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* Re: panic happened on 5.8.6-rc2-650d8f2
       [not found] <CABE0yyhP+MSNM4-GJ7hDN+kNMg=LWrg9eze5zFt3S6jCN9P7_Q@mail.gmail.com>
@ 2020-09-07  0:36 ` Jianlin Shi
  2020-09-07  2:02   ` Jens Axboe
  0 siblings, 1 reply; 4+ messages in thread
From: Jianlin Shi @ 2020-09-07  0:36 UTC (permalink / raw)
  To: linux-block; +Cc: Rachel Sibley

 Hi,

 panic happened when we run jobs on 5.8.6-rc2-650d8f2:
 https://beaker.engineering.redhat.com/recipes/8756377#task115008997

 and the core trace is as follows, have you ever seen this before?

 [ 7522.385926] BUG: kernel NULL pointer dereference, address: 0000000000000000
 [ 7522.393694] #PF: supervisor read access in kernel mode
 [ 7522.399425] #PF: error_code(0x0000) - not-present page
 [ 7522.405154] PGD 0 P4D 0
 [ 7522.407977] Oops: 0000 [#1] SMP PTI
 [ 7522.411866] CPU: 14 PID: 668 Comm: kworker/14:1H Kdump: loaded
Tainted: G             L    5.8.6-rc2-650d8f2.cki #1
 [ 7522.423510] Hardware name: Dell Inc. PowerEdge R630/0CNCJW, BIOS
1.2.10 03/09/2015
 [ 7522.431959] Workqueue: kblockd blk_mq_run_work_fn
 [ 7522.437206] RIP: 0010:__list_del_entry_valid+0x2d/0x4c
 [ 7522.442936] Code: 4c 8b 47 08 48 b8 00 01 00 00 00 00 ad de 48 39
c2 0f 84 71 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c0 0f 84 91
00 00 00 <49> 8b 30 48 39 fe 0f 85 71 00 00 00 48 8b 52 08 48 39 f2 0f
85 56
 [ 7522.463891] RSP: 0018:ffffa5b9009dfcd8 EFLAGS: 00010017
 [ 7522.469719] RAX: dead000000000122 RBX: ffff8b458d4c9950 RCX:
0000000000000000
 [ 7522.477680] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
ffff8b448a753938
 [ 7522.485640] RBP: ffff8b448a753898 R08: 0000000000000000 R09:
ffff8b45bb6bb32c
 [ 7522.493600] R10: 0000000000000018 R11: 0000000000000018 R12:
ffff8b448a753810
 [ 7522.501560] R13: ffff8b44993e2800 R14: 0000000000000000 R15:
ffff8b458d07c900
 [ 7522.509520] FS:  0000000000000000(0000) GS:ffff8b45bfd80000(0000)
knlGS:0000000000000000
 [ 7522.518548] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 [ 7522.524957] CR2: 0000000000000000 CR3: 0000000875570005 CR4:
00000000001606e0
 [ 7522.532917] Call Trace:
 [ 7522.535647]  bfq_idle_extract+0x52/0xb0
 [ 7522.539926]  bfq_put_idle_entity+0x12/0x60
 [ 7522.544494]  bfq_bfqq_served+0xb0/0x190
 [ 7522.548770]  bfq_dispatch_request+0x2c2/0x1070
 [ 7522.553727]  blk_mq_do_dispatch_sched+0xa4/0x140
 [ 7522.558879]  ? newidle_balance+0x1c0/0x390
 [ 7522.563446]  __blk_mq_sched_dispatch_requests+0x159/0x160
 [ 7522.569467]  blk_mq_sched_dispatch_requests+0x30/0x60
 [ 7522.575102]  __blk_mq_run_hw_queue+0x49/0x110
 [ 7522.579962]  process_one_work+0x1b4/0x370
 [ 7522.584434]  worker_thread+0x53/0x3e0
 [ 7522.588517]  ? process_one_work+0x370/0x370
 [ 7522.593180]  kthread+0x119/0x140
 [ 7522.596779]  ? __kthread_bind_mask+0x60/0x60
 [ 7522.601541]  ret_from_fork+0x22/0x30
 [ 7522.605528] Modules linked in: scsi_transport_iscsi crypto_user
can_bcm pptp gre l2tp_ip6 l2tp_ip l2tp_core ip6_udp_tunnel udp_tunnel
rfcomm can_raw hidp bnep nfc af_key mpls_router ip_tunnel
vsock_loopback vmw_vsock_virtio_transport_common
vmw_vsock_vmci_transport vsock vmw_vmci kcm ieee802154_socket
ieee802154 bluetooth ecdh_generic ecc fcrypt pcbc rxrpc pppoe pppox
smc ib_core atm can mlx4_en mlx4_core n_gsm pps_ldisc slcan
ppp_synctty n_hdlc mkiss ax25 ppp_async ppp_generic slip slhc nls_utf8
isofs minix binfmt_misc nfsv3 nfs_acl rds brd exfat vfat fat loop sctp
tun xt_multiport xt_nat xt_addrtype xt_mark xt_conntrack xt_MASQUERADE
nft_counter xt_comment nft_compat nft_chain_nat nf_nat nf_conntrack
nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink overlay fuse
rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache
rfkill intel_rapl_msr intel_rapl_common sb_edac x86_pkg_temp_thermal
intel_powerclamp coretemp iTCO_wdt intel_pmc_bxt iTCO_vendor_support
sunrpc dcdbas
 [ 7522.605556]  kvm_intel kvm irqbypass rapl intel_cstate
intel_uncore pcspkr ipmi_ssif lpc_ich mei_me mei igb dca ipmi_si
ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables xfs mgag200
lpfc drm_vram_helper drm_kms_helper cec nvmet_fc drm_ttm_helper nvmet
ttm crct10dif_pclmul nvme_fc crc32_pclmul crc32c_intel nvme_fabrics
drm ghash_clmulni_intel i2c_algo_bit nvme_core megaraid_sas
scsi_transport_fc wmi [last unloaded: dummy]
 [ 7522.744918] CR2: 0000000000000000
 [ 7522.748613] ---[ end trace ed34032a61d7e2a6 ]---

 Thanks & Best Regards,

 Jianlin Shi


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: panic happened on 5.8.6-rc2-650d8f2
  2020-09-07  0:36 ` panic happened on 5.8.6-rc2-650d8f2 Jianlin Shi
@ 2020-09-07  2:02   ` Jens Axboe
  2020-09-07  7:05     ` Paolo Valente
  0 siblings, 1 reply; 4+ messages in thread
From: Jens Axboe @ 2020-09-07  2:02 UTC (permalink / raw)
  To: Jianlin Shi, linux-block; +Cc: Rachel Sibley, Paolo Valente

CC Paolo


On 9/6/20 6:36 PM, Jianlin Shi wrote:
>  Hi,
> 
>  panic happened when we run jobs on 5.8.6-rc2-650d8f2:
>  https://beaker.engineering.redhat.com/recipes/8756377#task115008997
> 
>  and the core trace is as follows, have you ever seen this before?
> 
>  [ 7522.385926] BUG: kernel NULL pointer dereference, address: 0000000000000000
>  [ 7522.393694] #PF: supervisor read access in kernel mode
>  [ 7522.399425] #PF: error_code(0x0000) - not-present page
>  [ 7522.405154] PGD 0 P4D 0
>  [ 7522.407977] Oops: 0000 [#1] SMP PTI
>  [ 7522.411866] CPU: 14 PID: 668 Comm: kworker/14:1H Kdump: loaded
> Tainted: G             L    5.8.6-rc2-650d8f2.cki #1
>  [ 7522.423510] Hardware name: Dell Inc. PowerEdge R630/0CNCJW, BIOS
> 1.2.10 03/09/2015
>  [ 7522.431959] Workqueue: kblockd blk_mq_run_work_fn
>  [ 7522.437206] RIP: 0010:__list_del_entry_valid+0x2d/0x4c
>  [ 7522.442936] Code: 4c 8b 47 08 48 b8 00 01 00 00 00 00 ad de 48 39
> c2 0f 84 71 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c0 0f 84 91
> 00 00 00 <49> 8b 30 48 39 fe 0f 85 71 00 00 00 48 8b 52 08 48 39 f2 0f
> 85 56
>  [ 7522.463891] RSP: 0018:ffffa5b9009dfcd8 EFLAGS: 00010017
>  [ 7522.469719] RAX: dead000000000122 RBX: ffff8b458d4c9950 RCX:
> 0000000000000000
>  [ 7522.477680] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
> ffff8b448a753938
>  [ 7522.485640] RBP: ffff8b448a753898 R08: 0000000000000000 R09:
> ffff8b45bb6bb32c
>  [ 7522.493600] R10: 0000000000000018 R11: 0000000000000018 R12:
> ffff8b448a753810
>  [ 7522.501560] R13: ffff8b44993e2800 R14: 0000000000000000 R15:
> ffff8b458d07c900
>  [ 7522.509520] FS:  0000000000000000(0000) GS:ffff8b45bfd80000(0000)
> knlGS:0000000000000000
>  [ 7522.518548] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>  [ 7522.524957] CR2: 0000000000000000 CR3: 0000000875570005 CR4:
> 00000000001606e0
>  [ 7522.532917] Call Trace:
>  [ 7522.535647]  bfq_idle_extract+0x52/0xb0
>  [ 7522.539926]  bfq_put_idle_entity+0x12/0x60
>  [ 7522.544494]  bfq_bfqq_served+0xb0/0x190
>  [ 7522.548770]  bfq_dispatch_request+0x2c2/0x1070
>  [ 7522.553727]  blk_mq_do_dispatch_sched+0xa4/0x140
>  [ 7522.558879]  ? newidle_balance+0x1c0/0x390
>  [ 7522.563446]  __blk_mq_sched_dispatch_requests+0x159/0x160
>  [ 7522.569467]  blk_mq_sched_dispatch_requests+0x30/0x60
>  [ 7522.575102]  __blk_mq_run_hw_queue+0x49/0x110
>  [ 7522.579962]  process_one_work+0x1b4/0x370
>  [ 7522.584434]  worker_thread+0x53/0x3e0
>  [ 7522.588517]  ? process_one_work+0x370/0x370
>  [ 7522.593180]  kthread+0x119/0x140
>  [ 7522.596779]  ? __kthread_bind_mask+0x60/0x60
>  [ 7522.601541]  ret_from_fork+0x22/0x30
>  [ 7522.605528] Modules linked in: scsi_transport_iscsi crypto_user
> can_bcm pptp gre l2tp_ip6 l2tp_ip l2tp_core ip6_udp_tunnel udp_tunnel
> rfcomm can_raw hidp bnep nfc af_key mpls_router ip_tunnel
> vsock_loopback vmw_vsock_virtio_transport_common
> vmw_vsock_vmci_transport vsock vmw_vmci kcm ieee802154_socket
> ieee802154 bluetooth ecdh_generic ecc fcrypt pcbc rxrpc pppoe pppox
> smc ib_core atm can mlx4_en mlx4_core n_gsm pps_ldisc slcan
> ppp_synctty n_hdlc mkiss ax25 ppp_async ppp_generic slip slhc nls_utf8
> isofs minix binfmt_misc nfsv3 nfs_acl rds brd exfat vfat fat loop sctp
> tun xt_multiport xt_nat xt_addrtype xt_mark xt_conntrack xt_MASQUERADE
> nft_counter xt_comment nft_compat nft_chain_nat nf_nat nf_conntrack
> nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink overlay fuse
> rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache
> rfkill intel_rapl_msr intel_rapl_common sb_edac x86_pkg_temp_thermal
> intel_powerclamp coretemp iTCO_wdt intel_pmc_bxt iTCO_vendor_support
> sunrpc dcdbas
>  [ 7522.605556]  kvm_intel kvm irqbypass rapl intel_cstate
> intel_uncore pcspkr ipmi_ssif lpc_ich mei_me mei igb dca ipmi_si
> ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables xfs mgag200
> lpfc drm_vram_helper drm_kms_helper cec nvmet_fc drm_ttm_helper nvmet
> ttm crct10dif_pclmul nvme_fc crc32_pclmul crc32c_intel nvme_fabrics
> drm ghash_clmulni_intel i2c_algo_bit nvme_core megaraid_sas
> scsi_transport_fc wmi [last unloaded: dummy]
>  [ 7522.744918] CR2: 0000000000000000
>  [ 7522.748613] ---[ end trace ed34032a61d7e2a6 ]---
> 
>  Thanks & Best Regards,
> 
>  Jianlin Shi
> 


-- 
Jens Axboe


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: panic happened on 5.8.6-rc2-650d8f2
  2020-09-07  2:02   ` Jens Axboe
@ 2020-09-07  7:05     ` Paolo Valente
  2020-09-08 19:13       ` Rachel Sibley
  0 siblings, 1 reply; 4+ messages in thread
From: Paolo Valente @ 2020-09-07  7:05 UTC (permalink / raw)
  To: Jens Axboe; +Cc: Jianlin Shi, linux-block, Rachel Sibley

Hi Jianlin,
given the stack trace and the goal of commit
2de791ab4918969d8108f15238a701968375f235 ("bfq: fix blkio cgroup
leakage v4"), this failure might be related to that commit.  Could you
please try reverting that commit and report back?

Thanks,
Paolo

> Il giorno 7 set 2020, alle ore 04:02, Jens Axboe <axboe@kernel.dk> ha scritto:
> 
> CC Paolo
> 
> 
> On 9/6/20 6:36 PM, Jianlin Shi wrote:
>> Hi,
>> 
>> panic happened when we run jobs on 5.8.6-rc2-650d8f2:
>> https://beaker.engineering.redhat.com/recipes/8756377#task115008997
>> 
>> and the core trace is as follows, have you ever seen this before?
>> 
>> [ 7522.385926] BUG: kernel NULL pointer dereference, address: 0000000000000000
>> [ 7522.393694] #PF: supervisor read access in kernel mode
>> [ 7522.399425] #PF: error_code(0x0000) - not-present page
>> [ 7522.405154] PGD 0 P4D 0
>> [ 7522.407977] Oops: 0000 [#1] SMP PTI
>> [ 7522.411866] CPU: 14 PID: 668 Comm: kworker/14:1H Kdump: loaded
>> Tainted: G             L    5.8.6-rc2-650d8f2.cki #1
>> [ 7522.423510] Hardware name: Dell Inc. PowerEdge R630/0CNCJW, BIOS
>> 1.2.10 03/09/2015
>> [ 7522.431959] Workqueue: kblockd blk_mq_run_work_fn
>> [ 7522.437206] RIP: 0010:__list_del_entry_valid+0x2d/0x4c
>> [ 7522.442936] Code: 4c 8b 47 08 48 b8 00 01 00 00 00 00 ad de 48 39
>> c2 0f 84 71 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c0 0f 84 91
>> 00 00 00 <49> 8b 30 48 39 fe 0f 85 71 00 00 00 48 8b 52 08 48 39 f2 0f
>> 85 56
>> [ 7522.463891] RSP: 0018:ffffa5b9009dfcd8 EFLAGS: 00010017
>> [ 7522.469719] RAX: dead000000000122 RBX: ffff8b458d4c9950 RCX:
>> 0000000000000000
>> [ 7522.477680] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
>> ffff8b448a753938
>> [ 7522.485640] RBP: ffff8b448a753898 R08: 0000000000000000 R09:
>> ffff8b45bb6bb32c
>> [ 7522.493600] R10: 0000000000000018 R11: 0000000000000018 R12:
>> ffff8b448a753810
>> [ 7522.501560] R13: ffff8b44993e2800 R14: 0000000000000000 R15:
>> ffff8b458d07c900
>> [ 7522.509520] FS:  0000000000000000(0000) GS:ffff8b45bfd80000(0000)
>> knlGS:0000000000000000
>> [ 7522.518548] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> [ 7522.524957] CR2: 0000000000000000 CR3: 0000000875570005 CR4:
>> 00000000001606e0
>> [ 7522.532917] Call Trace:
>> [ 7522.535647]  bfq_idle_extract+0x52/0xb0
>> [ 7522.539926]  bfq_put_idle_entity+0x12/0x60
>> [ 7522.544494]  bfq_bfqq_served+0xb0/0x190
>> [ 7522.548770]  bfq_dispatch_request+0x2c2/0x1070
>> [ 7522.553727]  blk_mq_do_dispatch_sched+0xa4/0x140
>> [ 7522.558879]  ? newidle_balance+0x1c0/0x390
>> [ 7522.563446]  __blk_mq_sched_dispatch_requests+0x159/0x160
>> [ 7522.569467]  blk_mq_sched_dispatch_requests+0x30/0x60
>> [ 7522.575102]  __blk_mq_run_hw_queue+0x49/0x110
>> [ 7522.579962]  process_one_work+0x1b4/0x370
>> [ 7522.584434]  worker_thread+0x53/0x3e0
>> [ 7522.588517]  ? process_one_work+0x370/0x370
>> [ 7522.593180]  kthread+0x119/0x140
>> [ 7522.596779]  ? __kthread_bind_mask+0x60/0x60
>> [ 7522.601541]  ret_from_fork+0x22/0x30
>> [ 7522.605528] Modules linked in: scsi_transport_iscsi crypto_user
>> can_bcm pptp gre l2tp_ip6 l2tp_ip l2tp_core ip6_udp_tunnel udp_tunnel
>> rfcomm can_raw hidp bnep nfc af_key mpls_router ip_tunnel
>> vsock_loopback vmw_vsock_virtio_transport_common
>> vmw_vsock_vmci_transport vsock vmw_vmci kcm ieee802154_socket
>> ieee802154 bluetooth ecdh_generic ecc fcrypt pcbc rxrpc pppoe pppox
>> smc ib_core atm can mlx4_en mlx4_core n_gsm pps_ldisc slcan
>> ppp_synctty n_hdlc mkiss ax25 ppp_async ppp_generic slip slhc nls_utf8
>> isofs minix binfmt_misc nfsv3 nfs_acl rds brd exfat vfat fat loop sctp
>> tun xt_multiport xt_nat xt_addrtype xt_mark xt_conntrack xt_MASQUERADE
>> nft_counter xt_comment nft_compat nft_chain_nat nf_nat nf_conntrack
>> nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink overlay fuse
>> rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache
>> rfkill intel_rapl_msr intel_rapl_common sb_edac x86_pkg_temp_thermal
>> intel_powerclamp coretemp iTCO_wdt intel_pmc_bxt iTCO_vendor_support
>> sunrpc dcdbas
>> [ 7522.605556]  kvm_intel kvm irqbypass rapl intel_cstate
>> intel_uncore pcspkr ipmi_ssif lpc_ich mei_me mei igb dca ipmi_si
>> ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables xfs mgag200
>> lpfc drm_vram_helper drm_kms_helper cec nvmet_fc drm_ttm_helper nvmet
>> ttm crct10dif_pclmul nvme_fc crc32_pclmul crc32c_intel nvme_fabrics
>> drm ghash_clmulni_intel i2c_algo_bit nvme_core megaraid_sas
>> scsi_transport_fc wmi [last unloaded: dummy]
>> [ 7522.744918] CR2: 0000000000000000
>> [ 7522.748613] ---[ end trace ed34032a61d7e2a6 ]---
>> 
>> Thanks & Best Regards,
>> 
>> Jianlin Shi
>> 
> 
> 
> -- 
> Jens Axboe
> 


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: panic happened on 5.8.6-rc2-650d8f2
  2020-09-07  7:05     ` Paolo Valente
@ 2020-09-08 19:13       ` Rachel Sibley
  0 siblings, 0 replies; 4+ messages in thread
From: Rachel Sibley @ 2020-09-08 19:13 UTC (permalink / raw)
  To: Paolo Valente, Jens Axboe; +Cc: Jianlin Shi, linux-block



On 9/7/20 3:05 AM, Paolo Valente wrote:
> Hi Jianlin,
> given the stack trace and the goal of commit
> 2de791ab4918969d8108f15238a701968375f235 ("bfq: fix blkio cgroup
> leakage v4"), this failure might be related to that commit.  Could you
> please try reverting that commit and report back?

Hi Paolo/Jianlin,

I cloned the original job and was unable to reproduce the panic, I also don't see it
for any previous or succeeding pipeline for stable tree. I setup a check to automatically
tag the related pipeline in case we're able to reproduce it. We can also work on testing
with the patch reverted, if we see it again we'll follow up in this thread.

Thank you,
Rachel

> 
> Thanks,
> Paolo
> 
>> Il giorno 7 set 2020, alle ore 04:02, Jens Axboe <axboe@kernel.dk> ha scritto:
>>
>> CC Paolo
>>
>>
>> On 9/6/20 6:36 PM, Jianlin Shi wrote:
>>> Hi,
>>>
>>> panic happened when we run jobs on 5.8.6-rc2-650d8f2:
>>> https://beaker.engineering.redhat.com/recipes/8756377#task115008997
>>>
>>> and the core trace is as follows, have you ever seen this before?
>>>
>>> [ 7522.385926] BUG: kernel NULL pointer dereference, address: 0000000000000000
>>> [ 7522.393694] #PF: supervisor read access in kernel mode
>>> [ 7522.399425] #PF: error_code(0x0000) - not-present page
>>> [ 7522.405154] PGD 0 P4D 0
>>> [ 7522.407977] Oops: 0000 [#1] SMP PTI
>>> [ 7522.411866] CPU: 14 PID: 668 Comm: kworker/14:1H Kdump: loaded
>>> Tainted: G             L    5.8.6-rc2-650d8f2.cki #1
>>> [ 7522.423510] Hardware name: Dell Inc. PowerEdge R630/0CNCJW, BIOS
>>> 1.2.10 03/09/2015
>>> [ 7522.431959] Workqueue: kblockd blk_mq_run_work_fn
>>> [ 7522.437206] RIP: 0010:__list_del_entry_valid+0x2d/0x4c
>>> [ 7522.442936] Code: 4c 8b 47 08 48 b8 00 01 00 00 00 00 ad de 48 39
>>> c2 0f 84 71 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c0 0f 84 91
>>> 00 00 00 <49> 8b 30 48 39 fe 0f 85 71 00 00 00 48 8b 52 08 48 39 f2 0f
>>> 85 56
>>> [ 7522.463891] RSP: 0018:ffffa5b9009dfcd8 EFLAGS: 00010017
>>> [ 7522.469719] RAX: dead000000000122 RBX: ffff8b458d4c9950 RCX:
>>> 0000000000000000
>>> [ 7522.477680] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
>>> ffff8b448a753938
>>> [ 7522.485640] RBP: ffff8b448a753898 R08: 0000000000000000 R09:
>>> ffff8b45bb6bb32c
>>> [ 7522.493600] R10: 0000000000000018 R11: 0000000000000018 R12:
>>> ffff8b448a753810
>>> [ 7522.501560] R13: ffff8b44993e2800 R14: 0000000000000000 R15:
>>> ffff8b458d07c900
>>> [ 7522.509520] FS:  0000000000000000(0000) GS:ffff8b45bfd80000(0000)
>>> knlGS:0000000000000000
>>> [ 7522.518548] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> [ 7522.524957] CR2: 0000000000000000 CR3: 0000000875570005 CR4:
>>> 00000000001606e0
>>> [ 7522.532917] Call Trace:
>>> [ 7522.535647]  bfq_idle_extract+0x52/0xb0
>>> [ 7522.539926]  bfq_put_idle_entity+0x12/0x60
>>> [ 7522.544494]  bfq_bfqq_served+0xb0/0x190
>>> [ 7522.548770]  bfq_dispatch_request+0x2c2/0x1070
>>> [ 7522.553727]  blk_mq_do_dispatch_sched+0xa4/0x140
>>> [ 7522.558879]  ? newidle_balance+0x1c0/0x390
>>> [ 7522.563446]  __blk_mq_sched_dispatch_requests+0x159/0x160
>>> [ 7522.569467]  blk_mq_sched_dispatch_requests+0x30/0x60
>>> [ 7522.575102]  __blk_mq_run_hw_queue+0x49/0x110
>>> [ 7522.579962]  process_one_work+0x1b4/0x370
>>> [ 7522.584434]  worker_thread+0x53/0x3e0
>>> [ 7522.588517]  ? process_one_work+0x370/0x370
>>> [ 7522.593180]  kthread+0x119/0x140
>>> [ 7522.596779]  ? __kthread_bind_mask+0x60/0x60
>>> [ 7522.601541]  ret_from_fork+0x22/0x30
>>> [ 7522.605528] Modules linked in: scsi_transport_iscsi crypto_user
>>> can_bcm pptp gre l2tp_ip6 l2tp_ip l2tp_core ip6_udp_tunnel udp_tunnel
>>> rfcomm can_raw hidp bnep nfc af_key mpls_router ip_tunnel
>>> vsock_loopback vmw_vsock_virtio_transport_common
>>> vmw_vsock_vmci_transport vsock vmw_vmci kcm ieee802154_socket
>>> ieee802154 bluetooth ecdh_generic ecc fcrypt pcbc rxrpc pppoe pppox
>>> smc ib_core atm can mlx4_en mlx4_core n_gsm pps_ldisc slcan
>>> ppp_synctty n_hdlc mkiss ax25 ppp_async ppp_generic slip slhc nls_utf8
>>> isofs minix binfmt_misc nfsv3 nfs_acl rds brd exfat vfat fat loop sctp
>>> tun xt_multiport xt_nat xt_addrtype xt_mark xt_conntrack xt_MASQUERADE
>>> nft_counter xt_comment nft_compat nft_chain_nat nf_nat nf_conntrack
>>> nf_defrag_ipv6 nf_defrag_ipv4 nf_tables nfnetlink overlay fuse
>>> rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache
>>> rfkill intel_rapl_msr intel_rapl_common sb_edac x86_pkg_temp_thermal
>>> intel_powerclamp coretemp iTCO_wdt intel_pmc_bxt iTCO_vendor_support
>>> sunrpc dcdbas
>>> [ 7522.605556]  kvm_intel kvm irqbypass rapl intel_cstate
>>> intel_uncore pcspkr ipmi_ssif lpc_ich mei_me mei igb dca ipmi_si
>>> ipmi_devintf ipmi_msghandler acpi_power_meter ip_tables xfs mgag200
>>> lpfc drm_vram_helper drm_kms_helper cec nvmet_fc drm_ttm_helper nvmet
>>> ttm crct10dif_pclmul nvme_fc crc32_pclmul crc32c_intel nvme_fabrics
>>> drm ghash_clmulni_intel i2c_algo_bit nvme_core megaraid_sas
>>> scsi_transport_fc wmi [last unloaded: dummy]
>>> [ 7522.744918] CR2: 0000000000000000
>>> [ 7522.748613] ---[ end trace ed34032a61d7e2a6 ]---
>>>
>>> Thanks & Best Regards,
>>>
>>> Jianlin Shi
>>>
>>
>>
>> -- 
>> Jens Axboe
>>
> 


^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2020-09-08 19:13 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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     [not found] <CABE0yyhP+MSNM4-GJ7hDN+kNMg=LWrg9eze5zFt3S6jCN9P7_Q@mail.gmail.com>
2020-09-07  0:36 ` panic happened on 5.8.6-rc2-650d8f2 Jianlin Shi
2020-09-07  2:02   ` Jens Axboe
2020-09-07  7:05     ` Paolo Valente
2020-09-08 19:13       ` Rachel Sibley

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