https://bugzilla.kernel.org/show_bug.cgi?id=213373

Bug ID: 213373 Summary: [drm] [radeon] memory leak at parsing radeon_atombios_parse_power_table Product: Drivers Version: 2.5 Kernel Version: 5.13-rc5 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: erhard_f@mailbox.org Regression: No

Created attachment 297247 --> https://bugzilla.kernel.org/attachment.cgi?id=297247&action=edit output of /sys/kernel/debug/kmemleak

Radeon driver on this machine was defunct from 5.6.x on until the issue was fixed in bug #211537. What remains after the fix is this memory leak:

unreferenced object 0xffff88810e6c3dc8 (size 96): comm "systemd-udevd", pid 136, jiffies 4294895831 (age 1145.117s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 40 56 fe 08 80 88 ff ff ........@V...... 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000010cd8f43>] __kmalloc+0x163/0x1d4 [<00000000f14786c6>] radeon_atombios_parse_power_table_1_3+0x43f/0x1b1f [radeon] [<00000000638c7538>] radeon_atombios_get_power_modes+0x144/0x1888 [radeon] [<00000000db824f7d>] radeon_pm_init+0xffd/0x18cc [radeon] [<000000007dfbb45f>] rs690_init+0x76e/0x84a [radeon] [<0000000035475290>] radeon_device_init+0x1c1a/0x21c1 [radeon] [<00000000f4096cf8>] radeon_driver_load_kms+0xf5/0x30b [radeon] [<00000000b3f3c46b>] drm_dev_register+0x255/0x4a0 [drm] [<00000000da8d532e>] radeon_pci_probe+0x246/0x2f6 [radeon] [<00000000667a4010>] pci_device_probe+0x1aa/0x294 [<00000000435523ff>] really_probe+0x30e/0x850 [<0000000016679ebc>] driver_probe_device+0x112/0x161 [<00000000e75e3390>] device_driver_attach+0xc1/0xf8 [<0000000078c4dcd6>] __driver_attach+0x16b/0x172 [<000000007d3f0ac0>] bus_for_each_dev+0xfa/0x146 [<000000008ee66f7b>] bus_add_driver+0x2b3/0x447 unreferenced object 0xffff888008fe5640 (size 64): comm "systemd-udevd", pid 136, jiffies 4294895831 (age 1145.117s) hex dump (first 32 bytes): 00 00 00 00 40 9c 00 00 00 00 00 00 00 00 00 00 ....@........... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000006edcc7c8>] kmem_cache_alloc_trace+0x10f/0x15e [<0000000079a5480d>] radeon_atombios_parse_power_table_1_3+0x546/0x1b1f [radeon] [<00000000638c7538>] radeon_atombios_get_power_modes+0x144/0x1888 [radeon] [<00000000db824f7d>] radeon_pm_init+0xffd/0x18cc [radeon] [<000000007dfbb45f>] rs690_init+0x76e/0x84a [radeon] [<0000000035475290>] radeon_device_init+0x1c1a/0x21c1 [radeon] [<00000000f4096cf8>] radeon_driver_load_kms+0xf5/0x30b [radeon] [<00000000b3f3c46b>] drm_dev_register+0x255/0x4a0 [drm] [<00000000da8d532e>] radeon_pci_probe+0x246/0x2f6 [radeon] [<00000000667a4010>] pci_device_probe+0x1aa/0x294 [<00000000435523ff>] really_probe+0x30e/0x850 [<0000000016679ebc>] driver_probe_device+0x112/0x161 [<00000000e75e3390>] device_driver_attach+0xc1/0xf8 [<0000000078c4dcd6>] __driver_attach+0x16b/0x172 [<000000007d3f0ac0>] bus_for_each_dev+0xfa/0x146 [<000000008ee66f7b>] bus_add_driver+0x2b3/0x447

# lspci -vv -s 01:05.0 01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS690M [Radeon Xpress 1200/1250/1270] (prog-if 00 [VGA controller]) Subsystem: Gateway, Inc. RS690M [Radeon Xpress 1200/1250/1270] Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 64, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 26 Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M] Region 2: Memory at f0100000 (64-bit, non-prefetchable) [size=64K] Region 4: I/O ports at 9400 [size=256] Region 5: Memory at f0000000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at 000c0000 [virtual] [disabled] [size=128K] Capabilities: [50] Power Management version 2 Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-) Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME- Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit+ Address: 00000000fee01004 Data: 0025 Kernel driver in use: radeon Kernel modules: radeon

# inxi -bz System: Kernel: 5.13.0-rc5-E620 x86_64 bits: 64 Console: tty 0 Distro: Gentoo Base System release 2.7 Machine: Type: Laptop System: eMachines product: eMachines E620 v: V1.03 serial: <filter> Mobo: eMachines model: Nile serial: <filter> BIOS: eMachines v: 1.03 date: 09/30/2008 Battery: ID-1: BAT1 charge: N/A condition: N/A CPU: Info: Dual Core AMD Athlon X2 3250e [MCP] speed: 1496 MHz Graphics: Device-1: AMD RS690M [Radeon Xpress 1200/1250/1270] driver: radeon v: kernel Display: server: X.org 1.20.11 driver: ati,radeon unloaded: fbdev,modesetting tty: 104x57 Message: Advanced graphics data unavailable in console for root. Network: Device-1: Qualcomm Atheros AR242x / AR542x Wireless Network Adapter driver: ath5k Device-2: Realtek RTL810xE PCI Express Fast Ethernet driver: r8169