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Message-ID: <202412252329.a12c3be7-lkp@intel.com>
Date: Wed, 25 Dec 2024 23:15:53 +0800
From: kerne test robot <oliver.sang@...el.com>
To: Luca Ceresoli <luca.ceresoli@...tlin.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, Dmitry Baryshkov
<dmitry.baryshkov@...aro.org>, <dri-devel@...ts.freedesktop.org>, "Maarten
Lankhorst" <maarten.lankhorst@...ux.intel.com>, Maxime Ripard
<mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, David Airlie
<airlied@...il.com>, Simona Vetter <simona@...ll.ch>, Jani Nikula
<jani.nikula@...ux.intel.com>, Thomas Petazzoni
<thomas.petazzoni@...tlin.com>, <linux-kernel@...r.kernel.org>, Luca Ceresoli
<luca.ceresoli@...tlin.com>, Louis Chauvet <louis.chauvet@...tlin.com>,
<oliver.sang@...el.com>
Subject: Re: [PATCH RESEND v3 4/4] drm/connector: warn when cleaning up a
refcounted connector
Hello,
the WARN added in this commit is hit in our tests, below just FYI.
kernel test robot noticed "WARNING:at_drivers/gpu/drm/drm_connector.c:#drm_connector_cleanup[drm]" on:
commit: b7e98abf2a95872b85ec5e94c98c98a7c8d10519 ("[PATCH RESEND v3 4/4] drm/connector: warn when cleaning up a refcounted connector")
url: https://github.com/intel-lab-lkp/linux/commits/Luca-Ceresoli/drm-drm_mode_object-fix-typo-in-kerneldoc/20241217-004320
patch link: https://lore.kernel.org/all/20241216-drm-small-improvements-v3-4-78bbc95ac776@bootlin.com/
patch subject: [PATCH RESEND v3 4/4] drm/connector: warn when cleaning up a refcounted connector
in testcase: perf-fuzzer
version: perf-fuzzer-x86_64-a052241-1_20241102
with following parameters:
runtime: 1h
config: x86_64-rhel-9.4-bpf
compiler: gcc-12
test machine: 20 threads 1 sockets (Commet Lake) with 16G memory
(please refer to attached dmesg/kmsg for entire log/backtrace)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202412252329.a12c3be7-lkp@intel.com
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20241225/202412252329.a12c3be7-lkp@intel.com
[ 75.546607][ T377] i915 0000:00:02.0: [drm] [ENCODER:98:DDI A/PHY A] failed to retrieve link info, disabling eDP
[ 75.557310][ T377] ------------[ cut here ]------------
[ 75.562737][ T377] WARNING: CPU: 9 PID: 377 at drivers/gpu/drm/drm_connector.c:631 drm_connector_cleanup+0x591/0x5c0 [drm]
[ 75.574145][ T377] Modules linked in: intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common snd_sof_pci_intel_cnl snd_sof_intel_hda_generic soundwire_intel soundwire_cadence snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_acpi_intel_match soundwire_generic_allocation x86_pkg_temp_thermal snd_soc_acpi intel_powerclamp btrfs soundwire_bus snd_soc_avs snd_soc_hda_codec snd_hda_ext_core coretemp snd_soc_core blake2b_generic snd_compress xor zstd_compress snd_hda_intel kvm_intel tps6598x snd_intel_dspcfg raid6_pq netconsole libcrc32c regmap_i2c snd_intel_sdw_acpi i915(+) kvm snd_hda_codec sd_mod crct10dif_pclmul crc32_pclmul snd_hda_core sg cec crc32c_intel snd_hwdep drm_buddy ghash_clmulni_intel ipmi_devintf ipmi_msghandler drm_display_helper snd_pcm sdhci_pci ahci rapl i2c_designware_platform ttm i2c_designware_core libahci snd_timer cqhci intel_cstate drm_kms_helper intel_lpss_pci sdhci i2c_i801
[ 75.574336][ T377] intel_uncore snd mei_me intel_lpss intel_gtt wmi_bmof pcspkr libata mmc_core i2c_smbus ppdev soundcore mei agpgart idma64 intel_pch_thermal intel_wmi_thunderbolt serial_multi_instantiate parport_pc intel_pmc_core video parport intel_vsec pmt_telemetry wmi pinctrl_cannonlake pmt_class acpi_tad acpi_pad serio_raw binfmt_misc drm dm_mod ip_tables x_tables sch_fq_codel
[ 75.699513][ T377] CPU: 9 UID: 0 PID: 377 Comm: (udev-worker) Not tainted 6.12.0-rc4-00004-gb7e98abf2a95 #1
[ 75.709478][ T377] RIP: 0010:drm_connector_cleanup+0x591/0x5c0 [drm]
[ 75.716148][ T377] Code: 00 e8 73 60 6a c2 4c 89 f7 e8 9b 8b 6f c2 48 89 ef e8 73 f0 34 c1 e9 49 fb ff ff 0f 0b 48 89 df e8 64 e3 ff ff e9 c4 fa ff ff <0f> 0b e9 a4 fa ff ff be 03 00 00 00 48 89 ef e8 1b 93 95 c1 e9 21
[ 75.735742][ T377] RSP: 0018:ffff88813ef1f2a8 EFLAGS: 00010202
[ 75.741757][ T377] RAX: 0000000000000001 RBX: ffff88811ee48000 RCX: dffffc0000000000
[ 75.749672][ T377] RDX: 0000000000000003 RSI: ffffffffc03362c5 RDI: ffff88811ee48050
[ 75.757588][ T377] RBP: ffff88811ee48000 R08: 0000000000000000 R09: ffffed1023dc900a
[ 75.765506][ T377] R10: ffff88811ee48053 R11: 0000000000000000 R12: ffff8881400c8000
[ 75.773423][ T377] R13: 0000000000000000 R14: ffffffffc19f9f80 R15: ffffffffc1a011a0
[ 75.781342][ T377] FS: 00007f0aece108c0(0000) GS:ffff8883a1e80000(0000) knlGS:0000000000000000
[ 75.790216][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 75.796737][ T377] CR2: 00005654bfbb9378 CR3: 0000000105976006 CR4: 00000000003726f0
[ 75.804663][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 75.812577][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 75.820489][ T377] Call Trace:
[ 75.823699][ T377] <TASK>
[ 75.826566][ T377] ? drm_connector_cleanup+0x591/0x5c0 [drm]
[ 75.832581][ T377] ? __warn+0x9d/0x140
[ 75.836581][ T377] ? drm_connector_cleanup+0x591/0x5c0 [drm]
[ 75.842597][ T377] ? report_bug+0x1a6/0x1d0
[ 75.847028][ T377] ? handle_bug+0x53/0xa0
[ 75.851288][ T377] ? exc_invalid_op+0x13/0x40
[ 75.855903][ T377] ? asm_exc_invalid_op+0x16/0x20
[ 75.860873][ T377] ? drm_mode_object_read_refcount+0x35/0x40 [drm]
[ 75.867428][ T377] ? drm_connector_cleanup+0x591/0x5c0 [drm]
[ 75.873436][ T377] ? drm_connector_cleanup+0x34/0x5c0 [drm]
[ 75.879362][ T377] intel_dp_init_connector+0x773/0x920 [i915]
[ 75.885913][ T377] ? __pfx_intel_ddi_prepare_link_retrain+0x10/0x10 [i915]
[ 75.893478][ T377] intel_ddi_init+0x109c/0x1990 [i915]
[ 75.899335][ T377] ? __pfx_intel_ddi_init+0x10/0x10 [i915]
[ 75.905503][ T377] intel_bios_for_each_encoder+0x39/0x60 [i915]
[ 75.912129][ T377] intel_setup_outputs+0x754/0x1080 [i915]
[ 75.918307][ T377] ? intel_vga_disable+0xb4/0x1b0 [i915]
[ 75.924306][ T377] intel_display_driver_probe_nogem+0x1f2/0x2f0 [i915]
[ 75.931534][ T377] i915_driver_probe+0x301/0x7f0 [i915]
[ 75.937450][ T377] ? __pfx_i915_driver_probe+0x10/0x10 [i915]
[ 75.943840][ T377] ? drm_privacy_screen_get+0x1b4/0x1f0 [drm]
[ 75.949954][ T377] ? intel_display_driver_probe_defer+0x4b/0x60 [i915]
[ 75.957193][ T377] ? i915_pci_probe+0x149/0x210 [i915]
[ 75.963002][ T377] ? __pfx_i915_pci_probe+0x10/0x10 [i915]
[ 75.969128][ T377] local_pci_probe+0x72/0xd0
[ 75.973650][ T377] pci_call_probe+0xfc/0x2a0
[ 75.978165][ T377] ? __pfx_pci_call_probe+0x10/0x10
[ 75.983305][ T377] ? pci_match_device+0x1c0/0x230
[ 75.988272][ T377] ? pci_match_device+0x1d8/0x230
[ 75.993233][ T377] pci_device_probe+0x9d/0x150
[ 75.997936][ T377] ? driver_sysfs_add+0xb0/0x130
[ 76.002830][ T377] really_probe+0x13b/0x4e0
[ 76.007275][ T377] __driver_probe_device+0xc8/0x1e0
[ 76.012414][ T377] driver_probe_device+0x4a/0xf0
[ 76.017294][ T377] __driver_attach+0x136/0x290
[ 76.021995][ T377] ? __pfx___driver_attach+0x10/0x10
[ 76.027210][ T377] bus_for_each_dev+0xd0/0x140
[ 76.031917][ T377] ? __pfx_bus_for_each_dev+0x10/0x10
[ 76.037233][ T377] ? bus_add_driver+0x17a/0x320
[ 76.042028][ T377] bus_add_driver+0x19a/0x320
[ 76.046636][ T377] driver_register+0x9c/0x1c0
[ 76.051245][ T377] i915_init+0x21/0xe0 [i915]
[ 76.056364][ T377] ? __pfx_i915_init+0x10/0x10 [i915]
[ 76.062066][ T377] do_one_initcall+0x8e/0x250
[ 76.066678][ T377] ? __pfx_do_one_initcall+0x10/0x10
[ 76.071896][ T377] ? kasan_unpoison+0x23/0x50
[ 76.076499][ T377] ? __kasan_slab_alloc+0x2f/0x70
[ 76.081447][ T377] ? rcu_is_watching+0x1c/0x50
[ 76.086149][ T377] ? __kmalloc_cache_noprof+0x2c4/0x380
[ 76.091631][ T377] ? rcu_is_watching+0x1c/0x50
[ 76.096329][ T377] ? kasan_unpoison+0x23/0x50
[ 76.100954][ T377] do_init_module+0x13a/0x3e0
[ 76.105561][ T377] init_module_from_file+0xcf/0x130
[ 76.110688][ T377] ? __pfx_init_module_from_file+0x10/0x10
[ 76.116435][ T377] ? __lock_release+0x130/0x260
[ 76.121821][ T377] ? idempotent_init_module+0x456/0x470
[ 76.127317][ T377] ? idempotent_init_module+0x456/0x470
[ 76.132795][ T377] ? do_raw_spin_unlock+0x83/0xf0
[ 76.137760][ T377] idempotent_init_module+0x1b1/0x470
[ 76.143067][ T377] ? __pfx_idempotent_init_module+0x10/0x10
[ 76.148885][ T377] ? __seccomp_filter+0x101/0x730
[ 76.153855][ T377] ? cap_capable+0x9f/0xd0
[ 76.158197][ T377] ? security_capable+0x49/0xf0
[ 76.162992][ T377] __x64_sys_finit_module+0x78/0xd0
[ 76.168126][ T377] do_syscall_64+0x8c/0x170
[ 76.172562][ T377] ? lockdep_hardirqs_on_prepare+0x131/0x200
[ 76.178480][ T377] ? syscall_exit_to_user_mode+0xa2/0x2a0
[ 76.184143][ T377] ? do_syscall_64+0x98/0x170
[ 76.188758][ T377] ? ksys_read+0xdc/0x170
[ 76.193029][ T377] ? __pfx_ksys_read+0x10/0x10
[ 76.197721][ T377] ? __pfx___seccomp_filter+0x10/0x10
[ 76.203026][ T377] ? mark_held_locks+0x24/0x90
[ 76.207724][ T377] ? lockdep_hardirqs_on_prepare+0x131/0x200
[ 76.213636][ T377] ? syscall_exit_to_user_mode+0xa2/0x2a0
[ 76.219287][ T377] ? do_syscall_64+0x98/0x170
[ 76.223898][ T377] ? mark_held_locks+0x24/0x90
[ 76.228599][ T377] ? lockdep_hardirqs_on_prepare+0x131/0x200
[ 76.234514][ T377] ? syscall_exit_to_user_mode+0xa2/0x2a0
[ 76.240174][ T377] ? do_syscall_64+0x98/0x170
[ 76.244781][ T377] ? lockdep_hardirqs_on_prepare+0x131/0x200
[ 76.250698][ T377] ? syscall_exit_to_user_mode+0xa2/0x2a0
[ 76.256359][ T377] ? do_syscall_64+0x98/0x170
[ 76.260965][ T377] ? __pfx_ksys_read+0x10/0x10
[ 76.265660][ T377] ? mark_held_locks+0x24/0x90
[ 76.270371][ T377] ? lockdep_hardirqs_on_prepare+0x131/0x200
[ 76.276280][ T377] ? syscall_exit_to_user_mode+0xa2/0x2a0
[ 76.281940][ T377] ? do_syscall_64+0x98/0x170
[ 76.286542][ T377] ? clear_bhb_loop+0x25/0x80
[ 76.291148][ T377] ? clear_bhb_loop+0x25/0x80
[ 76.295752][ T377] ? clear_bhb_loop+0x25/0x80
[ 76.300364][ T377] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 76.306191][ T377] RIP: 0033:0x7f0aed521719
[ 76.310543][ T377] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b7 06 0d 00 f7 d8 64 89 01 48
[ 76.330135][ T377] RSP: 002b:00007ffee75cdb88 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 76.338496][ T377] RAX: ffffffffffffffda RBX: 0000563966406a10 RCX: 00007f0aed521719
[ 76.346406][ T377] RDX: 0000000000000000 RSI: 00007f0aed6b4efd RDI: 0000000000000014
[ 76.354322][ T377] RBP: 00007f0aed6b4efd R08: 0000000000000000 R09: 00005639663cee60
[ 76.362242][ T377] R10: 0000000000000014 R11: 0000000000000246 R12: 0000000000020000
[ 76.370158][ T377] R13: 0000000000000000 R14: 0000563966417500 R15: 00007ffee75cddc0
[ 76.378097][ T377] </TASK>
[ 76.381044][ T377] irq event stamp: 118993
[ 76.385295][ T377] hardirqs last enabled at (119007): [<ffffffff8125e472>] __up_console_sem+0x52/0x60
[ 76.394797][ T377] hardirqs last disabled at (119026): [<ffffffff8125e457>] __up_console_sem+0x37/0x60
[ 76.404286][ T377] softirqs last enabled at (119020): [<ffffffff81153515>] handle_softirqs+0x255/0x370
[ 76.413859][ T377] softirqs last disabled at (119015): [<ffffffff81153732>] __irq_exit_rcu+0xf2/0x110
[ 76.423251][ T377] ---[ end trace 0000000000000000 ]---
[ 76.457822][ T377] [drm] Initialized i915 1.6.0 for 0000:00:02.0 on minor 0
[ 76.512348][ T377] ACPI: video: Video Device [GFX0] (multi-head: yes rom: no post: no)
[ 76.531042][ T377] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input5
[ 76.602276][ T377] i915 0000:00:02.0: [drm] Cannot find any crtc or sizes
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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