linux-kernel - Re: [PATCH 0/2] smb: client: fix "df: Resource temporarily unavailable" on 5.10 stable kernel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <2024012613-woozy-exhume-7b9d@gregkh>
Date: Fri, 26 Jan 2024 16:49:18 -0800
From: Greg KH <greg@...ah.com>
To: kovalev@...linux.org
Cc: stable@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-cifs@...r.kernel.org,
	samba-technical@...ts.samba.org, keescook@...omium.org,
	sfrench@...ba.org, corbet@....net, natechancellor@...il.com,
	ndesaulniers@...gle.com
Subject: Re: [PATCH 0/2] smb: client: fix "df: Resource temporarily
 unavailable" on 5.10 stable kernel

On Fri, Jan 26, 2024 at 10:31:41PM +0300, kovalev@...linux.org wrote:
> After mounting a remote cifs resource, it becomes unavailable:
> df: /mnt/sambashare: Resource temporarily unavailable
> 
> It was tested on the following Linux kernels:
> Linux altlinux 5.10.208-std-def-alt1
> Linux fedora 5.10.208-200.el8.x86_64
> 
> The error appeared starting from kernel 5.10.206 after adding
> the commit [1] "smb: client: fix OOB in SMB2_query_info_init()",
> in which the buffer length increases by 1 as a result of changes:
> ...
> -      iov[0].iov_len = total_len - 1 + input_len;
> +      iov[0].iov_len = len;
> ...
> 
> [1] https://patchwork.kernel.org/project/cifs-client/patch/20231213152557.6634-2-pc@manguebit.com/
> 
> Error fixed by backported commits in next two patches  adapted for the 5.10 kernel:
> 
> [PATCH 1/2] stddef: Introduce DECLARE_FLEX_ARRAY() helper
> [PATCH 2/2] smb3: Replace smb2pdu 1-element arrays with flex-arrays
> 
> 

Now queued up, thanks.

greg k-h