Public bug reported:
Short version (full dmesg attached):
[ 0.000000] Linux version 5.3.0-1028-aws (buildd@lcy01-amd64-015) (gcc
version 7.5.0 (Ubuntu 7.5.0-3ubuntu1~18.04)) #30~18.04.1-Ubuntu SMP Mon Jun 22
15:48:21 UTC 2020 (Ubuntu 5.3.0-1028.30~18.04.1-aws 5.3.18)
...
[ 526.413876] uncoop3246: Corrupted page table at address 7f2c7ba34b60
[ 526.416680] PGD 800000021d908067 P4D 800000021d908067 PUD 21c368067 PMD
21f4ca067 PTE 1cf554025
[ 526.420442] Bad pagetable: 001d [#1] SMP PTI
[ 526.422390] CPU: 0 PID: 3246 Comm: uncoop3246 Kdump: loaded Not tainted
5.3.0-1028-aws #30~18.04.1-Ubuntu
[ 526.426495] Hardware name: Amazon EC2 m5.large/, BIOS 1.0 10/16/2017
[ 526.429311] RIP: 0033:0x7f2c7ba34b60
[ 526.430943] Code: 19 ff ff 48 8b 10 48 8d 0d cd f3 ff ff 48 8b 52 68 48 39
ca 75 04 5d c3 66 90 5d 48 89 c7 ff e2 66 2e 0f 1f 84 00 00 00 00 00 <55> 48 89
e5 e8 b7 19 ff ff 48 8b 10 48 8d 0d 9d f3 ff ff 48 8b 52
[ 526.438845] RSP: 002b:00004f001eefea38 EFLAGS: 00010293
[ 526.441182] RAX: 0000000000000001 RBX: 00005645c3168dc0 RCX: 00007f2c76e01959
[ 526.444296] RDX: 0000000000000002 RSI: 0000000000000080 RDI: 00005645c3168dc0
[ 526.447366] RBP: 00004f001eefecb0 R08: 0000000000000000 R09: 0000420000000000
[ 526.450449] R10: 0000000000000000 R11: 0000000000000246 R12: 00004f001eeffec0
[ 526.453581] R13: 0000000100000000 R14: 0000000000000000 R15: 00004f001eefff80
[ 526.456676] FS: 00004f001eeff5c0 GS: 0000000000000000
[ 526.459003] Modules linked in: tcp_diag inet_diag dummy ipmi_devintf
ipmi_msghandler msr crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
aesni_intel aes_x86_64 crypto_simd cryptd glue_helper ppdev serio_raw
parport_pc parport sch_fq_codel iptable_filter bonding ip_tables x_tables
autofs4 overlay ena
---
Also attached crash dump information.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "dmesg.202008181423"
https://bugs.launchpad.net/bugs/1892270/+attachment/5402935/+files/dmesg.202008181423
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https://bugs.launchpad.net/bugs/1892270
Title:
Corrupted page table in Linux version 5.3.0-1028-aws
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