unreferenced object in kmemleak #1078
Description
I got an error:
# cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff979c19298440 (size 32):
comm "bumblebeed", pid 15450, jiffies 4294694353 (age 8127.681s)
hex dump (first 32 bytes):
5c 5f 53 42 5f 2e 50 43 49 30 2e 47 50 31 37 2e \_SB_.PCI0.GP17.
56 47 41 5f 00 00 00 00 00 00 00 00 00 00 00 00 VGA_............
backtrace:
[<0000000064e54179>] acpi_ut_initialize_buffer+0x36/0x6b
[<000000004aca805b>] acpi_ns_handle_to_pathname+0x4d/0x72
[<0000000049979e1a>] acpi_get_name+0x58/0x7c
[<0000000002ecd249>] 0xffffffffc032b70d
[<000000003551212e>] 0xffffffffc032b94c
[<0000000072714275>] 0xffffffffc033131b
[<000000009e0690cb>] do_one_initcall+0x57/0x200
[<00000000381878d9>] do_init_module+0x87/0x2a0
[<000000008ad02371>] __do_sys_finit_module+0xb5/0x120
[<0000000013d803ea>] do_syscall_64+0x33/0x80
[<000000005f189bb5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
unreferenced object 0xffff979c19298220 (size 32):
comm "bumblebeed", pid 15450, jiffies 4294694353 (age 8127.681s)
hex dump (first 32 bytes):
5c 5f 53 42 5f 2e 50 43 49 30 2e 47 50 31 37 2e \_SB_.PCI0.GP17.
56 47 41 5f 00 00 00 00 00 00 00 00 00 00 00 00 VGA_............
backtrace:
[<0000000064e54179>] acpi_ut_initialize_buffer+0x36/0x6b
[<000000004aca805b>] acpi_ns_handle_to_pathname+0x4d/0x72
[<0000000049979e1a>] acpi_get_name+0x58/0x7c
[<0000000002ecd249>] 0xffffffffc032b70d
[<000000003551212e>] 0xffffffffc032b94c
[<0000000072cc7276>] 0xffffffffc033137f
[<000000009e0690cb>] do_one_initcall+0x57/0x200
[<00000000381878d9>] do_init_module+0x87/0x2a0
[<000000008ad02371>] __do_sys_finit_module+0xb5/0x120
[<0000000013d803ea>] do_syscall_64+0x33/0x80
[<000000005f189bb5>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
# dmesg | grep -i PCI0.GP17
[ 27.223546] bbswitch: Found discrete VGA device 0000:05:00.0: \_SB_.PCI0.GP17.VGA_
[ 27.223576] bbswitch: failed to evaluate \_SB_.PCI0.GP17.VGA_._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x0 {0x00,0x00,0x00,0x00}: AE_NOT_FOUND
[ 27.223591] bbswitch: failed to evaluate \_SB_.PCI0.GP17.VGA_._DSM {0xA0,0xA0,0x95,0x9D,0x60,0x00,0x48,0x4D,0xB3,0x4D,0x7E,0x5F,0xEA,0x12,0x9F,0xD4} 0x102 0x0 {0x00,0x00,0x00,0x00}: AE_NOT_FOUND
# dmesg | grep -i bbswitch
[ 27.223525] bbswitch: version 0.8
[ 27.223542] bbswitch: Found discrete VGA device 0000:01:00.0: \_SB_.PCI0.GPP0.PEGP
[ 27.223546] bbswitch: Found discrete VGA device 0000:05:00.0: \_SB_.PCI0.GP17.VGA_
[ 27.223576] bbswitch: failed to evaluate \_SB_.PCI0.GP17.VGA_._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x0 {0x00,0x00,0x00,0x00}: AE_NOT_FOUND
[ 27.223591] bbswitch: failed to evaluate \_SB_.PCI0.GP17.VGA_._DSM {0xA0,0xA0,0x95,0x9D,0x60,0x00,0x48,0x4D,0xB3,0x4D,0x7E,0x5F,0xEA,0x12,0x9F,0xD4} 0x102 0x0 {0x00,0x00,0x00,0x00}: AE_NOT_FOUND
[ 27.223592] bbswitch: No suitable _DSM call found.
# dmesg -l err,warn | grep -v VBox | grep -v xfs | grep -v rtc | grep -v ELAN
[ 1.394441] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCI0.GPP1.WLAN], AE_NOT_FOUND (20201113/dswload2-162)
[ 1.394457] ACPI Error: AE_NOT_FOUND, During name lookup/catalog (20201113/psobject-220)
[ 1.831431] Expanded resource Reserved due to conflict with PCI Bus 0000:00
[ 2.056303] pci 0000:00:00.2: can't derive routing for PCI INT A
[ 2.056305] pci 0000:00:00.2: PCI INT A: not connected
[ 2.057526] PPR X2APIC NX GT IA GA PC GA_vAPIC
[ 2.080444] DLM installed
[ 2.159607] ACPI Error: AE_NOT_FOUND, While resolving a named reference package element - \_PR_.P000 (20201113/dspkginit-438)
[ 2.160273] ACPI: Invalid passive threshold
[ 2.589492] r8169 0000:02:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 2.642741] usb: port power management may be unreliable
[ 2.664015] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp
[ 8.228772] nvidia: loading out-of-tree module taints kernel.
[ 8.228804] nvidia: module license 'NVIDIA' taints kernel.
[ 8.228807] Disabling lock debugging due to kernel taint
[ 8.373428] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 460.67 Thu Mar 11 00:11:45 UTC 2021
[ 10.619821] ================================================================================
[ 10.619824] UBSAN: shift-out-of-bounds in drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_device_queue_manager.c:1140:32
[ 10.619828] shift exponent 64 is too large for 64-bit type 'long long unsigned int'
[ 10.619831] CPU: 0 PID: 3675 Comm: udevd Tainted: P OE T 5.11.15-gentoo-x86_64 #2
[ 10.619835] Hardware name: HP HP Pavilion Gaming Laptop 15-ec1xxx/87B1, BIOS F.20 11/04/2020
[ 10.619837] Call Trace:
[ 10.619840] dump_stack+0x77/0x97
[ 10.619847] ubsan_epilogue+0x5/0x40
[ 10.619850] __ubsan_handle_shift_out_of_bounds.cold+0x61/0xed
[ 10.619854] initialize_cpsch.cold+0x30/0x35 [amdgpu]
[ 10.620242] device_queue_manager_init+0x207/0x3e0 [amdgpu]
[ 10.620580] kgd2kfd_device_init.cold+0x168/0x373 [amdgpu]
[ 10.620957] amdgpu_amdkfd_device_init+0x145/0x180 [amdgpu]
[ 10.621284] amdgpu_device_ip_init+0x378/0x3a4 [amdgpu]
[ 10.621662] amdgpu_device_init.cold+0x429/0x735 [amdgpu]
[ 10.622026] amdgpu_driver_load_kms+0x59/0x1e0 [amdgpu]
[ 10.622317] amdgpu_pci_probe+0xf8/0x180 [amdgpu]
[ 10.622600] local_pci_probe+0x42/0x80
[ 10.622606] ? _cond_resched+0x16/0x40
[ 10.622610] pci_call_probe+0x5a/0x120
[ 10.622614] ? kernfs_create_link+0x5d/0xa0
[ 10.622618] pci_device_probe+0xb8/0x100
[ 10.622621] really_probe+0x104/0x480
[ 10.622624] driver_probe_device+0xcd/0xe0
[ 10.622627] device_driver_attach+0xc0/0xe0
[ 10.622630] __driver_attach+0x8a/0x160
[ 10.622633] ? device_driver_attach+0xe0/0xe0
[ 10.622635] ? device_driver_attach+0xe0/0xe0
[ 10.622637] bus_for_each_dev+0x89/0xe0
[ 10.622642] bus_add_driver+0x12b/0x200
[ 10.622646] driver_register+0x8f/0xe0
[ 10.622649] ? 0xffffffffc24a1000
[ 10.622651] do_one_initcall+0x57/0x200
[ 10.622657] do_init_module+0x87/0x2a0
[ 10.622662] __do_sys_init_module+0x13c/0x1c0
[ 10.622667] do_syscall_64+0x33/0x80
[ 10.622672] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 10.622676] RIP: 0033:0x7fb4f57a883a
[ 10.622680] Code: 48 8b 0d 29 c6 0b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 af 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d f6 c5 0b 00 f7 d8 64 89 01 48
[ 10.622683] RSP: 002b:00007ffc9b026ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
[ 10.622687] RAX: ffffffffffffffda RBX: 00005600180e7b10 RCX: 00007fb4f57a883a
[ 10.622689] RDX: 00005600180d5c00 RSI: 0000000001069d59 RDI: 00007fb4f23bc010
[ 10.622691] RBP: 00007fb4f23bc010 R08: 0000000000000000 R09: 00007fb4f3425d68
[ 10.622693] R10: 0000000000008000 R11: 0000000000000246 R12: 00005600180d5c00
[ 10.622695] R13: 00005600180dbe70 R14: 0000000000000000 R15: 00005600181089a0
[ 10.622713] ================================================================================
[ 11.646107] amdgpu 0000:05:00.0: amdgpu: Unsupported power profile mode 0 on RENOIR
[ 26.135526] ================================================================================
[ 26.135532] UBSAN: array-index-out-of-bounds in drivers/net/wireless/realtek/rtw88/phy.c:1661:35
[ 26.135538] index 5 is out of range for type 'u8 [5]'
[ 26.135541] CPU: 2 PID: 74 Comm: kworker/u32:2 Tainted: P OE T 5.11.15-gentoo-x86_64 #2
[ 26.135546] Hardware name: HP HP Pavilion Gaming Laptop 15-ec1xxx/87B1, BIOS F.20 11/04/2020
[ 26.135550] Workqueue: phy0 ieee80211_scan_work
[ 26.135560] Call Trace:
[ 26.135563] dump_stack+0x77/0x97
[ 26.135571] ubsan_epilogue+0x5/0x40
[ 26.135575] __ubsan_handle_out_of_bounds.cold+0x43/0x48
[ 26.135580] rtw_get_tx_power_params+0x70c/0xa60 [rtw88_core]
[ 26.135600] ? check_hw_ready+0x4f/0xa0 [rtw88_core]
[ 26.135616] rtw_phy_get_tx_power_index+0x4b/0xe0 [rtw88_core]
[ 26.135632] rtw_phy_set_tx_power_level+0xd2/0x1a0 [rtw88_core]
[ 26.135648] rtw_set_channel+0xc1/0x120 [rtw88_core]
[ 26.135664] rtw_ops_config+0x87/0xc0 [rtw88_core]
[ 26.135679] ieee80211_hw_config+0x84/0x100
[ 26.135683] ieee80211_scan_state_set_channel+0x81/0x180
[ 26.135688] ieee80211_scan_work+0x19f/0x2a0
[ 26.135693] process_one_work+0x1f0/0x3a0
[ 26.135700] worker_thread+0x4f/0x320
[ 26.135704] ? process_one_work+0x3a0/0x3a0
[ 26.135708] kthread+0x120/0x140
[ 26.135713] ? __kthread_bind_mask+0x60/0x60
[ 26.135716] ret_from_fork+0x22/0x30
[ 26.135723] ================================================================================
[ 27.223576] bbswitch: failed to evaluate \_SB_.PCI0.GP17.VGA_._DSM {0xF8,0xD8,0x86,0xA4,0xDA,0x0B,0x1B,0x47,0xA7,0x2B,0x60,0x42,0xA6,0xB5,0xBE,0xE0} 0x100 0x0 {0x00,0x00,0x00,0x00}: AE_NOT_FOUND
[ 27.223591] bbswitch: failed to evaluate \_SB_.PCI0.GP17.VGA_._DSM {0xA0,0xA0,0x95,0x9D,0x60,0x00,0x48,0x4D,0xB3,0x4D,0x7E,0x5F,0xEA,0x12,0x9F,0xD4} 0x102 0x0 {0x00,0x00,0x00,0x00}: AE_NOT_FOUND
[ 27.223592] bbswitch: No suitable _DSM call found.
[ 27.440040] ACPI Warning: \_SB.PCI0.GPP0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20201113/nsarguments-61)
[ 28.442823] ================================================================================
[ 28.442828] UBSAN: shift-out-of-bounds in drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn21/display_rq_dlg_calc_21.c:288:38
[ 28.442833] shift exponent 4294966273 is too large for 32-bit type 'int'
[ 28.442837] CPU: 2 PID: 15336 Comm: X Tainted: P OE T 5.11.15-gentoo-x86_64 #2
[ 28.442841] Hardware name: HP HP Pavilion Gaming Laptop 15-ec1xxx/87B1, BIOS F.20 11/04/2020
[ 28.442843] Call Trace:
[ 28.442845] dump_stack+0x77/0x97
[ 28.442852] ubsan_epilogue+0x5/0x40
[ 28.442855] __ubsan_handle_shift_out_of_bounds.cold+0x61/0xed
[ 28.442859] handle_det_buf_split.isra.0.cold+0x1c/0x4b [amdgpu]
[ 28.443198] dml_rq_dlg_get_rq_params+0x205/0x240 [amdgpu]
[ 28.443523] dml21_rq_dlg_get_dlg_reg+0x194/0x2a0 [amdgpu]
[ 28.443838] ? sched_clock_cpu+0x10/0xe0
[ 28.443845] ? dml21_rq_dlg_get_rq_reg+0x3a0/0x3a0 [amdgpu]
[ 28.444148] dcn20_calculate_dlg_params+0x48b/0x740 [amdgpu]
[ 28.444473] dcn21_validate_bandwidth_fp+0x212/0x380 [amdgpu]
[ 28.444808] dcn21_validate_bandwidth+0x29/0x40 [amdgpu]
[ 28.445127] dc_validate_global_state+0x313/0x4e0 [amdgpu]
[ 28.445451] amdgpu_dm_atomic_check+0x8ed/0x980 [amdgpu]
[ 28.445788] drm_atomic_check_only+0x22e/0x480
[ 28.445796] drm_atomic_commit+0x13/0x60
[ 28.445800] drm_atomic_helper_set_config+0x70/0xc0
[ 28.445814] drm_ioctl_kernel+0xb3/0x100
[ 28.445818] drm_ioctl+0x235/0x420
[ 28.445825] amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[ 28.446069] __x64_sys_ioctl+0x8d/0xc0
[ 28.446074] do_syscall_64+0x33/0x80
[ 28.446079] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 28.446085] RIP: 0033:0x7f1d5342a807
[ 28.446090] Code: 01 75 a5 49 8d 3c 1c e8 f7 fe ff ff 85 c0 78 a6 5b 4c 89 e0 5d 41 5c c3 66 2e 0f 1f 84 00 00 00 00 00 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 29 66 0c 00 f7 d8 64 89 01 48
[ 28.446093] RSP: 002b:00007ffdc26835b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 28.446098] RAX: ffffffffffffffda RBX: 00007ffdc26835f0 RCX: 00007f1d5342a807
[ 28.446100] RDX: 00007ffdc26835f0 RSI: 00000000c06864a2 RDI: 000000000000000f
[ 28.446102] RBP: 00000000c06864a2 R08: 0000000000000000 R09: 00005561ab0b1a70
[ 28.446104] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 28.446106] R13: 000000000000000f R14: 00005561aa5bdc60 R15: 00005561aa778c20
[ 28.446129] ================================================================================
Kernel 5.11.15-gentoo-x86_64
x11-misc/bumblebee 3.2.1_p20210112-r4
sys-power/bbswitch 0.8-r5