The following run as root will cause the instances to hang and then
reboot (by the watchdog?)
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
int main(void)
{
for (;;) {
int fd;
fd = open("/dev/hpet", O_RDONLY | O_NONBLOCK);
close(fd);
}
}
** Information type changed from Public to Public Security
** Information type changed from Public Security to Private Security
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-aws in Ubuntu.
https://bugs.launchpad.net/bugs/1841747
Title:
dev test in ubuntu_stress_smoke_test crashes AWS c5.large with Disco
Status in Stress-ng:
New
Status in ubuntu-kernel-tests:
New
Status in linux-aws package in Ubuntu:
New
Bug description:
When testing the dev test in ubuntu_stress_smoke_test, the instance
will crash and gets rebooted.
Spotted on:
* c3.xlarge
* c4.large
* m3.large
* m4.large
* r3.large
* t2.small
* x1e.xlarge
Test output:
09:10:12 DEBUG| [stdout] dentry RETURNED 0
09:10:12 DEBUG| [stdout] dentry PASSED
09:10:12 DEBUG| [stdout] dev STARTING
packet_write_wait: Connection to 18.237.187.217 port 22: Broken pipe
tailing syslog:
Aug 28 09:10:07 ip-172-31-3-117 stress-ng: info: [19659] dispatching hogs: 4
dentry
Aug 28 09:10:12 ip-172-31-3-117 stress-ng: info: [19659] successful run
completed in 5.13s
Aug 28 09:10:12 ip-172-31-3-117 stress-ng: invoked with './stress-n' by user 0
Aug 28 09:10:12 ip-172-31-3-117 stress-ng: system: 'ip-172-31-3-117' Linux
5.0.0-1012-aws #13-Ubuntu SMP Fri Aug 2 12:25:32 UTC 2019 x86_64
Aug 28 09:10:12 ip-172-31-3-117 stress-ng: memory (MB): total 3754.94, free
3386.23, shared 0.06, buffer 145.52, swap 1024.00, free swap 951.48
Aug 28 09:10:12 ip-172-31-3-117 stress-ng: info: [19674] dispatching hogs: 4
dev
Aug 28 09:10:12 ip-172-31-3-117 kernel: [ 481.406432] PM: Marking nosave
pages: [mem 0x00000000-0x00000fff]
Aug 28 09:10:12 ip-172-31-3-117 kernel: [ 481.406434] PM: Marking nosave
pages: [mem 0x0009e000-0x000fffff]
Aug 28 09:10:12 ip-172-31-3-117 kernel: [ 481.406437] PM: Basic memory
bitmaps created
Aug 28 09:10:12 ip-172-31-3-117 kernel: [ 481.406496] PM: Basic memory
bitmaps freed
packet_write_wait: Connection to 18.237.187.217 port 22: Broken pipe
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-1012-aws 5.0.0-1012.13
ProcVersionSignature: User Name 5.0.0-1012.13-aws 5.0.15
Uname: Linux 5.0.0-1012-aws x86_64
ApportVersion: 2.20.10-0ubuntu27.1
Architecture: amd64
Date: Wed Aug 28 09:21:28 2019
Ec2AMI: ami-0b731fb4a9a36df8c
Ec2AMIManifest: (unknown)
Ec2AvailabilityZone: us-west-2c
Ec2InstanceType: c4.large
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
SourcePackage: linux-aws
UpgradeStatus: No upgrade log present (probably fresh install)
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