[zo aug 1 20:24:51 2021] BUG: unable to handle page fault for address: 00003c366982f750 [zo aug 1 20:24:51 2021] #PF: supervisor read access in kernel mode [zo aug 1 20:24:51 2021] #PF: error_code(0x0000) - not-present page [zo aug 1 20:24:51 2021] PGD 0 P4D 0 [zo aug 1 20:24:51 2021] Oops: 0000 [#1] SMP NOPTI [zo aug 1 20:24:51 2021] CPU: 2 PID: 59575 Comm: aconnect Not tainted 5.11.0-25-generic #27-Ubuntu [zo aug 1 20:24:51 2021] Hardware name: HP HP Laptop 17-by2xxx/865A, BIOS F.58 06/16/2020 [zo aug 1 20:24:51 2021] RIP: 0010:check_and_subscribe_port+0x151/0x210 [snd_seq] [zo aug 1 20:24:51 2021] Code: 49 39 c5 0f 84 39 ff ff ff 41 0f b6 3e eb 0c 48 8b 00 49 39 c5 0f 84 27 ff ff ff 48 8d 70 b0 48 8d 48 a0 45 84 c0 48 0f 45 ce <40> 3a 39 75 e0 0f b6 51 01 41 38 56 01 75 d6 0f b6 51 02 41 38 56 [zo aug 1 20:24:51 2021] RSP: 0018:ffffa57dc9e03cf8 EFLAGS: 00010246 [zo aug 1 20:24:51 2021] RAX: 00003c366982f7b0 RBX: 0000000000000000 RCX: 00003c366982f750 [zo aug 1 20:24:51 2021] RDX: 0000000000000089 RSI: 00003c366982f760 RDI: 0000000000000080 [zo aug 1 20:24:51 2021] RBP: ffffa57dc9e03d38 R08: 0000000000000000 R09: ffff8945226312c0 [zo aug 1 20:24:51 2021] R10: ffff89458b7dda00 R11: ffff89460f08d270 R12: ffff894522631200 [zo aug 1 20:24:51 2021] R13: ffff8945226312c0 R14: ffff894506dd2080 R15: ffff8945226312d8 [zo aug 1 20:24:51 2021] FS: 00007f7fd9633480(0000) GS:ffff894756500000(0000) knlGS:0000000000000000 [zo aug 1 20:24:51 2021] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [zo aug 1 20:24:51 2021] CR2: 00003c366982f750 CR3: 00000001d8318006 CR4: 00000000003706e0 [zo aug 1 20:24:51 2021] Call Trace: [zo aug 1 20:24:51 2021] snd_seq_port_connect+0x113/0x180 [snd_seq] [zo aug 1 20:24:51 2021] snd_seq_ioctl_subscribe_port+0xb9/0x180 [snd_seq] [zo aug 1 20:24:51 2021] ? snd_seq_port_get_subscription+0xbb/0xd0 [snd_seq] [zo aug 1 20:24:51 2021] ? __check_object_size.part.0+0x3a/0x150 [zo aug 1 20:24:51 2021] snd_seq_ioctl+0xe8/0x1b0 [snd_seq] [zo aug 1 20:24:51 2021] __x64_sys_ioctl+0x91/0xc0 [zo aug 1 20:24:51 2021] do_syscall_64+0x38/0x90 [zo aug 1 20:24:51 2021] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [zo aug 1 20:24:51 2021] RIP: 0033:0x7f7fd98b8ecb [zo aug 1 20:24:51 2021] Code: ff ff ff 85 c0 79 8b 49 c7 c4 ff ff ff ff 5b 5d 4c 89 e0 41 5c c3 66 0f 1f 84 00 00 00 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 6d 1f 0d 00 f7 d8 64 89 01 48 [zo aug 1 20:24:51 2021] RSP: 002b:00007ffdc3e3f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [zo aug 1 20:24:51 2021] RAX: ffffffffffffffda RBX: 00007f7fd998b354 RCX: 00007f7fd98b8ecb [zo aug 1 20:24:51 2021] RDX: 00007ffdc3e3f050 RSI: 0000000040505330 RDI: 0000000000000003 [zo aug 1 20:24:51 2021] RBP: 00007ffdc3e3f120 R08: 00000000ffffffff R09: 0000000000000000 [zo aug 1 20:24:51 2021] R10: 00007f7fd993dac0 R11: 0000000000000246 R12: 00007ffdc3e3f050 [zo aug 1 20:24:51 2021] R13: 00007ffdc3e3f0de R14: 0000000000000000 R15: 00007ffdc3e3f0dc [zo aug 1 20:24:51 2021] Modules linked in: snd_hrtimer snd_usb_audio snd_usbmidi_lib snd_seq_dummy ch341 usbserial ccm xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp nft_compat nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_counter nf_tables libcrc32c nfnetlink bridge stp llc rfcomm cmac algif_hash algif_skcipher af_alg bnep binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi snd_sof_pci snd_sof_intel_hda_common snd_hda_codec_realtek snd_soc_hdac_hda snd_hda_codec_generic snd_sof_intel_hda snd_sof_intel_byt snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi ledtrig_audio snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation soundwire_cadence snd_hda_codec snd_hda_core snd_hwdep soundwire_bus snd_soc_core snd_compress ac97_bus snd_pcm_dmaengine snd_pcm mei_hdcp rtw88_8723de rtw88_8723d snd_seq_midi x86_pkg_temp_thermal intel_powerclamp snd_seq_midi_event coretemp intel_rapl_msr rtw88_pci [zo aug 1 20:24:51 2021] kvm_intel snd_rawmidi rtw88_core kvm uvcvideo videobuf2_vmalloc rapl intel_cstate mac80211 videobuf2_memops snd_seq joydev btusb btrtl videobuf2_v4l2 snd_seq_device snd_timer btbcm input_leds btintel videobuf2_common videodev hp_wmi efi_pstore mc sparse_keymap serio_raw snd wmi_bmof intel_wmi_thunderbolt cfg80211 mei_me bluetooth soundcore ee1004 libarc4 processor_thermal_device processor_thermal_rfim processor_thermal_mbox mei ecdh_generic processor_thermal_rapl intel_rapl_common ecc intel_pch_thermal int340x_thermal_zone intel_soc_dts_iosf acpi_pad hp_wireless int3400_thermal acpi_tad acpi_thermal_rel mac_hid sch_fq_codel msr parport_pc ppdev lp parport sunrpc ip_tables x_tables autofs4 dm_crypt i915 crct10dif_pclmul crc32_pclmul i2c_algo_bit ghash_clmulni_intel aesni_intel drm_kms_helper crypto_simd syscopyarea cryptd sysfillrect glue_helper sysimgblt fb_sys_fops cec psmouse nvme rc_core intel_lpss_pci intel_lpss nvme_core i2c_i801 r8169 idma64 i2c_smbus ahci realtek [zo aug 1 20:24:51 2021] libahci drm virt_dma xhci_pci xhci_pci_renesas wmi pinctrl_cannonlake video [zo aug 1 20:24:51 2021] CR2: 00003c366982f750 [zo aug 1 20:24:51 2021] ---[ end trace 000787e3cd09f39d ]--- [zo aug 1 20:24:52 2021] RIP: 0010:check_and_subscribe_port+0x151/0x210 [snd_seq] [zo aug 1 20:24:52 2021] Code: 49 39 c5 0f 84 39 ff ff ff 41 0f b6 3e eb 0c 48 8b 00 49 39 c5 0f 84 27 ff ff ff 48 8d 70 b0 48 8d 48 a0 45 84 c0 48 0f 45 ce <40> 3a 39 75 e0 0f b6 51 01 41 38 56 01 75 d6 0f b6 51 02 41 38 56 [zo aug 1 20:24:52 2021] RSP: 0018:ffffa57dc9e03cf8 EFLAGS: 00010246 [zo aug 1 20:24:52 2021] RAX: 00003c366982f7b0 RBX: 0000000000000000 RCX: 00003c366982f750 [zo aug 1 20:24:52 2021] RDX: 0000000000000089 RSI: 00003c366982f760 RDI: 0000000000000080 [zo aug 1 20:24:52 2021] RBP: ffffa57dc9e03d38 R08: 0000000000000000 R09: ffff8945226312c0 [zo aug 1 20:24:52 2021] R10: ffff89458b7dda00 R11: ffff89460f08d270 R12: ffff894522631200 [zo aug 1 20:24:52 2021] R13: ffff8945226312c0 R14: ffff894506dd2080 R15: ffff8945226312d8 [zo aug 1 20:24:52 2021] FS: 00007f7fd9633480(0000) GS:ffff894756500000(0000) knlGS:0000000000000000 [zo aug 1 20:24:52 2021] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [zo aug 1 20:24:52 2021] CR2: 00003c366982f750 CR3: 00000001d8318006 CR4: 00000000003706e0