From nobody Sat Feb 7 08:44:08 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B2B5B324B16 for ; Sun, 25 Jan 2026 16:07:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769357248; cv=none; b=dJb6X12POf1vs1ScSmFnmi+mB7CiG/XI/U83/RJkU5SnGxvNsxRih6rprQDJCHwt/mbyRLZaNuItHQ79YkiW3XnK0T2erILF8ccbRmT9b3+jOIJB60zQ3cpIxrxl13he0HgnQqoi6bg8iE8AMg3wLEuGmWlinXObp27t5vZOzOs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769357248; c=relaxed/simple; bh=1JQUHjZYL59DmrAabDgnZXBTuRE0Rrr0TT0qVpO3zE4=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=R75yUCuwlxFg3Xi9mF5RE6syfwylXoW6+YD/EWiSKYA5admZ2y8KWTisZXteiQQIKqjZdlO5aDzYlZGPAsT0bIh4YrNReF3Go8VC2F5/haaykxoxM5d7jtMphYV8VdypBjrJKRL2uV1Ey5Koa6ZjtiiN/LcFov0vzkrQP1AnqAU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=gULGtUVE; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gULGtUVE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1769357245; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to; bh=xB97zLe11SZtUlvoaULtcDCkHx3T3uK2AQMcqJMNJHc=; b=gULGtUVEVg4D5DI5SEr38nTWHb3GhfRW7OyeemiWmx7r+2PyWeYsoKPq8Nw3D5pmxeFubl DJ7KVxb3wknyVgE9l2od+p0ZdztJw+sxxSUl1fAQyRzHo1IoK1DNJ1fCSCrtKvbW6vJpds dbHCYhI/dH03qhvMQZmauEkjiVcuxB4= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-683-MV5s2csbO0WMU3OsplZ8Kg-1; Sun, 25 Jan 2026 11:07:22 -0500 X-MC-Unique: MV5s2csbO0WMU3OsplZ8Kg-1 X-Mimecast-MFC-AGG-ID: MV5s2csbO0WMU3OsplZ8Kg_1769357240 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id EF0C119560B5; Sun, 25 Jan 2026 16:07:19 +0000 (UTC) Received: from fedora (unknown [10.45.224.8]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id 69D1B30001A7; Sun, 25 Jan 2026 16:07:13 +0000 (UTC) Received: by fedora (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Sun, 25 Jan 2026 17:07:19 +0100 (CET) Date: Sun, 25 Jan 2026 17:07:11 +0100 From: Oleg Nesterov To: Andrew Morton Cc: Alice Ryhl , Boris Brezillon , Christian =?iso-8859-1?Q?K=F6nig?= , Felix Kuehling , Leon Romanovsky , Steven Price , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 1/7] android/binder: don't abuse current->group_leader Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Cleanup and preparation to simplify the next changes. - Use current->tgid instead of current->group_leader->pid - Use the value returned by get_task_struct() to initialize proc->tsk Signed-off-by: Oleg Nesterov Reviewed-by: Alice Ryhl --- drivers/android/binder.c | 7 +++---- drivers/android/binder_alloc.c | 2 +- 2 files changed, 4 insertions(+), 5 deletions(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 535fc881c8da..dea701daabb0 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -6046,7 +6046,7 @@ static int binder_open(struct inode *nodp, struct fil= e *filp) bool existing_pid =3D false; =20 binder_debug(BINDER_DEBUG_OPEN_CLOSE, "%s: %d:%d\n", __func__, - current->group_leader->pid, current->pid); + current->tgid, current->pid); =20 proc =3D kzalloc(sizeof(*proc), GFP_KERNEL); if (proc =3D=3D NULL) @@ -6055,8 +6055,8 @@ static int binder_open(struct inode *nodp, struct fil= e *filp) dbitmap_init(&proc->dmap); spin_lock_init(&proc->inner_lock); spin_lock_init(&proc->outer_lock); - get_task_struct(current->group_leader); - proc->tsk =3D current->group_leader; + proc->tsk =3D get_task_struct(current->group_leader); + proc->pid =3D current->tgid; proc->cred =3D get_cred(filp->f_cred); INIT_LIST_HEAD(&proc->todo); init_waitqueue_head(&proc->freeze_wait); @@ -6075,7 +6075,6 @@ static int binder_open(struct inode *nodp, struct fil= e *filp) binder_alloc_init(&proc->alloc); =20 binder_stats_created(BINDER_STAT_PROC); - proc->pid =3D current->group_leader->pid; INIT_LIST_HEAD(&proc->delivered_death); INIT_LIST_HEAD(&proc->delivered_freeze); INIT_LIST_HEAD(&proc->waiting_threads); 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Sun, 25 Jan 2026 16:07:27 +0000 (UTC) Received: from fedora (unknown [10.45.224.8]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id 0EC9930001A7; Sun, 25 Jan 2026 16:07:21 +0000 (UTC) Received: by fedora (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Sun, 25 Jan 2026 17:07:27 +0100 (CET) Date: Sun, 25 Jan 2026 17:07:20 +0100 From: Oleg Nesterov To: Andrew Morton Cc: Alice Ryhl , Boris Brezillon , Christian =?iso-8859-1?Q?K=F6nig?= , Felix Kuehling , Leon Romanovsky , Steven Price , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 2/7] android/binder: use same_thread_group(proc->tsk, current) in binder_mmap() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" With or without this change the checked condition can be falsely true if proc->tsk execs, but this is fine: binder_alloc_mmap_handler() checks vma->vm_mm =3D=3D alloc->mm. Signed-off-by: Oleg Nesterov Reviewed-by: Alice Ryhl --- drivers/android/binder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/android/binder.c b/drivers/android/binder.c index dea701daabb0..b3b73303f84d 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -6015,7 +6015,7 @@ static int binder_mmap(struct file *filp, struct vm_a= rea_struct *vma) { struct binder_proc *proc =3D filp->private_data; =20 - if (proc->tsk !=3D current->group_leader) + if (!same_thread_group(proc->tsk, current)) return -EINVAL; =20 binder_debug(BINDER_DEBUG_OPEN_CLOSE, --=20 2.52.0 From nobody Sat Feb 7 08:44:08 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 32CB2F513 for ; Sun, 25 Jan 2026 16:07:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769357263; cv=none; b=tpOYcUGucwCTqfye5qMI9V1jm5jTdbf/bSdxzzZy94fvFildD40e5gWZwqT1PyXggcriNEVczwysP5Rvf8P5WayWfOKnhyLp/aPH1JC6HXwNtuk65H7Fg0SGrTOgAjIfEbih3xaFMPZVnalAUyeLUNk/D6pIjzYoJwBFzj2sQDQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769357263; c=relaxed/simple; bh=1lGyYdRNHkzunJkfjyz57W92tLBgj8dcgac0gWPppr4=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=IGZKmeCpOoHfc+IqHw/Ehky4/MZXkLDA3aOUgmoP+PyyMA4v9L5E3Vqt3iPVBCRuHrF0nssfdCbAMKnEE0ZI1S+riwAlu8DAtF5ad3CampDcIuJD7w6Pkach+az7es5lHJyv1BkW2lcSJSixhrzO5k3dp8s0vSSPZM/RLc5/1G4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=A+wOi+sl; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="A+wOi+sl" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1769357261; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to; bh=aojbJJ5FzMzE2HJE4QEerULCpiKv5AGEyOIjsVq7b3Q=; b=A+wOi+slVatp38lrcnDoUrXmLlVqKCZ0mnfw7awmcdnzlCIil8oZiNseMdtlwypjYmZfwI fMKbMF/0lfmHe3ASaKt8IIozyeLGeS/WI8hbhrEjplUZ14OvWnJ0wmFKiC4aCMV0Imewbo HboLSoIsvPAp18GWxixQxRL/YJul8LQ= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-632-m897L2klPTqHE3h_lcyBAg-1; Sun, 25 Jan 2026 11:07:38 -0500 X-MC-Unique: m897L2klPTqHE3h_lcyBAg-1 X-Mimecast-MFC-AGG-ID: m897L2klPTqHE3h_lcyBAg_1769357256 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id E58761800451; Sun, 25 Jan 2026 16:07:35 +0000 (UTC) Received: from fedora (unknown [10.45.224.8]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id D7B8A1958DC4; Sun, 25 Jan 2026 16:07:29 +0000 (UTC) Received: by fedora (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Sun, 25 Jan 2026 17:07:35 +0100 (CET) Date: Sun, 25 Jan 2026 17:07:28 +0100 From: Oleg Nesterov To: Andrew Morton Cc: Alice Ryhl , Boris Brezillon , Christian =?iso-8859-1?Q?K=F6nig?= , Felix Kuehling , Leon Romanovsky , Steven Price , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 3/7] drm/amdgpu: don't abuse current->group_leader Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Cleanup and preparation to simplify the next changes. - Use current->tgid instead of current->group_leader->pid - Use get_task_pid(current, PIDTYPE_TGID) instead of get_task_pid(current->group_leader, PIDTYPE_PID) Signed-off-by: Oleg Nesterov Acked-by: Felix Kuehling --- drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu= /drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index b1c24c8fa686..df22b54ba346 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -1421,7 +1421,7 @@ static int init_kfd_vm(struct amdgpu_vm *vm, void **p= rocess_info, goto create_evict_fence_fail; } =20 - info->pid =3D get_task_pid(current->group_leader, PIDTYPE_PID); + info->pid =3D get_task_pid(current, PIDTYPE_TGID); INIT_DELAYED_WORK(&info->restore_userptr_work, amdgpu_amdkfd_restore_userptr_worker); =20 diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/a= mdgpu/amdgpu_vm.c index a67285118c37..a0f8ba382b9e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2554,7 +2554,7 @@ void amdgpu_vm_set_task_info(struct amdgpu_vm *vm) if (current->group_leader->mm !=3D current->mm) return; =20 - vm->task_info->tgid =3D current->group_leader->pid; + vm->task_info->tgid =3D current->tgid; get_task_comm(vm->task_info->process_name, current->group_leader); } =20 --=20 2.52.0 From nobody Sat Feb 7 08:44:08 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6D297326921 for ; 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 4/7] drm/amd: kill the outdated "Only the pthreads threading model is supported" checks Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Content-Type: text/plain; charset="utf-8" Nowaday task->group_leader->mm !=3D task->mm is only possible if a) task is not a group leader and b) task->group_leader->mm =3D=3D NULL because task->group_leader has already exited using sys_exit(). I don't think that drm/amd tries to detect/nack this case. Signed-off-by: Oleg Nesterov Reviewed-by: Christian K=C3=B6nig Acked-by: Felix Kuehling --- drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 10 ---------- 2 files changed, 13 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/a= mdgpu/amdgpu_vm.c index a0f8ba382b9e..e44f158a11f0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2551,9 +2551,6 @@ void amdgpu_vm_set_task_info(struct amdgpu_vm *vm) vm->task_info->task.pid =3D current->pid; get_task_comm(vm->task_info->task.comm, current); =20 - if (current->group_leader->mm !=3D current->mm) - return; - vm->task_info->tgid =3D current->tgid; get_task_comm(vm->task_info->process_name, current->group_leader); } diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd= /amdkfd/kfd_process.c index a085faac9fe1..f8ef18a3aa71 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -833,12 +833,6 @@ struct kfd_process *kfd_create_process(struct task_str= uct *thread) if (!(thread->mm && mmget_not_zero(thread->mm))) return ERR_PTR(-EINVAL); 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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 5/7] drm/pan*: don't abuse current->group_leader Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Cleanup and preparation to simplify the next changes. Use current->tgid instead of current->group_leader->pid. Signed-off-by: Oleg Nesterov Acked-by: Boris Brezillon Acked-by: Steven Price --- drivers/gpu/drm/panfrost/panfrost_gem.c | 2 +- drivers/gpu/drm/panthor/panthor_gem.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panf= rost/panfrost_gem.c index 8041b65c6609..1ff1f2c8b726 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.c +++ b/drivers/gpu/drm/panfrost/panfrost_gem.c @@ -17,7 +17,7 @@ static void panfrost_gem_debugfs_bo_add(struct panfrost_device *pfdev, struct panfrost_gem_object *bo) { - bo->debugfs.creator.tgid =3D current->group_leader->pid; + bo->debugfs.creator.tgid =3D current->tgid; get_task_comm(bo->debugfs.creator.process_name, current->group_leader); =20 mutex_lock(&pfdev->debugfs.gems_lock); diff --git a/drivers/gpu/drm/panthor/panthor_gem.c b/drivers/gpu/drm/pantho= r/panthor_gem.c index fbde78db270a..29cc57efc4b9 100644 --- a/drivers/gpu/drm/panthor/panthor_gem.c +++ b/drivers/gpu/drm/panthor/panthor_gem.c @@ -27,7 +27,7 @@ static void panthor_gem_debugfs_bo_add(struct panthor_gem= _object *bo) struct panthor_device *ptdev =3D container_of(bo->base.base.dev, struct panthor_device, base); 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Sun, 25 Jan 2026 16:07:59 +0000 (UTC) Received: from fedora (unknown [10.45.224.8]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id CE9F51956053; Sun, 25 Jan 2026 16:07:53 +0000 (UTC) Received: by fedora (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Sun, 25 Jan 2026 17:07:59 +0100 (CET) Date: Sun, 25 Jan 2026 17:07:52 +0100 From: Oleg Nesterov To: Andrew Morton Cc: Alice Ryhl , Boris Brezillon , Christian =?iso-8859-1?Q?K=F6nig?= , Felix Kuehling , Leon Romanovsky , Steven Price , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 6/7] RDMA/umem: don't abuse current->group_leader Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Cleanup and preparation to simplify the next changes. Use current->tgid instead of current->group_leader->pid. Signed-off-by: Oleg Nesterov Acked-by: Leon Romanovsky --- drivers/infiniband/core/umem_odp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/u= mem_odp.c index 572a91a62a7b..32267258a19c 100644 --- a/drivers/infiniband/core/umem_odp.c +++ b/drivers/infiniband/core/umem_odp.c @@ -149,7 +149,7 @@ struct ib_umem_odp *ib_umem_odp_alloc_implicit(struct i= b_device *device, umem->owning_mm =3D current->mm; umem_odp->page_shift =3D PAGE_SHIFT; =20 - umem_odp->tgid =3D get_task_pid(current->group_leader, PIDTYPE_PID); + umem_odp->tgid =3D get_task_pid(current, PIDTYPE_TGID); ib_init_umem_implicit_odp(umem_odp); return umem_odp; } @@ -258,7 +258,7 @@ struct ib_umem_odp *ib_umem_odp_get(struct ib_device *d= evice, umem_odp->page_shift =3D HPAGE_SHIFT; #endif =20 - umem_odp->tgid =3D get_task_pid(current->group_leader, PIDTYPE_PID); + umem_odp->tgid =3D get_task_pid(current, PIDTYPE_TGID); ret =3D ib_init_umem_odp(umem_odp, ops); if (ret) goto err_put_pid; --=20 2.52.0 From nobody Sat Feb 7 08:44:08 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 01BC6325490 for ; Sun, 25 Jan 2026 16:08:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769357293; cv=none; b=GH62z9srwvY1uBoUPC+NX/4xUCli+dGLCx6yiFZwQNYU/Y3H7K7S7eAz1rR464YQlnWhVVOLafHigch5q9xD4OOEcsHqwaL+Y/dCKorpYOH33UD+yaYEgo3ExNunycIxVmWdO1D4fTrUfg50JRn9OjxJNPpVcDVIgOq/5uwquNY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769357293; c=relaxed/simple; bh=K2R9b0barWC68k/7xbhNUGCfm1zFHkjY7UaNg/NdOEg=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=LzmjKgTd6mTBWPB3uS3ZMHQplvm2e/fRSRLBFI0OM6DfahdgcAD0g7I6G+U6KltvlHtsCTds6tL9WguAw+h+GkYFKf2o0jCLpti0zJrq05lvs81forvRewUkuUU6153pE6IYo+PHGd0kSgk3ilPTzrGcIli9Eyu3vW9vmmrfqmM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=QNJfx2Lb; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="QNJfx2Lb" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1769357290; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to; bh=vBKRDP8bqkordujGp7qy48QcPV4IJTrct7fsioyRbjk=; b=QNJfx2LbernWrdwz+hyK1lauodzqSbJ0OWh59YXe2ndrT5OfseRCk1XefOVHJQ2BkiUSVP 1g1WZ02Z35RGrX7cS5EgEQK5HWcK/PevB4RTBx+x7RSunnDZ754RLhzozH2B6kXa2RvuW8 NHNaxQYHiyXQoR84MiFpOxMY24PW8ZU= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-272-flqaROaMMQSqWeM4JnXa7g-1; Sun, 25 Jan 2026 11:08:09 -0500 X-MC-Unique: flqaROaMMQSqWeM4JnXa7g-1 X-Mimecast-MFC-AGG-ID: flqaROaMMQSqWeM4JnXa7g_1769357287 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 452B71956089; Sun, 25 Jan 2026 16:08:07 +0000 (UTC) Received: from fedora (unknown [10.45.224.8]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id 89E9F180049F; Sun, 25 Jan 2026 16:08:01 +0000 (UTC) Received: by fedora (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Sun, 25 Jan 2026 17:08:06 +0100 (CET) Date: Sun, 25 Jan 2026 17:08:00 +0100 From: Oleg Nesterov To: Andrew Morton Cc: Alice Ryhl , Boris Brezillon , Christian =?iso-8859-1?Q?K=F6nig?= , Felix Kuehling , Leon Romanovsky , Steven Price , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v2 7/7] netclassid: use thread_group_leader(p) in update_classid_task() Message-ID: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Cleanup and preparation to simplify the next changes. Signed-off-by: Oleg Nesterov --- net/core/netclassid_cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/netclassid_cgroup.c b/net/core/netclassid_cgroup.c index dff66d8fb325..db9a5354f9de 100644 --- a/net/core/netclassid_cgroup.c +++ b/net/core/netclassid_cgroup.c @@ -93,7 +93,7 @@ static void update_classid_task(struct task_struct *p, u3= 2 classid) /* Only update the leader task, when many threads in this task, * so it can avoid the useless traversal. */ - if (p !=3D p->group_leader) + if (!thread_group_leader(p)) return; =20 do { --=20 2.52.0