Description of problem: I don't have a simple repeat for this. It triggered under KDE (desktop effects disabled) after being used for most of the day; the last thing I did before it went was sliding between two virtual desktops (which I'd been doing all day). Setup: F20 host qemu-kvm-1.6.1-2.fc20.x86_64 F20 guest xorg-x11-drv-qxl-0.1.1-3.fc20.x86_64 3.11.10-300.fc20.x86_64 kernel The X server crashed at the same time with: [ 32178.326] (EE) qxl(0): error doing QXL_ALLOC [ 32178.326] (EE) [ 32178.326] (EE) Backtrace: [ 32178.328] (EE) 0: ? (?+0xc474b5d0) [0x7fffc4bbed40] [ 32178.329] (EE) 1: ? (?+0xc474b5d0) [0xff192d25ad1f] [ 32178.329] (EE) 2: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x3d76) [ 0x7f19636369e6] [ 32178.329] (EE) 3: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x4536) [ 0x7f1963637976] [ 32178.330] (EE) 4: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x11c5d) [0x7f19636522ad] [ 32178.330] (EE) 5: /usr/lib64/xorg/modules/drivers/qxl_drv.so (_init+0x17c91) [0x7f196365d741] [ 32178.330] (EE) 6: /usr/bin/X (?+0x17c91) [0x5439b1] [ 32178.330] (EE) 7: /usr/bin/X (?+0x17c91) [0x53cf21] [ 32178.330] (EE) 8: /usr/bin/X (?+0x17c91) [0x451c41] [ 32178.330] (EE) 9: /usr/bin/X (?+0x17c91) [0x4401a1] [ 32178.331] (EE) 10: /lib64/libc.so.6 (?+0x17c91) [0x7f1967758901] [ 32178.331] (EE) 11: /usr/bin/X (?+0x17c91) [0x4408ad] [ 32178.332] (EE) 12: ? (?+0x17c91) [0x17c91] [ 32178.332] (EE) [ 32178.332] (EE) Segmentation fault at address 0x0 [ 32178.332] (EE) Fatal server error: [ 32178.332] (EE) Caught signal 11 (Segmentation fault). Server aborting Additional info: reporter: libreport-2.1.9 WARNING: CPU: 2 PID: 1481 at drivers/gpu/drm/qxl/qxl_ttm.c:418 qxl_sync_obj_wait+0x172/0x1f0 [qxl]() sync obj 301 still has outstanding releases 0 0 0 262144 1 Modules linked in: tun uinput nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE bnep bluetooth ip6t_REJECT cfg80211 rfkill xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw joydev snd_hda_intel ppdev snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm i2c_piix4 snd_page_alloc snd_timer parport_pc parport serio_raw snd virtio_balloon microcode virtio_console mperf soundcore nfsd auth_rpcgss nfs_acl lockd sunrpc dm_crypt virtio_blk virtio_net qxl drm_kms_helper ttm drm virtio_pci virtio_ring virtio i2c_core ata_generic pata_acpi CPU: 2 PID: 1481 Comm: X Not tainted 3.11.10-300.fc20.x86_64 #1 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 0000000000000009 ffff8801877e58b8 ffffffff816441bb ffff8801877e5900 ffff8801877e58f0 ffffffff8106715d 0000000000000001 ffff8801944ebeb0 0000000000000001 ffff8801944ebec8 0000000000000000 ffff8801877e5950 Call Trace: [<ffffffff816441bb>] dump_stack+0x45/0x56 [<ffffffff8106715d>] warn_slowpath_common+0x7d/0xa0 [<ffffffff810671cc>] warn_slowpath_fmt+0x4c/0x50 [<ffffffff816482f3>] ? schedule_hrtimeout_range+0x13/0x20 [<ffffffffa00bde82>] qxl_sync_obj_wait+0x172/0x1f0 [qxl] [<ffffffffa00a770e>] ttm_bo_wait+0x8e/0x180 [ttm] [<ffffffffa00a8fda>] ttm_bo_evict+0x4a/0x330 [ttm] [<ffffffffa00a93f0>] ttm_mem_evict_first+0x130/0x190 [ttm] [<ffffffffa00a9701>] ttm_bo_mem_space+0x2b1/0x360 [ttm] [<ffffffffa00a9b0a>] ttm_bo_move_buffer+0xaa/0x130 [ttm] [<ffffffffa00a9c1a>] ttm_bo_validate+0x8a/0x100 [ttm] [<ffffffffa00a9e66>] ttm_bo_init+0x1d6/0x430 [ttm] [<ffffffffa00bfdf9>] qxl_bo_create+0x159/0x1e0 [qxl] [<ffffffffa00bfb60>] ? qxl_fbdev_qobj_is_fb+0x30/0x30 [qxl] [<ffffffffa00c0537>] qxl_gem_object_create+0x57/0xf0 [qxl] [<ffffffffa00c061d>] qxl_gem_object_create_with_handle+0x4d/0xf0 [qxl] [<ffffffffa00c381a>] qxl_alloc_ioctl+0x3a/0xa0 [qxl] [<ffffffffa0035122>] drm_ioctl+0x512/0x640 [drm] [<ffffffff8152fc21>] ? sock_aio_read+0x21/0x30 [<ffffffff811a8780>] ? do_sync_read+0x80/0xb0 [<ffffffff811bac3d>] do_vfs_ioctl+0x2dd/0x4b0 [<ffffffff811bae91>] SyS_ioctl+0x81/0xa0 [<ffffffff8164bc09>] ? do_device_not_available+0x19/0x20 [<ffffffff81653399>] system_call_fastpath+0x16/0x1b
Created attachment 832827 [details] File: dmesg
*** Bug 1044214 has been marked as a duplicate of this bug. ***
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*** This bug has been marked as a duplicate of bug 1058056 ***