I've hit this (or a very similar problem) on 2 different digital ocean
droplets running 20.04 LTS . Unfortunately, what I could see of the
console contained only the end of the panic report, but I've transcribed
it by hand below (I have screenshots if the missing numbers are wanted).
The RIP was exactly the same on both 20.04.4 LTS machines I have but
slightly different than the one posted by the original filer of this
bug:
RIP: 0010:tcp_create_openreq_child+0x2fd/0x410
Here's what I got from the console:
psmouse net_failover failover virtio_blk virtio_scsi floppy
[ 6216.896076] CR2: 0000000000000008
[ 6216.896830] ---[ end trace 13e3ec3bb3cc9e33 ]---
[ 6216.897743] RIP: 0010:tcp_create_openreq_child+0x2fd/0x410
[ 6216.896830] Code: 08 00 00 8b 83 18 01 00 00 48 89 de 4c 89 ef 49 c7 84
24 80
08 00 00 00 00 00 00 41 89 84 24 c4 05 00 00 48 8b 83 f8 00 00 00 <48> 8b
40 08
e8 9a d0 46 00 48 85 c0 41 0f b7 84 24 68 05 00 00 74
[ 6216.902357] RSP: 0018:ffffa6de400b88888 EFLAGS: 00010246
[ 6216.903497] RAX: ...
[ 6216.... ] RDX: ...
[ 6216.... ] RBP: ...
[ 6216.... ] R10: ...
[ 6216.... ] R13: ...
[ 6216.... ] FS: ...
[ 6216.... ] FS: ...
[ 6216.... ] CS: ...
[ 6216.... ] CR2: ...
[ 6216.... ] DR0: ...
[ 6216.... ] DR3: ...
[ 6216.919380] Kernel panic - not syncing: Fatal exception in interrupt
]---
$ uname -sr
Linux 5.4.0-122-generic
Both droplets were using linux-image-virtual, and to avoid this problem,
I reverted to 5.4.0-121 via grub-set-default.
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https://bugs.launchpad.net/bugs/1981658
Title:
BUG: kernel NULL pointer dereference, address: 0000000000000008
Status in linux package in Ubuntu:
Confirmed
Status in linux-hwe-5.4 package in Ubuntu:
Confirmed
Status in linux source package in Bionic:
Confirmed
Status in linux-hwe-5.4 source package in Bionic:
Confirmed
Bug description:
Hi,
On one of the main US Ubuntu Archive servers (banjo), we decided to
reboot into a HWE kernel. The latest being 5.4.0-122 but on doing so,
ran into this kernel panic:
| [ 350.776585] BUG: kernel NULL pointer dereference, address:
0000000000000008
| [ 350.783674] #PF: supervisor read access in kernel mode
| [ 350.788846] #PF: error_code(0x0000) - not-present page
| [ 350.794019] PGD 0 P4D 0
| [ 350.796631] Oops: 0000 [#1] SMP NOPTI
| [ 350.800425] CPU: 8 PID: 0 Comm: swapper/8 Not tainted 5.4.0-122-generic
#138~18.04.1-Ubuntu
| [ 350.808918] Hardware name: HPE ProLiant DL385 Gen10/ProLiant DL385
Gen10, BIOS A40 02/10/2022
| [ 350.817666] RIP: 0010:tcp_create_openreq_child+0x2e1/0x3e0
| [ 350.823187] Code: 08 00 00 41 8b 84 24 18 01 00 00 48 c7 83 80 08 00 00
00 00 00 00 4c 89 e6 4c 89 ef 89 83 c4 05 00 00 49 8b 84 24 f8 00 00 00 <48> 8b
40 08 e8 96 28 42 00 48 85 c0 0f b7 83 68 05 00 00 74 0a 83
| [ 350.842068] RSP: 0018:ffff9a958cce8858 EFLAGS: 00010246
| [ 350.847324] RAX: 0000000000000000 RBX: ffff897618739c80 RCX:
0000000000000007
| [ 350.854502] RDX: 0000000000000020 RSI: ffff897607afb0b0 RDI:
ffff897605c85580
| [ 350.861682] RBP: ffff9a958cce8878 R08: 0000000000000178 R09:
ffff89763e407800
| [ 350.868859] R10: 00000000000004c4 R11: ffff9a958cce89c7 R12:
ffff897607afb0b0
| [ 350.876039] R13: ffff897605c85580 R14: ffff8976205fbe00 R15:
ffff89762688b400
| [ 350.883219] FS: 0000000000000000(0000) GS:ffff89763ec00000(0000)
knlGS:0000000000000000
| [ 350.891358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
| [ 350.897138] CR2: 0000000000000008 CR3: 0000001fd7914000 CR4:
0000000000340ee0
| [ 350.904319] Call Trace:
| [ 350.906787] <IRQ>
| [ 350.908824] tcp_v6_syn_recv_sock+0x8d/0x710
| [ 350.913259] ? ip6_route_output_flags_noref+0xd0/0x110
| [ 350.918435] tcp_get_cookie_sock+0x48/0x140
| [ 350.922688] cookie_v6_check+0x5a2/0x700
| [ 350.926714] tcp_v6_do_rcv+0x36c/0x3e0
| [ 350.930589] ? tcp_v6_do_rcv+0x36c/0x3e0
| [ 350.934589] tcp_v6_rcv+0xa16/0xa60
| [ 350.938102] ip6_protocol_deliver_rcu+0xd8/0x4d0
| [ 350.942750] ip6_input+0x41/0xb0
| [ 350.946000] ip6_sublist_rcv_finish+0x42/0x60
| [ 350.950385] ip6_sublist_rcv+0x235/0x260
| [ 350.954333] ? __netif_receive_skb_core+0x19d/0xc60
| [ 350.959245] ipv6_list_rcv+0x110/0x140
| [ 350.963018] __netif_receive_skb_list_core+0x157/0x260
| [ 350.968192] ? build_skb+0x17/0x80
| [ 350.971615] netif_receive_skb_list_internal+0x187/0x2a0
| [ 350.976961] gro_normal_list.part.131+0x1e/0x40
| [ 350.981519] napi_complete_done+0x94/0x120
| [ 350.985700] mlx5e_napi_poll+0x178/0x630 [mlx5_core]
| [ 350.990697] net_rx_action+0x140/0x3e0
| [ 350.994475] __do_softirq+0xe4/0x2da
| [ 350.998079] irq_exit+0xae/0xb0
| [ 351.001239] do_IRQ+0x59/0xe0
| [ 351.004228] common_interrupt+0xf/0xf
| [ 351.007913] </IRQ>
| [ 351.010029] RIP: 0010:cpuidle_enter_state+0xbc/0x440
| [ 351.015023] Code: ff e8 b8 ca 80 ff 80 7d d3 00 74 17 9c 58 0f 1f 44 00
00 f6 c4 02 0f 85 54 03 00 00 31 ff e8 4b 4f 87 ff fb 66 0f 1f 44 00 00 <45> 85
ed 0f 88 1a 03 00 00 4c 2b 7d c8 48 ba cf f7 53 e3 a5 9b c4
| [ 351.033952] RSP: 0018:ffff9a958026fe48 EFLAGS: 00000246 ORIG_RAX:
ffffffffffffffd6
| [ 351.041633] RAX: ffff89763ec2fe00 RBX: ffffffff84b66b40 RCX:
000000000000001f
| [ 351.048816] RDX: 00000051abe96150 RSI: 000000002abf3234 RDI:
0000000000000000
| [ 351.055997] RBP: ffff9a958026fe88 R08: 0000000000000002 R09:
000000000002f680
| [ 351.063176] R10: ffff9a958026fe18 R11: 0000000000000115 R12:
ffff8976274c3800
| [ 351.070355] R13: 0000000000000001 R14: ffffffff84b66bb8 R15:
00000051abe96150
| [ 351.077540] ? cpuidle_enter_state+0x98/0x440
| [ 351.081930] ? menu_select+0x377/0x600
| [ 351.085706] cpuidle_enter+0x2e/0x40
| [ 351.089310] call_cpuidle+0x23/0x40
| [ 351.092821] do_idle+0x1f6/0x270
| [ 351.096069] cpu_startup_entry+0x1d/0x20
| [ 351.100024] start_secondary+0x166/0x1c0
| [ 351.103977] secondary_startup_64+0xa4/0xb0
| [ 351.108186] Modules linked in: binfmt_misc bonding nls_iso8859_1
ipmi_ssif edac_mce_amd kvm_amd kvm hpilo ccp ipmi_si ipmi_devintf
ipmi_msghandler acpi_tad k10temp mac_hid acpi_power_meter sch_fq tcp_bbr
ib_iser rdma_cm iw_cm ib_cm iscsi_tcp libiscsi_tcp libiscsi
scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10
raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq
libcrc32c raid0 multipath linear mlx5_ib raid1 ses enclosure ib_uverbs ib_core
mgag200 drm_vram_helper ttm drm_kms_helper syscopyarea crct10dif_pclmul
sysfillrect mlx5_core crc32_pclmul sysimgblt smartpqi fb_sys_fops uas
ghash_clmulni_intel aesni_intel crypto_simd igb pci_hyperv_intf cryptd
glue_helper usb_storage dca tls drm i2c_algo_bit scsi_transport_sas mlxfw nvme
i2c_piix4 nvme_core wmi
| [ 351.180156] CR2: 0000000000000008
| [ 351.183629] ---[ end trace 23210cdf0c6d5851 ]---
| [ 351.322276] RIP: 0010:tcp_create_openreq_child+0x2e1/0x3e0
| [ 351.327974] Code: 08 00 00 41 8b 84 24 18 01 00 00 48 c7 83 80 08 00 00
00 00 00 00 4c 89 e6 4c 89 ef 89 83 c4 05 00 00 49 8b 84 24 f8 00 00 00 <48> 8b
40 08 e8 96 28 42 00 48 85 c0 0f b7 83 68 05 00 00 74 0a 83
| [ 351.346878] RSP: 0018:ffff9a958cce8858 EFLAGS: 00010246
| [ 351.352166] RAX: 0000000000000000 RBX: ffff897618739c80 RCX:
0000000000000007
| [ 351.359348] RDX: 0000000000000020 RSI: ffff897607afb0b0 RDI:
ffff897605c85580
| [ 351.366526] RBP: ffff9a958cce8878 R08: 0000000000000178 R09:
ffff89763e407800
| [ 351.373705] R10: 00000000000004c4 R11: ffff9a958cce89c7 R12:
ffff897607afb0b0
| [ 351.380886] R13: ffff897605c85580 R14: ffff8976205fbe00 R15:
ffff89762688b400
| [ 351.388065] FS: 0000000000000000(0000) GS:ffff89763ec00000(0000)
knlGS:0000000000000000
| [ 351.396203] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
| [ 351.401982] CR2: 0000000000000008 CR3: 0000001fd7914000 CR4:
0000000000340ee0
| [ 351.409162] Kernel panic - not syncing: Fatal exception in interrupt
| [ 351.415613] Kernel Offset: 0x2000000 from 0xffffffff81000000 (relocation
range: 0xffffffff80000000-0xffffffffbfffffff)
| [ 351.437793] ---[ end Kernel panic - not syncing: Fatal exception in
interrupt ]---
Per ~IS-Outage on Mattermost, tried various other older kernels and it
seems -121 is working fine so looks to be introduced in -122.
| [hloeung@banjo ~]$ lsb_release -a
| No LSB modules are available.
| Distributor ID: Ubuntu
| Description: Ubuntu 18.04.6 LTS
| Release: 18.04
| Codename: bionic
---
ProblemType: Bug
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jul 14 03:13 seq
crw-rw---- 1 root audio 116, 33 Jul 14 03:13 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.9-0ubuntu7.28
Architecture: amd64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord':
'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
DistroRelease: Ubuntu 18.04
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
MachineType: HPE ProLiant DL385 Gen10
Package: linux-hwe-5.4
PciMultimedia:
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.utf8
SHELL=/bin/bash
ProcFB: 0 mgag200drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-121-generic
root=UUID=a5a2675d-dc52-48f0-9273-2c6dadac446f ro console=ttyS0,115200 nosplash
ProcVersionSignature: Ubuntu 5.4.0-121.137~18.04.1-generic 5.4.189
RelatedPackageVersions:
linux-restricted-modules-5.4.0-121-generic N/A
linux-backports-modules-5.4.0-121-generic N/A
linux-firmware 1.173.21
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
Tags: bionic
Uname: Linux 5.4.0-121-generic x86_64
UpgradeStatus: Upgraded to bionic on 2019-12-16 (940 days ago)
UserGroups: adm
_MarkForUpload: True
dmi.bios.date: 02/10/2022
dmi.bios.vendor: HPE
dmi.bios.version: A40
dmi.board.name: ProLiant DL385 Gen10
dmi.board.vendor: HPE
dmi.chassis.type: 23
dmi.chassis.vendor: HPE
dmi.modalias:
dmi:bvnHPE:bvrA40:bd02/10/2022:svnHPE:pnProLiantDL385Gen10:pvr:rvnHPE:rnProLiantDL385Gen10:rvr:cvnHPE:ct23:cvr:
dmi.product.family: ProLiant
dmi.product.name: ProLiant DL385 Gen10
dmi.product.sku: 878615-B21
dmi.sys.vendor: HPE
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