https://bugzilla.kernel.org/show_bug.cgi?id=215443

Bug ID: 215443 Summary: [radeon] BUG: Unable to handle kernel data access on read at 0xc007ffffffff9130, Oops: Kernel access of bad area, sig: 11 [#1] Product: Platform Specific/Hardware Version: 2.5 Kernel Version: 5.16-rc7 Hardware: PPC-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: PPC-64 Assignee: platform_ppc-64@kernel-bugs.osdl.org Reporter: erhard_f@mailbox.org CC: dri-devel@lists.freedesktop.org Regression: No

Created attachment 300196 --> https://bugzilla.kernel.org/attachment.cgi?id=300196&action=edit kernel dmesg (kernel 5.16-rc7, Talos II)

[...] BUG: Unable to handle kernel data access on read at 0xc007ffffffff9130 Faulting instruction address: 0xc0080000076a1bb4 Oops: Kernel access of bad area, sig: 11 [#1] BE PAGE_SIZE=4K MMU=Radix SMP NR_CPUS=192 DEBUG_PAGEALLOC NUMA PowerNV Modules linked in: rfkill evdev ecb radeon(+) snd_hda_codec_hdmi xts drm_ttm_helper ttm snd_hda_intel snd_intel_dspcfg ctr i2c_algo_bit snd_hda_codec snd_hwdep xhci_pci cbc ofpart snd_hda_core powernv_flash aes_generic xhci_hcd libaes mtd ibmpowernv snd_pcm vmx_crypto gf128mul opal_prd hwmon snd_timer drm_kms_helper usbcore at24 regmap_i2c sysimgblt usb_common syscopyarea snd sysfillrect fb_sys_fops soundcore lz4 lz4_compress lz4_decompress zram zsmalloc powernv_cpufreq drm fuse drm_panel_orientation_quirks backlight configfs CPU: 0 PID: 281 Comm: kworker/0:3 Not tainted 5.16.0-rc7-TalosII+ #1 Workqueue: events .work_for_cpu_fn NIP: c0080000076a1bb4 LR: c008000008994dd8 CTR: c0080000076a1b80 REGS: c000000011ede950 TRAP: 0300 Not tainted (5.16.0-rc7-TalosII+) MSR: 9000000000009032 <SF,HV,EE,ME,IR,DR,RI> CR: 84048242 XER: 00000006 CFAR: c0080000089bffe8 DAR: c007ffffffff9130 DSISR: 40000000 IRQMASK: 0 GPR00: c008000008994dd8 c000000011edebf0 c008000000000000 0000000000000001 GPR04: c0080000076dfe28 0000000000000038 0000000000000002 0000000000024414 GPR08: 0000000000000001 c008000000000000 c00000002f3e9878 c0080000089bffd0 GPR12: c0080000076a1b80 c0000000033e1000 c000000000132940 0000000000000000 GPR16: 0000000000000000 c00000002f406918 c00800001d9968e0 0000000000000000 GPR20: 0000000000000043 0000000000000000 0000000000000001 c00000002f406800 GPR24: 0000000000000001 c00000000efac000 c000000021a6f2c0 c00000000efac848 GPR28: c000000021a6f980 0000000000000000 0000000000000001 c0000000167a9050 NIP [c0080000076a1bb4] .drm_mode_object_get+0x34/0xc0 [drm] LR [c008000008994dd8] .drm_crtc_helper_set_config+0x378/0xc00 [drm_kms_helper] Call Trace: [c000000011edebf0] [0000000000000898] 0x898 (unreliable) [c000000011edec70] [c008000008994dd8] .drm_crtc_helper_set_config+0x378/0xc00 [drm_kms_helper] [c000000011ededb0] [c00800001d7d29c8] .radeon_crtc_set_config+0x68/0x220 [radeon] [c000000011edee60] [c008000007680ee0] .__drm_mode_set_config_internal+0xc0/0x190 [drm] [c000000011edef00] [c0080000076ba1f8] .drm_client_modeset_commit_locked+0x178/0x270 [drm] [c000000011edefa0] [c0080000076ba328] .drm_client_modeset_commit+0x38/0x80 [drm] [c000000011edf020] [c0080000089bb344] .__drm_fb_helper_restore_fbdev_mode_unlocked+0x114/0x1c0 [drm_kms_helper] [c000000011edf0c0] [c0080000089bb484] .drm_fb_helper_set_par+0x44/0x90 [drm_kms_helper] [c000000011edf140] [c0000000009ac4a4] .fbcon_init+0x594/0x800 [c000000011edf230] [c0000000009eecb8] .visual_init+0x108/0x1c0 [c000000011edf2d0] [c0000000009f25f4] .do_bind_con_driver.isra.0+0x2c4/0x550 [c000000011edf3a0] [c0000000009f2a50] .do_take_over_console+0x1d0/0x300 [c000000011edf480] [c0000000009a8ac4] .do_fbcon_takeover+0xb4/0x1b0 [c000000011edf530] [c00000000099fd9c] .register_framebuffer+0x2ac/0x480 [c000000011edf630] [c0080000089babd4] .__drm_fb_helper_initial_config_and_unlock+0x444/0x830 [drm_kms_helper] [c000000011edf740] [c00800001d7e0278] .radeon_fbdev_init+0xf8/0x180 [radeon] [c000000011edf7d0] [c00800001d7d6560] .radeon_modeset_init+0x8b0/0xe20 [radeon] [c000000011edf8b0] [c00800001d79cce4] .radeon_driver_load_kms+0xc4/0x230 [radeon] [c000000011edf950] [c00800000767c308] .drm_dev_register+0x128/0x2d0 [drm] [c000000011edf9f0] [c00800001d798644] .radeon_pci_probe+0x124/0x1a0 [radeon] [c000000011edfa80] [c0000000009732e0] .local_pci_probe+0x60/0x100 [c000000011edfb10] [c00000000011e260] .work_for_cpu_fn+0x30/0x50 [c000000011edfb90] [c0000000001240b0] .process_one_work+0x2f0/0x830 [c000000011edfc70] [c000000000124840] .worker_thread+0x250/0x4f0 [c000000011edfd50] [c000000000132b00] .kthread+0x1c0/0x1d0 [c000000011edfe10] [c00000000000cdf0] .ret_from_kernel_thread+0x58/0x60 Instruction dump: 2c290000 4d820020 7c0802a6 fbe1fff8 3be30010 f8010010 f821ff81 80c30010 3d220000 80a30000 78c60020 38600001 <e8899130> 48008429 60000000 39200001 ---[ end trace 1bbd44c839d96aca ]---

BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 39s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=7/256 refcnt=9 in-flight: 1802201963:.work_for_cpu_fn BAR(409) pending: .dbs_work_handler, .vmstat_shepherd, .once_deferred, .once_deferred, .once_deferred, .kfree_rcu_monitor workqueue events_power_efficient: flags=0x80 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: .fb_flashcursor workqueue mm_percpu_wq: flags=0x8 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: .vmstat_update workqueue pm: flags=0x4 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: .pm_runtime_work [...]