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Date: Mon, 09 Dec 2013 12:21:09 -0700 From: Tim Gardner <timg@....com> To: Jeff Layton <jlayton@...hat.com> CC: linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org, linux-kernel@...r.kernel.org, Steve French <sfrench@...ba.org>, Dean Gehnert <deang@....com> Subject: Re: [PATCH 4/5 linux-next V2] cifs: fix incorrect reference count check On 12/09/2013 04:03 AM, Jeff Layton wrote: > On Sun, 8 Dec 2013 14:08:43 -0700 > Tim Gardner <timg@....com> wrote: > >> The reference count on tlink can only be decremented if >> cifs_sb_tlink(cifs_sb) was used to acquire it. That only >> happens if open_file==NULL. >> >> Cc: Steve French <sfrench@...ba.org> >> Cc: Jeff Layton <jlayton@...hat.com> >> Cc: Dean Gehnert <deang@....com> >> Signed-off-by: Tim Gardner <timg@....com> >> --- >> >> V2 - this is a new patch in the V2 series. >> >> fs/cifs/inode.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c >> index 3f710c6..e332038 100644 >> --- a/fs/cifs/inode.c >> +++ b/fs/cifs/inode.c >> @@ -2007,7 +2007,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs, >> CIFSSMBClose(xid, tcon, netfid); >> } >> } >> - if (tlink) >> + if (!open_file) >> cifs_put_tlink(tlink); >> >> set_size_out: > > > I don't see the bug here... > > The only place tlink gets set to a non-NULL value is where > cifs_sb_tlink gets called. Am I missing something? > Nope - I think you're correct. For some reason I thought tlink was set inside the 'if (openfile) {...}' clause. I'll drop this patch from the V3 series. rtg -- Tim Gardner timg@....com www.tpi.com OR 503-601-0234 x102 MT 406-443-5357 -- 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/
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