[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Po-Hsu Lin 
Tested on a KVM with 4.4.0-138 amd64 lowlatency kernel, didn't spot this
issue.

Need to test on "gonzo"

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https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is a POTENTIAL REGRESSION found on a SRU testing node "gonzo",
  with 4.4 amd64 lowlatency kernel.

  This issue cannot be reproduced with the kernel in -updates (4.4.0-137)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  
  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0 
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP 
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  [] 
handle_mm_fault+0x13ed/0x1b70
  16:50:05 DEBUG| [stdout] [ 1422.066743]  [] ? 
atime_needs_update+0x6f/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.138510]  [] ? 
touch_atime+0x33/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.202997]  [] ? 
generic_file_read_iter+0x5dc/0x6b0
  16:50:05 DEBUG| [stdout] [ 1422.281009]  [] ? 
find_vma+0x68/0x70
  16:

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Po-Hsu Lin 
It looks like this issue is a bit random, with 4.4.0-137-lowlatency
amd64 kernel on gonzo, the kernel oops happened with sysfs and tee test.

** Description changed:

- This is a POTENTIAL REGRESSION found on a SRU testing node "gonzo", with
- 4.4 amd64 lowlatency kernel.
+ This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
+ kernel.
  
  This issue cannot be reproduced with the kernel in -updates (4.4.0-137)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well
- 
  
  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
- 16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0 
- 16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP 
+ 16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
+ 16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  [] 
handle_mm_fault+0x13ed/0x1b70
  16:50:05 DEBUG| [stdout] [ 1422.066743]  [] ? 
atime_needs_update+0x6f/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.138510]  [] ? 
touch_atime+0x33/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.202997]  [] ? 
generic_file_read_iter+0x5dc/0x6b0
  16:50:05 DEBUG| [stdout] [ 1422.281009]  [] ? 
find_vma+0x68/0x70
  16:50:05 DEBUG| [stdout] [ 1422.342374]  [] ? 
follo

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Po-Hsu Lin 
** Also affects: ubuntu-kernel-tests
   Importance: Undecided
   Status: New

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  [] 
handle_mm_fault+0x13ed/0x1b70
  16:50:05 DEBUG| [stdout] [ 1422.066743]  [] ? 
atime_needs_update+0x6f/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.138510]  [] ? 
touch_atime+0x33/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.202997]  [] ? 
generic_file_read_iter+0x5dc/0x6b0
  16:50:05 DEBUG| [stdout] [ 1422.281009]  [] ? 
find_vma+

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
So I believe this is the sysfs test that causes the issues, the
subsequent tee timer stressors just appear to be broken because the
sysfs stressor got the kernel into a mangled broken state.

I was able to run the tee and timer stressors on a cleanly booted
4.4.0-137-lowlatency kernel without any issues.  Running the sysfs
stressor caused a load of oopses as follows:

  740.873265] iounmap: bad address c90004da
[  740.929503] CPU: 4 PID: 1788 Comm: stress-ng-sysfs Not tainted 
4.4.0-138-lowlatency #164-Ubuntu
[  740.929509] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 
04/26/2012
[  740.929512]  0286 5dc48b8f33ce7222 8800da813bc0 
8140dc61
[  740.929536]  8800df1f9d80 c90004da 8800da813be0 
8106ec1f
[  740.929541]  8800df1f9d80 c90004da 8800da813bf0 
8106ec5c
[  740.929544] Call Trace:
[  740.929553]  [] dump_stack+0x63/0x82
[  740.929558]  [] iounmap.part.1+0x7f/0x90
[  740.929563]  [] iounmap+0x2c/0x30
[  740.929572]  [] acpi_os_map_cleanup.part.9+0x31/0x40
[  740.929587]  [] acpi_os_unmap_iomem+0xbe/0xf0
[  740.929607]  [] read_log+0xad/0x170
[  740.929619]  [] tpm_binary_bios_measurements_open+0x37/0x90
[  740.929626]  [] do_dentry_open+0x202/0x310
[  740.929632]  [] ? 
tpm_ascii_bios_measurements_show+0x260/0x260
[  740.929645]  [] vfs_open+0x54/0x80
[  740.929656]  [] ? may_open+0x5b/0xf0
[  740.929662]  [] path_openat+0x1b6/0x13a0
[  740.929670]  [] ? __do_page_fault+0x23a/0x440
[  740.929678]  [] ? free_one_page+0x191/0x340
[  740.929686]  [] do_filp_open+0x91/0x100
[  740.929695]  [] ? mntput_no_expire+0x2e/0x1b0
[  740.929702]  [] ? __alloc_fd+0xc7/0x190
[  740.929720]  [] do_sys_open+0x138/0x2b0
[  740.929735]  [] SyS_open+0x1e/0x20
[  740.929747]  [] entry_SYSCALL_64_fastpath+0x22/0xc1
[  749.735460] BUG: unable to handle kernel paging request at 00010001
[  749.818685] IP: [] kmem_cache_alloc_trace+0x76/0x210
[  749.896706] PGD d3e68067 PUD 0 
[  749.934172] Oops:  [#1] PREEMPT SMP 
[  749.981003] Modules linked in: kvm_amd kvm irqbypass ipmi_devintf ipmi_ssif 
dcdbas input_leds joydev amd64_edac_mod 8250_fintek k10temp fam15h_power 
serio_raw edac_mce_amd ipmi_si i2c_piix4 acpi_power_meter edac_core 
ipmi_msghandler shpchp 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 libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel aesni_intel hid_generic aes_x86_64 mptsas lrw mptscsih 
gf128mul usbhid glue_helper ablk_helper pata_acpi hid cryptd psmouse 
pata_atiixp mptbase ahci bnx2 libahci scsi_transport_sas
[  750.743813] CPU: 4 PID: 1791 Comm: stress-ng-sysfs Not tainted 
4.4.0-138-lowlatency #164-Ubuntu
[  750.847825] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 
04/26/2012
[  750.937282] task: 8800d3e45580 ti: 8800da824000 task.ti: 
8800da824000
[  751.026734] RIP: 0010:[]  [] 
kmem_cache_alloc_trace+0x76/0x210
[  751.133881] RSP: 0018:8800da827c18  EFLAGS: 00010202
[  751.197334] RAX:  RBX:  RCX: 0b1af204
[  751.282627] RDX: 0b1af004 RSI: 0b1af004 RDI: 0001a740
[  751.367921] RBP: 8800da827c58 R08: 880215003b00 R09: 8129e635
[  751.453209] R10: 0637760b R11:  R12: 024000c0
[  751.538502] R13: 00010001 R14: 88020fc24900 R15: 880215003b00
[  751.623798] FS:  7f8e5a1f4700() GS:88021570() 
knlGS:
[  751.720535] CS:  0010 DS:  ES:  CR0: 80050033
[  751.789183] CR2: 00010001 CR3: db29e000 CR4: 000406f0
[  751.874477] Stack:
[  751.898415]   88020fc24900 0030 

[  751.986848]  88020f67cf00 8800d94cf980 88020fc24900 
8802124386a8
[  752.075289]  8800da827c98 8129e635  
88020fc24900
[  752.163722] Call Trace:
[  752.192853]  [] kernfs_fop_open+0x275/0x370
[  752.261505]  [] do_dentry_open+0x202/0x310
[  752.329117]  [] ? kernfs_fop_release+0x60/0x60
[  752.400893]  [] vfs_open+0x54/0x80
[  752.460186]  [] ? may_open+0x5b/0xf0
[  752.521559]  [] path_openat+0x1b6/0x13a0
[  752.587093]  [] ? bad_area_access_error+0x43/0x50
[  752.661986]  [] do_filp_open+0x91/0x100
[  752.726486]  [] ? __alloc_fd+0xc7/0x190
[  752.790980]  [] do_sys_open+0x138/0x2b0
[  752.855479]  [] SyS_open+0x1e/0x20
[  752.914775]  [] entry_SYSCALL_64_fastpath+0x22/0xc1
[  752.991744] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 48 01 00 
00 4d 85 ed 0f 84 3f 01 00 00 49 63 47 20 49 8b 3f 48 8d 8a 00 02 00 00 <49> 8b 
5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 
[  753.217863] RIP  [] kmem_cache_alloc_trace+0x76/0x210
[  753.296928]  RSP 
[  753.338534] CR2: 00010001
[

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
Exercising /sys/kernel/security/tpm0/ascii_bios_measurements causes:

[  381.545913] iounmap: bad address c9000e62
[  381.602107] CPU: 2 PID: 1833 Comm: stress-ng-sysfs Not tainted 
4.4.0-138-lowlatency #164-Ubuntu
[  381.602109] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 
04/26/2012
[  381.602111]  0286 fc02aae09141f60c 8800daa03bc0 
8140dc61
[  381.602117]  88021145cbc0 c9000e62 8800daa03be0 
8106ec1f
[  381.602124]  88021145cbc0 c9000e62 8800daa03bf0 
8106ec5c
[  381.602127] Call Trace:
[  381.602134]  [] dump_stack+0x63/0x82
[  381.602138]  [] iounmap.part.1+0x7f/0x90
[  381.602140]  [] iounmap+0x2c/0x30
[  381.602144]  [] acpi_os_map_cleanup.part.9+0x31/0x40
[  381.602147]  [] acpi_os_unmap_iomem+0xbe/0xf0
[  381.602151]  [] read_log+0xad/0x170
[  381.602153]  [] tpm_ascii_bios_measurements_open+0x37/0x90
[  381.602158]  [] do_dentry_open+0x202/0x310
[  381.602160]  [] ? 
tpm_binary_bios_measurements_open+0x90/0x90
[  381.602164]  [] vfs_open+0x54/0x80
[  381.602166]  [] ? may_open+0x5b/0xf0
[  381.602169]  [] path_openat+0x1b6/0x13a0
[  381.602172]  [] ? free_one_page+0x191/0x340
[  381.602175]  [] do_filp_open+0x91/0x100
[  381.602179]  [] ? common_file_perm+0x70/0x1b0
[  381.602181]  [] ? __alloc_fd+0xc7/0x190
[  381.602185]  [] do_sys_open+0x138/0x2b0
[  381.602187]  [] SyS_open+0x1e/0x20
[  381.602191]  [] entry_SYSCALL_64_fastpath+0x22/0xc1

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https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
..and after that last oops we get:

ubuntu@gonzo:~$ dmesg
Killed
ubuntu@gonzo:~$ top
Killed
ubuntu@gonzo:~$ ps
Killed

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  [] 
handle_mm_fault+0x13ed/0x1b70
  16:50:05 DEBUG| [stdout] [ 1422.066743]  [] ? 
atime_needs_update+0x6f/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.138510]  [] ? 
touch_atime+0x33/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.202997]  [] ? 
generic_file_read_iter+0x5dc/0x6b0
  16:50:05 DEBUG| [st

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
..after this hangs, I see:

[  261.473664] Oops:  [#1] PREEMPT SMP 
[  261.520488] Modules linked in: ipmi_ssif ipmi_devintf kvm_amd kvm dcdbas 
irqbypass input_leds serio_raw joydev amd64_edac_mod edac_mce_amd fam15h_power 
edac_core k10temp ipmi_si shpchp i2c_piix4 ipmi_msghandler 8250_fintek mac_hid 
acpi_power_meter 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 
libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
hid_generic ghash_clmulni_intel aesni_intel mptsas aes_x86_64 pata_acpi lrw 
mptscsih gf128mul usbhid ahci glue_helper ablk_helper hid cryptd psmouse 
pata_atiixp mptbase libahci bnx2 scsi_transport_sas
[  262.283269] CPU: 3 PID: 1846 Comm: stress-ng Not tainted 
4.4.0-138-lowlatency #164-Ubuntu
[  262.381038] Hardware name: Dell Inc. PowerEdge R415/08WNM9, BIOS 1.9.3 
04/26/2012
[  262.470483] task: 8800d8323900 ti: 8800ded34000 task.ti: 
8800ded34000
[  262.559926] RIP: 0010:[]  [] 
kmem_cache_alloc+0x72/0x200
[  262.660817] RSP: 0018:8800ded37d18  EFLAGS: 00010206
[  262.724260] RAX:  RBX: 88020f630e10 RCX: 22a95403
[  262.809545] RDX: 22a95203 RSI: 22a95203 RDI: 0001a740
[  262.894829] RBP: 8800ded37d48 R08: 811d8ebc R09: 0001
[  262.980114] R10: 88021eff9000 R11:  R12: 02000200
[  263.065397] R13: 7ffcfd834000 R14: 880215003b00 R15: 880215003b00
[  263.150683] FS:  7f0599fc9700() GS:8802156c() 
knlGS:
[  263.247404] CS:  0010 DS:  ES:  CR0: 80050033
[  263.316050] CR2: 7ffcfd834000 CR3: d83a6000 CR4: 000406f0
[  263.401334] Stack:
[  263.425258]  7f059881dfff 88020f630e10  
8800d3d84f40
[  263.513690]  0001 8800dae95a40 8800ded37da0 
811d8ebc
[  263.602120]   88020ef23518 88020f630e88 
88020ef23590
[  263.690550] Call Trace:
[  263.719678]  [] anon_vma_clone+0x6c/0x200
[  263.786248]  [] anon_vma_fork+0x32/0x140
[  263.851779]  [] copy_process+0x1474/0x1c70
[  263.919385]  [] _do_fork+0x80/0x390
[  263.979714]  [] SyS_clone+0x19/0x20
[  264.040041]  [] entry_SYSCALL_64_fastpath+0x22/0xc1
[  264.117009] Code: 08 48 39 f2 75 e7 48 83 78 10 00 4c 8b 28 0f 84 40 01 00 
00 4d 85 ed 0f 84 37 01 00 00 49 63 46 20 49 8b 3e 48 8d 8a 00 02 00 00 <49> 8b 
5c 05 00 4c 89 e8 65 48 0f c7 0f 0f 94 c0 84 c0 74 ab 49 
[  264.343111] RIP  [] kmem_cache_alloc+0x72/0x200
[  264.415924]  RSP 
[  264.457529] CR2: 7ffcfd834000
[  264.497083] ---[ end trace 9af64fddce7496da ]---

and further opens seem to hang up.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp li

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
It appears to hang when more than one thread is concurrently opening
/sys/kernel/security/tpm0/ascii_bios_measurements

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  [] 
handle_mm_fault+0x13ed/0x1b70
  16:50:05 DEBUG| [stdout] [ 1422.066743]  [] ? 
atime_needs_update+0x6f/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.138510]  [] ? 
touch_atime+0x33/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.202997]  [] ? 
generic_file_read_iter+0x5dc/0x6b0
  16:50:05 DEBUG| [s

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
And is reproduced in previous kernel 4.4.0-137-lowlatency too, so not a
regression on -138

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https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  [] 
handle_mm_fault+0x13ed/0x1b70
  16:50:05 DEBUG| [stdout] [ 1422.066743]  [] ? 
atime_needs_update+0x6f/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.138510]  [] ? 
touch_atime+0x33/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.202997]  [] ? 
generic_file_read_iter+0x5dc/0x6b0
  16:50:05 DEBUG| [stdout] [ 1422.281009]  [] ?

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
And reproducible way back to 4.4.0-21-lowlatency too

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1796250

Title:
  timer test in ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  [] 
handle_mm_fault+0x13ed/0x1b70
  16:50:05 DEBUG| [stdout] [ 1422.066743]  [] ? 
atime_needs_update+0x6f/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.138510]  [] ? 
touch_atime+0x33/0xd0
  16:50:05 DEBUG| [stdout] [ 1422.202997]  [] ? 
generic_file_read_iter+0x5dc/0x6b0
  16:50:05 DEBUG| [stdout] [ 1422.281009]  [] ? 
find_vma+0x68/0x70
  16:50:05 DEBUG|

[Kernel-packages] [Bug 1796250] Re: timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

2018-10-05 Thread Colin Ian King 
** Changed in: linux (Ubuntu)
 Assignee: (unassigned) => Colin Ian King (colin-king)

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
   Status: Incomplete => In Progress

** Summary changed:

- timer test in ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency
+ sysfs test ubuntu_stress_smoke_test will cause kernel oops on X-lowlatency

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1796250

Title:
  sysfs test ubuntu_stress_smoke_test will cause kernel oops on
  X-lowlatency

Status in ubuntu-kernel-tests:
  New
Status in linux package in Ubuntu:
  In Progress

Bug description:
  This is found on a SRU testing node "gonzo", with 4.4 amd64 lowlatency
  kernel.

  This issue cannot be reproduced with the kernel 4.4.0-137 in -updates (a bit 
random, see comment #4)
  And cannot be reproduced with the AMD64 generic kernel in -proposed 
(4.4.0-138) as well

  16:50:01 DEBUG| [stdout] timer STARTING
  16:50:05 ERROR| [stderr] 
/home/ubuntu/autotest/client/tests/ubuntu_stress_smoke_test/ubuntu_stress_smoke_test.sh:
 line 111: 39506 Killed  ./stress-ng -v -t ${DURATION} --${s} 
${INSTANCES} ${STRESS_OPTIONS} &> ${TMP_FILE}
  16:50:05 DEBUG| [stdout] timer RETURNED 137
  16:50:05 DEBUG| [stdout] timer FAILED (kernel oopsed)
  16:50:05 DEBUG| [stdout] [ 1418.982110] BUG: unable to handle kernel paging 
request at 00010001
  16:50:05 DEBUG| [stdout] [ 1419.065329] IP: [] 
kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1419.137102] PGD 16f6dd067 PUD 0
  16:50:05 DEBUG| [stdout] [ 1419.175602] Oops:  [#6] SMP
  16:50:05 DEBUG| [stdout] [ 1419.214101] Modules linked in: unix_diag 
binfmt_misc vhost_net vhost macvtap cuse macvlan dccp_ipv4 dccp 
jitterentropy_rng algif_rng ghash_generic salsa20_generic salsa20_x86_64 
camellia_generic camellia_aesni_avx_x86_64 camellia_x86_64 cast6_avx_x86_64 
cast6_generic cast_common serpent_avx_x86_64 serpent_sse2_x86_64 
serpent_generic twofish_generic twofish_avx_x86_64 twofish_x86_64_3way 
twofish_x86_64 twofish_common xts algif_skcipher tgr192 wp512 rmd320 rmd256 
rmd160 rmd128 md4 algif_hash af_alg aufs kvm_amd kvm ipmi_devintf ipmi_ssif 
irqbypass dcdbas ipmi_si fam15h_power acpi_power_meter joydev input_leds 
ipmi_msghandler serio_raw i2c_piix4 k10temp amd64_edac_mod 8250_fintek mac_hid 
shpchp edac_mce_amd edac_core ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core 
ib_addr iscsi_tcp libiscsi_tcp libiscsi
  16:50:05 DEBUG| [stdout] [ 1420.062172]  scsi_transport_iscsi autofs4 btrfs 
raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor 
raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul 
ghash_clmulni_intel mptsas mptscsih pata_acpi hid_generic aesni_intel 
aes_x86_64 mptbase lrw gf128mul glue_helper psmouse ahci ablk_helper usbhid 
cryptd pata_atiixp libahci scsi_transport_sas bnx2 hid
  16:50:05 DEBUG| [stdout] [ 1420.472200] CPU: 3 PID: 39506 Comm: 
ubuntu_stress_s Tainted: G  D 4.4.0-138-generic #164-Ubuntu
  16:50:05 DEBUG| [stdout] [ 1420.588693] Hardware name: Dell Inc. PowerEdge 
R415/08WNM9, BIOS 1.9.3 04/26/2012
  16:50:05 DEBUG| [stdout] [ 1420.678138] task: 880177823800 ti: 
88016a5b task.ti: 88016a5b
  16:50:05 DEBUG| [stdout] [ 1420.767584] RIP: 0010:[]  
[] kmem_cache_alloc+0x77/0x1f0
  16:50:05 DEBUG| [stdout] [ 1420.868478] RSP: 0018:88016a5b3bd0  EFLAGS: 
00010202
  16:50:05 DEBUG| [stdout] [ 1420.931924] RAX:  RBX: 
024000c0 RCX: 0129e216
  16:50:05 DEBUG| [stdout] [ 1421.017209] RDX: 0129e215 RSI: 
024000c0 RDI: 0001a5c0
  16:50:05 DEBUG| [stdout] [ 1421.102496] RBP: 88016a5b3c00 R08: 
8802156da5c0 R09: 00010001
  16:50:05 DEBUG| [stdout] [ 1421.187782] R10: 88000ff0 R11: 
0ff0 R12: 024000c0
  16:50:05 DEBUG| [stdout] [ 1421.273070] R13: 811d53e8 R14: 
880215003b00 R15: 880215003b00
  16:50:05 DEBUG| [stdout] [ 1421.358354] FS:  7f1323076700() 
GS:8802156c() knlGS:
  16:50:05 DEBUG| [stdout] [ 1421.455081] CS:  0010 DS:  ES:  CR0: 
80050033
  16:50:05 DEBUG| [stdout] [ 1421.523728] CR2: 00010001 CR3: 
00016f6dc000 CR4: 000406f0
  16:50:05 DEBUG| [stdout] [ 1421.609013] Stack:
  16:50:05 DEBUG| [stdout] [ 1421.632941]   88019c080a28 
 cfff
  16:50:05 DEBUG| [stdout] [ 1421.721371]  7fffefec 88020ff29000 
88016a5b3c38 811d53e8
  16:50:05 DEBUG| [stdout] [ 1421.809805]  0002 88019c080a28 
cfff 7fffefec
  16:50:05 DEBUG| [stdout] [ 1421.898237] Call Trace:
  16:50:05 DEBUG| [stdout] [ 1421.927367]  [] 
anon_vma_prepare+0x48/0x180
  16:50:05 DEBUG| [stdout] [ 1421.996017]  []