From nobody Sat Nov 30 03:28:13 2024 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 4EC261BFE0D for ; Thu, 12 Sep 2024 19:05:58 +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=1726167960; cv=none; b=gynBDOcYDzDumCGtM778uhfpKsLUqpPoLQEH3R+uz/Ls4IpDA55e+SWD79QkgagB3/IGoCpZe2ssuEFb5BomhomAjOtqmXZhzMJBQqRsd6sTsXo/VA2zLxrA03ruMpU7t0SN2jyLxFNF4g/yuoi3JA/r9iYYecYWPU7suDwu058= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726167960; c=relaxed/simple; bh=eARtEvyiyNCuDqtRFJhK5Peb1wsSdyYQRLhzSt1Y6Pc=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=QxwEEcnpRUTn2Yml2YIOpFqWXL9SI3u2HX4TZNl9LvMDu2m4hXczO2IHNCgISibH8JIfaphhy6KWqIUYWgkIh/FFejtxBYH2P8K+KA1H2ARlEzEh2Bg2lLCJTHykV1Ju5z3vpgUVwV2laxCG9+LfF/fjAvKJf4rE1wcwd3VpXBA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none 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=J5jIzuGc; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none 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="J5jIzuGc" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1726167957; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=dlK69Nsmvtal6JrK/uDc1I6BwwDt1lW0qP7afYUbTCo=; b=J5jIzuGcKuFJ2owXJ4R5dwK7/5ZUWBJ3FzMJgwOLXCcG3KMC/Wsc2qCs1fTjIlVpKAwQbU ff3lO7FdUfCON+GfzQ3nCu7w7+XC+1YkqiieQJXimfJW8CFD1hB0O7Ch8lKHHNFbv7tsB9 ZJGjPj0ldVFyUuAKDg52sS6MqpuEMQc= Received: from mx-prod-mc-02.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-630-krA8WPGvOladJdEFrVKm2A-1; Thu, 12 Sep 2024 15:05:55 -0400 X-MC-Unique: krA8WPGvOladJdEFrVKm2A-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (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-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8BBDE1954209; Thu, 12 Sep 2024 19:05:54 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.22.32.208]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id AE10D1955D52; Thu, 12 Sep 2024 19:05:52 +0000 (UTC) From: Luiz Capitulino To: ilpo.jarvinen@linux.intel.com, shravankr@nvidia.com Cc: davthompson@nvidia.com, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, lcapitulino@gmail.com Subject: [PATCH] platform/mellanox: mlxbf-pmc: fix lockdep warning Date: Thu, 12 Sep 2024 15:05:32 -0400 Message-ID: <20240912190532.377097-1-luizcap@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Content-Type: text/plain; charset="utf-8" It seems the mlxbf-pmc driver is missing initializing sysfs attributes which causes the warning below when CONFIG_LOCKDEP and CONFIG_DEBUG_LOCK_ALLOC are enabled. This commit fixes it. [ 155.380843] BUG: key ffff470f45dfa6d8 has not been registered! [ 155.386749] ------------[ cut here ]------------ [ 155.391361] DEBUG_LOCKS_WARN_ON(1) [ 155.391381] WARNING: CPU: 4 PID: 1828 at kernel/locking/lockdep.c:4894 l= ockdep_init_map_type+0x1d0/0x288 [ 155.404254] Modules linked in: mlxbf_pmc(+) xfs libcrc32c mmc_block mlx5= _core crct10dif_ce mlxfw ghash_ce virtio_net tls net_failover sha2 _ce failover psample sha256_arm64 dw_mmc_bluefield pci_hyperv_intf sha1_ce = dw_mmc_pltfm sbsa_gwdt dw_mmc micrel mmc_core nfit i2c_mlxbf pwr_m lxbf gpio_generic libnvdimm mlxbf_tmfifo mlxbf_gige dm_mirror dm_region_has= h dm_log dm_mod [ 155.436786] CPU: 4 UID: 0 PID: 1828 Comm: modprobe Kdump: loaded Not tai= nted 6.11.0-rc7-rep1+ #1 [ 155.445562] Hardware name: https://www.mellanox.com BlueField SoC/BlueFi= eld SoC, BIOS 4.8.0.13249 Aug 7 2024 [ 155.455463] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE= =3D--) [ 155.462413] pc : lockdep_init_map_type+0x1d0/0x288 [ 155.467196] lr : lockdep_init_map_type+0x1d0/0x288 [ 155.471976] sp : ffff80008a1734e0 [ 155.475279] x29: ffff80008a1734e0 x28: ffff470f45df0240 x27: 00000000fff= fee4b [ 155.482406] x26: 00000000000011b4 x25: 0000000000000000 x24: 00000000000= 00000 [ 155.489532] x23: ffff470f45dfa6d8 x22: 0000000000000000 x21: ffffd54ef6b= ea000 [ 155.496659] x20: ffff470f45dfa6d8 x19: ffff470f49cdc638 x18: fffffffffff= fffff [ 155.503784] x17: 2f30303a31444642 x16: ffffd54ef48a65e8 x15: ffff80010a1= 72fe7 [ 155.510911] x14: 0000000000000000 x13: 284e4f5f4e524157 x12: 5f534b434f4= c5f47 [ 155.518037] x11: 0000000000000001 x10: 0000000000000001 x9 : ffffd54ef3f= 48a14 [ 155.525163] x8 : 00000000000bffe8 x7 : c0000000ffff7fff x6 : 00000000002= bffa8 [ 155.532289] x5 : ffff4712bdcb6088 x4 : 0000000000000000 x3 : 00000000000= 00027 [ 155.539416] x2 : 0000000000000000 x1 : 0000000000000000 x0 : ffff470f43e= 5be00 [ 155.546542] Call trace: [ 155.548976] lockdep_init_map_type+0x1d0/0x288 [ 155.553410] __kernfs_create_file+0x80/0x138 [ 155.557673] sysfs_add_file_mode_ns+0x94/0x150 [ 155.562106] create_files+0xb0/0x248 [ 155.565672] internal_create_group+0x10c/0x328 [ 155.570105] internal_create_groups.part.0+0x50/0xc8 [ 155.575060] sysfs_create_groups+0x20/0x38 [ 155.579146] device_add_attrs+0x1b8/0x228 [ 155.583146] device_add+0x2a4/0x690 [ 155.586625] device_register+0x24/0x38 [ 155.590362] __hwmon_device_register+0x1e0/0x3c8 [ 155.594969] devm_hwmon_device_register_with_groups+0x78/0xe0 [ 155.600703] mlxbf_pmc_probe+0x224/0x3a0 [mlxbf_pmc] [ 155.605669] platform_probe+0x6c/0xe0 [ 155.609320] really_probe+0xc4/0x398 [ 155.612887] __driver_probe_device+0x80/0x168 [ 155.617233] driver_probe_device+0x44/0x120 [ 155.621405] __driver_attach+0xf4/0x200 [ 155.625230] bus_for_each_dev+0x7c/0xe8 [ 155.629055] driver_attach+0x28/0x38 [ 155.632619] bus_add_driver+0x110/0x238 [ 155.636445] driver_register+0x64/0x128 [ 155.640270] __platform_driver_register+0x2c/0x40 [ 155.644965] pmc_driver_init+0x24/0xff8 [mlxbf_pmc] [ 155.649833] do_one_initcall+0x70/0x3d0 [ 155.653660] do_init_module+0x64/0x220 [ 155.657400] load_module+0x628/0x6a8 [ 155.660964] init_module_from_file+0x8c/0xd8 [ 155.665222] idempotent_init_module+0x194/0x290 [ 155.669742] __arm64_sys_finit_module+0x6c/0xd8 [ 155.674261] invoke_syscall.constprop.0+0x74/0xd0 [ 155.678957] do_el0_svc+0xb4/0xd0 [ 155.682262] el0_svc+0x5c/0x248 [ 155.685394] el0t_64_sync_handler+0x134/0x150 [ 155.689739] el0t_64_sync+0x17c/0x180 [ 155.693390] irq event stamp: 6407 [ 155.696693] hardirqs last enabled at (6407): [] conso= le_unlock+0x154/0x1b8 [ 155.705207] hardirqs last disabled at (6406): [] conso= le_unlock+0x19c/0x1b8 [ 155.713719] softirqs last enabled at (6404): [] handl= e_softirqs+0x4f4/0x518 [ 155.722320] softirqs last disabled at (6395): [] __do_= softirq+0x18/0x20 [ 155.730484] ---[ end trace 0000000000000000 ]--- Signed-off-by: Luiz Capitulino --- drivers/platform/mellanox/mlxbf-pmc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/platform/mellanox/mlxbf-pmc.c b/drivers/platform/mella= nox/mlxbf-pmc.c index 4ed9c7fd2b62..9d18dfca6a67 100644 --- a/drivers/platform/mellanox/mlxbf-pmc.c +++ b/drivers/platform/mellanox/mlxbf-pmc.c @@ -1774,6 +1774,7 @@ static int mlxbf_pmc_init_perftype_counter(struct dev= ice *dev, unsigned int blk_ =20 /* "event_list" sysfs to list events supported by the block */ attr =3D &pmc->block[blk_num].attr_event_list; + sysfs_attr_init(&attr->dev_attr.attr); attr->dev_attr.attr.mode =3D 0444; attr->dev_attr.show =3D mlxbf_pmc_event_list_show; attr->nr =3D blk_num; @@ -1787,6 +1788,7 @@ static int mlxbf_pmc_init_perftype_counter(struct dev= ice *dev, unsigned int blk_ if (strstr(pmc->block_name[blk_num], "l3cache") || ((pmc->block[blk_num].type =3D=3D MLXBF_PMC_TYPE_CRSPACE))) { attr =3D &pmc->block[blk_num].attr_enable; + sysfs_attr_init(&attr->dev_attr.attr); attr->dev_attr.attr.mode =3D 0644; attr->dev_attr.show =3D mlxbf_pmc_enable_show; attr->dev_attr.store =3D mlxbf_pmc_enable_store; @@ -1814,6 +1816,7 @@ static int mlxbf_pmc_init_perftype_counter(struct dev= ice *dev, unsigned int blk_ /* "eventX" and "counterX" sysfs to program and read counter values */ for (j =3D 0; j < pmc->block[blk_num].counters; ++j) { attr =3D &pmc->block[blk_num].attr_counter[j]; + sysfs_attr_init(&attr->dev_attr.attr); attr->dev_attr.attr.mode =3D 0644; attr->dev_attr.show =3D mlxbf_pmc_counter_show; attr->dev_attr.store =3D mlxbf_pmc_counter_store; @@ -1826,6 +1829,7 @@ static int mlxbf_pmc_init_perftype_counter(struct dev= ice *dev, unsigned int blk_ attr =3D NULL; =20 attr =3D &pmc->block[blk_num].attr_event[j]; + sysfs_attr_init(&attr->dev_attr.attr); attr->dev_attr.attr.mode =3D 0644; attr->dev_attr.show =3D mlxbf_pmc_event_show; attr->dev_attr.store =3D mlxbf_pmc_event_store; @@ -1861,6 +1865,7 @@ static int mlxbf_pmc_init_perftype_reg(struct device = *dev, unsigned int blk_num) while (count > 0) { --count; attr =3D &pmc->block[blk_num].attr_event[count]; + sysfs_attr_init(&attr->dev_attr.attr); attr->dev_attr.attr.mode =3D 0644; attr->dev_attr.show =3D mlxbf_pmc_counter_show; attr->dev_attr.store =3D mlxbf_pmc_counter_store; --=20 2.46.0