils] Report two resource leak issues and submit patches

[Gao Xiang]

Hi,

On Thu, Mar 10, 2022 at 07:06:49AM +0000, 刘金宝 via Linux-erofs wrote:
> Hello,
> There are two resource leak problems and patches here.
> Problem 1: Resource leakage
> File: erofs-utils/lib/xattr.c
> Function: erofs_get_selabel_xattr
> Statement: ret = asprintf(&fspath, "/%s", erofs_fspath(srcpath));
> if (ret <= 0)
> return ERR_PTR(-ENOMEM);
> Analysis: When the asprintf function fails, it returns -1, so the judgment condition should be ret<0. Return when ret=0, the storage pointed to by fspath will be leaked
> Patch: if (ret < 0)
> 
> Problem 2: Resource leakage
> File: erofs-utils/lib/inode.c
> Function: erofs_droid_inode_fsconfig
> Statement: if (asprintf(&decorated, "%s/%s", cfg.mount_point, erofs_fspath(path)) <= 0)
> return -ENOMEM;
> Analysis: When the asprintf function fails, it returns -1, so the judgment condition should be ret<0. Return when asprintf(&decorated, "%s/%s", cfg.mount_point, erofs_fspath(path)) = 0, the storage pointed to by decorated will be leaked
> Patch: if (asprintf(&decorated, "%s/%s", cfg.mount_point, erofs_fspath(path)) < 0)
> 

Thanks for the report!

Since you already have solutions, would you mind submitting
2 independent patches for these?

Thanks,
Gao Xiang

> Thank you!
> Jinbao Liu
> 
> 
> 
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