linux-kernel - Re: Oops in NFSv4 server in 2.6.23.17

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: <20080314195303.GA4390@ics.muni.cz>
Date:	Fri, 14 Mar 2008 20:53:03 +0100
From:	Lukas Hejtmanek <xhejtman@....muni.cz>
To:	"J. Bruce Fields" <bfields@...ldses.org>
Cc:	nfsv4@...ux-nfs.org, linux-kernel@...r.kernel.org,
	Neil Brown <neilb@...e.de>
Subject: Re: Oops in NFSv4 server in 2.6.23.17

On Fri, Mar 14, 2008 at 03:33:50PM -0400, J. Bruce Fields wrote:
> OK, yes, I think so.  Could you confirm whether this fixes it?

I will test it on Monday as I cannot reboot the machine right now.

Just a quick review - isn't the cache_get() call needed also on the line 185 in
the same file?
 
> diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
> index 1eb771d..3e6b3f4 100644
> --- a/fs/nfsd/nfsfh.c
> +++ b/fs/nfsd/nfsfh.c
> @@ -232,6 +232,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
>  		fhp->fh_dentry = dentry;
>  		fhp->fh_export = exp;
>  		nfsd_nr_verified++;
> +		cache_get(&exp->h);
>  	} else {
>  		/*
>  		 * just rechecking permissions
> @@ -241,6 +242,7 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
>  		dprintk("nfsd: fh_verify - just checking\n");
>  		dentry = fhp->fh_dentry;
>  		exp = fhp->fh_export;
> +		cache_get(&exp->h);
>  		/*
>  		 * Set user creds for this exportpoint; necessary even
>  		 * in the "just checking" case because this may be a
> @@ -252,8 +254,6 @@ fh_verify(struct svc_rqst *rqstp, struct svc_fh *fhp, int type, int access)
>  		if (error)
>  			goto out;
>  	}
> -	cache_get(&exp->h);
> -
>  
>  	error = nfsd_mode_check(rqstp, dentry->d_inode->i_mode, type);
>  	if (error)

-- 
Lukáš Hejtmánek
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/