Kernel Slab Corruption in syslog

[Begotten]

Hi everyone,
Since the latest firmware release (386.1 in RT-AC86U) I'm looking at the syslog more frequently.
This morning I saw this strange entry,
What's the meaning of it?
Should I be worried?
Many thanks

Feb 12 06:53:03 kernel: Slab corruption (Tainted: P O ): bridge_fdb_cache start=ffffffc014cc18c0, len=72
Feb 12 06:53:03 kernel: 040: 00 00 00 00 6b 6b 6b a5 ....kkk.
Feb 12 06:53:03 kernel: Prev obj: start=ffffffc014cc1840, len=72
Feb 12 06:53:03 kernel: 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
Feb 12 06:53:03 kernel: 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
Feb 12 06:53:03 kernel: Next obj: start=ffffffc014cc1940, len=72
Feb 12 06:53:03 kernel: 000: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk
Feb 12 06:53:03 kernel: 010: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk

 

[bbunge]

Did you do a hard factory reset after upgrade to 386.1? Check that /jffs is mounted.

 

[Begotten]

The /jfss is mounted correctly
and no, I did not do a factory reset after the upgrade, but it's almost 2 weeks since I did the upgrade and everything was doing fine until this error this morning.
I have a swap file of 256mb on a usb drive, is it possible that's the cause of the error?
I've got no clue what's a Slab corruption error means.