Seems to be fixed in the 1012 build. If you encounter this issue again,
please re-open the ticket and I will pick back up the investigation.
** Changed in: linux-signed-aws (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2076062
Title:
6.8.0-1010-aws repeating UG: kernel NULL pointer dereference, address:
00000000000000a0
Status in linux-signed-aws package in Ubuntu:
Invalid
Bug description:
We have a repeating (every few hours) kernel OOPS:
BUG: kernel NULL pointer dereference, address: 00000000000000a0.
This repeats on several different hardwares so this is not a hardware
issue.
Attached as a file are 5 dmesg logs and kdump reports.
[ 6315.768576] [ T52862] #PF: supervisor read access in kernel mode
[ 6315.770893] [ T52862] #PF: error_code(0x0000) - not-present page
[ 6315.773266] [ T52862] PGD 0 P4D 0
[ 6315.774528] [ T52862] Oops: 0000 [#1] SMP NOPTI
[ 6315.776262] [ T52862] CPU: 399 PID: 52862 Comm: python Kdump: loaded
Tainted: P O 6.8.0-1010-aws #10-Ubuntu
[ 6315.780647] [ T52862] Hardware name: Amazon EC2 u-12tb1.112xlarge/, BIOS
1.0 10/16/2017
[ 6315.783698] [ T52862] RIP: 0010:pick_next_task_fair+0x91/0x620
[ 6315.785810] [ T52862] Code: 91 00 00 00 49 81 bd b0 02 00 00 00 3b 6f 91
75 60 4d 89 fe eb 27 4c 89 f7 e8 5b b3 ff ff 84 c0 75 3f 4c 89 f7 e8 8f fb fe
ff <4c> 8b b0 a0 00 00 00 48 89 c3 4d 85 f6 0f 8>
[ 6315.793288] [ T52862] RSP: 0018:ffffbcf57feafb20 EFLAGS: 00010046
[ 6315.795539] [ T52862] RAX: 0000000000000000 RBX: ffffbcf57feafbf0 RCX:
0000000000000000
[ 6315.798481] [ T52862] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
0000000000000000
[ 6315.801402] [ T52862] RBP: ffffbcf57feafb60 R08: 0000000000000000 R09:
0000000000000000
[ 6315.804358] [ T52862] R10: 0000000000000000 R11: 0000000000000000 R12:
ffffa64bb27b47c0
[ 6315.807298] [ T52862] R13: ffff9ed3e4a88000 R14: ffffa64bb27b48c0 R15:
ffffa64bb27b48c0
[ 6315.810210] [ T52862] FS: 00007635af6006c0(0000)
GS:ffffa64bb2780000(0000) knlGS:0000000000000000
[ 6315.813512] [ T52862] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6315.817797] [ T52862] CR2: 00000000000000a0 CR3: 000003029b5dc002 CR4:
00000000007706f0
[ 6315.822588] [ T52862] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 6315.827353] [ T52862] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 6315.832121] [ T52862] PKRU: 55555554
[ 6315.835228] [ T52862] Call Trace:
[ 6315.838210] [ T52862] <TASK>
[ 6315.841100] [ T52862] ? show_regs+0x6d/0x80
[ 6315.844493] [ T52862] ? __die+0x24/0x80
[ 6315.847706] [ T52862] ? page_fault_oops+0x99/0x1b0
[ 6315.851278] [ T52862] ? do_user_addr_fault+0x2d8/0x6a0
[ 6315.855048] [ T52862] ? exc_page_fault+0x83/0x190
[ 6315.858600] [ T52862] ? asm_exc_page_fault+0x27/0x30
[ 6315.862258] [ T52862] ? pick_next_task_fair+0x91/0x620
[ 6315.865961] [ T52862] pick_next_task+0x5f/0xce0
[ 6315.869496] [ T52862] __schedule+0x16e/0x790
[ 6315.872845] [ T52862] ? os_xsave+0x2e/0x70
[ 6315.876108] [ T52862] schedule+0x2c/0xf0
[ 6315.879234] [ T52862] futex_wait_queue+0x65/0xa0
[ 6315.882626] [ T52862] __futex_wait+0x155/0x1d0
[ 6315.885917] [ T52862] ? __pfx_futex_wake_mark+0x10/0x10
[ 6315.889487] [ T52862] futex_wait+0x74/0x120
[ 6315.892690] [ T52862] ? __pfx_hrtimer_wakeup+0x10/0x10
[ 6315.896211] [ T52862] do_futex+0x105/0x260
[ 6315.899355] [ T52862] __x64_sys_futex+0x12a/0x200
[ 6315.902692] [ T52862] ? __x64_sys_futex+0x12a/0x200
[ 6315.906094] [ T52862] x64_sys_call+0x1ce7/0x25c0
[ 6315.909394] [ T52862] do_syscall_64+0x7f/0x180
[ 6315.912631] [ T52862] ? do_syscall_64+0x8c/0x180
[ 6315.915970] [ T52862] ? switch_fpu_return+0x51/0xd0
[ 6315.919359] [ T52862] ? syscall_exit_to_user_mode+0x86/0x260
[ 6315.923069] [ T52862] ? do_syscall_64+0x8c/0x180
[ 6315.926410] [ T52862] entry_SYSCALL_64_after_hwframe+0x78/0x80
[ 6315.930158] [ T52862] RIP: 0033:0x7635b3e98d61
[ 6315.933439] [ T52862] Code: 48 89 4d c8 e8 00 f8 ff ff 4c 8b 55 c8 8b 75
dc 45 31 c0 41 89 c5 48 8b 7d d0 41 b9 ff ff ff ff 44 89 e2 b8 ca 00 00 00 0f
05 <44> 89 ef 48 89 c3 e8 54 f8 ff ff e9 65 ff f>
[ 6315.945541] [ T52862] RSP: 002b:00007635af5fde10 EFLAGS: 00000246
ORIG_RAX: 00000000000000ca
[ 6315.951915] [ T52862] RAX: ffffffffffffffda RBX: 00005a22f1a804f0 RCX:
00007635b3e98d61
[ 6315.956420] [ T52862] RDX: 0000000000000000 RSI: 0000000000000089 RDI:
00005a22f1a80518
[ 6315.960936] [ T52862] RBP: 00007635af5fde50 R08: 0000000000000000 R09:
00000000ffffffff
[ 6315.965421] [ T52862] R10: 00007635af5fdf60 R11: 0000000000000246 R12:
0000000000000000
[ 6315.969939] [ T52862] R13: 0000000000000000 R14: 00005a22f1a80520 R15:
00005a22f1a80518
[ 6315.974409] [ T52862] </TASK>
[ 6315.977123] [ T52862] Modules linked in: cpuid xt_tcpudp veth
xt_conntrack nft_chain_nat xt_MASQUERADE nf_nat nf_conntrack_netlink
nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xfrm_user xfrm_algo xt_ad>
[ 6316.018702] [ T52862] CR2: 00000000000000a0
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-1012-aws 6.8.0-1012.13
ProcVersionSignature: Ubuntu 6.8.0-1012.13-aws 6.8.8
Uname: Linux 6.8.0-1012-aws x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CloudArchitecture: x86_64
CloudBuildName: server
CloudID: aws
CloudName: aws
CloudPlatform: ec2
CloudRegion: us-east-1
CloudSerial: 20220912
CloudSubPlatform: metadata (http://169.254.169.254)
Date: Mon Aug 5 08:34:06 2024
Ec2Architecture: x86_64
Ec2Imageid: ami-08c40ec9ead489470
Ec2Instancetype: u-12tb1.112xlarge
Ec2Region: us-east-1
ProcEnviron:
LANG=C.UTF-8
LC_CTYPE=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
SourcePackage: linux-signed-aws
UpgradeStatus: Upgraded to noble on 2024-06-06 (59 days ago)
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