netdev - xsk_buff_pool.c trace

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Date:   Sun, 09 May 2021 21:58:24 -0400
From:   Dan Siemon <dan@...erfire.com>
To:     netdev@...r.kernel.org
Cc:     bjorn@...nel.org, magnus.karlsson@...el.com
Subject: xsk_buff_pool.c trace

i40e NIC with 5.11.17-300.fc34.x86_64

Unfortunately, this does not consistently occur.

[ 2739.991807] ------------[ cut here ]------------
[ 2739.996428] Failed to disable zero-copy!
[ 2740.000378] WARNING: CPU: 0 PID: 302 at net/xdp/xsk_buff_pool.c:118
xp_disable_drv_zc+0x69/0xa0
[ 2740.009075] Modules linked in: rfkill vfat fat rpcrdma sunrpc
rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser
libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm intel_rapl_msr
iTCO_wdt intel_pmc_bxt iTCO_vendor_support intel_rapl_common
isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm irqbypass i40iw rapl
intel_cstate ib_uverbs intel_uncore ipmi_ssif ib_core pcspkr i2c_i801
lpc_ich i2c_smbus joydev mei_me mei acpi_ipmi ioatdma ipmi_si
ipmi_devintf ipmi_msghandler fuse zram ip_tables xfs ast
drm_vram_helper drm_kms_helper crct10dif_pclmul crc32_pclmul qat_c62x
cec drm_ttm_helper crc32c_intel intel_qat ttm ghash_clmulni_intel i40e
drm igb authenc dca i2c_algo_bit wmi uas usb_storage i2c_dev
[ 2740.075995] CPU: 0 PID: 302 Comm: kworker/0:2 Not tainted 5.11.17-
300.fc34.x86_64 #1
[ 2740.083734] Hardware name: To be filled by O.E.M. To be filled by
O.E.M./To be filled by O.E.M., BIOS 5.14 04/18/2019
[ 2740.094334] Workqueue: events xp_release_deferred
[ 2740.099039] RIP: 0010:xp_disable_drv_zc+0x69/0xa0
[ 2740.103744] Code: 10 48 8b 87 f0 01 00 00 48 8b 80 50 02 00 00 e8 cd
26 2b 00 85 c0 75 06 48 83 c4 20 5b c3 48 c7 c7 70 10 49 95 e8 36 db 01
00 <0f> 0b 48 83 c4 20 5b c3 80 3d 29 eb 1b 01 00 75 9c ba 6c 00 00 00
[ 2740.122494] RSP: 0018:ffffa93580c9be48 EFLAGS: 00010296
[ 2740.127717] RAX: 000000000000001c RBX: ffffa9358f309000 RCX:
0000000000000000
[ 2740.134851] RDX: ffff8be5e0626ba0 RSI: ffff8be5e0618ac0 RDI:
ffff8be5e0618ac0
[ 2740.141985] RBP: ffffa9358f309000 R08: 0000000000000000 R09:
ffffa93580c9bc78
[ 2740.149117] R10: ffffa93580c9bc70 R11: ffff8be63ff3c228 R12:
ffff8be5e0629980
[ 2740.156251] R13: ffff8be5e062f700 R14: 0000000000000000 R15:
0000000000000000
[ 2740.163382] FS:  0000000000000000(0000) GS:ffff8be5e0600000(0000)
knlGS:0000000000000000
[ 2740.171468] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2740.177217] CR2: 00007f42c932d224 CR3: 0000000409a10003 CR4:
00000000007706f0
[ 2740.184349] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2740.191481] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 2740.198617] PKRU: 55555554
[ 2740.201328] Call Trace:
[ 2740.203786]  ? mutex_lock+0xe/0x30
[ 2740.207198]  xp_release_deferred+0x22/0xa0
[ 2740.211296]  process_one_work+0x1ec/0x380
[ 2740.215309]  worker_thread+0x53/0x3e0
[ 2740.218975]  ? process_one_work+0x380/0x380
[ 2740.223161]  kthread+0x11b/0x140
[ 2740.226392]  ? kthread_associate_blkcg+0xa0/0xa0
[ 2740.231015]  ret_from_fork+0x1f/0x30
[ 2740.234604] ---[ end trace cbb7bcf4ac8a3b92 ]---
[ 2740.336808] ------------[ cut here ]------------
[ 2740.341429] Failed to disable zero-copy!
[ 2740.345384] WARNING: CPU: 3 PID: 316 at net/xdp/xsk_buff_pool.c:118
xp_disable_drv_zc+0x69/0xa0
[ 2740.354086] Modules linked in: rfkill vfat fat rpcrdma sunrpc
rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser
libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm intel_rapl_msr
iTCO_wdt intel_pmc_bxt iTCO_vendor_support intel_rapl_common
isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm irqbypass i40iw rapl
intel_cstate ib_uverbs intel_uncore ipmi_ssif ib_core pcspkr i2c_i801
lpc_ich i2c_smbus joydev mei_me mei acpi_ipmi ioatdma ipmi_si
ipmi_devintf ipmi_msghandler fuse zram ip_tables xfs ast
drm_vram_helper drm_kms_helper crct10dif_pclmul crc32_pclmul qat_c62x
cec drm_ttm_helper crc32c_intel intel_qat ttm ghash_clmulni_intel i40e
drm igb authenc dca i2c_algo_bit wmi uas usb_storage i2c_dev
[ 2740.420997] CPU: 3 PID: 316 Comm: kworker/3:1 Tainted: G        W  
5.11.17-300.fc34.x86_64 #1
[ 2740.430133] Hardware name: To be filled by O.E.M. To be filled by
O.E.M./To be filled by O.E.M., BIOS 5.14 04/18/2019
[ 2740.440730] Workqueue: events xp_release_deferred
[ 2740.445447] RIP: 0010:xp_disable_drv_zc+0x69/0xa0
[ 2740.450150] Code: 10 48 8b 87 f0 01 00 00 48 8b 80 50 02 00 00 e8 cd
26 2b 00 85 c0 75 06 48 83 c4 20 5b c3 48 c7 c7 70 10 49 95 e8 36 db 01
00 <0f> 0b 48 83 c4 20 5b c3 80 3d 29 eb 1b 01 00 75 9c ba 6c 00 00 00
[ 2740.468900] RSP: 0018:ffffa93580d0be48 EFLAGS: 00010296
[ 2740.474124] RAX: 000000000000001c RBX: ffffa93586ff2000 RCX:
0000000000000000
[ 2740.481258] RDX: ffff8be5e06e6ba0 RSI: ffff8be5e06d8ac0 RDI:
ffff8be5e06d8ac0
[ 2740.488392] RBP: ffffa93586ff2000 R08: 0000000000000000 R09:
ffffa93580d0bc78
[ 2740.495523] R10: ffffa93580d0bc70 R11: ffff8be63ff3c228 R12:
ffff8be5e06e9980
[ 2740.502657] R13: ffff8be5e06ef700 R14: 0000000000000000 R15:
0000000000000000
[ 2740.509792] FS:  0000000000000000(0000) GS:ffff8be5e06c0000(0000)
knlGS:0000000000000000
[ 2740.517877] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2740.523622] CR2: 000056209994d798 CR3: 000000028ee14004 CR4:
00000000007706e0
[ 2740.530757] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2740.537889] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 2740.545022] PKRU: 55555554
[ 2740.547736] Call Trace:
[ 2740.550190]  xp_release_deferred+0x22/0xa0
[ 2740.554298]  process_one_work+0x1ec/0x380
[ 2740.558321]  worker_thread+0x53/0x3e0
[ 2740.561993]  ? process_one_work+0x380/0x380
[ 2740.566177]  kthread+0x11b/0x140
[ 2740.569414]  ? kthread_associate_blkcg+0xa0/0xa0
[ 2740.574031]  ret_from_fork+0x1f/0x30
[ 2740.577623] ---[ end trace cbb7bcf4ac8a3b93 ]---
[ 2740.679825] ------------[ cut here ]------------
[ 2740.684440] Failed to disable zero-copy!
[ 2740.688392] WARNING: CPU: 2 PID: 387 at net/xdp/xsk_buff_pool.c:118
xp_disable_drv_zc+0x69/0xa0
[ 2740.697087] Modules linked in: rfkill vfat fat rpcrdma sunrpc
rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser
libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm intel_rapl_msr
iTCO_wdt intel_pmc_bxt iTCO_vendor_support intel_rapl_common
isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm irqbypass i40iw rapl
intel_cstate ib_uverbs intel_uncore ipmi_ssif ib_core pcspkr i2c_i801
lpc_ich i2c_smbus joydev mei_me mei acpi_ipmi ioatdma ipmi_si
ipmi_devintf ipmi_msghandler fuse zram ip_tables xfs ast
drm_vram_helper drm_kms_helper crct10dif_pclmul crc32_pclmul qat_c62x
cec drm_ttm_helper crc32c_intel intel_qat ttm ghash_clmulni_intel i40e
drm igb authenc dca i2c_algo_bit wmi uas usb_storage i2c_dev
[ 2740.763999] CPU: 2 PID: 387 Comm: kworker/2:1 Tainted: G        W  
5.11.17-300.fc34.x86_64 #1
[ 2740.773123] Hardware name: To be filled by O.E.M. To be filled by
O.E.M./To be filled by O.E.M., BIOS 5.14 04/18/2019
[ 2740.783722] Workqueue: events xp_release_deferred
[ 2740.788431] RIP: 0010:xp_disable_drv_zc+0x69/0xa0
[ 2740.793135] Code: 10 48 8b 87 f0 01 00 00 48 8b 80 50 02 00 00 e8 cd
26 2b 00 85 c0 75 06 48 83 c4 20 5b c3 48 c7 c7 70 10 49 95 e8 36 db 01
00 <0f> 0b 48 83 c4 20 5b c3 80 3d 29 eb 1b 01 00 75 9c ba 6c 00 00 00
[ 2740.811883] RSP: 0018:ffffa935843ebe48 EFLAGS: 00010296
[ 2740.817110] RAX: 000000000000001c RBX: ffffa9358eb05000 RCX:
0000000000000000
[ 2740.824242] RDX: ffff8be5e06a6ba0 RSI: ffff8be5e0698ac0 RDI:
ffff8be5e0698ac0
[ 2740.831375] RBP: ffffa9358eb05000 R08: 0000000000000000 R09:
ffffa935843ebc78
[ 2740.838509] R10: ffffa935843ebc70 R11: ffff8be63ff3c228 R12:
ffff8be5e06a9980
[ 2740.845643] R13: ffff8be5e06af700 R14: 0000000000000000 R15:
0000000000000000
[ 2740.852776] FS:  0000000000000000(0000) GS:ffff8be5e0680000(0000)
knlGS:0000000000000000
[ 2740.860861] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2740.866609] CR2: 00007f580c1a0ae0 CR3: 000000028ec8c002 CR4:
00000000007706e0
[ 2740.873741] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2740.880875] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 2740.888006] PKRU: 55555554
[ 2740.890719] Call Trace:
[ 2740.893173]  xp_release_deferred+0x22/0xa0
[ 2740.897274]  process_one_work+0x1ec/0x380
[ 2740.901294]  worker_thread+0x53/0x3e0
[ 2740.904959]  ? process_one_work+0x380/0x380
[ 2740.909144]  kthread+0x11b/0x140
[ 2740.912378]  ? kthread_associate_blkcg+0xa0/0xa0
[ 2740.916999]  ret_from_fork+0x1f/0x30
[ 2740.920578] ---[ end trace cbb7bcf4ac8a3b94 ]---
[ 2740.925513] i40e 0000:17:00.1: VSI seid 391 Rx ring 72 disable
timeout
[ 2740.945857] ------------[ cut here ]------------
[ 2740.950479] Failed to disable zero-copy!
[ 2740.954431] WARNING: CPU: 2 PID: 783 at net/xdp/xsk_buff_pool.c:118
xp_disable_drv_zc+0x69/0xa0
[ 2740.963126] Modules linked in: rfkill vfat fat rpcrdma sunrpc
rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser
libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm intel_rapl_msr
iTCO_wdt intel_pmc_bxt iTCO_vendor_support intel_rapl_common
isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm irqbypass i40iw rapl
intel_cstate ib_uverbs intel_uncore ipmi_ssif ib_core pcspkr i2c_i801
lpc_ich i2c_smbus joydev mei_me mei acpi_ipmi ioatdma ipmi_si
ipmi_devintf ipmi_msghandler fuse zram ip_tables xfs ast
drm_vram_helper drm_kms_helper crct10dif_pclmul crc32_pclmul qat_c62x
cec drm_ttm_helper crc32c_intel intel_qat ttm ghash_clmulni_intel i40e
drm igb authenc dca i2c_algo_bit wmi uas usb_storage i2c_dev
[ 2741.030038] CPU: 2 PID: 783 Comm: kworker/2:2 Tainted: G        W  
5.11.17-300.fc34.x86_64 #1
[ 2741.039170] Hardware name: To be filled by O.E.M. To be filled by
O.E.M./To be filled by O.E.M., BIOS 5.14 04/18/2019
[ 2741.049769] Workqueue: events xp_release_deferred
[ 2741.054475] RIP: 0010:xp_disable_drv_zc+0x69/0xa0
[ 2741.059181] Code: 10 48 8b 87 f0 01 00 00 48 8b 80 50 02 00 00 e8 cd
26 2b 00 85 c0 75 06 48 83 c4 20 5b c3 48 c7 c7 70 10 49 95 e8 36 db 01
00 <0f> 0b 48 83 c4 20 5b c3 80 3d 29 eb 1b 01 00 75 9c ba 6c 00 00 00
[ 2741.077929] RSP: 0018:ffffa93580f37e48 EFLAGS: 00010296
[ 2741.083156] RAX: 000000000000001c RBX: ffffa9358f70b000 RCX:
0000000000000000
[ 2741.090287] RDX: ffff8be5e06a6ba0 RSI: ffff8be5e0698ac0 RDI:
ffff8be5e0698ac0
[ 2741.097424] RBP: ffffa9358f70b000 R08: 0000000000000000 R09:
ffffa93580f37c78
[ 2741.104555] R10: ffffa93580f37c70 R11: ffff8be63ff3c228 R12:
ffff8be5e06a9980
[ 2741.111687] R13: ffff8be5e06af700 R14: 0000000000000000 R15:
0000000000000000
[ 2741.118822] FS:  0000000000000000(0000) GS:ffff8be5e0680000(0000)
knlGS:0000000000000000
[ 2741.126909] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2741.132655] CR2: 00007f580c1a0ae0 CR3: 000000028ec8c002 CR4:
00000000007706e0
[ 2741.139787] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2741.146921] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 2741.154053] PKRU: 55555554
[ 2741.156764] Call Trace:
[ 2741.159219]  xp_release_deferred+0x22/0xa0
[ 2741.163320]  process_one_work+0x1ec/0x380
[ 2741.167330]  worker_thread+0x53/0x3e0
[ 2741.170996]  ? process_one_work+0x380/0x380
[ 2741.175184]  kthread+0x11b/0x140
[ 2741.178415]  ? kthread_associate_blkcg+0xa0/0xa0
[ 2741.183036]  ret_from_fork+0x1f/0x30
[ 2741.186617] ---[ end trace cbb7bcf4ac8a3b95 ]---
[ 2741.294857] ------------[ cut here ]------------
[ 2741.299477] Failed to disable zero-copy!
[ 2741.303428] WARNING: CPU: 2 PID: 5711 at net/xdp/xsk_buff_pool.c:118
xp_disable_drv_zc+0x69/0xa0
[ 2741.312210] Modules linked in: rfkill vfat fat rpcrdma sunrpc
rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser
libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm intel_rapl_msr
iTCO_wdt intel_pmc_bxt iTCO_vendor_support intel_rapl_common
isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm irqbypass i40iw rapl
intel_cstate ib_uverbs intel_uncore ipmi_ssif ib_core pcspkr i2c_i801
lpc_ich i2c_smbus joydev mei_me mei acpi_ipmi ioatdma ipmi_si
ipmi_devintf ipmi_msghandler fuse zram ip_tables xfs ast
drm_vram_helper drm_kms_helper crct10dif_pclmul crc32_pclmul qat_c62x
cec drm_ttm_helper crc32c_intel intel_qat ttm ghash_clmulni_intel i40e
drm igb authenc dca i2c_algo_bit wmi uas usb_storage i2c_dev
[ 2741.379125] CPU: 2 PID: 5711 Comm: kworker/2:0 Tainted: G        W 
5.11.17-300.fc34.x86_64 #1
[ 2741.388341] Hardware name: To be filled by O.E.M. To be filled by
O.E.M./To be filled by O.E.M., BIOS 5.14 04/18/2019
[ 2741.398943] Workqueue: events xp_release_deferred
[ 2741.403649] RIP: 0010:xp_disable_drv_zc+0x69/0xa0
[ 2741.408354] Code: 10 48 8b 87 f0 01 00 00 48 8b 80 50 02 00 00 e8 cd
26 2b 00 85 c0 75 06 48 83 c4 20 5b c3 48 c7 c7 70 10 49 95 e8 36 db 01
00 <0f> 0b 48 83 c4 20 5b c3 80 3d 29 eb 1b 01 00 75 9c ba 6c 00 00 00
[ 2741.427100] RSP: 0018:ffffa9372f13fe48 EFLAGS: 00010296
[ 2741.432328] RAX: 000000000000001c RBX: ffffa9358ef07000 RCX:
0000000000000000
[ 2741.439460] RDX: ffff8be5e06a6ba0 RSI: ffff8be5e0698ac0 RDI:
ffff8be5e0698ac0
[ 2741.446594] RBP: ffffa9358ef07000 R08: 0000000000000000 R09:
ffffa9372f13fc78
[ 2741.453727] R10: ffffa9372f13fc70 R11: ffff8be63ff3c228 R12:
ffff8be5e06a9980
[ 2741.460858] R13: ffff8be5e06af700 R14: 0000000000000000 R15:
0000000000000000
[ 2741.467994] FS:  0000000000000000(0000) GS:ffff8be5e0680000(0000)
knlGS:0000000000000000
[ 2741.476080] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2741.481824] CR2: 00007f580c1a0ae0 CR3: 000000028ec8c002 CR4:
00000000007706e0
[ 2741.488959] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2741.496092] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 2741.503224] PKRU: 55555554
[ 2741.505936] Call Trace:
[ 2741.508391]  xp_release_deferred+0x22/0xa0
[ 2741.512491]  process_one_work+0x1ec/0x380
[ 2741.516505]  worker_thread+0x53/0x3e0
[ 2741.520170]  ? process_one_work+0x380/0x380
[ 2741.524354]  kthread+0x11b/0x140
[ 2741.527587]  ? kthread_associate_blkcg+0xa0/0xa0
[ 2741.532206]  ret_from_fork+0x1f/0x30
[ 2741.535789] ---[ end trace cbb7bcf4ac8a3b96 ]---
[ 2741.637874] ------------[ cut here ]------------
[ 2741.642495] Failed to disable zero-copy!
[ 2741.646450] WARNING: CPU: 3 PID: 3925 at net/xdp/xsk_buff_pool.c:118
xp_disable_drv_zc+0x69/0xa0
[ 2741.655239] Modules linked in: rfkill vfat fat rpcrdma sunrpc
rdma_ucm ib_srpt ib_isert iscsi_target_mod target_core_mod ib_iser
libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm intel_rapl_msr
iTCO_wdt intel_pmc_bxt iTCO_vendor_support intel_rapl_common
isst_if_common skx_edac nfit libnvdimm x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm irqbypass i40iw rapl
intel_cstate ib_uverbs intel_uncore ipmi_ssif ib_core pcspkr i2c_i801
lpc_ich i2c_smbus joydev mei_me mei acpi_ipmi ioatdma ipmi_si
ipmi_devintf ipmi_msghandler fuse zram ip_tables xfs ast
drm_vram_helper drm_kms_helper crct10dif_pclmul crc32_pclmul qat_c62x
cec drm_ttm_helper crc32c_intel intel_qat ttm ghash_clmulni_intel i40e
drm igb authenc dca i2c_algo_bit wmi uas usb_storage i2c_dev
[ 2741.722150] CPU: 3 PID: 3925 Comm: kworker/3:0 Tainted: G        W 
5.11.17-300.fc34.x86_64 #1
[ 2741.731371] Hardware name: To be filled by O.E.M. To be filled by
O.E.M./To be filled by O.E.M., BIOS 5.14 04/18/2019
[ 2741.741968] Workqueue: events xp_release_deferred
[ 2741.746676] RIP: 0010:xp_disable_drv_zc+0x69/0xa0
[ 2741.751380] Code: 10 48 8b 87 f0 01 00 00 48 8b 80 50 02 00 00 e8 cd
26 2b 00 85 c0 75 06 48 83 c4 20 5b c3 48 c7 c7 70 10 49 95 e8 36 db 01
00 <0f> 0b 48 83 c4 20 5b c3 80 3d 29 eb 1b 01 00 75 9c ba 6c 00 00 00
[ 2741.770130] RSP: 0018:ffffa93580f9fe48 EFLAGS: 00010296
[ 2741.775354] RAX: 000000000000001c RBX: ffffa9358af02000 RCX:
0000000000000000
[ 2741.782487] RDX: ffff8be5e06e6ba0 RSI: ffff8be5e06d8ac0 RDI:
ffff8be5e06d8ac0
[ 2741.789624] RBP: ffffa9358af02000 R08: 0000000000000000 R09:
ffffa93580f9fc78
[ 2741.796763] R10: ffffa93580f9fc70 R11: ffff8be63ff3c228 R12:
ffff8be5e06e9980
[ 2741.803895] R13: ffff8be5e06ef700 R14: 0000000000000000 R15:
0000000000000000
[ 2741.811030] FS:  0000000000000000(0000) GS:ffff8be5e06c0000(0000)
knlGS:0000000000000000
[ 2741.819116] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2741.824861] CR2: 00007fc9a42684e0 CR3: 00000002ccdf4001 CR4:
00000000007706e0
[ 2741.831994] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 2741.839127] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 2741.846259] PKRU: 55555554
[ 2741.848973] Call Trace:
[ 2741.851428]  xp_release_deferred+0x22/0xa0
[ 2741.855539]  process_one_work+0x1ec/0x380
[ 2741.859557]  worker_thread+0x53/0x3e0
[ 2741.863221]  ? process_one_work+0x380/0x380
[ 2741.867410]  kthread+0x11b/0x140
[ 2741.870651]  ? kthread_associate_blkcg+0xa0/0xa0
[ 2741.875271]  ret_from_fork+0x1f/0x30
[ 2741.878861] ---[ end trace cbb7bcf4ac8a3b97 ]---