linux-kernel - Re: kmemleak: Found object by alias at 0xffff888107b65918

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Message-ID: <CADnq5_OfmegA2XzeCuUNq5PmvbQrX6cdn8vPOUMf4x4BQGb5fQ@mail.gmail.com>
Date: Thu, 9 Jan 2025 15:40:59 -0500
From: Alex Deucher <alexdeucher@...il.com>
To: Borislav Petkov <bp@...en8.de>
Cc: Alex Deucher <alexander.deucher@....com>, 
	Christian König <christian.koenig@....com>, 
	Xinhui Pan <Xinhui.Pan@....com>, amd-gfx@...ts.freedesktop.org, 
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: kmemleak: Found object by alias at 0xffff888107b65918

On Thu, Jan 9, 2025 at 3:29 PM Borislav Petkov <bp@...en8.de> wrote:
>
> Hi folks,
>
> this is rc6 + tip/master, machine is Carrizo laptop.

Possibly fixed by this patch?
https://lore.kernel.org/lkml/CAJZ5v0i=ap+w4QZ8f2DsaHY6D=XUEuSNjyQ-2_=DGOLfZjdn+w@mail.gmail.com/T/

Alex

>
> full dmesg attached.
>
> Thx.
>
> ...
> [   13.271015] [drm] DM_PPLIB:    level           : 8
> [   13.271658] [drm] Display Core v3.2.310 initialized on DCE 11.0
> [   13.351651] kmemleak: Found object by alias at 0xffff888107b65918
> [   13.352365] CPU: 0 UID: 0 PID: 1216 Comm: systemd-udevd Not tainted 6.13.0-rc6+ #1
> [   13.352642] Hardware name: HP HP EliteBook 745 G3/807E, BIOS N73 Ver. 01.39 04/16/2019
> [   13.352928] Call Trace:
> [   13.353023]  <TASK>
> [   13.353108]  dump_stack_lvl+0x71/0xa0
> [   13.353257]  __lookup_object+0x80/0x90
> [   13.353403]  delete_object_full+0x39/0xa0
> [   13.353555]  kfree+0x1dc/0x390
> [   13.353676]  dm_helpers_probe_acpi_edid+0xd3/0x130 [amdgpu]
> [   13.355424]  ? __pfx_dm_helpers_probe_acpi_edid+0x10/0x10 [amdgpu]
> [   13.357127]  edid_block_read+0x50/0x100
> [   13.357279]  _drm_do_get_edid+0xe8/0x380
> [   13.357429]  ? __pfx_dm_helpers_probe_acpi_edid+0x10/0x10 [amdgpu]
> [   13.359131]  drm_edid_read_custom+0x2e/0xc0
> [   13.359296]  dm_helpers_read_local_edid+0x83/0x2a0 [amdgpu]
> [   13.360992]  detect_link_and_local_sink+0x1db/0x1190 [amdgpu]
> [   13.362715]  ? lock_acquire+0xe0/0x300
> [   13.362864]  ? amdgpu_dm_init+0x12b5/0x2150 [amdgpu]
> [   13.364528]  ? __mutex_lock+0x7e5/0xd00
> [   13.364680]  ? amdgpu_dm_init+0x12b5/0x2150 [amdgpu]
> [   13.366345]  ? dal_gpio_destroy+0x44/0x70 [amdgpu]
> [   13.368016]  link_detect+0x30/0x530 [amdgpu]
> [   13.369670]  ? dal_gpio_destroy_irq+0x21/0x40 [amdgpu]
> [   13.371364]  ? query_hpd_status+0x60/0x80 [amdgpu]
> [   13.373060]  amdgpu_dm_init+0x12d3/0x2150 [amdgpu]
> [   13.374719]  dm_hw_init+0x1a/0x40 [amdgpu]
> [   13.376349]  ? pp_hw_init+0x16/0x40 [amdgpu]
> [   13.377994]  amdgpu_device_init+0x20d5/0x2720 [amdgpu]
> [   13.379606]  ? _raw_spin_unlock_irqrestore+0x56/0x70
> [   13.379800]  amdgpu_driver_load_kms+0x23/0xc0 [amdgpu]
> [   13.381427]  amdgpu_pci_probe+0x1c9/0x5a0 [amdgpu]
> [   13.383011]  local_pci_probe+0x53/0xb0
> [   13.383159]  pci_device_probe+0xcc/0x1d0
> [   13.383309]  really_probe+0xda/0x390
> [   13.383448]  ? pm_runtime_barrier+0x61/0xb0
> [   13.383606]  ? __pfx___driver_attach+0x10/0x10
> [   13.383772]  __driver_probe_device+0x78/0x150
> [   13.383934]  driver_probe_device+0x2d/0xb0
> [   13.384088]  __driver_attach+0xdc/0x1d0
> [   13.384233]  bus_for_each_dev+0x6a/0xb0
> [   13.384381]  bus_add_driver+0x139/0x260
> [   13.384526]  driver_register+0x55/0x100
> [   13.384671]  ? __pfx_amdgpu_init+0x10/0x10 [amdgpu]
> [   13.386278]  do_one_initcall+0x60/0x2b0
> [   13.386430]  ? __kmalloc_cache_noprof+0x2c5/0x3c0
> [   13.386612]  do_init_module+0x60/0x230
> [   13.386756]  init_module_from_file+0x89/0xc0
> [   13.386920]  idempotent_init_module+0x113/0x320
> [   13.387094]  __x64_sys_finit_module+0x7b/0xf0
> [   13.387257]  do_syscall_64+0x64/0x130
> [   13.387399]  entry_SYSCALL_64_after_hwframe+0x76/0x7e
> [   13.387586] RIP: 0033:0x7f39c5922059
> [   13.387725] 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 8f 1d 0d 00 f7 d8 64 89 01 48
> [   13.388386] RSP: 002b:00007ffc51f9cc18 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
> [   13.388662] RAX: ffffffffffffffda RBX: 0000558cb28bf670 RCX: 00007f39c5922059
> [   13.388919] RDX: 0000000000000000 RSI: 00007f39c5815ded RDI: 0000000000000016
> [   13.389176] RBP: 0000000000020000 R08: 0000000000000000 R09: 0000558cb28b4a68
> [   13.389432] R10: 0000000000000016 R11: 0000000000000246 R12: 00007f39c5815ded
> [   13.389688] R13: 0000000000000000 R14: 0000558cb28baa10 R15: 0000558cb28bf670
> [   13.389949]  </TASK>
>
>
> --
> Regards/Gruss,
>     Boris.
>
> https://people.kernel.org/tglx/notes-about-netiquette