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perseus

Member

Registered: 2007-01-28

Posts: 160

"Failed to start Load Kernel Modules" in Kernel 4.7.0-1

I have just upgraded this i686 installation to Kernel 4.7.0-1.  The system boots and, so far as I can tell, all modules are in fact loaded and everything is working.  Nevertheless there is a passage in my logs which looks worrying. It begins with the BUG at the start of the section quoted below, and ends with the  "Failed to start Load Kernel Modules." section at the end.

Should I be filing a bug report? (I hate to waste Devs' time with an issue I don't begin to understand).  Any other ideas / advice please?

Aug 12 12:30:54 neutron kernel: BUG: unable to handle kernel NULL pointer derefe
Aug 12 12:30:54 neutron kernel: IP: [<c122c22e>] internal_create_group+0xfe/0x31
Aug 12 12:30:55 neutron kernel: *pde = 00000000 
Aug 12 12:30:55 neutron kernel: Oops: 0000 [#1] PREEMPT SMP
Aug 12 12:30:55 neutron kernel: Modules linked in: it87(+) hwmon_vid ecryptfs cb
Aug 12 12:30:55 neutron kernel: CPU: 1 PID: 164 Comm: systemd-modules Not tainte
Aug 12 12:30:55 neutron kernel: Hardware name: Gigabyte Technology Co., Ltd. P35
Aug 12 12:30:55 neutron kernel: task: ebdec0c0 ti: ebd9a000 task.ti: ebd9a000
Aug 12 12:30:56 neutron kernel: EIP: 0060:[<c122c22e>] EFLAGS: 00010206 CPU: 1
Aug 12 12:30:56 neutron kernel: EIP is at internal_create_group+0xfe/0x310
Aug 12 12:30:56 neutron kernel: EAX: 00000124 EBX: 00000000 ECX: 00000000 EDX: 0
Aug 12 12:30:56 neutron kernel: ESI: ef9f23b8 EDI: ef9ec000 EBP: ebd9bafc ESP: e
Aug 12 12:30:56 neutron kernel:  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Aug 12 12:30:56 neutron kernel: CR0: 80050033 CR2: 00000128 CR3: 2c7c9000 CR4: 0
Aug 12 12:30:56 neutron kernel: Stack:
Aug 12 12:30:56 neutron kernel:  00000124 00000000 eb52e240 ec69a1b0 ebd9baf0 eb
Aug 12 12:30:57 neutron kernel:  eb52e240 ef9f0f9c 00000001 ebcac80c ebcac60c eb
Aug 12 12:31:04 neutron kernel:  [<ef94c7be>] sm_it87_init+0x7be/0x1000 [it87]
Aug 12 12:31:04 neutron kernel:  [<ef94c000>] ? 0xef94c000
Aug 12 12:31:04 neutron kernel:  [<c10004e2>] do_one_initcall+0x42/0x170
Aug 12 12:31:04 neutron kernel:  [<c11691c5>] ? kvfree+0x45/0x50
Aug 12 12:31:04 neutron kernel:  [<c119e408>] ? kmem_cache_alloc_trace+0x78/0x1d0
Aug 12 12:31:04 neutron kernel:  [<c114a198>] ? do_init_module+0x21/0x1a9
Aug 12 12:31:05 neutron kernel:  [<c114a198>] ? do_init_module+0x21/0x1a9
Aug 12 12:31:05 neutron kernel:  [<c114a1c7>] do_init_module+0x50/0x1a9
Aug 12 12:31:05 neutron kernel:  [<c10e6092>] load_module+0x25b2/0x2810
Aug 12 12:31:05 neutron kernel:  [<c10e63fd>] SyS_init_module+0x10d/0x170
Aug 12 12:31:05 neutron kernel:  [<c1001b5d>] do_fast_syscall_32+0x8d/0x140
Aug 12 12:31:05 neutron kernel:  [<c15311da>] sysenter_past_esp+0x47/0x75
Aug 12 12:31:05 neutron kernel: Code: 00 00 00 00 8b 45 ec 89 1c 24 8b 16 31 c9 e8 8a f2 ff ff 85 c0 0f 85 d2 00 00 00 83 c6 04 8b 06 83 45 e4 01 85 c0 74 
Aug 12 12:31:05 neutron kernel: EIP: [<c122c22e>] internal_create_group+0xfe/0x310 SS:ESP 0068:ebd9bac8
Aug 12 12:31:05 neutron kernel: CR2: 0000000000000128
Aug 12 12:31:05 neutron kernel: ---[ end trace c03a9fc9208d2766 ]---
Aug 12 12:31:05 neutron systemd[1]: systemd-modules-load.service: Main process exited, code=killed, status=9/KILL
Aug 12 12:31:05 neutron systemd[1]: Failed to start Load Kernel Modules.
Aug 12 12:31:05 neutron systemd[1]: systemd-modules-load.service: Unit entered failed state.
Aug 12 12:31:05 neutron systemd[1]: systemd-modules-load.service: Failed with result 'signal'

Last edited by perseus (2016-08-12 12:16:28)

perseus

Member

Registered: 2007-01-28

Posts: 160

Re: "Failed to start Load Kernel Modules" in Kernel 4.7.0-1

Some more information.  I think I should have included the following two lines, which come immediately before the BUG reported above:

Aug 12 12:30:54 neutron kernel: it87: Found IT8718F chip at 0x290, revision 5
Aug 12 12:30:54 neutron kernel: it87: Beeping is supported

I think that it87 provides information as to fan speeds, and should create /sys/class/hwmon/hwmon1/fan1_input and  /sys/class/hwmon/hwmon1/fan3_input.  Neither of those is now present, and conky complains about their absence. lsmod reports the presence of the it87 module, but perhaps there is still some issue with it in relation to the new kernel.