Re: [PATCH RESEND 00/11] cifs: Various changes

[Pali Rohár]

On Saturday 22 August 2026 22:28:26 Namjae Jeon wrote:
> On Sat, Aug 22, 2026 at 6:47 AM Pali Rohár <pali@xxxxxxxxxx> wrote:
> >
> > Hello, could you look at other of changes in these series?
> > Steve already merged few of them and others I have rebased (cleanly) on
> > top of v7.2 release and pushed to my cifs branch:
> > https://git.kernel.org/pub/scm/linux/kernel/git/pali/linux.git/log/?h=cifs
> Okay, I will check them. BTW, Do you know why Steve only picked a few patches?

It was late -rc cycle and I wrote to Steve that all changes could wait
for next merge window.

> >
> > On Monday 06 July 2026 20:48:08 Pali Rohár wrote:
> > > This patch series contains various cifs changes which I sent year ago.
> > > All those patches are rebased on top of the 7.2-rc2 and there is no new
> > > change in them, just they are rebased for new code base.
> > >
> > > I pushed these changes also into my git branch cifs:
> > > https://git.kernel.org/pub/scm/linux/kernel/git/pali/linux.git/log/?h=cifs
> > >
> > >
> > > Note that patch "cifs: Remove cifs_backup_query_path_info() and replace
> > > it by cifs_query_path_info()" is removing these lines:
> > >
> > > -                     move_cifs_info_to_smb2(&data->fi, fi);
> > > -                     fdi = (FILE_DIRECTORY_INFO *)fi;
> > > -                     si = (FILE_ID_FULL_DIR_INFO *)fi;
> > >
> > > And I have feeling that in this old code (which is being) removed could
> > > be a buffer overflow as it is casting between incompatible structures.
> > > I have not spent too much time with it as the code is begin removed.
> > > But maybe some AI tool could be able to confirm if this is some buffer
> > > overflow or not.
> > >
> > >
> > > Pali Rohár (11):
> > >   cifs: Fix and improve cifs_is_path_accessible() function
> > >   cifs: Remove code for querying FILE_INFO_STANDARD via
> > >     CIFSSMBQPathInfo()
> > >   cifs: Remove CIFSSMBSetPathInfoFB() fallback function
> > >   cifs: Remove cifs_backup_query_path_info() and replace it by
> > >     cifs_query_path_info()
> > >   cifs: Fix validation of EAs for WSL reparse points
> > >   cifs: Validate presence of EA $LXMOD for WSL reparse points
> > >   cifs: Check if server supports EAs before trying to set it for WSL
> > >   cifs: Extend ->set_EA() callback to allow operate on reparse point
> > >   cifs: Create native Window socket file compatible also with WSL
> > >     subsystem
> > >   cifs: Add support for parsing WSL symlinks in version 1 format
> > >   cifs: Add support for creating WSL symlinks in version 1 format
> > >
> > >  fs/smb/client/cifsglob.h   |  10 +-
> > >  fs/smb/client/cifsproto.h  |   1 +
> > >  fs/smb/client/cifssmb.c    |  79 +++--------
> > >  fs/smb/client/fs_context.c |  11 +-
> > >  fs/smb/client/fs_context.h |   3 +-
> > >  fs/smb/client/inode.c      |  98 +-------------
> > >  fs/smb/client/link.c       |   3 +-
> > >  fs/smb/client/reparse.c    | 267 ++++++++++++++++++++++++++++++++-----
> > >  fs/smb/client/smb1ops.c    |  35 +++--
> > >  fs/smb/client/smb1proto.h  |   4 +-
> > >  fs/smb/client/smb2ops.c    |   6 +-
> > >  fs/smb/client/xattr.c      |   3 +-
> > >  fs/smb/common/fscc.h       |   5 +-
> > >  13 files changed, 306 insertions(+), 219 deletions(-)
> > >
> > > --
> > > 2.20.1
> > >