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From: Kari Argillander <kari.argillander@gmail.com>
To: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>,
	Mohammad Rasim <mohammad.rasim96@gmail.com>
Cc: ntfs3@lists.linux.dev, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH] fs/ntfs3: Check for NULL if ATTR_EA_INFO is incorrect
Date: Sun, 3 Oct 2021 20:50:36 +0300	[thread overview]
Message-ID: <20211003175036.ly4m3lw2bjoippsh@kari-VirtualBox> (raw)
In-Reply-To: <227c13e3-5a22-0cba-41eb-fcaf41940711@paragon-software.com>

On Wed, Sep 29, 2021 at 07:35:43PM +0300, Konstantin Komarov wrote:
> This can be reason for reported panic.
> Fixes: 4342306f0f0d ("fs/ntfs3: Add file operations and implementation")

I see that you have include this to devel branch but you did not send V2
[1]. I also included Mohammad Rasim to this thread. Maybe they can test
this patch. Rasim can you test [2] if your problem will be fixed with
this tree. Or just test this patch if you prefer that way.

[1]: github.com/Paragon-Software-Group/linux-ntfs3/commit/35afb70dcfe4eb445060dd955e5b67d962869ce5
[2]: github.com/Paragon-Software-Group/linux-ntfs3/tree/devel

> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
> ---
>  fs/ntfs3/frecord.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/ntfs3/frecord.c b/fs/ntfs3/frecord.c
> index 9a53f809576d..007602badd90 100644
> --- a/fs/ntfs3/frecord.c
> +++ b/fs/ntfs3/frecord.c
> @@ -3080,7 +3080,9 @@ static bool ni_update_parent(struct ntfs_inode *ni, struct NTFS_DUP_INFO *dup,
>                         const struct EA_INFO *info;
>  
>                         info = resident_data_ex(attr, sizeof(struct EA_INFO));
> -                       dup->ea_size = info->size_pack;
> +                       /* If ATTR_EA_INFO exists 'info' can't be NULL. */
> +                       if (info)
> +                               dup->ea_size = info->size_pack;
>                 }
>         }
>  
> -- 
> 2.33.0
> 

  parent reply	other threads:[~2021-10-03 17:50 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-29 16:35 Konstantin Komarov
2021-09-29 17:44 ` Kari Argillander
2021-10-03 17:50 ` Kari Argillander [this message]
2021-10-04 20:39   ` Mohammad Rasim
2021-10-06 14:47     ` Konstantin Komarov
2021-10-06 17:42       ` Mohammad Rasim
2021-10-11 16:55         ` Konstantin Komarov
2021-10-11 20:56           ` Mohammad Rasim
2021-10-06 14:51   ` Konstantin Komarov

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