<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][BAT] igt* incomplete - /dev/kmsg buffer overrun, some messages lost" href="https://bugs.freedesktop.org/show_bug.cgi?id=103706#c13">Comment # 13</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [CI][BAT] igt* incomplete - /dev/kmsg buffer overrun, some messages lost" href="https://bugs.freedesktop.org/show_bug.cgi?id=103706">bug 103706</a> from <a class="email" href="mailto:marta.lofstedt@intel.com" title="Marta Löfstedt <marta.lofstedt@intel.com>"> Marta Löfstedt</a> <pre><a href="https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_492/fi-bxt-j4205/igt@vgem_basic@dmabuf-export.html">https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_492/fi-bxt-j4205/igt@vgem_basic@dmabuf-export.html</a> dmesg: <7>[ 473.265673] [IGT] vgem_basic: starting subtest debugfs <4>[ 473.266084] INFO: trying to register non-static key. <4>[ 473.266097] the code is fine but needs lockdep annotation. <4>[ 473.266103] turning off the locking correctness validator. then ftrace spamming: <0>[ 473.266614] Dumping ftrace buffer: <0>[ 473.266661] --------------------------------- <0>[ 473.266848] CPU:1 [LOST 153991 EVENTS] <...>-3366 1..s1 325544570us : intel_lrc_irq_handler: vecs0 in[0]: ctx=2.1, seqno=1adce ... <0>[ 486.328080] <idle>-0 2..s1 472520536us : intel_lrc_irq_handler: vecs0 out[0]: ctx=3.1, seqno=23667 the the backtraces: <4>[ 486.328666] Call Trace: <4>[ 486.328683] ? drm_mode_gamma_get_ioctl+0xf0/0xf0 <3>[ 486.617585] BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:34 <5>[ 486.623297] systemd-journald[195]: /dev/kmsg buffer overrun, some messages lost. <1>[ 486.627944] BUG: unable to handle kernel paging request at fffffffeecf32030 <3>[ 486.633071] BUG: scheduling while atomic: kworker/2:2/205/0x00000003 <4>[ 486.633091] INFO: lockdep is turned off. <4>[ 486.633310] WARNING: CPU: 2 PID: 205 at kernel/rcu/tree_plugin.h:329 rcu_note_context_switch+0x70/0x6c0 <7>[ 487.001473] [IGT] vgem_basic: executing <7>[ 487.030825] [IGT] vgem_basic: starting subtest dmabuf-export <3>[ 551.597068] INFO: rcu_preempt detected stalls on CPUs/tasks: <3>[ 551.597121] Tasks blocked on level-0 rcu_node (CPUs 0-3): P205 <3>[ 551.597164] (detected by 2, t=65002 jiffies, g=32449, c=32448, q=28149) Note pstore only has the first stuff: <a href="https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_492/fi-bxt-j4205/dmesg-1510488286_Oops_1.log">https://intel-gfx-ci.01.org/tree/drm-tip/IGTPW_492/fi-bxt-j4205/dmesg-1510488286_Oops_1.log</a> <0>[ 486.328080] <idle>-0 2..s1 472520536us : intel_lrc_irq_handler: vecs0 out[0]: ctx=3.1, seqno=23667 <0>[ 486.328117] --------------------------------- <4>[ 486.328138] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hwdep lpc_ich snd_hda_core snd_pcm r8169 mii mei_me prime_numbers mei i2c_hid pinctrl_broxton pinctrl_intel <4>[ 486.328309] CPU: 2 PID: 4341 Comm: vgem_basic Tainted: G U 4.14.0-rc8-CI-CI_DRM_3335+ #1 <4>[ 486.328343] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./J4205-ITX, BIOS P1.10 09/29/2016 <4>[ 486.328379] task: ffff88026b45a780 task.stack: ffffc9000112c000 <4>[ 486.328408] RIP: 0010:drm_framebuffer_info+0x77/0xc0 <4>[ 486.328428] RSP: 0018:ffffc9000112fd68 EFLAGS: 00010286 <4>[ 486.328453] RAX: 0000000000000000 RBX: fffffffffffffff8 RCX: 0000000000000001 <4>[ 486.328479] RDX: 0000000080000001 RSI: 0000000000000000 RDI: 00000000ffffffff <4>[ 486.328506] RBP: ffffc9000112fda0 R08: 0000000000000000 R09: 0000000000000000 <4>[ 486.328532] R10: ffffc9000112fd58 R11: ffffffff81607ef8 R12: ffff8801fd432950 <4>[ 486.328559] R13: ffff8801fd4328c8 R14: ffffffff81ce969b R15: ffff88026674e2b8 <4>[ 486.328586] FS: 00007fa4579e08c0(0000) GS:ffff88027fd00000(0000) knlGS:0000000000000000 <4>[ 486.328617] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4>[ 486.328640] CR2: 0000000000000010 CR3: 00000002649e3000 CR4: 00000000003406e0 <4>[ 486.328666] Call Trace: <4>[ 486.328683] ? drm_mode_gamma_get_ioctl+0xf0/0xf0 <4>[ 486.328709] seq_read+0xe1/0x3a0 <4>[ 486.328732] full_proxy_read+0x54/0x80 <4>[ 486.328753] __vfs_read+0x28/0x120 <4>[ 486.328772] ? putname+0x54/0x60 <4>[ 486.328791] ? rcu_read_lock_sched_held+0x7a/0x90 <4>[ 486.328814] ? entry_SYSCALL_64_fastpath+0x5/0xb1 <4>[ 486.328836] vfs_read+0xa8/0x150 <4>[ 486.328855] SyS_read+0x49/0xb0 <4>[ 486.328873] entry_SYSCALL_64_fastpath+0x1c/0xb1 <4>[ 486.328894] RIP: 0033:0x7fa4561c1500 <4>[ 486.328910] RSP: 002b:00007ffe7ac3d1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 <4>[ 486.328942] RAX: ffffffffffffffda RBX: ffffffff81492083 RCX: 00007fa4561c1500 <4>[ 486.328968] RDX: 000000000000003f RSI: 000055869cdacc50 RDI: 0000000000000005 <4>[ 486.328995] RBP: ffffc9000112ff88 R08: 0000000000000000 R09: 0000000000000000 <4>[ 486.329021] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 <4>[ 486.329047] R13: 000055869cdacc50 R14: 0000000000000000 R15: 0000000000000000 <4>[ 486.329078] ? __this_cpu_preempt_check+0x13/0x20 <4>[ 486.329102] Code: 20 06 00 00 48 a9 f8 ff ff ff 74 63 49 8b 84 24 a8 06 00 00 49 81 c4 a8 06 00 00 49 c7 c6 9b 96 ce 81 49 39 c4 48 8d 58 f8 74 2d <8b> 53 18 48 8d 7d c8 4c 89 f6 e8 4a 5c 00 00 48 8d 7d c8 48 89 <1>[ 486.329327] RIP: drm_framebuffer_info+0x77/0xc0 RSP: ffffc9000112fd68 <4>[ 486.329351] CR2: 0000000000000010 <4>[ 486.329370] ---[ end trace c108931ffc3d15ee ]---</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>