smbd: memory corruption

[Youri78]

Hello

My ReadyNAS 104 is becoming unresponsive frequently. I have to unplug the power cable to restart it.

I discover many memory corruption errors before the crash in smbd.log:

[2018/02/08 15:29:27.481286, 2] ../source3/auth/auth.c:314(auth_check_ntlm_password)
check_ntlm_password: authentication for user [<username>] -> [<username>] -> [<domain>\<username>] succeeded
*** Error in `/usr/sbin/smbd': malloc(): memory corruption (fast): 0x0184cf40 ***

[2018/02/08 18:46:05.200054, 1] ../source3/auth/user_krb5.c:142(get_user_from_kerberos_info)
PAM account restrictions prevent user [<domain>\<username>] login
*** Error in `/usr/sbin/smbd': malloc(): memory corruption (fast): 0x0184c300 ***
*** Error in `/usr/sbin/smbd': malloc(): memory corruption (fast): 0x0184c300 ***

The firmware was upgraded to the latest version (6.9.2) and I have no app.

This device is too old to get the Netgear support. 

[StephenB]

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wrote:

This device is too old to get the Netgear support. 

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Perhaps too old to get free support, but not too old to get paid support via my.netgear.com.

Note the hardware warranty is 3 years, so it might still be covered.  Though the memory issue could be software related.

What services do you have enabled, and what apps are you using?   

[Youri78]

I have no app installed and I'm not using iSCSI, backup or cloud features.

The list of services: SMB, HTTP, HTTPS, SSH

I use Active Directory for authentication.

[mdgm-ntgr]

Do you use snapshots?

Are quotas enabled on your data volume?

[Youri78]

Hi,

Snapshots are in not enabled on the shares:

-Snapshot management : Smart

-Snapshot schedule: Never

-Allow Snapshot Access: No

At the volume level:

-Snapshot prunning: 95%

Quotas are not enabled at volume or shares levels.

But Checksum is enabled at volume level.

[mdgm-ntgr]

Can you download your logs (see the Sending Logs link in my sig)?

Could you then run the memory test boot menu option?

[Youri78]

ok I sent the logs by email and I will test the memory during the night.

[Youri78]

Hello,

The memory test has failed, the RN104 is freezing at the beginning of the memory test:

- HDD led: ON

- Power led: blinking fast

- Time: 00:00:01

I have to disconnect the power cable to restart it, nothing else is working.

I guess the memory modules are defectives. Can I replace them?

[Marc_V]

Hi @Youri78

Memory of the RN104 is not replaceable since it is soldered.

@mdgm-ntgr might be able to see something on the logs that might help resolve the issue. Otherwise, if your RN104 is under 3 years then you might want to contact NETGEAR Support to check for replacement.

Regards