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SubjectWARNING: kernel stack regs at 0000000068363d2a in telegraf:23122 has bad 'bp' value 000000007b842ec4
Hi,

The box has crashed twice this week both times related to telegraf, we
are running ZFS and attached is the kernel config.

Any ideas?

Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic
Kernel: 4.18.0-1016-aws

ZFS
filename: /lib/modules/4.18.0-1016-aws/updates/dkms/zfs.ko
version: 0.7.13-1
license: CDDL
author: OpenZFS on Linux
description: ZFS
alias: devname:zfs
alias: char-major-10-249
srcversion: CD1489EAB5842683DC3584F
depends: spl,znvpair,zcommon,zunicode,zavl,icp
retpoline: Y
name: zfs
vermagic: 4.18.0-1016-aws SMP mod_unload


[2311488.107255] PANIC: double fault, error_code: 0x0
[2311488.109565] CPU: 36 PID: 23122 Comm: telegraf Kdump: loaded
Tainted: P OE 4.18.0-1016-aws #18~18.04.1-Ubuntu
[2311488.109566] Hardware name: Amazon EC2 r5d.12xlarge/, BIOS 1.0 10/16/2017
[2311488.109573] RIP: 0010:do_async_page_fault+0x5/0x80
[2311488.109574] Code: 8d b5 78 ff ff ff 48 8d 78 10 e8 96 e6 06 00 eb
cb e8 1f 16 02 00 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
44 00 00 <55> 48 89 e5 53 65 8b 05 2f 70 1b 57 85 c0 74 37 65 8b 05 e4
6f 1b
[2311488.109602] RSP: 0018:fffffe0000637000 EFLAGS: 00010087
[2311488.109604] RAX: 00000000a9800a27 RBX: 0000000000000000 RCX:
ffffffffa9800a27
[2311488.109605] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
fffffe0000637008
[2311488.109606] RBP: fffffe0000637009 R08: 0000000000000000 R09:
0000000000000000
[2311488.109607] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[2311488.109608] R13: 0000000000000000 R14: 0000000000000000 R15:
0000000000000000
[2311488.109610] FS: 00007fa0097fa700(0000) GS:ffff9ef8fb500000(0000)
knlGS:0000000000000000
[2311488.109611] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[2311488.109612] CR2: fffffe0000636ff8 CR3: 00000056c3de4003 CR4:
00000000007606e0
[2311488.109616] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[2311488.109617] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[2311488.109617] PKRU: 55555554
[2311488.109618] Call Trace:
[2311488.109620] Kernel panic - not syncing: Machine halted.
[2311488.112028] CPU: 36 PID: 23122 Comm: telegraf Kdump: loaded
Tainted: P OE 4.18.0-1016-aws #18~18.04.1-Ubuntu
[2311488.116715] Hardware name: Amazon EC2 r5d.12xlarge/, BIOS 1.0 10/16/2017
[2311488.119698] Call Trace:
[2311488.120932] <#DF>
[2311488.122003] dump_stack+0x63/0x85
[2311488.123641] panic+0xe4/0x244
[2311488.125077] ? async_page_fault+0x1e/0x30
[2311488.126957] df_debug+0x2d/0x30
[2311488.128487] do_double_fault+0xa1/0x140
[2311488.130258] double_fault+0x1e/0x30
[2311488.131911] RIP: 0010:do_async_page_fault+0x5/0x80
[2311488.134226] Code: 8d b5 78 ff ff ff 48 8d 78 10 e8 96 e6 06 00 eb
cb e8 1f 16 02 00 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f
44 00 00 <55> 48 89 e5 53 65 8b 05 2f 70 1b 57 85 c0 74 37 65 8b 05 e4
6f 1b
[2311488.142318] RSP: 0018:fffffe0000637000 EFLAGS: 00010087
[2311488.144786] RAX: 00000000a9800a27 RBX: 0000000000000000 RCX:
ffffffffa9800a27
[2311488.148112] RDX: 0000000000000000 RSI: 0000000000000000 RDI:
fffffe0000637008
[2311488.152820] RBP: fffffe0000637009 R08: 0000000000000000 R09:
0000000000000000
[2311488.158990] R10: 0000000000000000 R11: 0000000000000000 R12:
0000000000000000
[2311488.164822] R13: 0000000000000000 R14: 0000000000000000 R15:
0000000000000000
[2311488.170684] ? native_iret+0x7/0x7
[2311488.173652] WARNING: kernel stack regs at 0000000068363d2a in
telegraf:23122 has bad 'bp' value 000000007b842ec4
[2311488.173653] unwind stack type:5 next_sp:000000008e5f46ef
mask:0x20 graph_idx:0
[2311488.173655] 000000007876cc6b: fffffe0000637e50 (0xfffffe0000637e50)
[2311488.173657] 0000000076b771fd: ffffffffa8e32793
(show_trace_log_lvl+0x223/0x3d0)
[2311488.173660] 000000007707741a: ffffffffa9e97f70 (.LC0+0x530/0x710)
[2311488.173661] 00000000116bf189: ffffffffa9e980a2 (.LC0+0x662/0x710)
[2311488.173662] 00000000369b663b: ffff9ef718653c00 (0xffff9ef718653c00)
[2311488.173663] 00000000f2b9e90d: ffffffffa9800a27 (native_iret+0x7/0x7)
[2311488.173664] 0000000080f01fd0: 0000000000000000 ...
[2311488.173664] 0000000006e868c6: 0000000000000020 (0x20)
[2311488.173665] 00000000467d8117: 0000000000000005 (0x5)
[2311488.173666] 00000000614fb3b0: fffffe0000637000 (0xfffffe0000637000)
[2311488.173666] 00000000ce075175: fffffe0000638000 (0xfffffe0000638000)
[2311488.173667] 00000000f6499015: fffffe0000637000 (0xfffffe0000637000)
[2311488.173668] 00000000049718e3: 0000000000000005 (0x5)
[2311488.173668] 00000000381d5adf: fffffe0000637000 (0xfffffe0000637000)
[2311488.173669] 00000000b719e857: fffffe0000638000 (0xfffffe0000638000)
[2311488.173669] 00000000d98e04b3: fffffe0000637000 (0xfffffe0000637000)
[2311488.173670] 00000000b73751f2: 0000000000000020 (0x20)
[2311488.173671] 00000000c1803216: ffff9ef718653c00 (0xffff9ef718653c00)
[2311488.173671] 000000005a3cf788: 0000010100000000 (0x10100000000)
[2311488.173672] 0000000007b64ed7: 0000000000000000 ...
[2311488.173672] 0000000009d1d5db: fffffe0000637d68 (0xfffffe0000637d68)
[2311488.173675] 00000000e406678a: ffffffffa8e6d085
(do_async_page_fault+0x5/0x80)
[2311488.173675] 000000005c5c1c56: fffffe0000637f58 (0xfffffe0000637f58)
[2311488.173676] 0000000085febed7: 7d74493d0e5c7e00 (0x7d74493d0e5c7e00)
[2311488.173676] 000000005e33596d: 0000000000000086 (0x86)
[2311488.173677] 000000008cba48f1: 0000000000000000 ...
[2311488.173677] 000000005d67e7dc: fffffe0000637f18 (0xfffffe0000637f18)
[2311488.173678] 0000000018e5f25d: 00000056c3de4003 (0x56c3de4003)
[2311488.173678] 000000001d614f09: 0000000000000000 ...
[2311488.173679] 000000002fdcb7e7: fffffe0000637e60 (0xfffffe0000637e60)
[2311488.173680] 0000000039750c75: ffffffffa8e32974 (show_stack+0x34/0x50)
[2311488.173681] 000000006007bd6d: fffffe0000637e80 (0xfffffe0000637e80)
[2311488.173683] 00000000cc918138: ffffffffa977329e (dump_stack+0x63/0x85)
[2311488.173684] 0000000085744678: fffffe0000637f00 (0xfffffe0000637f00)
[2311488.173685] 00000000fe18536c: ffffffffa9ea5422 (.LC0+0x1b2/0x460)
[2311488.173686] 000000006771ae0a: fffffe0000637f08 (0xfffffe0000637f08)
[2311488.173688] 000000006c9cf5ba: ffffffffa8e8eb00 (panic+0xe4/0x244)
[2311488.173689] 00000000e638e3e1: ffff9ef700000008 (0xffff9ef700000008)
[2311488.173690] 00000000c98ad3ca: fffffe0000637f18 (0xfffffe0000637f18)
[2311488.173690] 00000000b1340d7a: fffffe0000637eb0 (0xfffffe0000637eb0)
[2311488.173691] 00000000a4519e0c: 7d74493d0e5c7e00 (0x7d74493d0e5c7e00)
[2311488.173692] 0000000089fc5351: ffffffffa98010be (async_page_fault+0x1e/0x30)
[2311488.173693] 000000002e312d25: fffffe0000637e48 (0xfffffe0000637e48)
[2311488.173693] 00000000e196c719: fffffe0000632000 (0xfffffe0000632000)
[2311488.173694] 00000000a305c4b8: 0000000000000004 (0x4)
[2311488.173695] 000000000185ec0d: 0000000000015ba0 (0x15ba0)
[2311488.173695] 00000000ce241026: 0000000000000004 (0x4)
[2311488.173696] 00000000c80f9f42: fffffe0000637f58 (0xfffffe0000637f58)
[2311488.173696] 000000009abeada7: 0000000000000000 ...
[2311488.173698] 0000000007fdbbd8: ffffffffa9c04f58 (ds.4711+0x2/0x2)
[2311488.173699] 0000000093e9aced: 00000056c3de4003 (0x56c3de4003)
[2311488.173699] 000000000e8ee0e7: fffffe0000637f20 (0xfffffe0000637f20)
[2311488.173700] 00000000a3e660e0: ffffffffa8e6987d (df_debug+0x2d/0x30)
[2311488.173701] 000000006f6b547c: fffffe0000637f58 (0xfffffe0000637f58)
[2311488.173702] 000000007768b6d3: fffffe0000637f48 (0xfffffe0000637f48)
[2311488.173703] 000000001a031e41: ffffffffa8e2f2e1 (do_double_fault+0xa1/0x140)
[2311488.173704] 000000008ae2ed69: 0000000000000001 (0x1)
[2311488.173704] 00000000e1c42ebd: 0000000000000000 ...
[2311488.173705] 00000000771c60dc: fffffe0000637f59 (0xfffffe0000637f59)
[2311488.173706] 000000001c388f18: ffffffffa9800c4e (double_fault+0x1e/0x30)
[2311488.173706] 0000000068363d2a: 0000000000000000 ...
[2311488.173707] 000000006bb2e642: fffffe0000637009 (0xfffffe0000637009)
[2311488.173707] 00000000ed5081db: 0000000000000000 ...
[2311488.173708] 0000000079766182: 00000000a9800a27 (0xa9800a27)
[2311488.173709] 00000000d7e8925c: ffffffffa9800a27 (native_iret+0x7/0x7)
[2311488.173709] 00000000758c3901: 0000000000000000 ...
[2311488.173710] 00000000c8cacbb5: fffffe0000637008 (0xfffffe0000637008)
[2311488.173711] 000000001b02ff67: ffffffffffffffff (0xffffffffffffffff)
[2311488.173712] 000000003f3101ae: ffffffffa8e6d085
(do_async_page_fault+0x5/0x80)
[2311488.173713] 0000000021ccdc1a: 0000000000000010 (0x10)
[2311488.173713] 000000000f682887: 0000000000010087 (0x10087)
[2311488.173714] 00000000d7b19537: fffffe0000637000 (0xfffffe0000637000)
[2311488.173714] 000000001b695c3e: 0000000000000018 (0x18)
[2311488.173715] </#DF>
[unhandled content-type:application/octet-stream]
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