Re: qmi_wwan: Null pointer dereference when removing driver
Yup, that patch works perfectly, and yes the device is a multi-tty device. Cheers for everything! On 08/08/17 18:35, Bjørn Mork wrote: Nathaniel Roach <nroac...@gmail.com> writes: Unsure at which point was added, but issue not present in stock debian 4.11 kernel. Running on a Thinkpad X220 with coreboot. I'm building from upstream. When I attempt to remove the qmi_wwan module (which also happens pre-suspend) the rmmod process gets killed, and the following shows in dmesg: [ 59.979791] usb 2-1.4: USB disconnect, device number 4 [ 59.980102] qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-:00:1d.0-1.4, WWAN/QMI device [ 60.006821] BUG: unable to handle kernel NULL pointer dereference at 00e0 [ 60.006879] IP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.006911] PGD 0 [ 60.006911] P4D 0 [ 60.006957] Oops: [#1] SMP [ 60.006978] Modules linked in: fuse(E) ccm(E) rfcomm(E) cmac(E) bnep(E) qmi_wwan(E) cdc_wdm(E) cdc_ether(E) usbnet(E) mii(E) btusb(E) btrtl(E) btbcm(E) btintel(E) bluetooth(E) joydev(E) xpad(E) ecdh_generic(E) ff_memless(E) binfmt_misc(E) snd_hda_codec_hdmi(E) snd_hda_codec_conexant(E) snd_hda_codec_generic(E) arc4(E) iTCO_wdt(E) iTCO_vendor_support(E) intel_rapl(E) x86_pkg_temp_thermal(E) kvm_intel(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) crc32c_intel(E) ghash_clmulni_intel(E) aesni_intel(E) iwlmvm(E) aes_x86_64(E) crypto_simd(E) mac80211(E) cryptd(E) glue_helper(E) snd_hda_intel(E) snd_hda_codec(E) iwlwifi(E) snd_hwdep(E) psmouse(E) snd_hda_core(E) snd_pcm(E) serio_raw(E) sdhci_pci(E) pcspkr(E) snd_timer(E) ehci_pci(E) e1000e(E) i2c_i801(E) ehci_hcd(E) snd(E) sg(E) i915(E) lpc_ich(E) [ 60.007366] ptp(E) usbcore(E) cfg80211(E) mfd_core(E) pps_core(E) shpchp(E) ac(E) battery(E) tpm_tis(E) tpm_tis_core(E) evdev(E) tpm(E) parport_pc(E) ppdev(E) lp(E) parport(E) ip_tables(E) x_tables(E) autofs4(E) [ 60.007474] CPU: 2 PID: 33 Comm: kworker/2:1 Tainted: GE 4.12.3-nr44-normandy-r1500619820+ #1 [ 60.007524] Hardware name: LENOVO 4291LR7/4291LR7, BIOS CBET4000 4.6-810-g50522254fb 07/21/2017 [ 60.007580] Workqueue: usb_hub_wq hub_event [usbcore] [ 60.007609] task: 8c882b716040 task.stack: b8e800d84000 [ 60.007644] RIP: 0010:qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.007678] RSP: 0018:b8e800d87b38 EFLAGS: 00010246 [ 60.007711] RAX: RBX: RCX: [ 60.007752] RDX: 0001 RSI: 8c8824f3f1d0 RDI: 8c8824ef6400 [ 60.007792] RBP: 8c8824ef6400 R08: R09: [ 60.007833] R10: b8e800d87780 R11: 0011 R12: c07ea0e8 [ 60.007874] R13: 8c8824e2e000 R14: 8c8824e2e098 R15: [ 60.007915] FS: () GS:8c883530() knlGS: [ 60.007960] CS: 0010 DS: ES: CR0: 80050033 [ 60.007994] CR2: 00e0 CR3: 000229ca5000 CR4: 000406e0 [ 60.008035] Call Trace: [ 60.008065] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008101] ? device_release_driver_internal+0x154/0x210 [ 60.008135] ? qmi_wwan_unbind+0x6d/0xc0 [qmi_wwan] [ 60.008168] ? usbnet_disconnect+0x6c/0xf0 [usbnet] [ 60.008194] ? qmi_wwan_disconnect+0x87/0xc0 [qmi_wwan] [ 60.008232] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008264] ? device_release_driver_internal+0x154/0x210 [ 60.008296] ? bus_remove_device+0xf5/0x160 [ 60.008324] ? device_del+0x1dc/0x310 [ 60.008355] ? usb_remove_ep_devs+0x1b/0x30 [usbcore] [ 60.008393] ? usb_disable_device+0x93/0x250 [usbcore] [ 60.008430] ? usb_disconnect+0x90/0x260 [usbcore] [ 60.008468] ? hub_event+0x1d9/0x14a0 [usbcore] [ 60.008500] ? process_one_work+0x175/0x370 [ 60.008528] ? worker_thread+0x4a/0x380 [ 60.008555] ? kthread+0xfc/0x130 [ 60.008579] ? process_one_work+0x370/0x370 [ 60.008606] ? kthread_park+0x60/0x60 [ 60.008631] ? ret_from_fork+0x22/0x30 [ 60.008656] Code: 66 0f 1f 44 00 00 66 66 66 66 90 55 48 89 fd 53 48 83 ec 10 48 8b 9f c8 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 83 e0 00 00 00 02 74 51 e8 0d b3 2b cd 85 c0 74 67 48 8b bb [ 60.011925] RIP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] RSP: b8e800d87b38 [ 60.013564] CR2: 00e0 [ 60.022125] ---[ end trace e536b59f45bc0f25 ]--- [ 60.025385] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready If I attempt a second rmmod, the process hangs. If I attempt it on 4.11.x it works as expected: [ 16.897783] fuse init (API version 7.26) [ 68.073552] usbcore: deregistering interface driver qmi_wwan [ 68.075808] qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-:00:1d.0-1.4, WWAN/QMI device [ 72.431403] e1000e: enp0s25 NIC Link is Down So I'm pretty certain it's not coreboot causing the issue. Thanks a lot for the report! Just one question: Does your mode
Re: qmi_wwan: Null pointer dereference when removing driver
I probably should have put the model in the original report, but it's a E371. I'll put it back in the machine and test it when I'm back home. Thanks for the work! On 08/08/17 18:35, Bjørn Mork wrote: Nathaniel Roach <nroac...@gmail.com> writes: Unsure at which point was added, but issue not present in stock debian 4.11 kernel. Running on a Thinkpad X220 with coreboot. I'm building from upstream. When I attempt to remove the qmi_wwan module (which also happens pre-suspend) the rmmod process gets killed, and the following shows in dmesg: [ 59.979791] usb 2-1.4: USB disconnect, device number 4 [ 59.980102] qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-:00:1d.0-1.4, WWAN/QMI device [ 60.006821] BUG: unable to handle kernel NULL pointer dereference at 00e0 [ 60.006879] IP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.006911] PGD 0 [ 60.006911] P4D 0 [ 60.006957] Oops: [#1] SMP [ 60.006978] Modules linked in: fuse(E) ccm(E) rfcomm(E) cmac(E) bnep(E) qmi_wwan(E) cdc_wdm(E) cdc_ether(E) usbnet(E) mii(E) btusb(E) btrtl(E) btbcm(E) btintel(E) bluetooth(E) joydev(E) xpad(E) ecdh_generic(E) ff_memless(E) binfmt_misc(E) snd_hda_codec_hdmi(E) snd_hda_codec_conexant(E) snd_hda_codec_generic(E) arc4(E) iTCO_wdt(E) iTCO_vendor_support(E) intel_rapl(E) x86_pkg_temp_thermal(E) kvm_intel(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) crc32c_intel(E) ghash_clmulni_intel(E) aesni_intel(E) iwlmvm(E) aes_x86_64(E) crypto_simd(E) mac80211(E) cryptd(E) glue_helper(E) snd_hda_intel(E) snd_hda_codec(E) iwlwifi(E) snd_hwdep(E) psmouse(E) snd_hda_core(E) snd_pcm(E) serio_raw(E) sdhci_pci(E) pcspkr(E) snd_timer(E) ehci_pci(E) e1000e(E) i2c_i801(E) ehci_hcd(E) snd(E) sg(E) i915(E) lpc_ich(E) [ 60.007366] ptp(E) usbcore(E) cfg80211(E) mfd_core(E) pps_core(E) shpchp(E) ac(E) battery(E) tpm_tis(E) tpm_tis_core(E) evdev(E) tpm(E) parport_pc(E) ppdev(E) lp(E) parport(E) ip_tables(E) x_tables(E) autofs4(E) [ 60.007474] CPU: 2 PID: 33 Comm: kworker/2:1 Tainted: GE 4.12.3-nr44-normandy-r1500619820+ #1 [ 60.007524] Hardware name: LENOVO 4291LR7/4291LR7, BIOS CBET4000 4.6-810-g50522254fb 07/21/2017 [ 60.007580] Workqueue: usb_hub_wq hub_event [usbcore] [ 60.007609] task: 8c882b716040 task.stack: b8e800d84000 [ 60.007644] RIP: 0010:qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.007678] RSP: 0018:b8e800d87b38 EFLAGS: 00010246 [ 60.007711] RAX: RBX: RCX: [ 60.007752] RDX: 0001 RSI: 8c8824f3f1d0 RDI: 8c8824ef6400 [ 60.007792] RBP: 8c8824ef6400 R08: R09: [ 60.007833] R10: b8e800d87780 R11: 0011 R12: c07ea0e8 [ 60.007874] R13: 8c8824e2e000 R14: 8c8824e2e098 R15: [ 60.007915] FS: () GS:8c883530() knlGS: [ 60.007960] CS: 0010 DS: ES: CR0: 80050033 [ 60.007994] CR2: 00e0 CR3: 000229ca5000 CR4: 000406e0 [ 60.008035] Call Trace: [ 60.008065] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008101] ? device_release_driver_internal+0x154/0x210 [ 60.008135] ? qmi_wwan_unbind+0x6d/0xc0 [qmi_wwan] [ 60.008168] ? usbnet_disconnect+0x6c/0xf0 [usbnet] [ 60.008194] ? qmi_wwan_disconnect+0x87/0xc0 [qmi_wwan] [ 60.008232] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008264] ? device_release_driver_internal+0x154/0x210 [ 60.008296] ? bus_remove_device+0xf5/0x160 [ 60.008324] ? device_del+0x1dc/0x310 [ 60.008355] ? usb_remove_ep_devs+0x1b/0x30 [usbcore] [ 60.008393] ? usb_disable_device+0x93/0x250 [usbcore] [ 60.008430] ? usb_disconnect+0x90/0x260 [usbcore] [ 60.008468] ? hub_event+0x1d9/0x14a0 [usbcore] [ 60.008500] ? process_one_work+0x175/0x370 [ 60.008528] ? worker_thread+0x4a/0x380 [ 60.008555] ? kthread+0xfc/0x130 [ 60.008579] ? process_one_work+0x370/0x370 [ 60.008606] ? kthread_park+0x60/0x60 [ 60.008631] ? ret_from_fork+0x22/0x30 [ 60.008656] Code: 66 0f 1f 44 00 00 66 66 66 66 90 55 48 89 fd 53 48 83 ec 10 48 8b 9f c8 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 83 e0 00 00 00 02 74 51 e8 0d b3 2b cd 85 c0 74 67 48 8b bb [ 60.011925] RIP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] RSP: b8e800d87b38 [ 60.013564] CR2: 00e0 [ 60.022125] ---[ end trace e536b59f45bc0f25 ]--- [ 60.025385] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready If I attempt a second rmmod, the process hangs. If I attempt it on 4.11.x it works as expected: [ 16.897783] fuse init (API version 7.26) [ 68.073552] usbcore: deregistering interface driver qmi_wwan [ 68.075808] qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-:00:1d.0-1.4, WWAN/QMI device [ 72.431403] e1000e: enp0s25 NIC Link is Down So I'm pretty certain it's not coreboot causing the issue.
Re: qmi_wwan: Null pointer dereference when removing driver
At some point in the suspend procedure the error occurs, so the first suspend works but subsequent ones fail with something like "timeout waiting for processes to suspend". I just assumed it happened before the suspend happens but was too late to be a hindrance. Presumably the driver dies during the re-probe stage you mentioned, but a rmmod was how I found the issue (I was trying to pull out the driver to see if it was causing the suspend issues). On 27/07/17 23:39, Dan Williams wrote: On Thu, 2017-07-27 at 13:31 +0800, Nathaniel Roach wrote: Unsure at which point was added, but issue not present in stock debian 4.11 kernel. Running on a Thinkpad X220 with coreboot. I'm building from upstream. When I attempt to remove the qmi_wwan module (which also happens pre-suspend) the rmmod process gets killed, and the following shows in dmesg: Unrelated to the crash (which should be fixed), why do you need to remove the module pre-suspend? Typically on a laptop the device will either have all power cut to it over suspend and thus it'll get reprobed on resume, or else suspend gets handled OK by the driver. I'm curious what the problem was that required an rmmod over suspend. Dan [ 59.979791] usb 2-1.4: USB disconnect, device number 4 [ 59.980102] qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-:00:1d.0-1.4, WWAN/QMI device [ 60.006821] BUG: unable to handle kernel NULL pointer dereference at 00e0 [ 60.006879] IP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.006911] PGD 0 [ 60.006911] P4D 0 [ 60.006957] Oops: [#1] SMP [ 60.006978] Modules linked in: fuse(E) ccm(E) rfcomm(E) cmac(E) bnep(E) qmi_wwan(E) cdc_wdm(E) cdc_ether(E) usbnet(E) mii(E) btusb(E) btrtl(E) btbcm(E) btintel(E) bluetooth(E) joydev(E) xpad(E) ecdh_generic(E) ff_memless(E) binfmt_misc(E) snd_hda_codec_hdmi(E) snd_hda_codec_conexant(E) snd_hda_codec_generic(E) arc4(E) iTCO_wdt(E) iTCO_vendor_support(E) intel_rapl(E) x86_pkg_temp_thermal(E) kvm_intel(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) crc32c_intel(E) ghash_clmulni_intel(E) aesni_intel(E) iwlmvm(E) aes_x86_64(E) crypto_simd(E) mac80211(E) cryptd(E) glue_helper(E) snd_hda_intel(E) snd_hda_codec(E) iwlwifi(E) snd_hwdep(E) psmouse(E) snd_hda_core(E) snd_pcm(E) serio_raw(E) sdhci_pci(E) pcspkr(E) snd_timer(E) ehci_pci(E) e1000e(E) i2c_i801(E) ehci_hcd(E) snd(E) sg(E) i915(E) lpc_ich(E) [ 60.007366] ptp(E) usbcore(E) cfg80211(E) mfd_core(E) pps_core(E) shpchp(E) ac(E) battery(E) tpm_tis(E) tpm_tis_core(E) evdev(E) tpm(E) parport_pc(E) ppdev(E) lp(E) parport(E) ip_tables(E) x_tables(E) autofs4(E) [ 60.007474] CPU: 2 PID: 33 Comm: kworker/2:1 Tainted: GE 4.12.3-nr44-normandy-r1500619820+ #1 [ 60.007524] Hardware name: LENOVO 4291LR7/4291LR7, BIOS CBET4000 4.6-810-g50522254fb 07/21/2017 [ 60.007580] Workqueue: usb_hub_wq hub_event [usbcore] [ 60.007609] task: 8c882b716040 task.stack: b8e800d84000 [ 60.007644] RIP: 0010:qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.007678] RSP: 0018:b8e800d87b38 EFLAGS: 00010246 [ 60.007711] RAX: RBX: RCX: [ 60.007752] RDX: 0001 RSI: 8c8824f3f1d0 RDI: 8c8824ef6400 [ 60.007792] RBP: 8c8824ef6400 R08: R09: [ 60.007833] R10: b8e800d87780 R11: 0011 R12: c07ea0e8 [ 60.007874] R13: 8c8824e2e000 R14: 8c8824e2e098 R15: [ 60.007915] FS: () GS:8c883530() knlGS: [ 60.007960] CS: 0010 DS: ES: CR0: 80050033 [ 60.007994] CR2: 00e0 CR3: 000229ca5000 CR4: 000406e0 [ 60.008035] Call Trace: [ 60.008065] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008101] ? device_release_driver_internal+0x154/0x210 [ 60.008135] ? qmi_wwan_unbind+0x6d/0xc0 [qmi_wwan] [ 60.008168] ? usbnet_disconnect+0x6c/0xf0 [usbnet] [ 60.008194] ? qmi_wwan_disconnect+0x87/0xc0 [qmi_wwan] [ 60.008232] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008264] ? device_release_driver_internal+0x154/0x210 [ 60.008296] ? bus_remove_device+0xf5/0x160 [ 60.008324] ? device_del+0x1dc/0x310 [ 60.008355] ? usb_remove_ep_devs+0x1b/0x30 [usbcore] [ 60.008393] ? usb_disable_device+0x93/0x250 [usbcore] [ 60.008430] ? usb_disconnect+0x90/0x260 [usbcore] [ 60.008468] ? hub_event+0x1d9/0x14a0 [usbcore] [ 60.008500] ? process_one_work+0x175/0x370 [ 60.008528] ? worker_thread+0x4a/0x380 [ 60.008555] ? kthread+0xfc/0x130 [ 60.008579] ? process_one_work+0x370/0x370 [ 60.008606] ? kthread_park+0x60/0x60 [ 60.008631] ? ret_from_fork+0x22/0x30 [ 60.008656] Code: 66 0f 1f 44 00 00 66 66 66 66 90 55 48 89 fd 53 48 83 ec 10 48 8b 9f c8 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 83 e0 00 00 00 02 74 51 e8 0d b3 2b cd 85 c0 74 67 48 8b bb [ 60.011925] RIP: qmi_wwan_disco
qmi_wwan: Null pointer dereference when removing driver
Unsure at which point was added, but issue not present in stock debian 4.11 kernel. Running on a Thinkpad X220 with coreboot. I'm building from upstream. When I attempt to remove the qmi_wwan module (which also happens pre-suspend) the rmmod process gets killed, and the following shows in dmesg: [ 59.979791] usb 2-1.4: USB disconnect, device number 4 [ 59.980102] qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-:00:1d.0-1.4, WWAN/QMI device [ 60.006821] BUG: unable to handle kernel NULL pointer dereference at 00e0 [ 60.006879] IP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.006911] PGD 0 [ 60.006911] P4D 0 [ 60.006957] Oops: [#1] SMP [ 60.006978] Modules linked in: fuse(E) ccm(E) rfcomm(E) cmac(E) bnep(E) qmi_wwan(E) cdc_wdm(E) cdc_ether(E) usbnet(E) mii(E) btusb(E) btrtl(E) btbcm(E) btintel(E) bluetooth(E) joydev(E) xpad(E) ecdh_generic(E) ff_memless(E) binfmt_misc(E) snd_hda_codec_hdmi(E) snd_hda_codec_conexant(E) snd_hda_codec_generic(E) arc4(E) iTCO_wdt(E) iTCO_vendor_support(E) intel_rapl(E) x86_pkg_temp_thermal(E) kvm_intel(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) crc32c_intel(E) ghash_clmulni_intel(E) aesni_intel(E) iwlmvm(E) aes_x86_64(E) crypto_simd(E) mac80211(E) cryptd(E) glue_helper(E) snd_hda_intel(E) snd_hda_codec(E) iwlwifi(E) snd_hwdep(E) psmouse(E) snd_hda_core(E) snd_pcm(E) serio_raw(E) sdhci_pci(E) pcspkr(E) snd_timer(E) ehci_pci(E) e1000e(E) i2c_i801(E) ehci_hcd(E) snd(E) sg(E) i915(E) lpc_ich(E) [ 60.007366] ptp(E) usbcore(E) cfg80211(E) mfd_core(E) pps_core(E) shpchp(E) ac(E) battery(E) tpm_tis(E) tpm_tis_core(E) evdev(E) tpm(E) parport_pc(E) ppdev(E) lp(E) parport(E) ip_tables(E) x_tables(E) autofs4(E) [ 60.007474] CPU: 2 PID: 33 Comm: kworker/2:1 Tainted: GE 4.12.3-nr44-normandy-r1500619820+ #1 [ 60.007524] Hardware name: LENOVO 4291LR7/4291LR7, BIOS CBET4000 4.6-810-g50522254fb 07/21/2017 [ 60.007580] Workqueue: usb_hub_wq hub_event [usbcore] [ 60.007609] task: 8c882b716040 task.stack: b8e800d84000 [ 60.007644] RIP: 0010:qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] [ 60.007678] RSP: 0018:b8e800d87b38 EFLAGS: 00010246 [ 60.007711] RAX: RBX: RCX: [ 60.007752] RDX: 0001 RSI: 8c8824f3f1d0 RDI: 8c8824ef6400 [ 60.007792] RBP: 8c8824ef6400 R08: R09: [ 60.007833] R10: b8e800d87780 R11: 0011 R12: c07ea0e8 [ 60.007874] R13: 8c8824e2e000 R14: 8c8824e2e098 R15: [ 60.007915] FS: () GS:8c883530() knlGS: [ 60.007960] CS: 0010 DS: ES: CR0: 80050033 [ 60.007994] CR2: 00e0 CR3: 000229ca5000 CR4: 000406e0 [ 60.008035] Call Trace: [ 60.008065] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008101] ? device_release_driver_internal+0x154/0x210 [ 60.008135] ? qmi_wwan_unbind+0x6d/0xc0 [qmi_wwan] [ 60.008168] ? usbnet_disconnect+0x6c/0xf0 [usbnet] [ 60.008194] ? qmi_wwan_disconnect+0x87/0xc0 [qmi_wwan] [ 60.008232] ? usb_unbind_interface+0x71/0x270 [usbcore] [ 60.008264] ? device_release_driver_internal+0x154/0x210 [ 60.008296] ? bus_remove_device+0xf5/0x160 [ 60.008324] ? device_del+0x1dc/0x310 [ 60.008355] ? usb_remove_ep_devs+0x1b/0x30 [usbcore] [ 60.008393] ? usb_disable_device+0x93/0x250 [usbcore] [ 60.008430] ? usb_disconnect+0x90/0x260 [usbcore] [ 60.008468] ? hub_event+0x1d9/0x14a0 [usbcore] [ 60.008500] ? process_one_work+0x175/0x370 [ 60.008528] ? worker_thread+0x4a/0x380 [ 60.008555] ? kthread+0xfc/0x130 [ 60.008579] ? process_one_work+0x370/0x370 [ 60.008606] ? kthread_park+0x60/0x60 [ 60.008631] ? ret_from_fork+0x22/0x30 [ 60.008656] Code: 66 0f 1f 44 00 00 66 66 66 66 90 55 48 89 fd 53 48 83 ec 10 48 8b 9f c8 00 00 00 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 83 e0 00 00 00 02 74 51 e8 0d b3 2b cd 85 c0 74 67 48 8b bb [ 60.011925] RIP: qmi_wwan_disconnect+0x25/0xc0 [qmi_wwan] RSP: b8e800d87b38 [ 60.013564] CR2: 00e0 [ 60.022125] ---[ end trace e536b59f45bc0f25 ]--- [ 60.025385] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready If I attempt a second rmmod, the process hangs. If I attempt it on 4.11.x it works as expected: [ 16.897783] fuse init (API version 7.26) [ 68.073552] usbcore: deregistering interface driver qmi_wwan [ 68.075808] qmi_wwan 2-1.4:1.6 wwp0s29u1u4i6: unregister 'qmi_wwan' usb-:00:1d.0-1.4, WWAN/QMI device [ 72.431403] e1000e: enp0s25 NIC Link is Down So I'm pretty certain it's not coreboot causing the issue.
