Messages in this thread | | | Date | Fri, 24 Jun 2022 22:13:28 +0200 | From | Daniel Vetter <> | Subject | Re: [PATCH 04/11] drm/r128: Fix undefined behavior due to shift overflowing the constant |
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On Thu, Jun 16, 2022 at 09:06:45AM -0700, Randy Dunlap wrote: > > > On 5/19/22 06:05, Daniel Vetter wrote: > > On Mon, Apr 25, 2022 at 11:46:53AM -0700, Randy Dunlap wrote: > >> > >> > >> On 4/5/22 08:15, Borislav Petkov wrote: > >>> From: Borislav Petkov <bp@suse.de> > >>> > >>> Fix: > >>> > >>> drivers/gpu/drm/r128/r128_cce.c: In function ‘r128_do_init_cce’: > >>> drivers/gpu/drm/r128/r128_cce.c:417:2: error: case label does not reduce to an integer constant > >>> case R128_PM4_64BM_64VCBM_64INDBM: > >>> ^~~~ > >>> drivers/gpu/drm/r128/r128_cce.c:418:2: error: case label does not reduce to an integer constant > >>> case R128_PM4_64PIO_64VCPIO_64INDPIO: > >>> ^~~~ > >>> > >>> See https://lore.kernel.org/r/YkwQ6%2BtIH8GQpuct@zn.tnic for the gory > >>> details as to why it triggers with older gccs only. > >>> > >>> Signed-off-by: Borislav Petkov <bp@suse.de> > >>> Cc: David Airlie <airlied@linux.ie> > >>> Cc: Daniel Vetter <daniel@ffwll.ch> > >>> Cc: Alex Deucher <alexander.deucher@amd.com> > >>> Cc: dri-devel@lists.freedesktop.org > >> > >> Reviewed-by: Randy Dunlap <rdunlap@infradead.org> > > > > Pushed to drm-misc-next, thanks for patch&review. > > -Daniel > > > > Hi, > > Will this be merged to mainline any time soonish?
It missed the merge window by a hair, so it's in linux-next and will get into the next one. -Daniel
> > thanks. > > >> > >> Thanks. > >> > >>> --- > >>> drivers/gpu/drm/r128/r128_drv.h | 4 ++-- > >>> 1 file changed, 2 insertions(+), 2 deletions(-) > >>> > >>> diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h > >>> index 2e1bc01aa5c9..970e192b0d51 100644 > >>> --- a/drivers/gpu/drm/r128/r128_drv.h > >>> +++ b/drivers/gpu/drm/r128/r128_drv.h > >>> @@ -300,8 +300,8 @@ extern long r128_compat_ioctl(struct file *filp, unsigned int cmd, > >>> # define R128_PM4_64PIO_128INDBM (5 << 28) > >>> # define R128_PM4_64BM_128INDBM (6 << 28) > >>> # define R128_PM4_64PIO_64VCBM_64INDBM (7 << 28) > >>> -# define R128_PM4_64BM_64VCBM_64INDBM (8 << 28) > >>> -# define R128_PM4_64PIO_64VCPIO_64INDPIO (15 << 28) > >>> +# define R128_PM4_64BM_64VCBM_64INDBM (8U << 28) > >>> +# define R128_PM4_64PIO_64VCPIO_64INDPIO (15U << 28) > >>> # define R128_PM4_BUFFER_CNTL_NOUPDATE (1 << 27) > >>> > >>> #define R128_PM4_BUFFER_WM_CNTL 0x0708 > >> > >> -- > >> ~Randy > > > > -- > ~Randy
-- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
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