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

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On Fri, Jan 26, 2024 at 10:31:41PM +0300, kovalev@xxxxxxxxxxxx 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@xxxxxxxxxxxxx/
> 
> 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




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