+ drm-remove-dead-warn_on-null-check-after-gfp_nofail-allocation.patch added to mm-nonmm-unstable branch

+ drm-remove-dead-warn_on-null-check-after-gfp_nofail-allocation.patch added to mm-nonmm-unstable branch

[Andrew Morton]

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The patch titled
     Subject: drm: remove dead WARN_ON NULL check after GFP_NOFAIL allocation
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     drm-remove-dead-warn_on-null-check-after-gfp_nofail-allocation.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/drm-remove-dead-warn_on-null-check-after-gfp_nofail-allocation.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Gou Hao <gouhao@uniontech.com>
Subject: drm: remove dead WARN_ON NULL check after GFP_NOFAIL allocation
Date: Fri, 24 Jul 2026 10:28:49 +0800

kzalloc_obj with the __GFP_NOFAIL flag will never return NULL, so the
subsequent WARN_ON(!ctx) is unreachable dead code.  Remove it.

Link: https://lore.kernel.org/20260724022851.466017-5-gouhao@uniontech.com
Signed-off-by: Gou Hao <gouhao@uniontech.com>
Cc: Bharat Potnuri <bharat@chelsio.com>
Cc: Cédric Le Goater <clg@kaod.org>
Cc: Dave Airlie <airlied@gmail.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: jiazhenyuan <jiazhenyuan@uniontech.com>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nam Cao <namcao@linutronix.de>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Nilay Shroff <nilay@linux.ibm.com>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Thomas Zimemrmann <tzimmermann@suse.de>
Cc: Wentao Guan <guanwentao@uniontech.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/gpu/drm/drm_modeset_lock.c |    4 ----
 1 file changed, 4 deletions(-)

--- a/drivers/gpu/drm/drm_modeset_lock.c~drm-remove-dead-warn_on-null-check-after-gfp_nofail-allocation
+++ a/drivers/gpu/drm/drm_modeset_lock.c
@@ -149,11 +149,7 @@ void drm_modeset_lock_all(struct drm_dev
 	int ret;
 
 	ctx = kzalloc_obj(*ctx, GFP_KERNEL | __GFP_NOFAIL);
-	if (WARN_ON(!ctx))
-		return;
-
 	mutex_lock(&config->mutex);
-
 	drm_modeset_acquire_init(ctx, 0);
 
 retry:
_

Patches currently in -mm which might be from gouhao@uniontech.com are

powerpc-xive-remove-dead-null-check-after-gfp_nofail-allocation.patch
powerpc-xive-add-error-return-value-to-xive_smp_probe.patch
powerpc-xive-fix-use-after-free-of-xive_ipis.patch
drm-remove-dead-warn_on-null-check-after-gfp_nofail-allocation.patch
lib-test_hmm-remove-dead-null-checks-after-gfp_nofail-allocations.patch
rdma-cxgb4-remove-dead-null-checks-after-gfp_nofail-allocations.patch