Description of problem: I was playing XCOM through Steam. System completely froze. I guess this could be related to: https://bugs.freedesktop.org/show_bug.cgi?id=80419 Additional info: reporter: libreport-2.6.2 WARNING: CPU: 0 PID: 856 at drivers/gpu/drm/radeon/radeon_object.c:83 radeon_ttm_bo_destroy+0xe0/0xf0 [radeon]() Modules linked in: bnep bluetooth rfkill ebtable_filter ebtables ip6table_filter ip6_tables fuse it87 hwmon_vid intel_rapl iosf_mbi x86_pkg_temp_thermal coretemp kvm_intel kvm vfat fat snd_hda_codec_realtek snd_hda_codec_generic crct10dif_pclmul snd_hda_codec_hdmi crc32_pclmul crc32c_intel iTCO_wdt iTCO_vendor_support ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm joydev snd_timer lpc_ich i2c_i801 mei_me snd mei soundcore tpm_infineon shpchp video tpm_tis tpm soc_button_array nfsd auth_rpcgss nfs_acl lockd grace sunrpc hid_logitech_hidpp hid_logitech_dj amdkfd amd_iommu_v2 radeon i2c_algo_bit drm_kms_helper ttm e1000e drm serio_raw ptp pps_core CPU: 0 PID: 856 Comm: gnome-shell Not tainted 4.2.1-300.fc23.x86_64 #1 Hardware name: Gigabyte Technology Co., Ltd. Z87-D3HP/Z87-D3HP-CF, BIOS F5 08/14/2013 0000000000000000 00000000ebdab3f7 ffff8802331b7b48 ffffffff8177170a 0000000000000000 0000000000000000 ffff8802331b7b88 ffffffff8109e466 0000000000000002 ffff880230e31068 ffff880230e31000 ffffffffffffffff Call Trace: [<ffffffff8177170a>] dump_stack+0x45/0x57 [<ffffffff8109e466>] warn_slowpath_common+0x86/0xc0 [<ffffffff8109e59a>] warn_slowpath_null+0x1a/0x20 [<ffffffffa013dcf0>] radeon_ttm_bo_destroy+0xe0/0xf0 [radeon] [<ffffffffa00d40a6>] ttm_bo_release_list+0xa6/0x150 [ttm] [<ffffffffa00d449d>] ttm_bo_release+0x19d/0x230 [ttm] [<ffffffffa00d4554>] ttm_bo_unref+0x24/0x30 [ttm] [<ffffffffa013e1e9>] radeon_bo_unref+0x39/0x70 [radeon] [<ffffffffa0151337>] radeon_gem_object_free+0x57/0x70 [radeon] [<ffffffffa0020047>] drm_gem_object_free+0x27/0x30 [drm] [<ffffffffa002042e>] drm_gem_object_handle_unreference_unlocked+0xfe/0x110 [drm] [<ffffffffa00204e5>] drm_gem_handle_delete+0xa5/0xf0 [drm] [<ffffffffa0020b30>] drm_gem_close_ioctl+0x20/0x30 [drm] [<ffffffffa0021365>] drm_ioctl+0x125/0x610 [drm] [<ffffffffa0020b10>] ? drm_gem_handle_create+0x50/0x50 [drm] [<ffffffff8125e0a6>] ? fsnotify+0x316/0x4a0 [<ffffffffa011f04c>] radeon_drm_ioctl+0x4c/0x80 [radeon] [<ffffffff812312c5>] do_vfs_ioctl+0x295/0x470 [<ffffffff81140f0b>] ? __audit_syscall_entry+0xab/0xf0 [<ffffffff8102234b>] ? do_audit_syscall_entry+0x4b/0x70 [<ffffffff81231519>] SyS_ioctl+0x79/0x90 [<ffffffff81023885>] ? syscall_trace_leave+0xb5/0x110 [<ffffffff817780ee>] entry_SYSCALL_64_fastpath+0x12/0x71 Potential duplicate: bug 1229083
Created attachment 1078704 [details] File: dmesg
This is definitely https://bugs.freedesktop.org/show_bug.cgi?id=80419 .
let's track it in upstream.