[Kernel-packages] [Bug 1702768] Comment bridged from LTC Bugzilla
*** This bug is a duplicate of bug 1701272 ***
https://bugs.launchpad.net/bugs/1701272
--- Comment From lagar...@br.ibm.com 2017-11-21 12:48 EDT---
Joseph,
Has this been released already?
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https://bugs.launchpad.net/bugs/1702768
Title:
Ubuntu 17.04 KVM: stack trace generated when enabling SRIOV in power
Status in The Ubuntu-power-systems project:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Zesty:
In Progress
Bug description:
---Problem Description---
When enabling SRIOV with kernel 4.10.0-26-generic in power will see this
stack trace:
[ 2084.079575] [ cut here ]
[ 2084.079583] WARNING: CPU: 120 PID: 734 at
/build/linux-TAhFXm/linux-4.10.0/arch/powerpc/platforms/powernv/npu-dma.c:78
pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079584] Modules linked in: mst_pciconf(OE) mst_pci(OE) xt_CHECKSUM
iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4
nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
nf_reject_ipv4 xt_tcpudp kvm_hv kvm_pr kvm ebtable_filter ebtables
ip6table_filter ip6_tables iptable_filter rdma_ucm(OE) ib_ucm(OE) ib_ipoib(OE)
ib_uverbs(OE) ib_umad(OE) mlx5_ib(OE) mlx4_ib(OE) binfmt_misc bridge stp llc
ipmi_powernv ipmi_devintf ipmi_msghandler powernv_rng powernv_op_panel
uio_pdrv_genirq leds_powernv uio ibmpowernv vmx_crypto sunrpc ib_iser(OE)
rdma_cm(OE) iw_cm(OE) ib_cm(OE) ib_core(OE) configfs iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi knem(OE) ip_tables x_tables autofs4 btrfs raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
[ 2084.079640] xor raid6_pq libcrc32c raid1 raid0 multipath linear
mlx4_en(OE) ses enclosure scsi_transport_sas crc32c_vpmsum tg3 mlx5_core(OE)
mlx4_core(OE) ipr devlink mlx_compat(OE)
[ 2084.079658] CPU: 120 PID: 734 Comm: kworker/120:0 Tainted: GW OE
4.10.0-26-generic #30-Ubuntu
[ 2084.079663] Workqueue: events work_for_cpu_fn
[ 2084.079665] task: c00fee60dc00 task.stack: c00fee534000
[ 2084.079666] NIP: c009c210 LR: c009d404 CTR:
[ 2084.079668] REGS: c00fee537700 TRAP: 0700 Tainted: GW OE
(4.10.0-26-generic)
[ 2084.079669] MSR: 9282b033
[ 2084.079677] CR: 42004428 XER: 2000
[ 2084.079678] CFAR: c009d400 SOFTE: 1
GPR00: c009d404 c00fee537980 c145d100
GPR04: 0aa6 c01fff70
00049188
GPR08: 0007 0001 0001
GPR12: 2200 cfbc3800 c010ef48
c00ff70ec540
GPR16: c00ffa622c58 c00ffa622a10 c00ffa6229a0
0001
GPR20: c1318de8 c0d700e8
0001
GPR24: c0d6f070 c0d6f050 c3d02000
c3d02098
GPR28: c00e92680060 081f
[ 2084.079702] NIP [c009c210] pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079704] LR [c009d404] pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079705] Call Trace:
[ 2084.079708] [c00fee5379b0] [c009d404]
pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079710] [c00fee537a80] [c0096c74]
pnv_pci_ioda_dma_set_mask+0xa4/0x150
[ 2084.079714] [c00fee537b00] [c00291a0] dma_set_mask+0x40/0xc0
[ 2084.079728] [c00fee537b20] [d000143531e4] init_one+0x33c/0x6a0
[mlx5_core]
[ 2084.079732] [c00fee537bd0] [c066ba9c]
local_pci_probe+0x6c/0x140
[ 2084.079734] [c00fee537c60] [c01016b8] work_for_cpu_fn+0x38/0x60
[ 2084.079737] [c00fee537c90] [c01061a0]
process_one_work+0x2b0/0x5a0
[ 2084.079740] [c00fee537d20] [c0106780] worker_thread+0x2f0/0x650
[ 2084.079742] [c00fee537dc0] [c010f0a4] kthread+0x164/0x1b0
[ 2084.079746] [c00fee537e30] [c000b4e8]
ret_from_kernel_thread+0x5c/0x74
[ 2084.079747] Instruction dump:
[ 2084.079748] 7c0802a6 fbe1fff8 f8010010 f821ffd1 7c690074 7929d182 0b09
2fa3
[ 2084.079753] 419e0060 e8630330 7c690074 7929d182 <0b09> 2fa3
419e0048 7c852378
[ 2084.079759] ---[ end trace 7bf01a937efd69d8 ]---
This issue was introduced by this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c3b89effc281704d5395282c800c45e453235f6
(Subject: powerpc/powernv: Add sanity checks to pnv_pci_get_{gpu|npu}_dev )
and the solution will be to add this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=377aa6b0efbaa29cfeecd8b9244641217f9544ca
which reads: "p
[Kernel-packages] [Bug 1702768] Comment bridged from LTC Bugzilla
*** This bug is a duplicate of bug 1701272 ***
https://bugs.launchpad.net/bugs/1701272
--- Comment From lagar...@br.ibm.com 2017-11-21 12:51 EDT---
Hi Joseph,
Sorry, I just saw that the latest comments never reached IBM Bugzilla.
Closing this one from IBM side as well. Thanks!
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https://bugs.launchpad.net/bugs/1702768
Title:
Ubuntu 17.04 KVM: stack trace generated when enabling SRIOV in power
Status in The Ubuntu-power-systems project:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Zesty:
In Progress
Bug description:
---Problem Description---
When enabling SRIOV with kernel 4.10.0-26-generic in power will see this
stack trace:
[ 2084.079575] [ cut here ]
[ 2084.079583] WARNING: CPU: 120 PID: 734 at
/build/linux-TAhFXm/linux-4.10.0/arch/powerpc/platforms/powernv/npu-dma.c:78
pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079584] Modules linked in: mst_pciconf(OE) mst_pci(OE) xt_CHECKSUM
iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4
nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
nf_reject_ipv4 xt_tcpudp kvm_hv kvm_pr kvm ebtable_filter ebtables
ip6table_filter ip6_tables iptable_filter rdma_ucm(OE) ib_ucm(OE) ib_ipoib(OE)
ib_uverbs(OE) ib_umad(OE) mlx5_ib(OE) mlx4_ib(OE) binfmt_misc bridge stp llc
ipmi_powernv ipmi_devintf ipmi_msghandler powernv_rng powernv_op_panel
uio_pdrv_genirq leds_powernv uio ibmpowernv vmx_crypto sunrpc ib_iser(OE)
rdma_cm(OE) iw_cm(OE) ib_cm(OE) ib_core(OE) configfs iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi knem(OE) ip_tables x_tables autofs4 btrfs raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
[ 2084.079640] xor raid6_pq libcrc32c raid1 raid0 multipath linear
mlx4_en(OE) ses enclosure scsi_transport_sas crc32c_vpmsum tg3 mlx5_core(OE)
mlx4_core(OE) ipr devlink mlx_compat(OE)
[ 2084.079658] CPU: 120 PID: 734 Comm: kworker/120:0 Tainted: GW OE
4.10.0-26-generic #30-Ubuntu
[ 2084.079663] Workqueue: events work_for_cpu_fn
[ 2084.079665] task: c00fee60dc00 task.stack: c00fee534000
[ 2084.079666] NIP: c009c210 LR: c009d404 CTR:
[ 2084.079668] REGS: c00fee537700 TRAP: 0700 Tainted: GW OE
(4.10.0-26-generic)
[ 2084.079669] MSR: 9282b033
[ 2084.079677] CR: 42004428 XER: 2000
[ 2084.079678] CFAR: c009d400 SOFTE: 1
GPR00: c009d404 c00fee537980 c145d100
GPR04: 0aa6 c01fff70
00049188
GPR08: 0007 0001 0001
GPR12: 2200 cfbc3800 c010ef48
c00ff70ec540
GPR16: c00ffa622c58 c00ffa622a10 c00ffa6229a0
0001
GPR20: c1318de8 c0d700e8
0001
GPR24: c0d6f070 c0d6f050 c3d02000
c3d02098
GPR28: c00e92680060 081f
[ 2084.079702] NIP [c009c210] pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079704] LR [c009d404] pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079705] Call Trace:
[ 2084.079708] [c00fee5379b0] [c009d404]
pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079710] [c00fee537a80] [c0096c74]
pnv_pci_ioda_dma_set_mask+0xa4/0x150
[ 2084.079714] [c00fee537b00] [c00291a0] dma_set_mask+0x40/0xc0
[ 2084.079728] [c00fee537b20] [d000143531e4] init_one+0x33c/0x6a0
[mlx5_core]
[ 2084.079732] [c00fee537bd0] [c066ba9c]
local_pci_probe+0x6c/0x140
[ 2084.079734] [c00fee537c60] [c01016b8] work_for_cpu_fn+0x38/0x60
[ 2084.079737] [c00fee537c90] [c01061a0]
process_one_work+0x2b0/0x5a0
[ 2084.079740] [c00fee537d20] [c0106780] worker_thread+0x2f0/0x650
[ 2084.079742] [c00fee537dc0] [c010f0a4] kthread+0x164/0x1b0
[ 2084.079746] [c00fee537e30] [c000b4e8]
ret_from_kernel_thread+0x5c/0x74
[ 2084.079747] Instruction dump:
[ 2084.079748] 7c0802a6 fbe1fff8 f8010010 f821ffd1 7c690074 7929d182 0b09
2fa3
[ 2084.079753] 419e0060 e8630330 7c690074 7929d182 <0b09> 2fa3
419e0048 7c852378
[ 2084.079759] ---[ end trace 7bf01a937efd69d8 ]---
This issue was introduced by this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c3b89effc281704d5395282c800c45e453235f6
(Subject: powerpc/powernv: Add sanity checks to pnv_pci_get_{gpu|npu}_dev )
and the solution will be to add this commit:
https://git.kernel.org/pub/scm/linux/kernel/git
[Kernel-packages] [Bug 1702768] Comment bridged from LTC Bugzilla
--- Comment From cls...@us.ibm.com 2017-07-10 15:54 EDT--- (In reply to comment #5) > I built a test kernel with a pick of commit 377aa6b0efba. The test kernel > can be downloaded from: > > http://kernel.ubuntu.com/~jsalisbury/lp1702768/ > > Can you test this kernel and see if it resolves this bug? I tried this kernel and it is ok. [ 128.224664] (0004:01:00.0): E-Switch: E-Switch enable SRIOV: nvfs(1) mode (1) [ 128.234634] (0004:01:00.0): E-Switch: SRIOV enabled: active vports(2) [ 128.234818] mlx5_core 0004:01:00.0: VF BAR0: [mem 0x2400-0x2401 64bit pref] shifted to [mem 0x2400-0x2401 64bit pref] (Disabling 1 VFs shifted by 0) [ 128.234836] pci 0004:01: 0.2: [PE# 00] VF 0004:01:00.2 associated with PE#0 [ 128.235086] pci 0004:01: 0.2: [PE# 00] Setting up 32-bit TCE table at 0..8000 [ 128.238861] pci 0004:01: 0.2: [PE# 00] Setting up window#0 0..7fff pg=1000 [ 128.238972] pci 0004:01: 0.2: [PE# 00] Enabling 64-bit DMA bypass [ 128.344614] pci 0004:01:00.2: [15b3:1014] type 00 class 0x02 [ 128.344942] pci 0004:01:00.2: Max Payload Size set to 512 (was 128, max 512) [ 128.345403] iommu: Adding device 0004:01:00.2 to group 6 [ 128.345871] mlx5_core 0004:01:00.2: enabling device ( -> 0002) [ 128.345907] mlx5_core 0004:01:00.2: Using 64-bit DMA iommu bypass [ 128.346076] mlx5_core 0004:01:00.2: firmware version: 12.20.1010 [ 128.902589] mlx5_core 0004:01:00.2: MLX5E: StrdRq(0) RqSz(1024) StrdSz(1) RxCqeCmprss(0) [ 128.903017] mlx5_core 0004:01:00.2: Assigned random MAC address 2a:fc:b7:49:03:1b [ 129.007113] mlx5_core 0004:01:00.2 enP4p1s0f2: renamed from eth0 [ 129.015731] mlx5_ib: Mellanox Connect-IB Infiniband driver v2.2-1 (Feb 2014) uname -a 4.10.0-26-generic #30~lp1702768 SMP Mon Jul 10 18:37:50 UTC 2017 ppc64le ppc64le ppc64le GNU/Linux -- 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/1702768 Title: Ubuntu 17.04 KVM: stack trace generated when enabling SRIOV in power Status in The Ubuntu-power-systems project: In Progress Status in linux package in Ubuntu: In Progress Bug description: ---Problem Description--- When enabling SRIOV with kernel 4.10.0-26-generic in power will see this stack trace: [ 2084.079575] [ cut here ] [ 2084.079583] WARNING: CPU: 120 PID: 734 at /build/linux-TAhFXm/linux-4.10.0/arch/powerpc/platforms/powernv/npu-dma.c:78 pnv_pci_get_npu_dev+0x40/0xb0 [ 2084.079584] Modules linked in: mst_pciconf(OE) mst_pci(OE) xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp kvm_hv kvm_pr kvm ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter rdma_ucm(OE) ib_ucm(OE) ib_ipoib(OE) ib_uverbs(OE) ib_umad(OE) mlx5_ib(OE) mlx4_ib(OE) binfmt_misc bridge stp llc ipmi_powernv ipmi_devintf ipmi_msghandler powernv_rng powernv_op_panel uio_pdrv_genirq leds_powernv uio ibmpowernv vmx_crypto sunrpc ib_iser(OE) rdma_cm(OE) iw_cm(OE) ib_cm(OE) ib_core(OE) configfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi knem(OE) ip_tables x_tables autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx [ 2084.079640] xor raid6_pq libcrc32c raid1 raid0 multipath linear mlx4_en(OE) ses enclosure scsi_transport_sas crc32c_vpmsum tg3 mlx5_core(OE) mlx4_core(OE) ipr devlink mlx_compat(OE) [ 2084.079658] CPU: 120 PID: 734 Comm: kworker/120:0 Tainted: GW OE 4.10.0-26-generic #30-Ubuntu [ 2084.079663] Workqueue: events work_for_cpu_fn [ 2084.079665] task: c00fee60dc00 task.stack: c00fee534000 [ 2084.079666] NIP: c009c210 LR: c009d404 CTR: [ 2084.079668] REGS: c00fee537700 TRAP: 0700 Tainted: GW OE (4.10.0-26-generic) [ 2084.079669] MSR: 9282b033 [ 2084.079677] CR: 42004428 XER: 2000 [ 2084.079678] CFAR: c009d400 SOFTE: 1 GPR00: c009d404 c00fee537980 c145d100 GPR04: 0aa6 c01fff70 00049188 GPR08: 0007 0001 0001 GPR12: 2200 cfbc3800 c010ef48 c00ff70ec540 GPR16: c00ffa622c58 c00ffa622a10 c00ffa6229a0 0001 GPR20: c1318de8 c0d700e8 0001 GPR24: c0d6f070 c0d6f050 c3d02000 c3d02098 GPR28: c00e92680060 081f [ 2084.079702] NIP [c009c210] pnv_pci_get_npu_dev+0x40/0xb0 [ 2084.079704] LR [c009d404] pnv_npu_try_dma_set_bypas
[Kernel-packages] [Bug 1702768] Comment bridged from LTC Bugzilla
*** This bug is a duplicate of bug 1701272 ***
https://bugs.launchpad.net/bugs/1701272
--- Comment From lagar...@br.ibm.com 2017-08-04 21:34 EDT---
jsalisbury,
This one might also apply to Ubuntu 16.04.3 as well.
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https://bugs.launchpad.net/bugs/1702768
Title:
Ubuntu 17.04 KVM: stack trace generated when enabling SRIOV in power
Status in The Ubuntu-power-systems project:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Zesty:
In Progress
Bug description:
---Problem Description---
When enabling SRIOV with kernel 4.10.0-26-generic in power will see this
stack trace:
[ 2084.079575] [ cut here ]
[ 2084.079583] WARNING: CPU: 120 PID: 734 at
/build/linux-TAhFXm/linux-4.10.0/arch/powerpc/platforms/powernv/npu-dma.c:78
pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079584] Modules linked in: mst_pciconf(OE) mst_pci(OE) xt_CHECKSUM
iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4
nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
nf_reject_ipv4 xt_tcpudp kvm_hv kvm_pr kvm ebtable_filter ebtables
ip6table_filter ip6_tables iptable_filter rdma_ucm(OE) ib_ucm(OE) ib_ipoib(OE)
ib_uverbs(OE) ib_umad(OE) mlx5_ib(OE) mlx4_ib(OE) binfmt_misc bridge stp llc
ipmi_powernv ipmi_devintf ipmi_msghandler powernv_rng powernv_op_panel
uio_pdrv_genirq leds_powernv uio ibmpowernv vmx_crypto sunrpc ib_iser(OE)
rdma_cm(OE) iw_cm(OE) ib_cm(OE) ib_core(OE) configfs iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi knem(OE) ip_tables x_tables autofs4 btrfs raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
[ 2084.079640] xor raid6_pq libcrc32c raid1 raid0 multipath linear
mlx4_en(OE) ses enclosure scsi_transport_sas crc32c_vpmsum tg3 mlx5_core(OE)
mlx4_core(OE) ipr devlink mlx_compat(OE)
[ 2084.079658] CPU: 120 PID: 734 Comm: kworker/120:0 Tainted: GW OE
4.10.0-26-generic #30-Ubuntu
[ 2084.079663] Workqueue: events work_for_cpu_fn
[ 2084.079665] task: c00fee60dc00 task.stack: c00fee534000
[ 2084.079666] NIP: c009c210 LR: c009d404 CTR:
[ 2084.079668] REGS: c00fee537700 TRAP: 0700 Tainted: GW OE
(4.10.0-26-generic)
[ 2084.079669] MSR: 9282b033
[ 2084.079677] CR: 42004428 XER: 2000
[ 2084.079678] CFAR: c009d400 SOFTE: 1
GPR00: c009d404 c00fee537980 c145d100
GPR04: 0aa6 c01fff70
00049188
GPR08: 0007 0001 0001
GPR12: 2200 cfbc3800 c010ef48
c00ff70ec540
GPR16: c00ffa622c58 c00ffa622a10 c00ffa6229a0
0001
GPR20: c1318de8 c0d700e8
0001
GPR24: c0d6f070 c0d6f050 c3d02000
c3d02098
GPR28: c00e92680060 081f
[ 2084.079702] NIP [c009c210] pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079704] LR [c009d404] pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079705] Call Trace:
[ 2084.079708] [c00fee5379b0] [c009d404]
pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079710] [c00fee537a80] [c0096c74]
pnv_pci_ioda_dma_set_mask+0xa4/0x150
[ 2084.079714] [c00fee537b00] [c00291a0] dma_set_mask+0x40/0xc0
[ 2084.079728] [c00fee537b20] [d000143531e4] init_one+0x33c/0x6a0
[mlx5_core]
[ 2084.079732] [c00fee537bd0] [c066ba9c]
local_pci_probe+0x6c/0x140
[ 2084.079734] [c00fee537c60] [c01016b8] work_for_cpu_fn+0x38/0x60
[ 2084.079737] [c00fee537c90] [c01061a0]
process_one_work+0x2b0/0x5a0
[ 2084.079740] [c00fee537d20] [c0106780] worker_thread+0x2f0/0x650
[ 2084.079742] [c00fee537dc0] [c010f0a4] kthread+0x164/0x1b0
[ 2084.079746] [c00fee537e30] [c000b4e8]
ret_from_kernel_thread+0x5c/0x74
[ 2084.079747] Instruction dump:
[ 2084.079748] 7c0802a6 fbe1fff8 f8010010 f821ffd1 7c690074 7929d182 0b09
2fa3
[ 2084.079753] 419e0060 e8630330 7c690074 7929d182 <0b09> 2fa3
419e0048 7c852378
[ 2084.079759] ---[ end trace 7bf01a937efd69d8 ]---
This issue was introduced by this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c3b89effc281704d5395282c800c45e453235f6
(Subject: powerpc/powernv: Add sanity checks to pnv_pci_get_{gpu|npu}_dev )
and the solution will be to add this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=377aa6b0efbaa29cfeecd8b9244641217f
[Kernel-packages] [Bug 1702768] Comment bridged from LTC Bugzilla
*** This bug is a duplicate of bug 1701272 ***
https://bugs.launchpad.net/bugs/1701272
--- Comment From lagar...@br.ibm.com 2017-09-14 08:47 EDT---
Joseph,
Any updates on this one? At this point in time I am not even sure it is
worthwhile to provide a fix for Ubuntu 17.04. We should target Ubuntu
17.10 probably.
--
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/1702768
Title:
Ubuntu 17.04 KVM: stack trace generated when enabling SRIOV in power
Status in The Ubuntu-power-systems project:
In Progress
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Zesty:
In Progress
Bug description:
---Problem Description---
When enabling SRIOV with kernel 4.10.0-26-generic in power will see this
stack trace:
[ 2084.079575] [ cut here ]
[ 2084.079583] WARNING: CPU: 120 PID: 734 at
/build/linux-TAhFXm/linux-4.10.0/arch/powerpc/platforms/powernv/npu-dma.c:78
pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079584] Modules linked in: mst_pciconf(OE) mst_pci(OE) xt_CHECKSUM
iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4
nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT
nf_reject_ipv4 xt_tcpudp kvm_hv kvm_pr kvm ebtable_filter ebtables
ip6table_filter ip6_tables iptable_filter rdma_ucm(OE) ib_ucm(OE) ib_ipoib(OE)
ib_uverbs(OE) ib_umad(OE) mlx5_ib(OE) mlx4_ib(OE) binfmt_misc bridge stp llc
ipmi_powernv ipmi_devintf ipmi_msghandler powernv_rng powernv_op_panel
uio_pdrv_genirq leds_powernv uio ibmpowernv vmx_crypto sunrpc ib_iser(OE)
rdma_cm(OE) iw_cm(OE) ib_cm(OE) ib_core(OE) configfs iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi knem(OE) ip_tables x_tables autofs4 btrfs raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
[ 2084.079640] xor raid6_pq libcrc32c raid1 raid0 multipath linear
mlx4_en(OE) ses enclosure scsi_transport_sas crc32c_vpmsum tg3 mlx5_core(OE)
mlx4_core(OE) ipr devlink mlx_compat(OE)
[ 2084.079658] CPU: 120 PID: 734 Comm: kworker/120:0 Tainted: GW OE
4.10.0-26-generic #30-Ubuntu
[ 2084.079663] Workqueue: events work_for_cpu_fn
[ 2084.079665] task: c00fee60dc00 task.stack: c00fee534000
[ 2084.079666] NIP: c009c210 LR: c009d404 CTR:
[ 2084.079668] REGS: c00fee537700 TRAP: 0700 Tainted: GW OE
(4.10.0-26-generic)
[ 2084.079669] MSR: 9282b033
[ 2084.079677] CR: 42004428 XER: 2000
[ 2084.079678] CFAR: c009d400 SOFTE: 1
GPR00: c009d404 c00fee537980 c145d100
GPR04: 0aa6 c01fff70
00049188
GPR08: 0007 0001 0001
GPR12: 2200 cfbc3800 c010ef48
c00ff70ec540
GPR16: c00ffa622c58 c00ffa622a10 c00ffa6229a0
0001
GPR20: c1318de8 c0d700e8
0001
GPR24: c0d6f070 c0d6f050 c3d02000
c3d02098
GPR28: c00e92680060 081f
[ 2084.079702] NIP [c009c210] pnv_pci_get_npu_dev+0x40/0xb0
[ 2084.079704] LR [c009d404] pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079705] Call Trace:
[ 2084.079708] [c00fee5379b0] [c009d404]
pnv_npu_try_dma_set_bypass+0x144/0x250
[ 2084.079710] [c00fee537a80] [c0096c74]
pnv_pci_ioda_dma_set_mask+0xa4/0x150
[ 2084.079714] [c00fee537b00] [c00291a0] dma_set_mask+0x40/0xc0
[ 2084.079728] [c00fee537b20] [d000143531e4] init_one+0x33c/0x6a0
[mlx5_core]
[ 2084.079732] [c00fee537bd0] [c066ba9c]
local_pci_probe+0x6c/0x140
[ 2084.079734] [c00fee537c60] [c01016b8] work_for_cpu_fn+0x38/0x60
[ 2084.079737] [c00fee537c90] [c01061a0]
process_one_work+0x2b0/0x5a0
[ 2084.079740] [c00fee537d20] [c0106780] worker_thread+0x2f0/0x650
[ 2084.079742] [c00fee537dc0] [c010f0a4] kthread+0x164/0x1b0
[ 2084.079746] [c00fee537e30] [c000b4e8]
ret_from_kernel_thread+0x5c/0x74
[ 2084.079747] Instruction dump:
[ 2084.079748] 7c0802a6 fbe1fff8 f8010010 f821ffd1 7c690074 7929d182 0b09
2fa3
[ 2084.079753] 419e0060 e8630330 7c690074 7929d182 <0b09> 2fa3
419e0048 7c852378
[ 2084.079759] ---[ end trace 7bf01a937efd69d8 ]---
This issue was introduced by this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4c3b89effc281704d5395282c800c45e453235f6
(Subject: powerpc/powernv: Add sanity checks to pnv_pci_get_{gpu|npu}_dev )
and the solution will be to add this commit:
https://git
