On Mon, Sep 14, 2020 at 10:49:57AM -0500, Jeffrey Mitchell wrote: > nfs_readdir_page_filler() iterates over entries in a directory, reusing > the same security label buffer, but does not reset the buffer's length. > This causes decode_attr_security_label() to return -ERANGE if an entry's > security label is longer than the previous one's. This error, in > nfs4_decode_dirent(), only gets passed up as -EAGAIN, which causes another > failed attempt to copy into the buffer. The second error is ignored and > the remaining entries do not show up in ls, specifically the getdents64() > syscall. > > Reproduce by creating multiple files in NFS and giving one of the later > files a longer security label. ls will not see that file nor any that are > added afterwards, though they will exist on the backend.
Please include these paragraphs in the changelog. --b. > > - Jeffrey > > Jeffrey Mitchell (1): > nfs: Fix security label length not being reset > > fs/nfs/dir.c | 3 +++ > 1 file changed, 3 insertions(+) > > -- > 2.25.1
