Additional info: reporter: libreport-2.9.4 WARNING: CPU: 3 PID: 679 at lib/debugobjects.c:329 debug_print_object+0x6a/0x80 Modules linked in: kvm_intel(+) iTCO_wdt iTCO_vendor_support kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate intel_uncore dell_rbtn intel_rapl_perf iwlmvm(+) mei_wdt hid_multitouch mac80211 dell_laptop(+) dell_smm_hwmon snd_hda_intel uvcvideo snd_hda_codec iwlwifi videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 btusb dell_wmi btrtl videobuf2_common dell_smbios snd_hda_core btbcm dcdbas btintel snd_hwdep videodev snd_seq bluetooth cfg80211 snd_seq_device media joydev snd_pcm dell_wmi_descriptor intel_wmi_thunderbolt wmi_bmof rtsx_pci_ms ecdh_generic memstick snd_timer rfkill snd i2c_i801 mei_me idma64 mei soundcore processor_thermal_device ie31200_edac shpchp intel_lpss_pci intel_soc_dts_iosf intel_pch_thermal intel_lpss intel_hid sparse_keymap int3403_thermal int3402_thermal int340x_thermal_zone int3400_thermal acpi_thermal_rel acpi_pad binfmt_misc nouveau i915 rtsx_pci_sdmmc mmc_core ttm mxm_wmi i2c_algo_bit drm_kms_helper nvme drm crc32c_intel nvme_core serio_raw rtsx_pci i2c_hid wmi video tcp_bbr CPU: 3 PID: 679 Comm: systemd-backlig Not tainted 4.17.0-0.rc1.git0.1.fc29.x86_64 #1 Hardware name: Dell Inc. Precision 5510/08R8KJ, BIOS 1.6.1 12/11/2017 RIP: 0010:debug_print_object+0x6a/0x80 RSP: 0018:ffffbe56c280fcd0 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffffbe56c280fd00 RCX: 0000000000000006 RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffff9c842cdd6c40 RBP: ffffffff8965d540 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff89309266 R13: ffffffff8965d540 R14: ffffffff8b08ad28 R15: 0000000000000006 FS: 00007f22d11f1940(0000) GS:ffff9c842cc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005562c4dd2588 CR3: 00000004a135c002 CR4: 00000000003606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_activate+0x16e/0x240 ? kernfs_fop_write+0xcc/0x1b0 __queue_work+0x4f/0x5e0 queue_work_on+0x87/0x90 brightness_store+0x6f/0xc0 kernfs_fop_write+0x101/0x1b0 __vfs_write+0x36/0x180 ? rcu_read_lock_sched_held+0x6b/0x80 ? rcu_sync_lockdep_assert+0x2e/0x60 ? __sb_start_write+0x14c/0x1b0 ? vfs_write+0x15d/0x1c0 vfs_write+0xba/0x1c0 ksys_write+0x52/0xc0 do_syscall_64+0x60/0x1f0 ? entry_SYSCALL_64_after_hwframe+0x49/0xbe Code: c1 8b 43 10 83 c2 01 8b 4b 14 4c 89 e6 89 15 f6 da b6 02 4c 8b 45 00 48 c7 c7 30 0a 34 89 48 8b 14 c5 80 bc 08 89 e8 8a 16 ba ff <0f> 0b 5b 83 05 f8 6c 46 01 01 5d 41 5c c3 83 05 ed 6c 46 01 01 irq event stamp: 21268 hardirqs last enabled at (21267): [<ffffffff881592d0>] current_kernel_time64+0xa0/0xd0 hardirqs last disabled at (21268): [<ffffffff880daccc>] queue_work_on+0x2c/0x90 softirqs last enabled at (21228): [<ffffffff88e0038c>] __do_softirq+0x38c/0x4f7 softirqs last disabled at (20575): [<ffffffff880c1261>] irq_exit+0x101/0x110
Created attachment 1423691 [details] File: dmesg
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 28 kernel bugs. Fedora 28 has now been rebased to 4.17.7-200.fc28. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 5 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.