WARNING: CPU: 0 PID: 1 at /build/linux-dp17Ba/linux-4.9.18/arch/powerpc/lib/feature-fixups.c:208 check_features+0x38/0x7c

Hi all,

Does this dmesg output speaks to anyone here (smp kernel):


[    4.767389] ------------[ cut here ]------------
[    4.774668] WARNING: CPU: 0 PID: 1 at
/build/linux-dp17Ba/linux-4.9.18/arch/powerpc/lib/feature-fixups.c:208
check_features+0x38/0x7c
[    4.782256] Modules linked in:
[    4.789766] CPU: 0 PID: 1 Comm: swapper Not tainted 4.9.0-2-powerpc
#1 Debian 4.9.18-1
[    4.797441] task: df4db1a0 task.stack: df4dc000
[    4.805089] NIP: c0776484 LR: c0776484 CTR: 00000000
[    4.812736] REGS: df4dddd0 TRAP: 0700   Not tainted
(4.9.0-2-powerpc Debian 4.9.18-1)
[    4.820485] MSR: 00029032 <EE,ME,IR,DR,RI>
[    4.820622]   CR: 242ff422  XER: 00000000
[ 4.828326]
[    4.828326] GPR00: c0776484 df4dde80 df4db1a0 0000002c 00000004
000000ff ffffffff 000000ff
[    4.828326] GPR08: 000000ff c085271c c085271c 00000000 222ff444
00000000 c00047ec 00000000
[    4.828326] GPR16: 00000000 00000000 00000000 00000000 00000000
00000000 00000000 c0860000
[    4.828326] GPR24: c076ecdc c07d2e80 c0766720 c07b2310 00000000
c085f5b0 c0860000 c07b0000
NIP [c0776484] check_features+0x38/0x7c
[    4.875135] LR [c0776484] check_features+0x38/0x7c
[    4.882958] Call Trace:
[    4.890751] [df4dde80] [c0776484] check_features+0x38/0x7c (unreliable)
[    4.898650] [df4dde90] [c0004154] do_one_initcall+0x4c/0x188
[    4.906477] [df4ddf00] [c076f578] kernel_init_freeable+0x164/0x200
[    4.914269] [df4ddf30] [c0004810] kernel_init+0x24/0x134
[    4.921942] [df4ddf40] [c0016500] ret_from_kernel_thread+0x5c/0x64
[    4.929536] Instruction dump:
[    4.937046] bfc10008 90010014 3fc0c086 811ef028 3fe0c07b 80ff349c
8108000c 7f883800
41be0014 3c60c06b 38632f34 4be5f601 <0fe00000> 815ef028 3bff349c 813f0004
[    4.952413] ---[ end trace de3271b83777a44e ]---

From a non smp kernel:

[    0.000000] Total memory = 512MB; using 1024kB for hash table (at cff00000)
[    0.000000] Linux version 4.9.0-2-powerpc
(debian-kernel@lists.debian.org) (gcc version 6.3.0 20170321 (Debian
6.3.0-11) ) #1 Debian 4.9.18-1 (2017-03-30)
[    0.000000] Found initrd at 0xc0c40000:0xc19744bc
[    0.000000] Found UniNorth memory controller & host bridge @
0xf8000000 revision: 0x11
[    0.000000] Mapped at 0xff7c0000
[    0.000000] Found a Keylargo mac-io controller, rev: 3, mapped at 0xff740000
[    0.000000] PowerMac motherboard: PowerMac G4 Silver
[    0.000000] Using PowerMac machine description


Thanks

Mathieu Malaterre [off-list ref] writes:

Hi all,

Does this dmesg output speaks to anyone here (smp kernel):


[    4.767389] ------------[ cut here ]------------
[    4.774668] WARNING: CPU: 0 PID: 1 at
/build/linux-dp17Ba/linux-4.9.18/arch/powerpc/lib/feature-fixups.c:208
check_features+0x38/0x7c

Is there anything prior to the "cut here" line?

cheers

Am 2017-05-04 um 12:15 schrieb Michael Ellerman:

Mathieu Malaterre [off-list ref] writes:

quoted

Hi all,

Does this dmesg output speaks to anyone here (smp kernel):


[    4.767389] ------------[ cut here ]------------
[    4.774668] WARNING: CPU: 0 PID: 1 at
/build/linux-dp17Ba/linux-4.9.18/arch/powerpc/lib/feature-fixups.c:208
check_features+0x38/0x7c

Is there anything prior to the "cut here" line?

cheers

I rebooted the system today (mind the new timings). This is the kernel:

# uname -a
Linux G4QS 4.9.0-2-powerpc-smp #1 SMP Debian 4.9.18-1 (2017-03-30) ppc 
GNU/Linux

This is the line above the cut line:
CPU features changed after feature patching!

And here 10 lines above the cut line, with time:
[    5.008787] PowerMac i2c bus mac-io 0 registered
[    5.008925] i2c i2c-2: No i2c address for 
/pci@f2000000/mac-io@17/i2c@18000/i2c-modem
[    5.009355] PowerMac i2c bus uni-n 1 registered
[    5.009611] PowerMac i2c bus uni-n 0 registered
[    5.009860] ledtrig-cpu: registered to indicate activity on CPUs
[    5.017397] NET: Registered protocol family 10
[    5.025443] mip6: Mobile IPv6
[    5.032460] NET: Registered protocol family 17
[    5.039579] mpls_gso: MPLS GSO support
[    5.046767] CPU features changed after feature patching!

I've posted the whole dmesg output on pastebin, valid for one month as 
of this posting:
https://pastebin.com/mK0zvVxQ


Cheers,
Linux User #330250

Am 2017-05-06 um 16:11 schrieb Linux User #330250:

Am 2017-05-04 um 12:15 schrieb Michael Ellerman:

quoted

Mathieu Malaterre [off-list ref] writes:

quoted

Hi all,

Does this dmesg output speaks to anyone here (smp kernel):


[    4.767389] ------------[ cut here ]------------
[    4.774668] WARNING: CPU: 0 PID: 1 at
/build/linux-dp17Ba/linux-4.9.18/arch/powerpc/lib/feature-fixups.c:208
check_features+0x38/0x7c

Is there anything prior to the "cut here" line?

cheers

# uname -a
Linux G4QS 4.9.0-2-powerpc-smp #1 SMP Debian 4.9.18-1 (2017-03-30) ppc 
GNU/Linux

Follow-up: I updated to 4.9.0-3-powerpc-smp Debian kernel, which is 
4.9.25-1 (2017-05-02) and the fault is still the same.
Overnight I also compiled a vanilla 4.11.0 kernel using the Debian 
config as a starting point and "make olddefconfig" for a couple of new 
config options, booted it today and it gives the same messages.

This is 4.9.25-1 (Debian 4.9.0-3) smp kernel: https://pastebin.com/vq7XQ39U
NET: Registered protocol family 17
mpls_gso: MPLS GSO support
CPU features changed after feature patching!
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at 
/build/linux-pGBmiG/linux-4.9.25/arch/powerpc/lib/feature-fixups.c:208 
check_features+0x38/0x7c
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.9.0-3-powerpc-smp #1 Debian 
4.9.25-1
task: df4aa9a0 task.stack: df4e8000
NIP: c07e3a00 LR: c07e3a00 CTR: 00000000
REGS: df4e9dd0 TRAP: 0700   Not tainted  (4.9.0-3-powerpc-smp Debian 
4.9.25-1)
MSR: 00029032 <EE,ME,IR,DR,RI>
   CR: 28000422  XER: 00000000

GPR00: c07e3a00 df4e9e80 df4aa9a0 0000002c 00009032 0000010d ffffffff 
00000000
GPR08: 00000001 c0861064 c0861064 00000000 22000444 00000000 c00048b8 
00000000
GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 
c08d0000
GPR24: c07dbcec c08449b4 c07d3ab4 c0823434 00000000 c08d6610 c08d0000 
c0820000
NIP [c07e3a00] check_features+0x38/0x7c
LR [c07e3a00] check_features+0x38/0x7c
Call Trace:
[df4e9e80] [c07e3a00] check_features+0x38/0x7c (unreliable)
[df4e9e90] [c0004214] do_one_initcall+0x4c/0x188
[df4e9f00] [c07dc5c8] kernel_init_freeable+0x198/0x230
[df4e9f30] [c00048dc] kernel_init+0x24/0x128
[df4e9f40] [c0018080] ret_from_kernel_thread+0x5c/0x64

--- interrupt: 0 at   (null)
     LR =   (null)

Instruction dump:
bfc10008 90010014 3fc0c08d 811e6028 3fe0c082 80ff45c4 8108000c 7f883800
41be0014 3c60c072 3863cb38 4be574f5 <0fe00000> 815e6028 3bff45c4 813f0004
---[ end trace db276e67fcbb7c47 ]---
registered taskstats version 1
zswap: loaded using pool lzo/zbud
ima: No TPM chip found, activating TPM-bypass!


This is my vanilla 4.11.0 kernel (based on Debian kernel config): 
https://pastebin.com/n5nPMS9g
NET: Registered protocol family 17
mpls_gso: MPLS GSO support
CPU features changed after feature patching!
------------[ cut here ]------------
WARNING: CPU: 0 PID: 1 at arch/powerpc/lib/feature-fixups.c:209 
check_features+0x38/0x7c
Modules linked in:
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.11.0 #1
task: df4da020 task.stack: df4dc000
NIP: c0822768 LR: c0822768 CTR: 00000000
REGS: df4ddde0 TRAP: 0700   Not tainted  (4.11.0)
MSR: 00029032 <EE,ME,IR,DR,RI>
   CR: 28301422  XER: 00000000

GPR00: c0822768 df4dde90 df4da020 0000002c 00001032 0000010e ffffffff 
1f2b3000
GPR08: 00001032 c08a2208 c08a2208 00000000 28301422 00000000 c0004880 
00000000
GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 
c0920000
GPR24: c081a9c8 c0883c2c c08129a0 c0863494 00000000 c091a670 c0920000 
c0860000
NIP [c0822768] check_features+0x38/0x7c
LR [c0822768] check_features+0x38/0x7c
Call Trace:
[df4dde90] [c0822768] check_features+0x38/0x7c (unreliable)
[df4ddea0] [c00041ec] do_one_initcall+0x4c/0x178
[df4ddf00] [c081b2b4] kernel_init_freeable+0x1a0/0x238
[df4ddf30] [c00048a4] kernel_init+0x24/0x120
[df4ddf40] [c0018900] ret_from_kernel_thread+0x5c/0x64
Instruction dump:
bfc10008 90010014 3fc0c092 811ea028 3fe0c086 80ff4624 8108000c 7f883800
41be0014 3c60c076 3863d154 4be44e45 <0fe00000> 815ea028 3bff4624 813f0004
---[ end trace c67815660f5f31c3 ]---
registered taskstats version 1
zswap: loaded using pool lzo/zbud
ima: No TPM chip found, activating TPM-bypass! (rc=-19)

On Sun, May 7, 2017 at 9:53 AM, Linux User #330250
[off-list ref] wrote:

Any update/suggestion so far ?

Thanks