Message-ID: <2203148.PYKUYFuaPT@arborvitaetree>
Date: Tue, 18 Nov 2025 12:23:24 -0500
From: Stephanie Gawroriski <xerthesquirrel@...il.com>
To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
 Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: Linux 6.18-rc6

Hi!

Since rc6 I am getting crashes in JetBrain's Rider backend for CLion, which 
the backend is a C# application specifically, which gives in its logs:

```
Fatal error. System.AccessViolationException: Attempted to read or write 
protected memory. This is often an indication that other memory is corrupt.
```

Unfortunately, I do not see any traces in `dmesg` at all and there is not much 
else useful there. Since this is a closed source application, I cannot do much 
in debugging it unfortunately. It manifests as a never completing analyzation 
pass. Unlike David Wang, I am on an Intel Core i7-1370P on a ThinkPad X1 Yoga 
Gen 8 (with TME) and I have not experienced any crashes with GDB or Go in any 
way, nor other program issues at all. I have not experienced any issues with 
rc3 (which is what I was previously using as I often check for updates every 
so often).

Unrelated to this, after suspending and docking my laptop to my dock, I get 
this now:

[50598.774359] ------------[ cut here ]------------
[50598.774371] kernfs: can not remove 'typec', no directory
[50598.774389] WARNING: CPU: 2 PID: 48932 at fs/kernfs/dir.c:1706 
kernfs_remove_by_name_ns+0xcf/0xe0
[50598.774404] Modules linked in: snd_usb_audio snd_usbmidi_lib snd_rawmidi 
mptcp_diag xsk_diag tcp_diag udp_diag raw_diag inet_diag unix_diag 
af_packet_diag netlink_diag xpad(O) xt_conntrack xt_MASQUERADE xt_set ip_set 
xt_addrtype xfrm_user xfrm_algo snd_seq_dummy snd_hrtimer snd_seq 
snd_seq_device nls_utf8 cifs cifs_md4 dns_resolver netfs iscsi_tcp nft_masq 
libiscsi_tcp libiscsi scsi_transport_iscsi target_core_user uio 
target_core_pscsi target_core_file target_core_iblock iscsi_target_mod 
target_core_mod xt_tcpudp nft_compat x_tables nft_fib_inet nft_fib_ipv4 
nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject 
nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfcomm 
nf_tables qrtr at24 ee1004 bnep snd_ctl_led snd_soc_skl_hda_dsp 
snd_soc_intel_sof_board_helpers snd_soc_intel_hda_dsp_common snd_sof_probes 
vhba(O) snd_hda_codec_intelhdmi br_netfilter snd_hda_codec_alc269 bridge 
snd_hda_scodec_component stp snd_hda_codec_realtek_lib snd_soc_dmic llc 
snd_hda_codec_generic
[50598.774515]  snd_hda_intel pkcs8_key_parser snd_sof_pci_intel_tgl 
snd_sof_pci_intel_cnl snd_sof_intel_hda_generic soundwire_intel 
soundwire_generic_allocation snd_sof_intel_hda_sdw_bpt 
snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink 
snd_sof_intel_hda snd_hda_codec_hdmi soundwire_cadence snd_sof_pci 
snd_sof_xtensa_dsp snd_sof snd_soc_avs snd_sof_utils snd_soc_hda_codec 
snd_soc_acpi_intel_match snd_hda_ext_core snd_soc_acpi_intel_sdca_quirks 
snd_hda_codec uvcvideo nls_ascii snd_soc_acpi snd_hda_core videobuf2_vmalloc 
nls_cp437 crc8 snd_intel_dspcfg btusb uvc intel_uncore_frequency soundwire_bus 
snd_intel_sdw_acpi btmtk hid_sensor_accel_3d hid_sensor_custom_intel_hinge 
hid_sensor_gyro_3d videobuf2_memops intel_uncore_frequency_common snd_soc_sdca 
snd_hwdep btrtl hid_sensor_trigger videobuf2_v4l2 coretemp snd_soc_core btbcm 
intel_pmc_core hid_sensor_iio_common videodev rapl mei_hdcp mei_pxp 
snd_compress btintel pmt_telemetry industrialio_triggered_buffer 
videobuf2_common intel_cstate spi_nor iosm
[50598.774603]  snd_pcm_dmaengine mei_me pmt_discovery bluetooth kfifo_buf mc 
intel_uncore pcspkr mtd wwan snd_pcm mei pmt_class button igen6_edac 
mei_vsc_hw soc_button_array ac acpi_pad industrialio intel_pmc_ssram_telemetry 
acpi_tad snd_timer joydev evdev snd soundcore hid_xpadneo(O) ff_memless 
parport_pc ppdev lp parport efi_pstore nvme_fabrics loop nfnetlink zram 
842_decompress 842_compress autofs4 hid_sensor_custom hid_multitouch psmouse 
i2c_i801 hid_sensor_hub i2c_hid_acpi serio_raw i2c_smbus hid_generic i2c_hid
[50598.774677] CPU: 2 UID: 0 PID: 48932 Comm: kworker/2:1 Tainted: G           
O        6.18.0-rc6 #5 PREEMPT(full) 
[50598.774688] Tainted: [O]=OOT_MODULE
[50598.774691] Hardware name: LENOVO 21HQCTO1WW/21HQCTO1WW, BIOS N3XET62W 
(1.37 ) 07/28/2025
[50598.774696] Workqueue: events ucsi_handle_connector_change
[50598.774708] RIP: 0010:kernfs_remove_by_name_ns+0xcf/0xe0
[50598.774715] Code: 5b 5d 41 5c 41 5d c3 cc cc cc cc 48 89 ef e8 98 1a c0 ff 
b8 fe ff ff ff eb e6 0f 0b eb 9f 48 c7 c7 b0 5e dc 9d e8 21 42 b7 ff <0f> 0b eb e5 
66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
[50598.774721] RSP: 0018:ffffcf1ecce83db8 EFLAGS: 00010282
[50598.774727] RAX: 0000000000000000 RBX: ffff8c645507d400 RCX: 0000000000000027
[50598.774732] RDX: ffff8c709f298a48 RSI: 0000000000000001 RDI: ffff8c709f298a40
[50598.774736] RBP: ffff8c61825ad008 R08: 0000000000000000 R09: ffff8c70df772fe8
[50598.774740] R10: ffff8c70df742fa8 R11: 0000000000000003 R12: ffffffff9dfaadb1
[50598.774743] R13: ffff8c61825ad350 R14: 0000000000000001 R15: ffff8c6182582520
[50598.774746] FS:  0000000000000000(0000) GS:ffff8c70ffd3d000(0000) knlGS:
0000000000000000
[50598.774751] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[50598.774755] CR2: 00007f9af0c6f000 CR3: 000000099464c003 CR4: 
0000000000f72ef0
[50598.774760] PKRU: 55555554
[50598.774763] Call Trace:
[50598.774768]  <TASK>
[50598.774775]  typec_unregister_partner+0x6c/0x110
[50598.774787]  ucsi_unregister_partner+0x103/0x140
[50598.774794]  ucsi_handle_connector_change+0x34d/0x3e0
[50598.774803]  process_one_work+0x18b/0x340
[50598.774811]  worker_thread+0x256/0x3a0
[50598.774818]  ? __pfx_worker_thread+0x10/0x10
[50598.774824]  kthread+0xfc/0x240
[50598.774833]  ? __pfx_kthread+0x10/0x10
[50598.774841]  ? __pfx_kthread+0x10/0x10
[50598.774848]  ret_from_fork+0x1c9/0x200
[50598.774858]  ? __pfx_kthread+0x10/0x10
[50598.774865]  ret_from_fork_asm+0x1a/0x30
[50598.774877]  </TASK>
[50598.774880] ---[ end trace 0000000000000000 ]---
[50598.774885] ------------[ cut here ]------------
[50598.774888] kernfs: can not remove 'typec', no directory
[50598.774899] WARNING: CPU: 2 PID: 48932 at fs/kernfs/dir.c:1706 
kernfs_remove_by_name_ns+0xcf/0xe0
[50598.774907] Modules linked in: snd_usb_audio snd_usbmidi_lib snd_rawmidi 
mptcp_diag xsk_diag tcp_diag udp_diag raw_diag inet_diag unix_diag 
af_packet_diag netlink_diag xpad(O) xt_conntrack xt_MASQUERADE xt_set ip_set 
xt_addrtype xfrm_user xfrm_algo snd_seq_dummy snd_hrtimer snd_seq 
snd_seq_device nls_utf8 cifs cifs_md4 dns_resolver netfs iscsi_tcp nft_masq 
libiscsi_tcp libiscsi scsi_transport_iscsi target_core_user uio 
target_core_pscsi target_core_file target_core_iblock iscsi_target_mod 
target_core_mod xt_tcpudp nft_compat x_tables nft_fib_inet nft_fib_ipv4 
nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject 
nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfcomm 
nf_tables qrtr at24 ee1004 bnep snd_ctl_led snd_soc_skl_hda_dsp 
snd_soc_intel_sof_board_helpers snd_soc_intel_hda_dsp_common snd_sof_probes 
vhba(O) snd_hda_codec_intelhdmi br_netfilter snd_hda_codec_alc269 bridge 
snd_hda_scodec_component stp snd_hda_codec_realtek_lib snd_soc_dmic llc 
snd_hda_codec_generic
[50598.774991]  snd_hda_intel pkcs8_key_parser snd_sof_pci_intel_tgl 
snd_sof_pci_intel_cnl snd_sof_intel_hda_generic soundwire_intel 
soundwire_generic_allocation snd_sof_intel_hda_sdw_bpt 
snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda_mlink 
snd_sof_intel_hda snd_hda_codec_hdmi soundwire_cadence snd_sof_pci 
snd_sof_xtensa_dsp snd_sof snd_soc_avs snd_sof_utils snd_soc_hda_codec 
snd_soc_acpi_intel_match snd_hda_ext_core snd_soc_acpi_intel_sdca_quirks 
snd_hda_codec uvcvideo nls_ascii snd_soc_acpi snd_hda_core videobuf2_vmalloc 
nls_cp437 crc8 snd_intel_dspcfg btusb uvc intel_uncore_frequency soundwire_bus 
snd_intel_sdw_acpi btmtk hid_sensor_accel_3d hid_sensor_custom_intel_hinge 
hid_sensor_gyro_3d videobuf2_memops intel_uncore_frequency_common snd_soc_sdca 
snd_hwdep btrtl hid_sensor_trigger videobuf2_v4l2 coretemp snd_soc_core btbcm 
intel_pmc_core hid_sensor_iio_common videodev rapl mei_hdcp mei_pxp 
snd_compress btintel pmt_telemetry industrialio_triggered_buffer 
videobuf2_common intel_cstate spi_nor iosm
[50598.775061]  snd_pcm_dmaengine mei_me pmt_discovery bluetooth kfifo_buf mc 
intel_uncore pcspkr mtd wwan snd_pcm mei pmt_class button igen6_edac 
mei_vsc_hw soc_button_array ac acpi_pad industrialio intel_pmc_ssram_telemetry 
acpi_tad snd_timer joydev evdev snd soundcore hid_xpadneo(O) ff_memless 
parport_pc ppdev lp parport efi_pstore nvme_fabrics loop nfnetlink zram 
842_decompress 842_compress autofs4 hid_sensor_custom hid_multitouch psmouse 
i2c_i801 hid_sensor_hub i2c_hid_acpi serio_raw i2c_smbus hid_generic i2c_hid
[50598.775119] CPU: 2 UID: 0 PID: 48932 Comm: kworker/2:1 Tainted: G        W  
O        6.18.0-rc6 #5 PREEMPT(full) 
[50598.775127] Tainted: [W]=WARN, [O]=OOT_MODULE
[50598.775129] Hardware name: LENOVO 21HQCTO1WW/21HQCTO1WW, BIOS N3XET62W 
(1.37 ) 07/28/2025
[50598.775132] Workqueue: events ucsi_handle_connector_change
[50598.775141] RIP: 0010:kernfs_remove_by_name_ns+0xcf/0xe0
[50598.775147] Code: 5b 5d 41 5c 41 5d c3 cc cc cc cc 48 89 ef e8 98 1a c0 ff 
b8 fe ff ff ff eb e6 0f 0b eb 9f 48 c7 c7 b0 5e dc 9d e8 21 42 b7 ff <0f> 0b eb e5 
66 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
[50598.775151] RSP: 0018:ffffcf1ecce83db8 EFLAGS: 00010282
[50598.775156] RAX: 0000000000000000 RBX: ffff8c645507d400 RCX: 0000000000000027
[50598.775159] RDX: ffff8c709f298a48 RSI: 0000000000000001 RDI: ffff8c709f298a40
[50598.775162] RBP: ffff8c61825ad008 R08: 0000000000000000 R09: ffff8c70df772fe8
[50598.775165] R10: ffff8c70df742fa8 R11: 0000000000000003 R12: ffffffff9dfaadb1
[50598.775168] R13: ffff8c61825ad350 R14: 0000000000000001 R15: ffff8c6182582520
[50598.775171] FS:  0000000000000000(0000) GS:ffff8c70ffd3d000(0000) knlGS:
0000000000000000
[50598.775175] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[50598.775179] CR2: 00007f9af0c6f000 CR3: 000000099464c003 CR4: 
0000000000f72ef0
[50598.775182] PKRU: 55555554
[50598.775185] Call Trace:
[50598.775187]  <TASK>
[50598.775190]  typec_unregister_partner+0xbf/0x110
[50598.775198]  ucsi_unregister_partner+0x103/0x140
[50598.775205]  ucsi_handle_connector_change+0x34d/0x3e0
[50598.775214]  process_one_work+0x18b/0x340
[50598.775220]  worker_thread+0x256/0x3a0
[50598.775226]  ? __pfx_worker_thread+0x10/0x10
[50598.775232]  kthread+0xfc/0x240
[50598.775239]  ? __pfx_kthread+0x10/0x10
[50598.775247]  ? __pfx_kthread+0x10/0x10
[50598.775254]  ret_from_fork+0x1c9/0x200
[50598.775261]  ? __pfx_kthread+0x10/0x10
[50598.775268]  ret_from_fork_asm+0x1a/0x30
[50598.775280]  </TASK>
[50598.775282] ---[ end trace 0000000000000000 ]---

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