Message-ID: <dc9c9c4b-809a-bb08-b3af-ddaf4518cdf8@gmx.de>
Date:   Wed, 15 Mar 2023 17:01:26 +0100
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From:   Ronald Warsow <rwarsow@gmx.de>
To:     linux-kernel@vger.kernel.org
Cc:     stable@vger.kernel.org
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Subject: Re: [PATCH 6.2 000/141] 6.2.7-rc1 review
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Precedence: bulk

Hi Greg

6.2.7-rc1

compiles [1], boots and runs here on x86_64
(Intel i5-11400, Fedora 38 Beta)

Thanks

Tested-by: Ronald Warsow <rwarsow@gmx.de>


[1]
compiles *not* without warnings since compiler version change from
Fedora 37 =3D> Fedora 38 *Beta*

It's *not* a regression from kernel 6.2.6 =3D> 6.2.7-rc1 !

cause I'm no developer I can't decide what it is: code or compiler.

anyway I I filled a Red Hat bug report:
https://bugzilla.redhat.com/show_bug.cgi?id=3D2178317

and place the warnings here in case it is coding.
if so, please let me know, so I could suggest to close the bug report !


compilers
=3D=3D=3D=3D=3D=3D=3D=3D=3D
F38: gcc version 13.0.1 20230310 (Red Hat 13.0.1-0) (GCC)
F37: gcc-12.2.1-4.fc37

output compiling 6.2.7-rc1
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D

  CC      fs/f2fs/file.o
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_disk_total=E2=80=99 at
fs/btrfs/sysfs.c:836:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -35 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_bytes_may_use=E2=80=99 at
fs/btrfs/sysfs.c:832:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -44 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_bytes_readonly=E2=80=99 a=
t
fs/btrfs/sysfs.c:833:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -43 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_bytes_zone_unusable=E2=80=
=99 at
fs/btrfs/sysfs.c:834:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -41 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_disk_used=E2=80=99 at
fs/btrfs/sysfs.c:835:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -36 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_flags=E2=80=99 at fs/btrf=
s/sysfs.c:827:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -34 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_total_bytes=E2=80=99 at
fs/btrfs/sysfs.c:828:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -48 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_bytes_used=E2=80=99 at
fs/btrfs/sysfs.c:829:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -47 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_bytes_pinned=E2=80=99 at
fs/btrfs/sysfs.c:830:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -46 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~
In function =E2=80=98btrfs_show_u64=E2=80=99,
     inlined from =E2=80=98btrfs_space_info_show_bytes_reserved=E2=80=99 a=
t
fs/btrfs/sysfs.c:831:1:
fs/btrfs/sysfs.c:636:13: warning: array subscript -45 is outside array
bounds of =E2=80=98struct kobject[144115188075855871]=E2=80=99 [-Warray-bo=
unds=3D]
   636 |         val =3D *value_ptr;
       |         ~~~~^~~~~~~~~~~~

...

   CC      drivers/usb/core/devio.o
fs/super.c: In function =E2=80=98alloc_super=E2=80=99:
fs/super.c:234:21: warning: array subscript 2 is outside the bounds of
an interior zero-length array =E2=80=98struct lock_class_key[3]=E2=80=99
[-Wzero-length-bounds]
   234 |                 if (__percpu_init_rwsem(&s->s_writers.rw_sem[i],
       |                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   235 |                                         sb_writers_name[i],
       |                                         ~~~~~~~~~~~~~~~~~~~
   236 |                                         &type->s_writers_key[i]))
       |                                         ~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ./include/linux/highmem.h:5,
                  from ./include/linux/bvec.h:10,
                  from ./include/linux/blk_types.h:10,
                  from ./include/linux/blkdev.h:9,
                  from fs/super.c:26:
./include/linux/fs.h:2549:31: note: while referencing =E2=80=98s_writers_k=
ey=E2=80=99
  2549 |         struct lock_class_key s_writers_key[SB_FREEZE_LEVELS];
       |                               ^~~~~~~~~~~~

...