Public bug reported: [ 2.515353] Missing case (val == 65535) [ 2.515366] WARNING: CPU: 3 PID: 478 at drivers/gpu/drm/i915/intel_dram.c:96 skl_dram_get_dimm_info+0x79/0x1b0 [i915] [ 2.515433] Modules linked in: snd_hda_core kvm_intel snd_hwdep nvidia(PO+) libarc4 kvm joydev soundwire_bus nls_iso8859_1 mei_hdcp intel_rapl_msr i915(+) fjes(-) iwlwifi crct10dif_pclmul ghash_clmulni_intel snd_soc_core drm_kms_helper aesni_intel processor_thermal_device snd_compress cec processor_thermal_rfim ac97_bus crypto_simd snd_pcm_dmaengine rc_core i2c_algo_bit cryptd processor_thermal_mbox fb_sys_fops input_leds mei_me thinkpad_acpi glue_helper syscopyarea intel_cstate nvram efi_pstore sysfillrect snd_seq_midi serio_raw wmi_bmof cfg80211 ee1004 ledtrig_audio snd_pcm processor_thermal_rapl ucsi_acpi(+) sysimgblt snd_seq_midi_event mei intel_rapl_common typec_ucsi intel_soc_dts_iosf snd_rawmidi typec snd_seq snd_seq_device snd_timer snd int3403_thermal soundcore int340x_thermal_zone mac_hid intel_hid int3400_thermal sparse_keymap acpi_thermal_rel acpi_pad acpi_tad sch_fq_codel stp llc ip_vs_wrr ip_vs_sh ip_vs_rr ip_vs nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c msr [ 2.515472] parport_pc ppdev lp drm parport ip_tables x_tables autofs4 crc32_pclmul sdhci_pci psmouse cqhci i2c_i801 i2c_smbus sdhci igc nvme thunderbolt xhci_pci nvme_core xhci_pci_renesas wmi video pinctrl_tigerlake [ 2.515484] CPU: 3 PID: 478 Comm: systemd-udevd Tainted: P O 5.11.0-37-generic #41-Ubuntu [ 2.515486] Hardware name: LENOVO 20YUCTO1WW/20YUCTO1WW, BIOS N37ET34W (1.15 ) 09/01/2021 [ 2.515487] RIP: 0010:skl_dram_get_dimm_info+0x79/0x1b0 [i915] [ 2.515534] Code: 0f 84 34 01 00 00 41 f7 c0 00 01 00 00 0f 84 27 01 00 00 41 0f b7 d0 48 c7 c6 b1 6b fd c0 48 c7 c7 b5 6b fd c0 e8 07 1e 7c e1 <0f> 0b 44 0f b7 0b b9 01 00 00 00 31 c0 31 f6 88 43 02 41 c1 ff 09 [ 2.515535] RSP: 0018:ffffbe36011b7980 EFLAGS: 00010282 [ 2.515537] RAX: 0000000000000000 RBX: ffffbe36011b79ec RCX: ffff9b27574d8ac8 [ 2.515538] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff9b27574d8ac0 [ 2.515539] RBP: ffffbe36011b79a8 R08: 0000000000000000 R09: ffffbe36011b7760 [ 2.515540] R10: ffffbe36011b7758 R11: ffffffffa37535e8 R12: 0000000000000000 [ 2.515541] R13: 000000000000004c R14: ffff9b1645580000 R15: 000000000000ffff [ 2.515542] FS: 00007fb8218a08c0(0000) GS:ffff9b27574c0000(0000) knlGS:0000000000000000 [ 2.515544] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.515545] CR2: 00007fb8213ae4e0 CR3: 0000000108a5e006 CR4: 0000000000770ee0 [ 2.515546] PKRU: 55555554 [ 2.515546] Call Trace: [ 2.515549] skl_dram_get_channel_info+0x2e/0x150 [i915] [ 2.515592] skl_dram_get_channels_info+0x6e/0x190 [i915] [ 2.515634] skl_get_dram_info+0x6e/0x100 [i915] [ 2.515667] intel_dram_detect+0x3e/0xd0 [i915] [ 2.515711] i915_driver_hw_probe+0x1cc/0x210 [i915] [ 2.515748] i915_driver_probe+0xe5/0x2f0 [i915] [ 2.515781] ? mutex_lock+0x13/0x40 [ 2.515785] ? acpi_dev_found+0x66/0x70 [ 2.515788] i915_pci_probe+0x58/0x140 [i915] [ 2.515822] local_pci_probe+0x48/0x80 [ 2.515824] pci_call_probe+0x53/0xf0 [ 2.515826] pci_device_probe+0xad/0xf0 [ 2.515827] really_probe+0x23a/0x4a0 [ 2.515830] driver_probe_device+0xe9/0x160 [ 2.515832] device_driver_attach+0xab/0xb0 [ 2.515833] __driver_attach+0x8f/0x150 [ 2.515835] ? device_driver_attach+0xb0/0xb0 [ 2.515836] bus_for_each_dev+0x7e/0xc0 [ 2.515837] driver_attach+0x1e/0x20 [ 2.515839] bus_add_driver+0x135/0x1f0 [ 2.515840] driver_register+0x95/0xf0 [ 2.515842] __pci_register_driver+0x54/0x60 [ 2.515843] i915_init+0x66/0x86 [i915] [ 2.515877] ? 0xffffffffc0c70000 [ 2.515878] do_one_initcall+0x48/0x1d0 [ 2.515881] ? kmem_cache_alloc_trace+0xf6/0x200 [ 2.515883] ? do_init_module+0x28/0x290 [ 2.515886] do_init_module+0x62/0x290 [ 2.515887] load_module+0x6fd/0x780 [ 2.515888] __do_sys_finit_module+0xc2/0x120 [ 2.515890] __x64_sys_finit_module+0x1a/0x20 [ 2.515891] do_syscall_64+0x38/0x90 [ 2.515893] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 2.515894] RIP: 0033:0x7fb821d58f6d [ 2.515896] Code: 28 0d 00 0f 05 eb a9 66 0f 1f 44 00 00 f3 0f 1e fa 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 cb de 0c 00 f7 d8 64 89 01 48 [ 2.515897] RSP: 002b:00007ffdf53714c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 2.515898] RAX: ffffffffffffffda RBX: 000055d26ae00800 RCX: 00007fb821d58f6d [ 2.515899] RDX: 0000000000000000 RSI: 00007fb821efee2d RDI: 0000000000000016 [ 2.515900] RBP: 0000000000020000 R08: 0000000000000000 R09: 000055d269ece89d [ 2.515901] R10: 0000000000000016 R11: 0000000000000246 R12: 00007fb821efee2d [ 2.515901] R13: 0000000000000000 R14: 000055d26ae04ca0 R15: 000055d26ae00800 [ 2.515903] ---[ end trace 5a1250b97f82d1b5 ]---
** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946055 Title: Ubuntu 21.04 drivers/drm/i915 crashes on my laptop! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1946055/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs