linux-kernel - Re: [GIT] More NFS client fixes for 2.6.24-rc6

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]

Date:	Thu, 03 Jan 2008 09:45:57 -0500
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org
Subject: Re: [GIT] More NFS client fixes for 2.6.24-rc6


On Thu, 2008-01-03 at 10:30 +0100, Ingo Molnar wrote:
> * Trond Myklebust <Trond.Myklebust@...app.com> wrote:
> 
> > commit 53478daff2c8b494d2af1ede6611f166f81bc393
> > Author: Trond Myklebust <Trond.Myklebust@...app.com>
> > Date:   Wed Jan 2 13:28:57 2008 -0500
> > 
> >     NFS: Fix a possible Oops in fs/nfs/super.c
> >     
> >     Sigh... commit 4584f520e1f773082ef44ff4f8969a5d992b16ec (NFS: Fix NFS
> >     mountpoint crossing...) had a slight flaw: server can be NULL if sget()
> >     returned an existing superblock.
> >     
> >     Fix the fix by dereferencing s->s_fs_info.
> >     
> >     Also add in the same namespace Oops fix for NFSv4 in both the mountpoint
> >     crossing case, and the referral case.
> >     
> >     Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>
> 
> shouldnt this commit have included the full credit of the bugfix:
> 
>   http://bugzilla.kernel.org/show_bug.cgi?id=9647
> 
>   ------------>
>   Description From Adrian Bunk 2007-12-27 12:36
> 
>   The Coverity checker spotted that commit
>   4584f520e1f773082ef44ff4f8969a5d992b16ec introduced the following NULL
>   dereference in 2.6.24-rc6:

Point taken, however I assume that a reference to the bugzilla report
should suffice. I've therefore updated the commit changelog to read as
follows:

    NFS: Fix a possible Oops in fs/nfs/super.c
    
    Sigh... commit 4584f520e1f773082ef44ff4f8969a5d992b16ec (NFS: Fix NFS
    mountpoint crossing...) had a slight flaw: server can be NULL if sget()
    returned an existing superblock.
    
    Fix the fix by dereferencing s->s_fs_info.
    
    Thanks to Coverity/Adrian Bunk and Frank Filz for spotting the bug.
    (See http://bugzilla.kernel.org/show_bug.cgi?id=9647)
    
    Also add in the same namespace Oops fix for NFSv4 in both the mountpoint
    crossing case, and the referral case.
    
    Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>

Cheers
  Trond
--
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/