On Oct 13, 2014, at 10:08 AM, andros@xxxxxxxxxx wrote:
> From: Andy Adamson <andros@xxxxxxxxxx>
>
> If a pgio error is caught before the nfs_pgio_header args->context is set
> with get_nfs_open_context, the context can be NULL.
It looks like all three calls to nfs_pgio_error would hit this!
The fix looks good to me.
-dros
>
> Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
> ---
> fs/nfs/inode.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
> index 141c9f4..a2b148e 100644
> --- a/fs/nfs/inode.c
> +++ b/fs/nfs/inode.c
> @@ -798,6 +798,9 @@ static void __put_nfs_open_context(struct nfs_open_context *ctx, int is_sync)
> struct inode *inode = ctx->dentry->d_inode;
> struct super_block *sb = ctx->dentry->d_sb;
>
> + if (ctx == NULL)
> + return;
> +
> if (!list_empty(&ctx->list)) {
> if (!atomic_dec_and_lock(&ctx->lock_context.count, &inode->i_lock))
> return;
> --
> 1.8.3.1
>
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