# Kernel freeze, unkillable X (ubuntu 16.0.4.2) **URL:** \ **Category:** Linux\ **Created:** [October 12, 2017, 7:05am UTC](https://forums.developer.nvidia.com/t/kernel-freeze-unkillable-x-ubuntu-16-0-4-2/54133 "2017-10-12T07:05:31Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![vans554](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@vans554](https://forums.developer.nvidia.com/u/vans554)\ **Post date:** [October 12, 2017, 7:05am UTC](https://forums.developer.nvidia.com/t/kernel-freeze-unkillable-x-ubuntu-16-0-4-2/54133/1 "2017-10-12T07:05:31Z")
On kernel 4.4, Nvidia 381.22 drivers. When you attach a DFP to a grid card. [89.320648] nvidia-modeset: Allocated GPU:0 (GPU-a555a536-6ff1-f876-a430-3eabc71e5bbf) @ PCI:0000:83:00.0 [94.077780] nvidia-modeset: WARNING: GPU:0: Lost display notification (0:0x00000000); continuing. [436.176874] NMI watchdog: BUG: soft lockup - CPU#15 stuck for 23s! [Xorg:2227] [436.176878] Modules linked in: ipt\_MASQUERADE nf\_nat\_masquerade\_ipv4 nf\_conntrack\_netlink nfnetlink xfrm\_user xfrm\_algo iptable\_nat nf\_conntrack\_ipv4 nf\_defrag\_ipv4 nf\_nat\_ipv4 xt\_addrtype iptable\_filter ip\_tables xt\_conntrack x\_tables nf\_nat nf\_conntrack br\_netfilter bridge stp llc aufs nvidia\_uvm(POE) joydev input\_leds intel\_rapl x86\_pkg\_temp\_thermal intel\_powerclamp coretemp kvm\_intel kvm ipmi\_ssif binfmt\_misc ipmi\_si ipmi\_msghandler irqbypass serio\_raw lpc\_ich ioatdma wmi mei\_me sb\_edac 8250\_fintek shpchp dca edac\_core mei mac\_hid ib\_iser rdma\_cm iw\_cm ib\_cm ib\_sa ib\_mad ib\_core ib\_addr iscsi\_tcp libiscsi\_tcp libiscsi scsi\_transport\_iscsi autofs4 btrfs raid10 raid456 async\_raid6\_recov async\_memcpy async\_pq async\_xor async\_tx xor raid6\_pq raid1 raid0 multipath linear hid\_generic nvidia\_drm(POE) [436.176915] usbhid nvidia\_modeset(POE) hid crct10dif\_pclmul crc32\_pclmul ast ghash\_clmulni\_intel i2c\_algo\_bit aesni\_intel ttm aes\_x86\_64 lrw drm\_kms\_helper bnx2x syscopyarea e1000e sysfillrect vxlan ip6\_udp\_tunnel sysimgblt udp\_tunnel gf128mul fb\_sys\_fops isci glue\_helper ptp ablk\_helper ahci libsas cryptd psmouse nvidia(POE) drm libahci pps\_core scsi\_transport\_sas mdio libcrc32c fjes [436.176942] CPU: 15 PID: 2227 Comm: Xorg Tainted: P OEL 4.4.0-78-generic #99-Ubuntu [436.176944] Hardware name: OOMMM [436.176945] task: ffff881054f18e00 ti: ffff88085a2b8000 task.ti: ffff88085a2b8000 [436.176947] RIP: 0010:[] [] \_raw\_spin\_unlock\_irqrestore+0x15/0x20 [436.176951] RSP: 0018:ffff88085a2bb9f8 EFLAGS: 00000246 [436.176952] RAX: 000000000000381f RBX: 0000000000000000 RCX: 0000000000000000 [436.176953] RDX: 0000000000000cfc RSI: 0000000000000246 RDI: 0000000000000246 [436.176955] RBP: ffff88085a2bb9f8 R08: 0000000000000004 R09: ffff88085a2bba14 [436.176956] R10: 0000000000000000 R11: ffffffffc06880e0 R12: ffff88085a2bba60 [436.176957] R13: 0000000000000246 R14: ffff88085b352000 R15: 000000000001000c [436.176959] FS: 00007fe9f4604a00(0000) GS:ffff88105f3c0000(0000) knlGS:0000000000000000 [436.176960] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [436.176961] CR2: 00007f4c01ffae78 CR3: 0000000853876000 CR4: 00000000000406e0 [436.176962] Stack: [436.176963] ffff88085a2bba38 ffffffff8143f52b 0000000000000020 0000381f8143f47c [436.176965] 000000008296d3fd ffff88105b8e6120 ffff88105b8e6000 0000000000000002 [436.176967] ffff88085a2bba48 ffffffffc011691e ffff88085a2bba90 ffffffffc0109dcf [436.176969] Call Trace: [436.176975] [] pci\_bus\_read\_config\_dword+0x9b/0xb0 [436.177082] [] os\_pci\_read\_dword+0x2e/0x40 [nvidia] [436.177151] [] nv\_check\_pci\_config\_space+0x27f/0x300 [nvidia] [436.177220] [] nv\_verify\_pci\_config+0x81/0x90 [nvidia] [436.177331] [] \_nv017843rm+0x58/0x70 [nvidia] [436.177451] [] ? \_nv000219rm+0x4b/0x70 [nvidia] [436.177564] [] ? \_nv008370rm+0x1bf/0x2b0 [nvidia] [436.177688] [] ? \_nv002664rm+0x9/0x30 [nvidia] [436.177810] [] ? \_nv002839rm+0x15/0x80 [nvidia] [436.177933] [] ? \_nv005166rm+0x1e4/0x220 [nvidia] [436.178056] [] ? \_nv005165rm+0xc1/0xe0 [nvidia] [436.178178] [] ? \_nv020844rm+0x3e/0x1a0 [nvidia] [436.178296] [] ? \_nv000802rm+0x22b/0x3b0 [nvidia] [436.178414] [] ? \_nv006562rm+0x3c5/0x450 [nvidia] [436.178531] [] ? \_nv000802rm+0x36/0x3b0 [nvidia] [436.178649] [] ? \_nv003762rm+0x602/0x26c0 [nvidia] [436.178759] [] ? rm\_kernel\_rmapi\_op+0xb1/0x1f0 [nvidia] [436.178777] [] ? nvkms\_call\_rm+0x59/0x70 [nvidia\_modeset] [436.178790] [] ? \_nv002011kms+0x4e/0x70 [nvidia\_modeset] [436.178802] [] ? \_nv000200kms+0x147/0x360 [nvidia\_modeset] [436.178810] [] ? \_nv000198kms+0x40/0x40 [nvidia\_modeset] [436.178822] [] ? \_nv001992kms+0x10/0x20 [nvidia\_modeset] [436.178832] [] ? \_nv000197kms+0x5d/0xe0 [nvidia\_modeset] [436.178840] [] ? \_nv000333kms+0x6a/0x80 [nvidia\_modeset] [436.178848] [] ? nvKmsIoctl+0x163/0x1e0 [nvidia\_modeset] [436.178857] [] ? nvkms\_ioctl\_common+0x45/0x80 [nvidia\_modeset] [436.178865] [] ? nvkms\_ioctl+0x71/0xa0 [nvidia\_modeset] [436.178933] [] ? nvidia\_frontend\_compat\_ioctl+0x40/0x50 [nvidia] [436.179002] [] ? nvidia\_frontend\_unlocked\_ioctl+0xe/0x10 [nvidia] [436.179005] [] ? do\_vfs\_ioctl+0x29f/0x490 [436.179007] [] ? \_\_do\_page\_fault+0x1b4/0x400 [436.179009] [] ? SyS\_ioctl+0x79/0x90 [436.179012] [] ? entry\_SYSCALL\_64\_fastpath+0x16/0x71 [436.179013] Code: 90 66 66 90 eb c6 31 c0 eb ca e8 97 0c 84 ff 90 90 90 90 90 90 90 66 66 66 66 90 55 48 89 e5 c6 07 00 66 66 66 90 48 89 f7 57 9d \<66\> 66 90 66 90 5d c3 0f 1f 40 00 66 66 66 66 90 55 48 89 e5 c6 [440.424792] INFO: rcu\_sched self-detected stall on CPU [440.424796] 15-…: (14999 ticks this GP) idle=46f/140000000000001/0 softirq=3402/3402 fqs=14996 [440.424797] (t=15000 jiffies g=4291 c=4290 q=3781) [440.424801] Task dump for CPU 15: [440.424803] Xorg R running task 0 2227 2194 0x0040000a [440.424805] ffff881054f18e00 000000008296d3fd ffff88105f3c3da8 ffffffff810aecd9 [440.424807] 000000000000000f ffffffff81e52ec0 ffff88105f3c3dc0 ffffffff810b1527 [440.424809] 0000000000000010 ffff88105f3c3df0 ffffffff810e501e ffff88105f3d7b40 [440.424811] Call Trace: [440.424812] [] sched\_show\_task+0xa9/0x110 [440.424820] [] dump\_cpu\_task+0x37/0x40 [440.424824] [] rcu\_dump\_cpu\_stacks+0x8e/0xe0 [440.424826] [] rcu\_check\_callbacks+0x4fa/0x7f0 [440.424832] [] ? acct\_account\_cputime+0x1c/0x20 [440.424835] [] ? account\_system\_time+0x7f/0x110 [440.424849] [] ? tick\_sched\_handle.isra.14+0x60/0x60 [440.424851] [] update\_process\_times+0x39/0x60 [440.424853] [] tick\_sched\_handle.isra.14+0x25/0x60 [440.424855] [] tick\_sched\_timer+0x3d/0x70 [440.424857] [] \_\_hrtimer\_run\_queues+0x102/0x290 [440.424859] [] hrtimer\_interrupt+0xa8/0x1a0 [440.424863] [] local\_apic\_timer\_interrupt+0x38/0x60 [440.424867] [] smp\_apic\_timer\_interrupt+0x3d/0x50 [440.424869] [] apic\_timer\_interrupt+0x82/0x90 [440.424870] [] ? \_nv012410rm+0x60/0x60 [nvidia] [440.424987] [] ? \_raw\_spin\_unlock\_irqrestore+0x15/0x20 [440.424989] [] pci\_bus\_read\_config\_dword+0x9b/0xb0 [440.425060] [] os\_pci\_read\_dword+0x2e/0x40 [nvidia] [440.425129] [] nv\_check\_pci\_config\_space+0x1c9/0x300 [nvidia] [440.425198] [] nv\_verify\_pci\_config+0x81/0x90 [nvidia] [440.425310] [] \_nv017843rm+0x58/0x70 [nvidia] [440.425429] [] ? \_nv000219rm+0x4b/0x70 [nvidia] [440.425542] [] ? \_nv008370rm+0x1bf/0x2b0 [nvidia] [440.425664] [] ? \_nv002664rm+0x9/0x30 [nvidia] [440.425786] [] ? \_nv002839rm+0x15/0x80 [nvidia] [440.425909] [] ? \_nv005166rm+0x1e4/0x220 [nvidia] [440.426031] [] ? \_nv005165rm+0xc1/0xe0 [nvidia] [440.426154] [] ? \_nv020844rm+0x3e/0x1a0 [nvidia] [440.426272] [] ? \_nv000802rm+0x22b/0x3b0 [nvidia] [440.426390] [] ? \_nv006562rm+0x3c5/0x450 [nvidia] [440.426507] [] ? \_nv000802rm+0x36/0x3b0 [nvidia] [440.426625] [] ? \_nv003762rm+0x602/0x26c0 [nvidia] [440.426735] [] ? rm\_kernel\_rmapi\_op+0xb1/0x1f0 [nvidia] [440.426744] [] ? nvkms\_call\_rm+0x59/0x70 [nvidia\_modeset] [440.426757] [] ? \_nv002011kms+0x4e/0x70 [nvidia\_modeset] [440.426769] [] ? \_nv000200kms+0x147/0x360 [nvidia\_modeset] [440.426778] [] ? \_nv000198kms+0x40/0x40 [nvidia\_modeset] [440.426790] [] ? \_nv001992kms+0x10/0x20 [nvidia\_modeset] [440.426799] [] ? \_nv000197kms+0x5d/0xe0 [nvidia\_modeset] [440.426807] [] ? \_nv000333kms+0x6a/0x80 [nvidia\_modeset] [440.426816] [] ? nvKmsIoctl+0x163/0x1e0 [nvidia\_modeset] [440.426824] [] ? nvkms\_ioctl\_common+0x45/0x80 [nvidia\_modeset] [440.426832] [] ? nvkms\_ioctl+0x71/0xa0 [nvidia\_modeset] [440.426901] [] ? nvidia\_frontend\_compat\_ioctl+0x40/0x50 [nvidia] [440.426969] [] ? nvidia\_frontend\_unlocked\_ioctl+0xe/0x10 [nvidia] [440.426971] [] ? do\_vfs\_ioctl+0x29f/0x490 [440.426973] [] ? \_\_do\_page\_fault+0x1b4/0x400 [440.426975] [] ? SyS\_ioctl+0x79/0x90 [440.426977] [] ? entry\_SYSCALL\_64\_fastpath+0x16/0x71 [468.176270] NMI watchdog: BUG: soft lockup - CPU#15 stuck for 23s! [Xorg:2227] Kernel is stuck only way to soft reboot is echo 1 \> /proc/sys/kernel/sysrq echo b \> /proc/sysrq-trigger ---
**Author:** ![generix](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/generix/32/16024_2.png) [@generix](https://forums.developer.nvidia.com/u/generix)\ **Post date:** [October 12, 2017, 7:43am UTC](https://forums.developer.nvidia.com/t/kernel-freeze-unkillable-x-ubuntu-16-0-4-2/54133/2 "2017-10-12T07:43:54Z")
Please run nvidia-bug-report.sh as root and attach the tar.gz file it creates to your post. ---
**Author:** ![vans554](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@vans554](https://forums.developer.nvidia.com/u/vans554)\ **Post date:** [October 12, 2017, 7:57am UTC](https://forums.developer.nvidia.com/t/kernel-freeze-unkillable-x-ubuntu-16-0-4-2/54133/3 "2017-10-12T07:57:29Z")
That report has confidential information. I can send it privately to a Nvidia developer if required. Also if specific details are require I can snip them and paste here. Red msgs in dmesg. Full kernel lockup, unable to kill any processes, unable to kill X, unable to reboot, X uses 100% of 1 core. [1717.962551] NVRM: Xid (PCI:0000:83:00): 16, Head 00000000 Count 00000000 [1725.962373] NVRM: Xid (PCI:0000:83:00): 16, Head 00000000 Count 00000001 [1733.962260] NVRM: Xid (PCI:0000:83:00): 16, Head 00000000 Count 00000002 [1741.962155] NVRM: Xid (PCI:0000:83:00): 16, Head 00000000 Count 00000003 [1749.962043] NVRM: Xid (PCI:0000:83:00): 16, Head 00000000 Count 00000004 [1757.961929] NVRM: Xid (PCI:0000:83:00): 16, Head 00000000 Count 00000005 [1765.961821] NVRM: Xid (PCI:0000:83:00): 16, Head 00000000 Count 00000006 [1793.511952] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000947d:0:0 [1801.513345] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000927c:0:0 [1829.524787] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000947d:0:0 [1837.526350] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000927c:0:0 [1865.538484] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000947d:0:0 [1873.540016] nvidia-modeset: ERROR: GPU:0: Idling display engine timed out: 0x0000927c:0:0