linux-kernel - Re: [BUG -next] ./usr/include/cxl/features.h:11:10: fatal error: uuid/uuid.h: No such file or directory

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Message-ID: <2b0d7649-8998-40ef-b9ba-e1c91acf4c9d@paulmck-laptop>
Date: Tue, 1 Apr 2025 07:08:02 -0700
From: "Paul E. McKenney" <paulmck@...nel.org>
To: Venkat Rao Bagalkote <venkat88@...ux.ibm.com>
Cc: Dan Williams <dan.j.williams@...el.com>,
	Jason Gunthorpe <jgg@...dia.com>, Dave Jiang <dave.jiang@...el.com>,
	linux-cxl@...r.kernel.org, dave@...olabs.net,
	jonathan.cameron@...wei.com, alison.schofield@...el.com,
	vishal.l.verma@...el.com, ira.weiny@...el.com, gourry@...rry.net,
	linux-kernel@...r.kernel.org, linux-next@...r.kernel.org,
	sfr@...b.auug.org.au, Madhavan Srinivasan <maddy@...ux.ibm.com>
Subject: Re: [BUG -next] ./usr/include/cxl/features.h:11:10: fatal error:
 uuid/uuid.h: No such file or directory

On Tue, Apr 01, 2025 at 12:31:20PM +0530, Venkat Rao Bagalkote wrote:
> 
> On 01/04/25 1:17 am, Dan Williams wrote:
> > Jason Gunthorpe wrote:
> > > On Mon, Mar 31, 2025 at 09:54:55AM -0700, Dan Williams wrote:
> > > > Jason Gunthorpe wrote:
> > > > > On Fri, Mar 28, 2025 at 05:26:42PM -0700, Dave Jiang wrote:
> > > > > > > For now the following builds for me, but it is a quite a mess to undo
> > > > > > > the assumption that that the hardware object definitions can not use
> > > > > > > uuid_t:
> > > > > > +Jason.
> > > > > Seems invasive?
> > > > Yeah, it left a bad taste for me as well.
> > > > 
> > > > > Maybe just like below?
> > > > I like that this avoids converting to the kernel's uuid API, however,
> > > > not quite happy that it forces userspace to contend with the
> > > > type-conflict with uuid/uuid.h.
> > > Oh I see
> > > > So how about one more riff on your idea?
> > > Sure, works for me, please post it..
> > b4 am supports scissors lines, so:
> > 
> > b4 am -P _  67eac8df3e217_201f02948d@...llia2-xfh.jf.intel.com.notmuch
> > 
> > ...works for me. Do you still need a separate posting?
> > 
> 
> This issue got introduced in next-20250307 and got fixed in
> next-20250311(not sure what fixed).
> 
> But again got re-introduced in  next-20250318. I tried bisection, below are
> the logs.
> 
> One of the things I tried is to install the UUID packages on my set up and
> after installing those packages, issue is not seen.
> 
> rpm -qa | grep uuid
> 
> libuuid-2.37.4-20.el9.ppc64le
> uuid-1.6.2-55.el9.ppc64le
> uuid-c++-1.6.2-55.el9.ppc64le
> uuid-dce-1.6.2-55.el9.ppc64le
> uuid-devel-1.6.2-55.el9.ppc64le
> uuidd-2.37.4-20.el9.ppc64le
> libuuid-devel-2.37.4-20.el9.ppc64le
> 
> So wondering is this not a setup issue?  Please advice.

Me, I would hope that it would not be necessary to install seven UUID
packages just to do an allmodconfig build of the kernel.  Perhaps naive
of me, I know.  ;-)

							Thanx, Paul

> Bisect Log:
> 
> git bisect log
> git bisect start
> # status: waiting for both good and bad commits
> # bad: [c4d4884b67802c41fd67399747165d65c770621a] Add linux-next specific
> files for 20250318
> git bisect bad c4d4884b67802c41fd67399747165d65c770621a
> # status: waiting for good commit(s), bad commit known
> # good: [4701f33a10702d5fc577c32434eb62adde0a1ae1] Linux 6.14-rc7
> git bisect good 4701f33a10702d5fc577c32434eb62adde0a1ae1
> # good: [cda4d1b29991d4500e9f65c6936b5d3ccd99ecbb] Merge branch
> 'spi-nor/next' of
> git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git
> git bisect good cda4d1b29991d4500e9f65c6936b5d3ccd99ecbb
> # good: [9b22611592aa21d10f7d1b89352a618436dea7ac] Merge branch 'next' of
> git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd.git
> git bisect good 9b22611592aa21d10f7d1b89352a618436dea7ac
> # good: [264791f7669a8246d129cbb935c861debba2f116] Merge branch
> 'driver-core-next' of
> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
> git bisect good 264791f7669a8246d129cbb935c861debba2f116
> # good: [3c51cb2d6ec7cecf724cd5d78a0633f61f31e726] Merge branch 'for-next'
> of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux.git
> git bisect good 3c51cb2d6ec7cecf724cd5d78a0633f61f31e726
> # good: [612481dbc16505cf5e940809ebf36d8460d174cf] Merge branch 'main' of
> git://git.infradead.org/users/willy/xarray.git
> git bisect good 612481dbc16505cf5e940809ebf36d8460d174cf
> # bad: [892715be4379deb333376e573113fd75672eca6c] Merge branch 'rust-next'
> of https://github.com/Rust-for-Linux/linux.git
> git bisect bad 892715be4379deb333376e573113fd75672eca6c
> # bad: [b33f4167a8a2b9b9cc6b3e06f79b030db82cf530] Merge branch 'next' of
> git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git
> git bisect bad b33f4167a8a2b9b9cc6b3e06f79b030db82cf530
> # good: [3b5d43245f0a56390baaa670e1b6d898772266b3] Merge branch
> 'for-6.15/features' into cxl-for-next
> git bisect good 3b5d43245f0a56390baaa670e1b6d898772266b3
> # good: [d11af4ae2169672b690a4d07a9dfdfd76c082683] Merge branch 'for-next'
> of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay.git
> git bisect good d11af4ae2169672b690a4d07a9dfdfd76c082683
> # bad: [5908f3ed6dc209e5c824e63afda7545805f75a7e] cxl: Add support to handle
> user feature commands for get feature
> git bisect bad 5908f3ed6dc209e5c824e63afda7545805f75a7e
> # good: [18285acc2c047cda2449f426c09fc8969b04b8b1] fwctl: Add documentation
> git bisect good 18285acc2c047cda2449f426c09fc8969b04b8b1
> # good: [15a26c223fff58d9fa4ada12a8c35697f8ecdf6c] Merge branch
> 'for-6.15/features' into fwctl
> git bisect good 15a26c223fff58d9fa4ada12a8c35697f8ecdf6c
> # bad: [9b8e73cdb1418f7c251c43b2082218ed9c0d0fee] cxl: Move cxl feature
> command structs to user header
> git bisect bad 9b8e73cdb1418f7c251c43b2082218ed9c0d0fee
> # good: [858ce2f56b5253063f61f6b1c58a6dbf5d71da0b] cxl: Add FWCTL support to
> CXL
> git bisect good 858ce2f56b5253063f61f6b1c58a6dbf5d71da0b
> # first bad commit: [9b8e73cdb1418f7c251c43b2082218ed9c0d0fee] cxl: Move cxl
> feature command structs to user header
> 
> 9b8e73cdb1418f7c251c43b2082218ed9c0d0fee is the first bad commit
> commit 9b8e73cdb1418f7c251c43b2082218ed9c0d0fee
> Author: Dave Jiang <dave.jiang@...el.com>
> Date:  Fri Mar 7 13:55:32 2025 -0700
> 
>   cxl: Move cxl feature command structs to user header
> 
>   In preparation for cxl fwctl enabling, move data structures related to
>   cxl feature commands to a user header file.
> 
>   Reviewed-by; Jonathan Cameron <Jonathan.Cameron@...wei.com>
> 
>   Link:
> https://patch.msgid.link/r/20250307205648.1021626-3-dave.jiang@intel.com
>   Reviewed-by: Dan Williams <dan.j.williams@...el.com>
>   Reviewed-by: Li Ming <ming.li@...omail.com>
>   Signed-off-by: Dave Jiang <dave.jiang@...el.com>
>   Signed-off-by: Jason Gunthorpe <jgg@...dia.com>
> 
>  include/cxl/features.h   | 112 +----------------------------
>  include/uapi/cxl/features.h | 169
> ++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 170 insertions(+), 111 deletions(-)
>  create mode 100644 include/uapi/cxl/features.h
> 
> 
> Regards,
> 
> Venkat.
>