staging: erofs: fix an error handling in erofs_readdir()
Richard observed a forever loop of erofs_read_raw_page() [1] which can be generated by forcely setting ->u.i_blkaddr to 0xdeadbeef (as my understanding block layer can handle access beyond end of device correctly). After digging into that, it seems the problem is highly related with directories and then I found the root cause is an improper error handling in erofs_readdir(). Let's fix it now. [1] https://lore.kernel.org/r/1163995781.68824.1566084358245.JavaMail.zimbra@nod.at/Reported-by: NRichard Weinberger <richard@nod.at> Fixes: 3aa8ec71 ("staging: erofs: add directory operations") Cc: <stable@vger.kernel.org> # 4.19+ Reviewed-by: NChao Yu <yuchao0@huawei.com> Signed-off-by: NGao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190818125457.25906-1-hsiangkao@aol.comSigned-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
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