Re: [PATCH 6.13.y] drm/panthor: Replace sleep locks with spinlocks in fdinfo path

[Greg KH <gregkh@linuxfoundation.org>]

On Sat, Apr 12, 2025 at 12:08:03AM +0100, Adrián Larumbe wrote:
> Commit 0590c94c3596 ("drm/panthor: Fix race condition when gathering fdinfo
> group samples") introduced an xarray lock to deal with potential
> use-after-free errors when accessing groups fdinfo figures. However, this
> toggles the kernel's atomic context status, so the next nested mutex lock
> will raise a warning when the kernel is compiled with mutex debug options:
> 
> CONFIG_DEBUG_RT_MUTEXES=y
> CONFIG_DEBUG_MUTEXES=y
> 
> Replace Panthor's group fdinfo data mutex with a guarded spinlock.
> 
> Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
> Fixes: 0590c94c3596 ("drm/panthor: Fix race condition when gathering fdinfo group samples")
> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
> Reviewed-by: Steven Price <steven.price@arm.com>
> Signed-off-by: Steven Price <steven.price@arm.com>
> Link: https://patchwork.freedesktop.org/patch/msgid/20250303190923.1639985-1-adrian.larumbe@collabora.com
> (cherry picked from commit e379856b428acafb8ed689f31d65814da6447b2e)
> ---
>  drivers/gpu/drm/panthor/panthor_sched.c | 28 ++++++++++++-------------
>  1 file changed, 13 insertions(+), 15 deletions(-)

Does not apply at all, did something get corrupted?