Messages in this thread | | | From | Robert Gadsdon <> | Subject | 5.12-rc1 and -rc2 - BUG/crash after KVM/USB connect/disconnect. | Date | Sat, 6 Mar 2021 13:50:58 -0800 |
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HP Z220 (xeon). Fedora 33 GCC 10.2.1
Boot system, connect via KVM (DVI/USB) and disconnect, then:
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usb 1-1.1.1: USB disconnect, device number 6 usb 1-1.1.1.2: USB disconnect, device number 8 usb 1-1.1.1.4: USB disconnect, device number 9 usb 1-1.1.1.5: clear tt 5 (90d4) error -71 usb 1-1.1.1.5: USB disconnect, device number 11 usb 1-1.1.1.5.4: USB disconnect, device number 12 cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0 BUG: kernel NULL pointer dereference, address: 0000000000000278 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] SMP NOPTI CPU: 0 PID: 2899 Comm: kworker/0:0 Not tainted 5.12.0-rc2 #1 Hardware name: Hewlett-Packard HP Z220 CMT Workstation/1790, BIOS K51 v01.87 06/10/2019 Workqueue: usb_hub_wq hub_event RIP: 0010:gpiodevice_release+0xc/0x70 Code: c0 0f b6 c0 5b c3 85 c0 5b 0f 95 c0 0f b6 c0 c3 0f 0b eb b1 b8 fb ff ff ff 5b c3 0f 1f 00 55 48 8b 6f 78 48 c7 c7 d0 24 13 b7 <48> 8b 95 78 02 00 00 48 8b 85 80 02 00 00 48 89 42 08 48 89 10 8b RSP: 0018:ffffb7b600a3bb10 EFLAGS: 00010286 RAX: ffffffffb6414650 RBX: 00000000ffffffff RCX: 0000000000000282 RDX: ffff8a255a8d6598 RSI: 0000000000000282 RDI: ffffffffb71324d0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000282 R10: 0000000000000001 R11: ffffffffb71646a0 R12: ffff8a254f51a100 R13: ffffffffb7145e60 R14: ffff8a255a811790 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8a284dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000278 CR3: 000000012dd6a003 CR4: 00000000001706f0 Call Trace: device_release+0x2f/0x80 kobject_put+0x63/0xc0 cp210x_disconnect+0x1b/0x30 [cp210x] usb_serial_disconnect+0xe1/0x130 usb_unbind_interface+0x65/0x1c0 __device_release_driver+0x144/0x1f0 device_release_driver+0x1f/0x30 bus_remove_device+0xcd/0x110 device_del+0x185/0x450 ? kobject_put+0x70/0xc0 usb_disable_device+0xac/0x150 usb_disconnect.cold+0x60/0x1a4 usb_disconnect.cold+0x29/0x1a4 usb_disconnect.cold+0x29/0x1a4 hub_event+0x5cf/0x1230 ? __switch_to_asm+0x42/0x70 process_one_work+0x1ea/0x340 worker_thread+0x48/0x3c0 ? rescuer_thread+0x380/0x380 kthread+0x111/0x130 ? __kthread_bind_mask+0x60/0x60 ret_from_fork+0x22/0x30 Modules linked in: rfcomm cmac hid_logitech_hidpp bnep btusb btrtl btbcm btintel bluetooth ecdh_generic ecc hid_logitech_dj cp210x joydev uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_usb_audio videobuf2_common snd_usbmidi_lib videodev snd_rawmidi mc iptable_filter bpfilter sunrpc snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal intel_powerclamp snd_hda_intel coretemp snd_intel_dspcfg snd_hda_codec kvm_intel snd_hda_core snd_hwdep snd_seq kvm snd_seq_device irqbypass at24 snd_pcm rapl hp_wmi snd_timer sparse_keymap iTCO_wdt wmi_bmof rfkill iTCO_vendor_support snd intel_cstate pcspkr i2c_i801 intel_uncore i2c_smbus soundcore lpc_ich wmi drm zram ip_tables x_tables crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel r8169 e1000e fuse CR2: 0000000000000278 ---[ end trace a5b6fc6316be72a4 ]--- RIP: 0010:gpiodevice_release+0xc/0x70 Code: c0 0f b6 c0 5b c3 85 c0 5b 0f 95 c0 0f b6 c0 c3 0f 0b eb b1 b8 fb ff ff ff 5b c3 0f 1f 00 55 48 8b 6f 78 48 c7 c7 d0 24 13 b7 <48> 8b 95 78 02 00 00 48 8b 85 80 02 00 00 48 89 42 08 48 89 10 8b RSP: 0018:ffffb7b600a3bb10 EFLAGS: 00010286 RAX: ffffffffb6414650 RBX: 00000000ffffffff RCX: 0000000000000282 RDX: ffff8a255a8d6598 RSI: 0000000000000282 RDI: ffffffffb71324d0 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000282 R10: 0000000000000001 R11: ffffffffb71646a0 R12: ffff8a254f51a100 R13: ffffffffb7145e60 R14: ffff8a255a811790 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8a284dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000278 CR3: 000000012dd6a003 CR4: 00000000001706f0
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Fault is 100% reproducible. Login/logout no longer works. Hard power cycle required.
No problems with Kernel 5.11.x
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