Mixing
System crash - strange chars in syslog
Clash Royale CLAN TAG#URR8PPP
up vote
3
down vote
favorite
I have a small server which I use for testing and programming. Currently it runs Debian 9.4 stretch with 4.14.0-0.bpo.3-amd64 kernel.
Today I tried to connect through SSH but I couldn't then I tried to ping it and it was unreachable. Therefore I had to hard-restart it by unplugging power cable. Then I went to /var/log/syslog and I found a strange line containing exactly 6140 characters like the following
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
then nothing else until new log entries of system restart. This is actually the first time it happens.
Does someone know what could it be?
debian logs
edited 2 hours ago
Jeff Schaller
34.4k951114
asked 2 hours ago
DrKey
1161
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
up vote
3
down vote
favorite
I have a small server which I use for testing and programming. Currently it runs Debian 9.4 stretch with 4.14.0-0.bpo.3-amd64 kernel.
Today I tried to connect through SSH but I couldn't then I tried to ping it and it was unreachable. Therefore I had to hard-restart it by unplugging power cable. Then I went to /var/log/syslog and I found a strange line containing exactly 6140 characters like the following
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
then nothing else until new log entries of system restart. This is actually the first time it happens.
Does someone know what could it be?
debian logs
edited 2 hours ago
Jeff Schaller
34.4k951114
asked 2 hours ago
DrKey
1161
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
Well I wrote about this at askubuntu.com/a/1020373/43344 , for one. (-: Then there are unix.stackexchange.com/questions/227173 and unix.stackexchange.com/questions/237321 …
– JdeBP
2 hours ago
1
@JdeBP I prefer your first answer/link, that is indeed it. Odd has a question with 1500+ visits you have not got a single vote, +1.
– Rui F Ribeiro
1 hour ago
add a comment |Â
up vote
3
down vote
favorite
up vote
3
down vote
favorite
I have a small server which I use for testing and programming. Currently it runs Debian 9.4 stretch with 4.14.0-0.bpo.3-amd64 kernel.
Today I tried to connect through SSH but I couldn't then I tried to ping it and it was unreachable. Therefore I had to hard-restart it by unplugging power cable. Then I went to /var/log/syslog and I found a strange line containing exactly 6140 characters like the following
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
then nothing else until new log entries of system restart. This is actually the first time it happens.
Does someone know what could it be?
debian logs
edited 2 hours ago
Jeff Schaller
34.4k951114
asked 2 hours ago
DrKey
1161
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have a small server which I use for testing and programming. Currently it runs Debian 9.4 stretch with 4.14.0-0.bpo.3-amd64 kernel.
Today I tried to connect through SSH but I couldn't then I tried to ping it and it was unreachable. Therefore I had to hard-restart it by unplugging power cable. Then I went to /var/log/syslog and I found a strange line containing exactly 6140 characters like the following
^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
then nothing else until new log entries of system restart. This is actually the first time it happens.
Does someone know what could it be?
debian logs
debian logs
edited 2 hours ago
Jeff Schaller
34.4k951114
asked 2 hours ago
DrKey
1161
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 hours ago
Jeff Schaller
34.4k951114
asked 2 hours ago
DrKey
1161
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 2 hours ago
Jeff Schaller
34.4k951114
edited 2 hours ago
Jeff Schaller
34.4k951114
edited 2 hours ago
Jeff Schaller
34.4k951114
34.4k951114
asked 2 hours ago
DrKey
1161
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
DrKey
1161
asked 2 hours ago
DrKey
1161
1161
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
DrKey is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
Well I wrote about this at askubuntu.com/a/1020373/43344 , for one. (-: Then there are unix.stackexchange.com/questions/227173 and unix.stackexchange.com/questions/237321 …
– JdeBP
2 hours ago
1
@JdeBP I prefer your first answer/link, that is indeed it. Odd has a question with 1500+ visits you have not got a single vote, +1.
– Rui F Ribeiro
1 hour ago
add a comment |Â
1
Well I wrote about this at askubuntu.com/a/1020373/43344 , for one. (-: Then there are unix.stackexchange.com/questions/227173 and unix.stackexchange.com/questions/237321 …
– JdeBP
2 hours ago
1
@JdeBP I prefer your first answer/link, that is indeed it. Odd has a question with 1500+ visits you have not got a single vote, +1.
– Rui F Ribeiro
1 hour ago
1
1
Well I wrote about this at askubuntu.com/a/1020373/43344 , for one. (-: Then there are unix.stackexchange.com/questions/227173 and unix.stackexchange.com/questions/237321 …
– JdeBP
2 hours ago
Well I wrote about this at askubuntu.com/a/1020373/43344 , for one. (-: Then there are unix.stackexchange.com/questions/227173 and unix.stackexchange.com/questions/237321 …
– JdeBP
2 hours ago
1
1
@JdeBP I prefer your first answer/link, that is indeed it. Odd has a question with 1500+ visits you have not got a single vote, +1.
– Rui F Ribeiro
1 hour ago
@JdeBP I prefer your first answer/link, that is indeed it. Odd has a question with 1500+ visits you have not got a single vote, +1.
– Rui F Ribeiro
1 hour ago
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
5
down vote
That is corruption of the filesystem/syslog writing.
The crash caught the system mid-writing to the syslog file, and that is the end result. Already have seen it several times over the years, in Linux VMs and a couple more times in Raspberries and Banana Pis.
Nothing to obsess about or lose time to investigate a lot why you have this for a one-time event. I would be more worried at finding out why it crashed, especially if it is a regular event.
PS getting into anecdotal territory, last time I had this happening regularly in a Banana Pi R1, I managed to trace the cause to a (faulty) realtek wifi chipset.
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
5
down vote
That is corruption of the filesystem/syslog writing.
The crash caught the system mid-writing to the syslog file, and that is the end result. Already have seen it several times over the years, in Linux VMs and a couple more times in Raspberries and Banana Pis.
Nothing to obsess about or lose time to investigate a lot why you have this for a one-time event. I would be more worried at finding out why it crashed, especially if it is a regular event.
PS getting into anecdotal territory, last time I had this happening regularly in a Banana Pi R1, I managed to trace the cause to a (faulty) realtek wifi chipset.
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
add a comment |Â
up vote
5
down vote
That is corruption of the filesystem/syslog writing.
The crash caught the system mid-writing to the syslog file, and that is the end result. Already have seen it several times over the years, in Linux VMs and a couple more times in Raspberries and Banana Pis.
Nothing to obsess about or lose time to investigate a lot why you have this for a one-time event. I would be more worried at finding out why it crashed, especially if it is a regular event.
PS getting into anecdotal territory, last time I had this happening regularly in a Banana Pi R1, I managed to trace the cause to a (faulty) realtek wifi chipset.
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
add a comment |Â
up vote
5
down vote
up vote
5
down vote
That is corruption of the filesystem/syslog writing.
The crash caught the system mid-writing to the syslog file, and that is the end result. Already have seen it several times over the years, in Linux VMs and a couple more times in Raspberries and Banana Pis.
Nothing to obsess about or lose time to investigate a lot why you have this for a one-time event. I would be more worried at finding out why it crashed, especially if it is a regular event.
PS getting into anecdotal territory, last time I had this happening regularly in a Banana Pi R1, I managed to trace the cause to a (faulty) realtek wifi chipset.
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
That is corruption of the filesystem/syslog writing.
The crash caught the system mid-writing to the syslog file, and that is the end result. Already have seen it several times over the years, in Linux VMs and a couple more times in Raspberries and Banana Pis.
Nothing to obsess about or lose time to investigate a lot why you have this for a one-time event. I would be more worried at finding out why it crashed, especially if it is a regular event.
PS getting into anecdotal territory, last time I had this happening regularly in a Banana Pi R1, I managed to trace the cause to a (faulty) realtek wifi chipset.
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
edited 43 mins ago
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
answered 2 hours ago
Rui F Ribeiro
37.4k1374118
37.4k1374118
add a comment |Â
add a comment |Â
DrKey is a new contributor. Be nice, and check out our Code of Conduct.
DrKey is a new contributor. Be nice, and check out our Code of Conduct.
DrKey is a new contributor. Be nice, and check out our Code of Conduct.
DrKey is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f477537%2fsystem-crash-strange-chars-in-syslog%23new-answer', 'question_page');
);
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
1
Well I wrote about this at askubuntu.com/a/1020373/43344 , for one. (-: Then there are unix.stackexchange.com/questions/227173 and unix.stackexchange.com/questions/237321 …
– JdeBP
2 hours ago
1
@JdeBP I prefer your first answer/link, that is indeed it. Odd has a question with 1500+ visits you have not got a single vote, +1.
– Rui F Ribeiro
1 hour ago