Hi Gaël,

On Sun, Mar 18, 2018 at 06:22:36PM -0400, Gaël PORTAY wrote:
> In __canonicalize_path() we dereference the pointer returned by
> get_fsdevice_by_path() without checking if the pointer is NULL or not.
> When the pointer is NULL it leads to an Ooops.
> 
>       Ooops, address error on load or ifetch!
> 
>       $ 0   : 00000000 00000001 a0000026 a0811c10
>       $ 4   : a0402e60 a0402e48 a0811c00 a0402e58
>       $ 8   : 00000001 00000000 0000005a 00000023
>       $12   : 00000000 00000002 00601021 00000000
>       $16   : a0402e60 a0402e50 a0402e39 a0810000
>       $20   : a0402e38 a0811420 a0811424 00000000
>       $24   : 00000000 a080de10
>       $28   : 87f87d40 a03ffa68 a0810000 a080ce30
>       Hi    : 00000002
>       Lo    : 00000000
>       epc   : a080ce34
>       ra    : a080ce30
>       Status: 00000006
>       Cause : 40008010
>       Config: 80040483
> 
>       ### ERROR ### Please RESET the board ###
> 
> Fixes: d79a81736 fs: Don't bother filesystems without link support with 
> additional stat() calls
> 
> Signed-off-by: Gaël PORTAY <[email protected]>
> ---
>  fs/fs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Applied, thanks.

I wonder though what calls into the filesystem layer before / is
mounted in your case.

Sascha


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