Today I had the same situation while switching users: Dec 2 17:23:52 PC-L kernel: [85560.920615] Xorg D ffff8800c6161b30 0 4960 4956 0x00400000 Dec 2 17:23:52 PC-L kernel: [85560.920626] ffff8800028f9c28 0000000000000086 ffff8800028f9bb8 0000000000015980 Dec 2 17:23:52 PC-L kernel: [85560.920637] ffff8800028f9fd8 0000000000015980 ffff8800028f9fd8 ffff880096e92dc0 Dec 2 17:23:52 PC-L kernel: [85560.920646] 0000000000015980 0000000000015980 ffff8800028f9fd8 0000000000015980 Dec 2 17:23:52 PC-L kernel: [85560.920655] Call Trace: Dec 2 17:23:52 PC-L kernel: [85560.920669] [<ffffffff8148f3c7>] ? skb_dequeue+0x67/0x90 Dec 2 17:23:52 PC-L kernel: [85560.920680] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:23:52 PC-L kernel: [85560.920689] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:23:52 PC-L kernel: [85560.920747] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:23:52 PC-L kernel: [85560.920758] [<ffffffff814888de>] ? sock_aio_read+0x17e/0x190 Dec 2 17:23:52 PC-L kernel: [85560.920805] [<ffffffffa022fb90>] ? radeon_gem_create_ioctl+0xb0/0xe0 [radeon] Dec 2 17:23:52 PC-L kernel: [85560.920838] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:23:52 PC-L kernel: [85560.920884] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:23:52 PC-L kernel: [85560.920896] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:23:52 PC-L kernel: [85560.920904] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:23:52 PC-L kernel: [85560.920914] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:23:52 PC-L kernel: [85560.920922] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:23:52 PC-L kernel: [85560.920931] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:23:52 PC-L kernel: [85560.920939] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:23:52 PC-L kernel: [85560.920948] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:23:52 PC-L kernel: [85560.920956] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:23:52 PC-L kernel: [85560.920966] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:23:52 PC-L kernel: [85560.920997] Xorg D 000000010081d309 0 6337 6332 0x00400000 Dec 2 17:23:52 PC-L kernel: [85560.921007] ffff880078085c28 0000000000000086 0000000000000080 0000000000015980 Dec 2 17:23:52 PC-L kernel: [85560.921017] ffff880078085fd8 0000000000015980 ffff880078085fd8 ffff8800362d5b80 Dec 2 17:23:52 PC-L kernel: [85560.921026] 0000000000015980 0000000000015980 ffff880078085fd8 0000000000015980 Dec 2 17:23:52 PC-L kernel: [85560.921035] Call Trace: Dec 2 17:23:52 PC-L kernel: [85560.921043] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:23:52 PC-L kernel: [85560.921052] [<ffffffff8148720e>] ? sock_aio_write+0x14e/0x160 Dec 2 17:23:52 PC-L kernel: [85560.921060] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:23:52 PC-L kernel: [85560.921106] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:23:52 PC-L kernel: [85560.921115] [<ffffffff814870c0>] ? sock_aio_write+0x0/0x160 Dec 2 17:23:52 PC-L kernel: [85560.921124] [<ffffffff81152903>] ? do_sync_readv_writev+0xd3/0x110 Dec 2 17:23:52 PC-L kernel: [85560.921150] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:23:52 PC-L kernel: [85560.921196] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:23:52 PC-L kernel: [85560.921206] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:23:52 PC-L kernel: [85560.921214] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:23:52 PC-L kernel: [85560.921223] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:23:52 PC-L kernel: [85560.921231] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:23:52 PC-L kernel: [85560.921239] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:23:52 PC-L kernel: [85560.921246] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:23:52 PC-L kernel: [85560.921255] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:23:52 PC-L kernel: [85560.921263] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:23:52 PC-L kernel: [85560.921272] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:25:52 PC-L kernel: [85680.920119] Xorg D ffff8800c6161b30 0 4960 4956 0x00400000 Dec 2 17:25:52 PC-L kernel: [85680.920131] ffff8800028f9c28 0000000000000086 ffff8800028f9bb8 0000000000015980 Dec 2 17:25:52 PC-L kernel: [85680.920142] ffff8800028f9fd8 0000000000015980 ffff8800028f9fd8 ffff880096e92dc0 Dec 2 17:25:52 PC-L kernel: [85680.920151] 0000000000015980 0000000000015980 ffff8800028f9fd8 0000000000015980 Dec 2 17:25:52 PC-L kernel: [85680.920160] Call Trace: Dec 2 17:25:52 PC-L kernel: [85680.920174] [<ffffffff8148f3c7>] ? skb_dequeue+0x67/0x90 Dec 2 17:25:52 PC-L kernel: [85680.920185] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:25:52 PC-L kernel: [85680.920194] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:25:52 PC-L kernel: [85680.920252] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:25:52 PC-L kernel: [85680.920263] [<ffffffff814888de>] ? sock_aio_read+0x17e/0x190 Dec 2 17:25:52 PC-L kernel: [85680.920310] [<ffffffffa022fb90>] ? radeon_gem_create_ioctl+0xb0/0xe0 [radeon] Dec 2 17:25:52 PC-L kernel: [85680.920342] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:25:52 PC-L kernel: [85680.920389] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:25:52 PC-L kernel: [85680.920400] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:25:52 PC-L kernel: [85680.920409] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:25:52 PC-L kernel: [85680.920419] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:25:52 PC-L kernel: [85680.920427] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:25:52 PC-L kernel: [85680.920436] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:25:52 PC-L kernel: [85680.920443] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:25:52 PC-L kernel: [85680.920453] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:25:52 PC-L kernel: [85680.920461] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:25:52 PC-L kernel: [85680.920471] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:25:52 PC-L kernel: [85680.920506] Xorg D 000000010081d309 0 6337 6332 0x00400000 Dec 2 17:25:52 PC-L kernel: [85680.920516] ffff880078085c28 0000000000000086 0000000000000080 0000000000015980 Dec 2 17:25:52 PC-L kernel: [85680.920525] ffff880078085fd8 0000000000015980 ffff880078085fd8 ffff8800362d5b80 Dec 2 17:25:52 PC-L kernel: [85680.920535] 0000000000015980 0000000000015980 ffff880078085fd8 0000000000015980 Dec 2 17:25:52 PC-L kernel: [85680.920544] Call Trace: Dec 2 17:25:52 PC-L kernel: [85680.920552] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:25:52 PC-L kernel: [85680.920561] [<ffffffff8148720e>] ? sock_aio_write+0x14e/0x160 Dec 2 17:25:52 PC-L kernel: [85680.920569] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:25:52 PC-L kernel: [85680.920614] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:25:52 PC-L kernel: [85680.920624] [<ffffffff814870c0>] ? sock_aio_write+0x0/0x160 Dec 2 17:25:52 PC-L kernel: [85680.920632] [<ffffffff81152903>] ? do_sync_readv_writev+0xd3/0x110 Dec 2 17:25:52 PC-L kernel: [85680.920660] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:25:52 PC-L kernel: [85680.920705] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:25:52 PC-L kernel: [85680.920715] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:25:52 PC-L kernel: [85680.920723] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:25:52 PC-L kernel: [85680.920732] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:25:52 PC-L kernel: [85680.920740] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:25:52 PC-L kernel: [85680.920749] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:25:52 PC-L kernel: [85680.920756] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:25:52 PC-L kernel: [85680.920765] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:25:52 PC-L kernel: [85680.920773] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:25:52 PC-L kernel: [85680.920782] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:27:51 PC-L kernel: [85800.920823] Xorg D ffff8800c6161b30 0 4960 4956 0x00400000 Dec 2 17:27:51 PC-L kernel: [85800.920835] ffff8800028f9c28 0000000000000086 ffff8800028f9bb8 0000000000015980 Dec 2 17:27:51 PC-L kernel: [85800.920845] ffff8800028f9fd8 0000000000015980 ffff8800028f9fd8 ffff880096e92dc0 Dec 2 17:27:51 PC-L kernel: [85800.920855] 0000000000015980 0000000000015980 ffff8800028f9fd8 0000000000015980 Dec 2 17:27:51 PC-L kernel: [85800.920863] Call Trace: Dec 2 17:27:51 PC-L kernel: [85800.920878] [<ffffffff8148f3c7>] ? skb_dequeue+0x67/0x90 Dec 2 17:27:51 PC-L kernel: [85800.920889] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:27:51 PC-L kernel: [85800.920898] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:27:51 PC-L kernel: [85800.920955] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:27:51 PC-L kernel: [85800.920966] [<ffffffff814888de>] ? sock_aio_read+0x17e/0x190 Dec 2 17:27:51 PC-L kernel: [85800.921013] [<ffffffffa022fb90>] ? radeon_gem_create_ioctl+0xb0/0xe0 [radeon] Dec 2 17:27:51 PC-L kernel: [85800.921045] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:27:51 PC-L kernel: [85800.921092] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:27:51 PC-L kernel: [85800.921104] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:27:51 PC-L kernel: [85800.921112] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:27:51 PC-L kernel: [85800.921121] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:27:51 PC-L kernel: [85800.921136] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:27:51 PC-L kernel: [85800.921145] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:27:51 PC-L kernel: [85800.921153] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:27:51 PC-L kernel: [85800.921163] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:27:51 PC-L kernel: [85800.921170] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:27:51 PC-L kernel: [85800.921180] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:27:51 PC-L kernel: [85800.921212] Xorg D 000000010081d309 0 6337 6332 0x00400000 Dec 2 17:27:51 PC-L kernel: [85800.921223] ffff880078085c28 0000000000000086 0000000000000080 0000000000015980 Dec 2 17:27:51 PC-L kernel: [85800.921233] ffff880078085fd8 0000000000015980 ffff880078085fd8 ffff8800362d5b80 Dec 2 17:27:51 PC-L kernel: [85800.921242] 0000000000015980 0000000000015980 ffff880078085fd8 0000000000015980 Dec 2 17:27:51 PC-L kernel: [85800.921281] Call Trace: Dec 2 17:27:51 PC-L kernel: [85800.921293] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:27:51 PC-L kernel: [85800.921306] [<ffffffff8148720e>] ? sock_aio_write+0x14e/0x160 Dec 2 17:27:51 PC-L kernel: [85800.921318] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:27:51 PC-L kernel: [85800.921367] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:27:51 PC-L kernel: [85800.921379] [<ffffffff814870c0>] ? sock_aio_write+0x0/0x160 Dec 2 17:27:51 PC-L kernel: [85800.921392] [<ffffffff81152903>] ? do_sync_readv_writev+0xd3/0x110 Dec 2 17:27:51 PC-L kernel: [85800.921422] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:27:51 PC-L kernel: [85800.921471] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:27:51 PC-L kernel: [85800.921484] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:27:51 PC-L kernel: [85800.921496] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:27:51 PC-L kernel: [85800.921509] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:27:51 PC-L kernel: [85800.921521] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:27:51 PC-L kernel: [85800.921533] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:27:51 PC-L kernel: [85800.921544] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:27:51 PC-L kernel: [85800.921557] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:27:51 PC-L kernel: [85800.921568] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:27:51 PC-L kernel: [85800.921581] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:29:51 PC-L kernel: [85920.920113] Xorg D ffff8800c6161b30 0 4960 4956 0x00400000 Dec 2 17:29:51 PC-L kernel: [85920.920125] ffff8800028f9c28 0000000000000086 ffff8800028f9bb8 0000000000015980 Dec 2 17:29:51 PC-L kernel: [85920.920136] ffff8800028f9fd8 0000000000015980 ffff8800028f9fd8 ffff880096e92dc0 Dec 2 17:29:51 PC-L kernel: [85920.920145] 0000000000015980 0000000000015980 ffff8800028f9fd8 0000000000015980 Dec 2 17:29:51 PC-L kernel: [85920.920154] Call Trace: Dec 2 17:29:51 PC-L kernel: [85920.920168] [<ffffffff8148f3c7>] ? skb_dequeue+0x67/0x90 Dec 2 17:29:51 PC-L kernel: [85920.920178] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:29:51 PC-L kernel: [85920.920187] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:29:51 PC-L kernel: [85920.920244] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:29:51 PC-L kernel: [85920.920255] [<ffffffff814888de>] ? sock_aio_read+0x17e/0x190 Dec 2 17:29:51 PC-L kernel: [85920.920302] [<ffffffffa022fb90>] ? radeon_gem_create_ioctl+0xb0/0xe0 [radeon] Dec 2 17:29:51 PC-L kernel: [85920.920335] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:29:51 PC-L kernel: [85920.920381] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:29:51 PC-L kernel: [85920.920393] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:29:51 PC-L kernel: [85920.920401] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:29:51 PC-L kernel: [85920.920411] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:29:51 PC-L kernel: [85920.920419] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:29:51 PC-L kernel: [85920.920428] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:29:51 PC-L kernel: [85920.920436] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:29:51 PC-L kernel: [85920.920445] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:29:51 PC-L kernel: [85920.920453] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:29:51 PC-L kernel: [85920.920463] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:29:51 PC-L kernel: [85920.920495] Xorg D 000000010081d309 0 6337 6332 0x00400000 Dec 2 17:29:51 PC-L kernel: [85920.920505] ffff880078085c28 0000000000000086 0000000000000080 0000000000015980 Dec 2 17:29:51 PC-L kernel: [85920.920515] ffff880078085fd8 0000000000015980 ffff880078085fd8 ffff8800362d5b80 Dec 2 17:29:51 PC-L kernel: [85920.920524] 0000000000015980 0000000000015980 ffff880078085fd8 0000000000015980 Dec 2 17:29:51 PC-L kernel: [85920.920539] Call Trace: Dec 2 17:29:51 PC-L kernel: [85920.920548] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:29:51 PC-L kernel: [85920.920557] [<ffffffff8148720e>] ? sock_aio_write+0x14e/0x160 Dec 2 17:29:51 PC-L kernel: [85920.920565] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:29:51 PC-L kernel: [85920.920610] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:29:51 PC-L kernel: [85920.920619] [<ffffffff814870c0>] ? sock_aio_write+0x0/0x160 Dec 2 17:29:51 PC-L kernel: [85920.920628] [<ffffffff81152903>] ? do_sync_readv_writev+0xd3/0x110 Dec 2 17:29:51 PC-L kernel: [85920.920662] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:29:51 PC-L kernel: [85920.920707] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:29:51 PC-L kernel: [85920.920717] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:29:51 PC-L kernel: [85920.920725] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:29:51 PC-L kernel: [85920.920734] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:29:51 PC-L kernel: [85920.920742] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:29:51 PC-L kernel: [85920.920750] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:29:51 PC-L kernel: [85920.920757] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:29:51 PC-L kernel: [85920.920766] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:29:51 PC-L kernel: [85920.920774] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:29:51 PC-L kernel: [85920.920783] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:31:52 PC-L kernel: [86040.920372] Xorg D ffff8800c6161b30 0 4960 4956 0x00400000 Dec 2 17:31:52 PC-L kernel: [86040.920384] ffff8800028f9c28 0000000000000086 ffff8800028f9bb8 0000000000015980 Dec 2 17:31:52 PC-L kernel: [86040.920395] ffff8800028f9fd8 0000000000015980 ffff8800028f9fd8 ffff880096e92dc0 Dec 2 17:31:52 PC-L kernel: [86040.920404] 0000000000015980 0000000000015980 ffff8800028f9fd8 0000000000015980 Dec 2 17:31:52 PC-L kernel: [86040.920413] Call Trace: Dec 2 17:31:52 PC-L kernel: [86040.920427] [<ffffffff8148f3c7>] ? skb_dequeue+0x67/0x90 Dec 2 17:31:52 PC-L kernel: [86040.920438] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:31:52 PC-L kernel: [86040.920447] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:31:52 PC-L kernel: [86040.920504] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:31:52 PC-L kernel: [86040.920515] [<ffffffff814888de>] ? sock_aio_read+0x17e/0x190 Dec 2 17:31:52 PC-L kernel: [86040.920562] [<ffffffffa022fb90>] ? radeon_gem_create_ioctl+0xb0/0xe0 [radeon] Dec 2 17:31:52 PC-L kernel: [86040.920595] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:31:52 PC-L kernel: [86040.920641] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:31:52 PC-L kernel: [86040.920652] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:31:52 PC-L kernel: [86040.920661] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:31:52 PC-L kernel: [86040.920670] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:31:52 PC-L kernel: [86040.920678] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:31:52 PC-L kernel: [86040.920688] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:31:52 PC-L kernel: [86040.920695] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:31:52 PC-L kernel: [86040.920705] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:31:52 PC-L kernel: [86040.920712] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:31:52 PC-L kernel: [86040.920722] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b Dec 2 17:31:52 PC-L kernel: [86040.920755] Xorg D 000000010081d309 0 6337 6332 0x00400000 Dec 2 17:31:52 PC-L kernel: [86040.920765] ffff880078085c28 0000000000000086 0000000000000080 0000000000015980 Dec 2 17:31:52 PC-L kernel: [86040.920775] ffff880078085fd8 0000000000015980 ffff880078085fd8 ffff8800362d5b80 Dec 2 17:31:52 PC-L kernel: [86040.920784] 0000000000015980 0000000000015980 ffff880078085fd8 0000000000015980 Dec 2 17:31:52 PC-L kernel: [86040.920793] Call Trace: Dec 2 17:31:52 PC-L kernel: [86040.920801] [<ffffffff81588617>] __mutex_lock_slowpath+0xf7/0x180 Dec 2 17:31:52 PC-L kernel: [86040.920810] [<ffffffff8148720e>] ? sock_aio_write+0x14e/0x160 Dec 2 17:31:52 PC-L kernel: [86040.920818] [<ffffffff815884fb>] mutex_lock+0x2b/0x50 Dec 2 17:31:52 PC-L kernel: [86040.920863] [<ffffffffa0231d57>] radeon_cs_ioctl+0x47/0x1e0 [radeon] Dec 2 17:31:52 PC-L kernel: [86040.920872] [<ffffffff814870c0>] ? sock_aio_write+0x0/0x160 Dec 2 17:31:52 PC-L kernel: [86040.920881] [<ffffffff81152903>] ? do_sync_readv_writev+0xd3/0x110 Dec 2 17:31:52 PC-L kernel: [86040.920908] [<ffffffffa0170433>] drm_ioctl+0x463/0x520 [drm] Dec 2 17:31:52 PC-L kernel: [86040.920953] [<ffffffffa0231d10>] ? radeon_cs_ioctl+0x0/0x1e0 [radeon] Dec 2 17:31:52 PC-L kernel: [86040.920963] [<ffffffff81036dc9>] ? default_spin_lock_flags+0x9/0x10 Dec 2 17:31:52 PC-L kernel: [86040.920971] [<ffffffff81589a3f>] ? _raw_spin_lock_irqsave+0x2f/0x40 Dec 2 17:31:52 PC-L kernel: [86040.920980] [<ffffffff81082b5b>] ? __remove_hrtimer+0x3b/0xb0 Dec 2 17:31:52 PC-L kernel: [86040.920988] [<ffffffff810831b1>] ? lock_hrtimer_base+0x31/0x60 Dec 2 17:31:52 PC-L kernel: [86040.920996] [<ffffffff81162d0d>] vfs_ioctl+0x3d/0xd0 Dec 2 17:31:52 PC-L kernel: [86040.921004] [<ffffffff811635e1>] do_vfs_ioctl+0x81/0x340 Dec 2 17:31:52 PC-L kernel: [86040.921013] [<ffffffff81065a54>] ? sys_setitimer+0x64/0xe0 Dec 2 17:31:52 PC-L kernel: [86040.921020] [<ffffffff81163921>] sys_ioctl+0x81/0xa0 Dec 2 17:31:52 PC-L kernel: [86040.921030] [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/658131 Title: Overload the server ... __mutex_lock_slowpath -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
